Page 1: Service Manual
KM-4230 / 5230 SERVICE MANUAL Published in June ’00 2A370761 Revision 1 4230/5230 S/M (MCA)
Page 2 CAUTION DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY RE- PLACED. REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER. DISPOSE OF USED BATTERIES ACCORDING TO THE MANUFAC- TURER’S INSTRUCTIONS. ATTENTION IL Y A DANGER D’EXPLOSION S’IL Y A REMPLACEMENT IN- CORRECT DE LA BATTERIE.
Page 3 SERVICE MANUAL KM-4230/5230...
Page 4: Safety Precautions
Safety precautions This booklet provides safety warnings and precautions for our service personnel to ensure the safety of their customers, their machines as well as themselves during maintenance activities. Service personnel are advised to read this booklet carefully to familiarize themselves with the warnings and precautions described here before engaging in maintenance activities.
Page 5 Safety warnings and precautions Various symbols are used to protect our service personnel and customers from physical danger and to prevent damage to their property. These symbols are described below: DANGER: High risk of serious bodily injury or death may result from insufficient attention to or incorrect compliance with warning messages using this symbol.
Page 6: Installation Precautions
indicates that action is required. The specific action required is shown inside the symbol. General action required. Remove the power plug from the wall outlet. Always ground the copier. 1. Installation Precautions WARNING • Do not use a power supply with a voltage other than that specified. Avoid multiple connections to one outlet: they may cause fire or electric shock.
Page 7: Specifications 1
• Always handle the machine by the correct locations when moving it..• Always use anti-toppling and locking devices on copiers so equipped. Failure to do this may cause the copier to move unexpectedly or topple, leading to injury................•...
Page 8 • Check that the power cable covering is free of damage. Check that the power plug is dust-free. If it is dirty, clean it to remove the risk of fire or electric shock..................• Never attempt to disassemble the optical unit in machines using lasers. Leaking laser light may damage eyesight.
Page 9 • After maintenance, always check that all the parts, screws, connectors and wires that were removed, have been refitted correctly. Special attention should be paid to any forgotten connector, trapped wire and missing screws..................• Check that all the caution labels that should be present on the machine according to the instruction handbook are clean and not peeling.
Page 10: Table Of Contents
2A3/4 CONTENTS THEORY AND CONSTRUCTION SECTION 1-1 Specifications 1-1-1 Specifications ................1-1-1 1-2 Handling Precautions 1-2-1 Drum ..................... 1-2-1 1-2-2 Developer and toner ..............1-2-1 1-3 Mechanical Construction 1-3-1 Parts names and their functions ............ 1-3-1 1-3-2 Machine cross section ..............1-3-4 1-3-3 Drive system .................
Page 11: Troubleshooting
2A3/4 3-2 Maintenance Mode 3-2-1 Maintenance mode ................ 3-2-1 3-2-2 Copier management ..............3-2-99 3-3 Assembly and Disassembly 3-3-1 Precautions for assembly and disassembly ........3-3-1 3-3-2 Paper feed section ................ 3-3-3 3-3-3 Optical section ................3-3-23 3-3-4 Main charging section ..............3-3-42 3-3-5 Drum section ................
Page 12: Deck Main Pcb
2A3/4 Main PCB 5/9 ..................3-7-21 Main PCB 6/9 ..................3-7-22 Main PCB 7/9 ..................3-7-23 Main PCB 8/9 ..................3-7-24 Main PCB 9/9 ..................3-7-25 Memory copy PCB 1/12 ................3-7-26 Memory copy PCB 2/12 ................3-7-27 Memory copy PCB 3/12 ................3-7-28 Memory copy PCB 4/12 ................
Page 13 THEORY AND CONSTRUCTION SECTION 4230/5230 S/M (MCA)
Page 14: Specifications
2A3/4 CONTENTS 1-1 Specifications 1-1-1 Specifications ..................1-1-1 1-1-5...
Page 15 2A3/4 1-1-1 Specifications Copier (42 ppm copier) Type …………………………… Desktop Copying system ……………… Dry, indirect electrostatic system Originals ……………………… Sheets and books Maximum size: A3/11" × 17" Original feed system ………… Fixed Copy paper …………………… Drawer and duplex unit: Plain paper (64 – 80 g/m Bypass table: Plain paper (60 –...
Page 16 2A3/4 Developing system …………… Dry, reverse developing (magnetic brush) Developer: 2-component, ferrite carrier and N29T black toner Toner density control: toner sensor Toner replenishing: automatic from a toner cartridge Transfer system ……………… Single negative corona charging, –210 µA Separation system …………… Single AC corona charging Fixing system …………………...
Page 17 2A3/4-1 (25) Program copy (26) Setting change mode (27) Job build mode (28) Department control (29) Weekly timer (30) Language selection Power source ………………… 120 V AC, 60 Hz, 10.5 A 220 – 240 V AC, 50 or 60 Hz, 4.9 A Power consumption ……………...
Page 18 2A3/4 Copier (52 ppm copier) Type …………………………… Console Copying system ……………… Dry, indirect electrostatic system Originals ……………………… Sheets and books Maximum size: A3/11" × 17" Original feed system ………… Fixed Copy paper …………………… Drawer and duplex unit: Plain paper (64 – 80 g/m Bypass table: Plain paper (60 –...
Page 19 2A3/4 Toner density control: toner sensor Toner replenishing: automatic from a toner cartridge Transfer system ……………… Single negative corona charging, –210 µA Separation system …………… Single AC corona charging Fixing system ………………… Heat roller Heat source: halogen heaters (main 850 W, sub 850W) Control temperature: 190˚C/374˚F (at normal ambient temperature) Abnormally high temperature protection devices:...
Page 20 2A3/4-1 (28) Department control (29) Weekly timer (30) Language selection Power source ………………… 120 V AC, 60 Hz, 10.5 A 220 – 240 V AC, 50 or 60 Hz, 4.9 A Power consumption …………… 1200 W (for 120 V specifications) 1300 W (for 220-240 V specifications) Options …………………………...
Page 21: Handling Precautions
2A3/4 CONTENTS 1-2 Handling Precautions 1-2-1 Drum ....................1-2-1 1-2-2 Developer and toner ................1-2-1 1-1-7...
Page 22: Developer And Toner
2A3/4 1-2-1 Drum Note the following when handling or storing the drum. • When removing the image formation unit, never expose the drum surface to strong direct light. • Keep the drum at an ambient temperature between –20°C/–4°F and 40°C/104°F and at a relative humidity not higher than 85% RH.
Page 23 2A3/4 CONTENTS 1-3 Mechanical Construction 1-3-1 Parts names and their functions ............1-3-1 1-3-2 Machine cross section ................ 1-3-4 1-3-3 Drive system ..................1-3-5 1-3-4 Mechanical construction ..............1-3-8 (1) Paper feed section ..............1-3-8 (1-1) Paper feed from the drawers ..........1-3-8 (1-2) Paper feed from the bypass table ........
Page 24 2A3/4 1-3-1 Part names and their functions • 42 ppm copier & ⁄ ¤ ‹ › ﬂ ‡ ° ﬁ · ‚ Á Œ Á „ ´ ‰ ˇ ¨ ˆ Figure 1-3-1-a 1 Contact platen ! Duplex unit cover ⁄...
Page 25 2A3/4 • 52 ppm copier ⁄ ¤ ﬂ ‡ ° Î ‹ › ﬁ · ‚ Œ Î „ ´ ‰ ˇ Á ¨ Ø ∏ Å Í ˆ & Figure 1-3-1-b 1 Contact platen @ Lower drawer ‹ DF opening/closing lever ‰...
Page 26 2A3/4 Metric 1 Punch mode key 2 Punch mode indicator 3 Staple sort mode key 4 Staple sort mode indicator 5 Sorter mode key 6 Sort mode indicator 7 Group mode indicator 8 Brightness adjustment control 9 Data indicator 0 Program key ! Manual key @ Add job key # Copier/printer switching key...
Page 27: Machine Cross Section 1
2A3/4 1-3-2 Machine cross section Large paper deck (page 1-3-67) Paper path Figure 1-3-4 Machine cross section—Large paper deck (42 ppm: optional/52 ppm: standard) Light path Paper and original path Figure 1-3-3 Machine cross section—copier and SRDF 1 Paper feed section (page 1-3-8) 2 Main charging section (page 1-3-16) 3 Optical section (page 1-3-19) 4 Developing section (page 1-3-25)
Page 28 2A3/4 1-3-3 Drive system ⁄ Gear 37 65 Tension pulley 10 ¤ Gear 20 § Feed roller 4 pulley ‹ Bypass paper feed clutch gear ¶ Paper conveying motor gear › Gear 18 • Idle gear 43 ﬁ Gear 16 ª...
Page 29 2A3/4 & As viewed from machine front As viewed from machine rear Figure 1-3-6 Drive system—SRDF (inside front of machine) Figure 1-3-7 Drive system—SRDF (inside rear of machine) 1 Lower original conveying pulley 25/18 7 Joint gear 14 1 Original feed motor pulley 0 DF registration pulley 28/18 2 Gear 18/25 8 JAM release gear 14...
Page 30 2A3/4 ﬂ ¤ ¤ & ⁄ › ﬁ ﬁ ⁄ ‹ & As viewed from machine front Figure 1-3-9 Drive system—Large paper deck (42 ppm: optional/52 ppm: standard) 1 Belt 180-6 $ Pulley 20, gear 32 2 Paper feed clutch 1 % One-way drum 3 Paper feed clutch 2 ^ Pulley 18-OW...
Page 31 2A3/4 1-3-4 Mechanical construction (1) Paper feed section The paper section consists of the primary feed and secondary feed subsections. Primary feed conveys paper from the upper drawer, lower drawer or bypass table to the upper and lower registration rollers, at which point secondary feed takes place and the paper travels to the transfer section in sync with the printing timing.
Page 32: Specifications 1
2A3/4 1 Forwarding pulley ﬁ Feed clutch 2 (FCL2) 2 Upper paper feed pulley ﬂ Feed clutch 3 (FCL3) 3 Lower paper feed pulley ‡ Feed clutch 4 (FCL4) ¡ 4 Upper feed roller Feed clutch 5 (FCL5) 5 Lower feed roller ·...
Page 33 2A3/4 Each drawer consists of a lift driven by the lift motor and other components. Each drawer can hold up to 550 sheets of paper. Paper is fed from the drawer by the rotation of the forwarding pulley and upper paper feed pulley.
Page 34 2A3/4 Image ready Print key 174 ms 35 ms FCL4 100 ms FCL5 74 ms 80 ms 250 ms 100 ms PFCL-U 50 ms 58 ms FCL2 163 ms PFSW2 35 ms 28 ms FCL1 PFSW1 A BC Auto copy density control, copy paper: A4/11" × 8 ", magnification ratio 100% Timing chart 1-3-1 Paper feed from the upper drawer 1-3-11...
Page 35 2A3/4 A When the print key is pressed, the paper feed motor (PFM) turns on, and 250 ms later the drive motor (DM) turns on to start drive for the paper feed section. B 100 ms after the print key is pressed, the upper paper feed clutch (PFCL-U) turns on, and the upper and lower paper feed pulleys rotate to start the primary paper feed.
Page 36 2A3/4 (1-2) Paper feed from the bypass table Figure 1-3-12 Bypass paper feed section 1 Bypass table 9 Bypass paper feed clutch 2 Bypass upper guide (BYPPFCL) 3 Bypass lower guide 0 Bypass solenoid (BYPSOL) 4 Bypass stopper ! Bypass paper switch (BYPPSW) 5 Bypass friction plate @ Bypass paper length switch 6 Bypass forwarding pulley...
Page 37 2A3/4 CN14-A8 CN14-A4 BYPPSW CN14-A7 BYPSOL CN8-B11 PFCL CN8-B2 CN13-1 CN12-A2 FCL5 FCL4 CN8-B9 EPCB Figure 1-3-13 Bypass paper feed section block diagram Image ready Print key 115 ms 65 ms 100 ms FCL5 74 ms 80 ms 250 ms 90 ms 100 ms BYPSOL...
Page 38 2A3/4 A When the print key is pressed, the paper feed motor (PFM) turns on, and 250 ms later the drive motor (DM) turn on to start drive for the paper feed section. B 100 ms after the print key is pressed, the bypass solenoid (BYPSOL) turns on. The bypass stopper is then unlocked, and the bypass forwarding pulley lowers to forward the paper.
Page 39: Drum 1
2A3/4 (2) Main charging section The main charging section consists of the drum and the main charger assembly. The main charger assembly charges the drum so that a latent image is formed on the surface, the charger grid ensuring the charge is applied uniformly. Main charger grid Main charger assembly Tungsten wire...
Page 40 2A3/4 Figure 1-3-15 Main charger 1 Main charger front housing 6 Tungsten wire 2 Main charger rear housing 7 Charger spring 3 Main charger front lid 8 Charger terminal 4 Main charger rear lid 9 Charger pin 5 Main charger shield 0 Main charger grid ! Grid tension plate 24 V DC...
Page 41 2A3/4 Print key 360 ms CFM1 520 ms 300 ms MC REM 290-30000 ms Auto copy density control, copy paper: A4/11" × 8 ", magnification ratio 100% Timing chart1-3-3 Main charging A When the print key is pressed, the paper feed motor (PFM) turns on. B 520 ms after the paper feed motor (PFM) turns on, main charging (MC REM) starts.
Page 42 2A3/4 (3) Optical section The optical section consists of the scanner, mirror frame and image scanning unit for scanning and the laser scanner unit for printing. Figure 1-3-17 Optical section 1 Scanner 8 Image scanning unit 2 Mirror frame 9 Lens 3 Mirror 1 0 Optical rail 4 Mirror 2...
Page 43 2A3/4 Original scanning The original image is illuminated by the exposure lamp (EL) and scanned by the CCD PCB (CCDPCB) in the image scanning unit via the three mirrors, the reflected light being converted to an electrical signal. The scanner and mirror frame travel to scan on the optical rails on the front and rear of the machine to scan from side to side.
Page 44 2A3/4 Print key 410 P Fwd. rotation 414 P Rev. rotation 9921 P 110 P SHPSW FVSYNC signal Manual copy density control, copy paper: A3/11" × 17", magnification ratio 100% Timing chart 1-3-4 Scanner operation A When the print key is pressed, the scanner motor (SM) reverses for 410 pulses and then rotates forward.
Page 45 2A3/4 Image printing The image data scanned by the CCD PCB (CCDPCB) is processed on the main PCB (MPCB) and transmitted as image printing data to the laser scanner unit (LSU). By repeatedly turning the laser on and off, the laser scanner unit forms a latent image on the drum surface.
Page 46 2A3/4 Drum Figure 1-3-20 Laser scanner unit (2) 1 Laser diodes: Generate the laser beams that form the latent image on the drum. 2 Collimator lenses: Collimate the diffused laser beams emitted from the laser diodes into cylindrical beams. 3 Beam splitter: Refracts the laser beam emitted from one of the laser diodes so that it becomes parallel to the other laser beam, and sends those two beams to lens 1.
Page 47 2A3/4 The dimensions of the laser beam are as shown in Figure 1-3-19. 70 µm 65 µm Figure 1-3-21 Scanning in the main direction is provided by the rotating polygon mirror, while scanning in the auxiliary direction is provided by the rotating drum, forming a static latent image on the drum.
Page 48 2A3/4 (4) Developing section The developing section consists of the developing unit and the toner recycling assembly. Developing unit Toner sub hopper Figure 1-3-23 Developing section The developing unit consists of the developing roller where a magnetic brush is formed, the doctor blade and the developing spirals that agitate the developer.
Page 49 2A3/4 Toner cartridge paddle Toner cartridge spiral Toner cartridge Toner recycle paddle B Toner hopper lockup sensor Toner recycle spiral Toner level sensor Cleaning unit Toner recycle paddle A Cleaning spiral Toner feed motor Main hopper spiral Developing unit Toner sub hopper Toner main hopper Sub hopper spiral Toner recycle motor...
Page 50 2A3/4 Formation of magnetic brush The developing roller consists of a magnet roller with five poles and a sleeve roller. Rotation of the sleeve roller around the magnet roller entrains developer, which in turn forms a magnetic brush at pole N1 on the magnet roller. The height of the magnet brush is regulated by the doctor blade;...
Page 51 2A3/4 TFM– CN2-A5 TFM+ CN2-A6 TRM– CN2-A7 TRM+ CN2-A8 TLDS CN2-B3 CN2-A10 TNS SIG CN2-B11 TNS CONT CN2-B9 DB REM CN5-B10 CN1-4 DB CONT CN5-B8 CN1-6 24 V DC CN5-B1 CN1-13 EPCB HVTPCB Figure 1-3-26 Developing section block diagram Toner density is detected by the toner sensor (TNS). The sensor section of the toner sensor detects the ratio of toner to carrier in the developer near it and converts it into a voltage.
Page 52 2A3/4 Toner density control Toner density control is conducted using the TARGET value as the reference which is the toner sensor initial output value set by maintenance item U130 when developer is loaded for the first time. Toner request message Toner being replenished message (Toner cartridge to be replaced.) Toner sensor...
Page 53 2A3/4 F When the toner sensor output voltage drops to the toner empty reset level, the toner being replenished message disappears, and both the toner feed motor (TFM) and toner recycle motor (TRM) operates intermittently—on for 0.5 s and off for 0.5 s—to replenish toner.
Page 54 2A3/4 Correcting toner feed start level The toner feed start level is corrected based on the absolute humidity and the drive time so that toner density becomes proper depending on the change of the humidity and the drive time. • Correction based on the absolute humidity Correction at the toner feed start level (V) 0.74...
Page 55 2A3/4 Computing the absolute humidity The external humidity sensor (EHUMSENS) and external temperature thermistor (ETTH) are located on the humidity sensor PCB (HUMPCB). The external humidity sensor (EHUMSENS) converts the relative humidity detected by the humidity sensing element into a voltage and sends it to the engine PCB (EPCB). The main PCB (MPCB)computes the absolute humidity based on this EHUMSENS signal and the temperature (ETTH signal) detected by the external temperature thermistor (ETTH).
Page 56 2A3/4 • Correction based on the total drive motor time The toner feed start level is also corrected based on the total time the drive motor (DM) has been on from execution of maintenance item U130, so that the toner sensor output is regulated properly.
Page 57 2A3/4 Toner level detection The toner level in the toner main hopper is monitored by the toner level detection sensor (TLDS). It converts the presence or absence of toner in the toner main hopper into a voltage and sends it to the main PCB (MPCB), which triggers a message to request the toner cartridge to be replaced before the recycled toner ratio in the toner main hopper reaches a significant level.
Page 58 2A3/4 Toner hopper lockup detection The amount of recycled toner in the toner main hopper is monitored by the toner hopper lockup sensor (TLS). It converts the presence or absence of toner in the toner main hopper into a voltage and sends it to the main PCB, which prevents toner main hopper lockup as the amount of the recycled toner in the hopper increases.
Page 59 2A3/4 (5) Transfer and separation section Drum separation claw Tungsten wires Transfer charger assembly Figure 1-3-33 Transfer and separation section The transfer and separation section consists of the transfer charger assembly and drum separation claws. The transfer charger assembly consists of the transfer charger that applies a high voltage to transfer the toner image from the drum surface onto the paper, and the separation charger that helps the paper separate from the drum surface.
Page 60 2A3/4 TC REM CN5-B7 CN1-7 TC CONT CN5-B6 CN1-8 SC REM CN5-B5 CN1-9 SC CONT CN5-B4 CN1-10 ST ALM CN5-B3 CN1-11 24 V DC CN5-B1 CN1-13 EPCB HVTPCB Drum Figure 1-3-34 Transfer and separation section block diagram 1-3-37...
Page 61 2A3/4 Charger wire cleaning The charger wires are cleaned by the transfer charger cleaning pad and separation charger cleaning pad traveling along each wire. The pads are placed on a slider which moves back and forth along the charger cleaning spiral as the spiral is turned by the charger cleaning motor (CCM).
Page 62 2A3/4 Image ready Secondary paper feed start Secondary paper feed end Print key 360 ms CFM1 520 ms 300 ms MC REM 290-30000 ms SC REM 700 ms 74 ms 80 ms 210 ms 270 ms TC REM Auto copy density control, copy paper: A4/11" × 8 ", magnification ratio 100% Timing chart 1-3-5 Transfer and separation A When the print key is pressed, the paper feed motor (PFM) turns on.
Page 63 2A3/4 (6) Cleaning section The cleaning section consists of the cleaning blade and brush that remove residual toner from the drum surface after the transfer process, and the cleaning spiral that carries the residual toner back to the toner recycling assembly. Figure 1-3-36 Cleaning section 1 Drum 2 Cleaning blade...
Page 64 2A3/4 (7) Charge erasing section The cleaning lamp (CL) consists of 36 LEDs which remove residual charge from the drum surface. Cleaning lamp Figure 1-3-37 Charge erasing section CL REM CN2-A2 Drum EPCB Figure 1-3-38 Charge erasing section block diagram 1-3-41...
Page 65 2A3/4 Print key 50 ms 600 ms Auto copy density control, copy paper: A4/11" × 8 ", magnification ratio 100% Timing chart 1-3-6 Charge erasing A When the print key is pressed, the paper feed motor (PFM) turns on. B 50 ms after the paper feed motor (PFM) turns on, the cleaning lamp (CL) lights to remove the residual charge from the drum surface after the residual toner is removed by the cleaning section.
Page 66 2A3/4 (8) Fixing section Figure 1-3-39 Fixing section 1 Fixing unit upper cover 8 Fixing heater M (H1) 2 Fixing unit front guide 9 Fixing heater S (H2) 3 Fixing unit upper guide 0 Eject switch (ESW) 4 Fixing unit lower left guide ! Fixing unit thermostat (TH) 5 Heat roller @ Fixing unit thermistor (FTH)
Page 67 2A3/4 The fixing section consists of the parts shown in Figure 1-3-39. When paper reaches the fixing section after the transfer process, it passes between the press roller and heat roller, which is heated by fixing heaters M or S (H1 or H2). Pressure is applied by the pressure springs so that the toner on the paper is melted, fused and fixed onto the paper.
Page 68 2A3/4 Heating the heat roller and detecting temperature Figure 1-3-41 Heating the heat roller and detecting temperature 1 Heat roller 4 Fixing unit thermostat (TH) 2 Fixing heater M (H1) 5 Fixing unit themistor (FTH) 3 Fixing heater S (H2) The heat roller is heated by fixing heaters M or S (H1 or H2) inside it;...
Page 69 2A3/4 Fixing temperature control Charger wire cleaning 200 ms 270 ms 50 ms 600 ms DB REM Half speed Full speed Half speed CFM1 PCFM IFFM CD E G H I *1: 42 ppm: 180°C/356°F *2: 42 ppm: 60 s *3: 42 ppm: 116 s 52 ppm: 190°C/374°F 52 ppm: 120 s...
Page 70 2A3/4 C When the fixing temperature reaches 175°C/347°F, the copier enters primary stabilization. 50 ms later the cleaning lamp (CL) and developing bias (DB REM) turn on and primary stabilization starts. D 200 ms after the cleaning lamp (CL) turns on, the drive motor (DM) turns on. E 270 ms after the drive motor (DM) turns on, the paper conveying motor (PCM), paper conveying fan motor (PCFM) and image formation section fan motor (IFFM) turn on and cooling fan motor 1 (CFM1) rotates at full speed.
Page 71 2A3/4 Paper separation Paper is separated in the fixing section by the separation claws as shown in Figure 1-3- Heat roller Heat roller separation claws Press roller separation claws Press roller Figure 1-3-42 Paper separation 1-3-48...
Page 72 2A3/4 (9) Feedshift and eject section The feedshift and eject section consists of the parts shown in Figure 1-3-43. When fixing is complete, the conveying path is switched by the feedshift guide to eject the paper to either the copy tray or duplex unit. &...
Page 73 2A3/4 FSSOL1 CN3-A8 FSSOL2 CN3-A9 FSSOL CN3-B9 CN3-A1 FSSW CN3-A4 EPCB Figure 1-3-44 Feedshift and eject section block diagram 1-3-50...
Page 74 2A3/4 (10) Duplex section In duplex copy mode, the paper copied onto the first face (rear face) is sent to the duplex section for side registration and switchback, and refeed for copying onto the second face (front face). & ! Figure 1-3-45 Duplex section 1 Duplex forwarding pulley 0 Duplex eject roller...
Page 75 2A3/4 When the paper is sent to the duplex section, the duplex paper tapping solenoid (DUPPTSOL) lowers, which forwards the paper by means of the rotation of the duplex forwarding pulley until it is caught by the switchback roller. In duplex copy mode, the switchback feedshift solenoid (SBFSSOL) turns on to operate the switchback feedshift guide.
Page 76 2A3/4 EPCB SBFSSOL STKSW SRHPSW DUPFWDSOL DUPRSW DUPESW PCSW PTSOL Figure 1-3-47 Duplex section block diagram 1-3-53...
Page 77 2A3/4 Duplex copying operation timing Image ready 1160 ms FSSOL SBFSSOL FSSW 30 ms DUPFWDSOL 80 ms DUPPTSOL 60 ms Fwd. rotation 12 P Rev. rotation SRHPSW 74 ms STKSW DE F Copy paper: A4/11" × 8 ", 100% magnification Timing chart 1-3-8 Feedshift and side registration A 74 ms after the image ready signal turns on during copying onto the first face (back), the registration clutch (RCL) turns on to start secondary paper feed.
Page 78 2A3/4 1160 ms FSSOL 360 ms SBFSSOL Fwd. rotation 500 ms 500 ms 500 ms Rev. rotation SRHPSW DUPRSW DUPPCSW DUPESW 232 ms FCL1 30 ms FCL4 35 ms 74 ms 100 ms FCL5 80 ms A B C D Copy paper: A4/11"...
Page 79 2A3/4 J When the side registration home position switch (SRHPSW) turns on, the side registration motor (SRM) turns off. K 500 ms after the side registration home position switch (SRHPSW) turns on, the side registration motor (SRM) rotates forward to move the side registration guides inwards. L When the side registration home position switch (SRHPSW) turns off, the side registration motor (SRM) turns off.
Page 80 2A3/4 (11) SRDF (11-1) Original feed section The original feed section consists of the parts shown in Figure 1-3-48. An original placed on the original table is conveyed to the original switchback section or the original conveying section. Figure 1-3-48 Original feed section 1 Original table 8 DF registration pulley 2 DF forwarding pulleys...
Page 81 2A3/4 OFSOL OFCL OFSW OSSW DFDPCB Figure 1-3-49 Original feed section block diagram 1-3-58...
Page 82 2A3/4 Original feed timing 200 ms OFSOL A 200 ms OFSOL R OFCL Fwd. rotation Rev. rotation 556 P* 20 ms OFSW OSBSW 288 P* DFTSW + 30 ms Burst of OFM pulses Burst of OCM pulses Timing chart 1-3-10 Original feed (in double-sided original mode) A The OFSOL A signal turns on for 200 ms and then the original feed solenoid (OFSOL) turns on, lowering the DF forwarding pulleys and releasing the original stopper to convey the original forward.
Page 83 2A3/4 (11-2) Original switchback section The original switchback section consists of the parts shown in Figure 1-3-50. The original from the original feed section or original conveying section is reversed and conveyed to the original conveying section. Figure 1-3-50 Original switchback section 1 Switchback pulley 5 Switchback guide 2 Switchback roller...
Page 84 2A3/4 SBPSOL SBFSSOL OSBSW DFDPCB Figure 1-3-51 Original switchback section block diagram 1-3-61...
Page 85 2A3/4 Operation of original switchback In the double-sided original mode, the switchback feedshift solenoid (SBFSSOL) turns on, changing the position of the switchback feedshift guide. This switches the path of the original to the original switchback section to where the original is fed. The switchback feedshift solenoid (SBFSSOL) then turns off, allowing the switchback feedshift guide to return to the original position by which the path of the original is switched back to the original conveying section.
Page 86 2A3/4 (11-3) Original conveying section The original conveying section consists of the parts shown in Figure 1-3-53. Synchronized with the copier scanning operation, the original is conveyed across the slit glass and ejected when scanning is complete. In the double-sided original mode, the eject feedshift solenoid (EFSSOL) turns on, moving the eject feedshift guide to switch the path of the original.
Page 87 2A3/4 EFSSOL DFTSW DFDPCB Figure 1-3-54 Original conveying section block diagram 1-3-64...
Page 88 2A3/4 Original switchback/conveying timing Scanning speed 100 ms Fwd. rotation 556 P* Rev. rotation 30 ms 20 ms OFSW 288 P* 115 P* SBFSSOL SBPSOL OSBSW Scanning speed EFSSOL DFTSW Burst of OFM pulses Burst of OCM pulses Timing chart 1-3-11 Reversing the first face of the original A During primary original feed, when the original feed switch (OFSW) turns on, the switchback feedshift solenoid (SBFSSOL) also turns on, changing the position of the switchback feedshift guide.
Page 89 2A3/4 Scanning request signal : On Scanning speed Fwd. rotation Rev. rotation 327 P* 100 ms OFSW 100 ms 115 P* SBFSSOL 30 ms 288 P* SBPSOL 564 P* 2337 P* + 30 ms OSBSW Scanning speed 30 ms EFSSOL DFTSW Burst of OFM pulses Burst of OCM pulses...
Page 90 2A3/4 (12) Large paper deck (42 ppm: optional/52 ppm: standard) The large paper deck consists mainly of the right and left cassettes and separation section. The right cassette primary paper feed section sends paper from the lift to the upper and lower deck separation rollers. When the right cassette becomes empty, the left cassette primary paper feed section conveys paper onto the lift of the right cassette.
Page 91 2A3/4 68 4 0 ! 3 2 ¤ ⁄ ) * # @ & Figure 1-3-56 Mechanical construction (2) 1 Paper path sensor 1 (PPSENS1) $ Deck open/closed safety switch 2 Paper path sensor 2 (PPSENS2) (DOSSW) 3 Paper path sensor 3 (PPSENS3) % Side cover switch (SCSW) 4 Paper empty sensor (PESENS) ^ Deck paper conveying motor (CM)
Page 92 2A3/4 (12-1) Right cassette primary paper feed As paper feed clutch 1 (PFCL1) turns on, the drive is transmitted to deck paper feed roller 1 and the upper and lower deck separation rollers, starting primary paper feed from the right cassette. The upper and lower deck separation rollers ensure that the paper is fed one sheet at a time and that it is fed into the copier correctly.
Page 93 2A3/4 FCL3 Feed pulley Paper path Feed roller 4 Upper deck separation roller Copier PFCL1 Deck paper feed roller 1 PFSW4 Lift Lower deck separation roller Figure 1-3-57 Right cassette paper feed section 1-3-70...
Page 94 2A3/4 • When the right cassette is empty, its lift serves as a guide for the paper being conveyed from the left cassette lift. PFSW4 (copier) PFCL1 PFCL1 PFCL1 CN4-4 CN9-5 CN5-6 CN1-4 PFSW4 (copier) I/FPCB PDMPCB Figure 1-3-58 Right cassette primary paper feed section block diagram 1-3-71...
Page 95 2A3/4 (12-2) Left cassette primary paper feed As the last sheet in the right cassette is fed, paper feed clutch 2 (PFCL2) and the paper conveying clutch (CCL) turn on for primary feed from the left cassette. Deck paper feed roller 2 and the deck paper conveying roller start to rotate to convey paper from the left cassette onto the right cassette lift.
Page 96 2A3/4 PFSW4 (copier) Paper path PPSENS2 PFCL2 PPSENS3 PPSENS1 Deck paper feed roller 2 Deck paper conveying roller Figure 1-3-59 Left cassette paper feed section PFSW4 (copier) PFCL2 PPSENS3 PPSENS2 PPSENS1 PFSW4 (copier) PPSENS2 PPSENS2 CN4-8 CN2-6 CN1-6 CN9-5 PPSENS3 PPSENS3 CN4-2 CN2-11...
Page 97 2A3/4 (12-3) Raising and lowering the lifts The following is a description of the right cassette lift operating mechanism. The left cassette lift operates in the same manner. Paper deck motor 1 (PDM1) drives the right lift belt assembly that winches the belt up and hence raises the lift until it is stopped by deck level switch 1 (DLSW1).
Page 98 2A3/4 DLSW1 DLSW2 PDM2 PDM1 DLSW1 DLSW1 CN3-3 CN2-7 CN1-7 DLSW2 DLSW2 CN3-9 CN2-9 CN1-9 PDM1 CN7-1 PDM2 CN7-4 I/FPCB PDMPCB Figure 1-3-62 Lift block diagram 1-3-75...
Page 99 2A3/4 (12-4) Detecting the paper level The lift rises as paper in the deck is used. When the remaining number of sheets in either right or left cassette reduces to around 100 to 250 sheets, the projection on the lift belt assembly pushes against the sensor lever which turns the relevant paper level detection sensor 1 or 2 (PLDSENS1/2) on.
Page 100: Electrical Section
ELECTRICAL SECTION 4230/5230 S/M (MCA)
Page 101: Electrical Parts Layout
2A3/4 CONTENTS 2-1 Electrical Parts Layout 2-1-1 Electrical parts layout ................2-1-1 (1) Copier ..................2-1-1 (2) SRDF ..................2-1-11 (3) Large paper deck (42 ppm: optional/52 ppm: standard) ... 2-1-15 1-1-11...
Page 102 2A3/4 2-1-1 Electrical parts layout (1) Copier Machine front side Machine inside Machine back side Figure 2-1-1 Copier (PCBs) 1. Main PCB (MPCB) ........Controls the other PCBs, electrical components and optional devices; image processing. 2. Power source PCB (PSPCB) ....... Generates 24 V DC, +12 V DC and 5 V DC;...
Page 103 2A3/4 11. LCD ............. Displays copy modes and messages. 12. Touch panel ..........Consists of a touch-sensitive layer which detects presses of operation keys displayed on the LCD. 13. Humidity sensor PCB (HUMPCB) ....Detects the absolute humidity. • External humidity sensor (EHUMSENS) ... Detects the external humidity. •...
Page 104 2A3/4 Machine front side Machine inside Machine back side Figure 2-1-2 Copier (switches and sensors in the scanning system) 1. Scanner home position switch (SHPSW) ..Detects the scanner in the home position. 2. Original detection switch (ODSW) ....Operates the original size sensors. 3.
Page 105 2A3/4 long paper. 11. Upper lift limit switch (LICSW-U) ....Detects the upper drawer lift reaching the upper limit. 12. Lower lift limit switch (LICSW-L) ....Detects the lower drawer lift reaching the upper limit. 13. Paper feed switch 1 (PFSW1) ..... Controls feed clutch 4. 14.
Page 106 2A3/4 8. Bypass paper length switch (BYPPLSW) ..Detects the length of paper on the bypass table. 9. Bypass paper width switch (BYPPWSW) ..Detects the width of paper on the bypass table. 10. Bypass table extended detection switch ..Detects when the bypass table support (BYPEDSW) guide is extended to use long paper.
Page 107 2A3/4 Machine front side Machine inside Machine back side Figure 2-1-4 Copier (switches and sensors) 1. Main switch (MSW) ........Turns the AC power on and off. 2. Safety switch 1 (SSW1) ....... Breaks the safety circuit when the front cover is opened;...
Page 108 2A3/4 12,13 Machine front side Machine inside Machine back side Figure 2-1-5 Copier (motors) 1. Scanner motor (SM) ........Drives the scanner. 2. Drive motor (DM) ......... Drives the image formation section. 3. Paper feed motor (PFM) ......Drives the paper feed section. 4.
Page 109 2A3/4 Machine front side Machine inside Machine back side Figure 2-1-6 Copier (clutches and solenoids) 1. Upper paper feed clutch (PFCL-U) ....Primary paper feed from the upper drawer. 2. Lower paper feed clutch (PFCL-L) ....Primary paper feed from the lower drawer.
Page 110 2A3/4 Machine front side Machine inside Machine back side Figure 2-1-7 Copier (feedshift and duplex sections) 1. Feedshift switch (FSSW) ......Detects a paper jam in the feedshift section. 2. Switchback eject switch (SBESW) ....Detects a paper jam in the switchback eject section.
Page 111 2A3/4 Machine front side Machine inside Machine back side Figure 2-1-8 Copier (other electrical components) 1. Exposure lamp (EL) ........Exposes originals. 2. Cleaning lamp (CL) ........Removes residual charge from the drum surface. 3. Fixing heater M (H1) ........Heats the heat roller. 4.
Page 112 2A3/4 (2) SRDF Machine front side Machine inside Machine back side Figure 2-1-9 SRDF (PCBs) 1. DF driver PCB (DFDPCB) ......Controls electrical components of SRDF. 2. Original set LED PCB (OSLEDPCB) ... Indicates presence of originals on the SRDF or an original jam. 2-1-11...
Page 113 2A3/4 2AD-1 Machine front side Machine inside Machine back side Figure 2-1-10 SRDF (switches and sensors) 1. DF safety switch 1 (DFSSW1) ..... Breaks the safety circuit when the SRDF is opened; resets original jam detection. 2. DF safety switch 2 (DFSSW2) ..... Breaks the safety circuit when the DF original reversing cover is opened;...
Page 114 2A3/4 Machine front side Machine inside Machine back side Figure 2-1-11 SRDF (motors) 1. Original feed motor (OFM) ......Drives the original feed and switchback sections. 2. Original conveying motor (OCM) ....Drives the original conveying section. 2-1-13...
Page 115 2A3/4 Machine front side Machine inside Machine back side Figure 2-1-12 SRDF (clutches and solenoids) 1. Original feed solenoid (OFSOL) ....Moves the DF forwarding pulleys vertically. 2. Switchback feedshift solenoid ..... Moves the switchback feedshift guide. (SBFSSOL) 3. Eject feedshift solenoid (EFSSOL) ....Moves the eject feedshift guide. 4.
Page 116 2A3/4 (3) Large paper deck (42 ppm: optional/52 ppm: standard) Machine front side Machine inside Machine back side Figure 2-1-13 Large paper deck (PCBs) 1. Deck main PCB (PDMPCB) .... Controls other PCBs and electrical components. 2. Interface PCB (I/FPCB) ....Interfaces between the deck main PCB and other electrical components.
Page 117 2A3/4 1 10 Machine front side Machine inside Machine back side Figure 2-1-14 Large paper deck (switches and sensors) 1. Paper path sensor 1 (PPSENS1) ..Detect paper jams and the absence of paper on the lifts. 2. Paper path sensor 2 (PPSENS2) ..Detect paper jams and the absence of paper on the lifts.
Page 118 2A3/4 Machine front side Machine inside Machine back side Figure 2-1-15 Large paper deck (other electrical components) 1. Deck paper conveying motor ..Drives the large paper deck. (CM) 2. Paper deck motor 1 (PDM1) ... Raises the right cassette lift. 3.
Page 120: Detection Of Paper Misfeed
2A3/4 CONTENTS 2-2 Detection of Paper Misfeed 2-2-1 Paper misfeed detection ..............2-2-1 2-2-2 Paper misfeed detection conditions ............ 2-2-2 (1) Copier ..................2-2-2 (2) Large paper deck (42 ppm: optonal/52 ppm: standard) .... 2-2-11 (3) Paper feed desk (optional for 42 ppm only) ......2-2-13 (4) Finisher (optional) ..............
Page 121: Paper Misfeed Detection
2A3/4 2-2-1 Paper misfeed detection When a paper jam occurs, the machine immediately stops operation and displays a message on the touch panel in the operation unit indicating a paper jam, the jam location and the jam code. To remove the jammed paper, open either the drawer, duplex unit, front cover, right cover or left cover as necessary.
Page 122: Paper Misfeed Detection Conditions
2A3/4 2-2-2 Paper misfeed detection conditions (1) Copier BYPPFCL SBESW FSSW PFSW1 DUPFWDSOL DUPRSW DUPPCSW PFSW2 PFCL-U DUPESW PFSW3 PFCL-L PFSW4 Figure 2-2-2 Copier 2-2-2...
Page 123 2A3/4 1. Jam at power-on (jam code 00) • One or more of the switches in the paper conveying system is on when the main switch is turned on. 2. Paper feed section • No paper feed from copier upper drawer (jam code 10) Paper feed switch 2 (PFSW2) does not turn on within 656 ms after the upper paper feed clutch (PFCL-U) is turned on;...
Page 124 2A3/4 • Jam in copier vertical paper conveying section (jam code 18) The feed switch (FSW) does not turn on within 780 ms of paper feed switch 1 (PFSW1) turning on. PFSW1 780 ms Timing chart 2-2-4 Paper feed switch 1 (PFSW1) does not turn on within 733 ms of paper feed switch 2 (PFSW2) turning on.
Page 125 2A3/4 • Multiple sheets in paper feed section (jam code 21) Paper feed switch 2 or 3 (PFSW2 or 3) does not turn off within 1470 ms of turning on. PFSW2 1470 ms PFSW3 Timing chart 2-2-8 • Multiple sheets in copier vertical conveying section (jam code 22) Paper feed switch 1 (PFSW1) does not turn off within 733 ms of paper feed switch 2 (PFSW2) turning off.
Page 126 2A3/4 • Multiple sheets before registration section (jam code 23) The feed switch (FSW) does not turn off within 1340 ms of paper feed switch 1 (PFSW1) turning off. PFSW1 1340 ms Timing chart 2-2-12 The feed switch (FSW) does not turn off within 2528 ms of turning on during bypass paper feed.
Page 127 2A3/4 4. Fixing section • Jam in fixing section (jam code 40) The eject switch (ESW) does not turn on within 2552 ms of the registration clutch (RCL) turning on. 2552 ms Timing chart 2-2-15 5. Eject section • Jam in eject section (jam code 50) The eject switch (ESW) does not turn off within 2528 ms of turning on.
Page 128 2A3/4 6. Feedshift section • Jam in feedshift section (jam code 52) The feedshift switch (FSSW) does not turn on within 1400 ms of the eject switch (ESW) turning on. 1400 ms FSSW Timing chart 2-2-18 The feedshift switch (FSSW) does not turn off within 1400 ms of the eject switch (ESW) turning off.
Page 129 2A3/4 The duplex registration switch (DUPRSW) does not turn on within 707 ms of the duplex forward solenoid (DUPFWDSOL) turning on. DUPFWDSOL 707 ms DUPRSW Timing chart 2-2-21 • Duplex paper conveying section (jam code 61) The duplex paper conveying switch (DUPPCSW) does not turn on within 860 ms of the duplex registration switch (DUPRSW) turning on.
Page 130 2A3/4 Duplex registration switch (DUPRSW) does not turn off within 1470 ms of turning on. 1470 ms DUPRSW Timing chart 2-2-25 Duplex paper conveying switch (DUPPCSW) does not turn off within 860 ms of the duplex registration switch (DUPRSW) turning off. DUPRSW 860 ms DUPPCSW...
Page 131 2A3/4 (2) Large paper deck (42 ppm: optional/52 ppm: standard) PFSW4 PPSENS2 PPSENS1 PPSENS3 PFCL2 PFCL1 Figure 2-2-3 Large paper deck • No paper feed from large paper deck (jam code 12) Paper feed switch 4 (PFSW4) does not turn on within 672 ms of paper feed clutch 1 (PFCL1) turning on;...
Page 132 2A3/4 • Paper failing to reach PPS2 in large paper deck horizontal paper path (jam code 15) Paper path sensor 3 (PPSENS3) does not turn on within 260 ms of paper feed clutch 2 (PFCL2) turning on. PFCL2 260 ms PPSENS3 Timing chart 2-2-30 •...
Page 133 2A3/4 (3) Paper feed desk (optional for 42 ppm only) (see the paper feed desk service manual) • No paper feed from paper feed desk upper drawer (jam code 12) • No paper feed from paper feed desk lower drawer (jam code 13) •...
Page 134: Original Misfeed Detection
2A3/4 2-2-3 Original misfeed detection When an original jams, the machine immediately stops operation and a message is shown on the touch panel in the operation unit. The SRDF original set indicator also flashes red. To remove the jammed original, open the SRDF or DF original reversing cover. To reset the original misfeed detection, open and close the SRDF or DF original reversing cover to turn DF safety switch 1 or 2 off and on.
Page 135: Original Misfeed Detection Conditions
2A3/4 2-2-4 Original misfeed detection conditions • Initial movement confirmation JAM When the DF START signal is received, switches other than the original set switch (OSSW) and the original size length switch (OSLSW) on the original table are on. • No paper feed (jam code 70) During the primary feed of the second or later original in the single-sided or double- sided original mode, the original feed switch (OFSW) does not turn on within 3150 original feed motor (OFM) pulses from the start of forward rotation of the original feed...
Page 136 2A3/4 During original switchback operation in the double-sided original mode, the original feed switch (OFSW) remains on when the original switchback switch (OSBSW) turns off. OSBSW OFSW Timing chart 2-2-35 During the secondary original feed in the single-sided or double-sided original mode, the DF timing switch (DFTSW) does not turn on within 10200 original conveying motor (OCM) pulses from the DF timing switch (DFTSW) turning on.
Page 137 2A3/4 • An original jam in the original switchback section (jam code 72) During the switchback operation of an original in the double-sided original mode, the original switchback switch (OSBSW) does not turn on within 2520 original feed motor (OFM) pulses from the start of reverse rotation of the original feed motor (OFM). On (Rev.) 2520 P* OSBSW...
Page 139: Operation Of The Pcbs
2A3/4 CONTENTS 2-3 Operation of the PCBs 2-3-1 Power source PCB ................2-3-1 2-3-2 Engine PCB ..................2-3-3 2-3-3 Main PCB .................... 2-3-4 2-3-4 Memory copy PCB ................2-3-6 2-3-5 Scanner motor PCB ................2-3-8 2-3-6 CCD PCB .................... 2-3-9 2-3-7 DF driver PCB ...................
Page 140: Power Source Pcb
2A3/4 2-3-1 Power source PCB PSPCB Rectifier circuit D001 TRNS Noise filter Noise filter circuit L1 circuit L2 C101 Zero-cross circuit R129 PWM control circuit (IC1) H2 REM H1 REM SLEEP SIG D201 24 V DC 24 V DC output circuit Q201 D202 L201...
Page 141 2A3/4 The power source PCB (PSPCB) is a switching regulator which converts an AC input to generate 24 V DC, 5.1 V DC and 12 V DC. It consists of the components shown in Figure 2-3-1; noise filter circuit, rectifier circuit, switching control circuit, 24 V DC output circuit, 5.1 V DC output circuit, 12 V DC output circuit, fixing heater control circuit, overvoltage detection circuit, overcurrent detection circuit.
Page 142: Engine Pcb
2A3/4 2-3-2 Engine PCB long paper. 11. Upper lift limit switch (LICSW-U) ....Detects the upper drawer lift reaching the upper limit. EPCB 12. Lower lift limit switch (LICSW-L) ....Detects the lower drawer lift reaching the upper limit. 13. Paper feed switch 1 (PFSW1) ..... Controls feed clutch 4. 14.
Page 143: Main Pcb
2A3/4 2-3-3 Main PCB CCDPCB Operation unit Printer Board* main PCB MPCB Scanner EPROM IC54 motor IC18,19 IC28 MAIN CPU IC23 SELA IC29 SELB SCANNER EPROM SRDF IC45 IC53 IC41 Memory copy Communication BUCKUP RAM IC15 PCB1 microcomputer 1 IC33 Memory SRAM copy...
Page 144 2A3/4 The main PCB (MPCB) consists of the main CPU (IC23), the engine CPU (IC66), the scanner CPU (IC53), communication microcomputers (IC33 and IC56), SRAMs (IC13 and IC55), battery-integrated RAM for back-up (IC15), EPROMs (IC45, IC54, and IC57), a dual port RAM (IC44), ASICs for input and output control (XIO:IC60 and IC63), ASICs for controlling image data input (SHD:IC29 and MIP:IC41), an ASIC for controlling image data output (VTC:IC47)etc.
Page 145: Memory Copy Pcb
2A3/4 2-3-4 Memory copy PCB Address bus Data bus Clock frequency 31.8 MHz Clock frequency 3.6864 MHz SRAM U4,11 EPROM ASIC Clock frequency 39.86 MHz CODEC Clock frequency 24.39 MHz Address bus DRAMs U13, 14, 15, 18, 19, 20 Data bus CODEC Address bus Sort...
Page 146 2A3/4 The following is a description of memory copy PCB 1 (MCPCB1). Memory copy PCB 2 (MCPCB2) is identical to memory copy PCB 1 (MCPCB1). Memory copy PCB 1 (MCPCB1) consists of CPU U17, ASIC U16, SRAMs U4 and U11, DRAMs U13, U14, U15, U18, U19 and U20, EPROM U1, and CODECs U25 and U26.
Page 147: Scanner Motor Pcb
2A3/4 2-3-5 Scanner motor PCB SMPCB SM Vref SM M1–M3 SM CWB SM CLK SM A SM ENABLE Driver IC1 SM A SM B SM B 5 V DC Scanner control PCB SHPSW ODSW OSD1 OSD2* EL ON REM INPCB 24 V DC Power source PCB...
Page 148: Ccd Pcb
2AD-1 2A3/4 2-3-6 CCD PCB Main PCB CCDPCB Clock driver Clock 11 clks 4 clks generation Emitter follower circuit Image processing circuit Emitter Even follower circuit Figure 2-3-6 CCD PCB block diagram The CCD PCB (CCDPCB) receives clock signals φ SHIFT, φ CLK, φ RS, φ CLP and generate eleven signals based on those clock signals necessary to drive the CCD IC1.
Page 149: Df Driver Pcb
2A3/4 2-3-7 DF driver PCB DFDPCB 24 V DC 24 V DC OCM A OCM B Motor driver IC OCM A OCM B 24 V DC 24 V DC Main OFM A OFM B Motor OFM A driver IC OFM B Switches Clutches, solenoids...
Page 150: Operation Unit Left Pcb
2A3/4 2-3-8 Operation unit main PCB, operation unit right PCB, and operation unit left PCB OMPCB Address bus OLPCB Data bus lighting EPROM circuit IC12 unit Main Scan signal IC19 EPROM Return signal IC16 switch/LED display ODSW SRAM ORPCB Touch Touch panel panel...
Page 151 2A3/4 On the operation unit main PCB (OMPCB), the major component is the CPU IC19, which directly controls the operation of the machine in response to a control program located in EPROM IC12 and executed from SRAM IC9. EPROM IC16 contains font data for the LCD display and LCD controller IC11 controls the LCD panel display from instructions contained in SRAM IC20.
Page 152 2A3/4 (1) Operation unit left PCB KEY1 KEY4 KEY6 KEY2 KEY5 KEY7 DIGKEY L1 CNA-5 DIGKEY L2 CNA-6 KEY3 DIGKEY L3 CNA-7 SCAN L1 CNA-8 SCAN L2 CNA-9 SCAN L3 CNA-10 Operation unit main CNA-16 CNA-18 DIGLED L1 CNA-11 DIGLED L2 CNA-12 DIGLED L3 CNA-13...
Page 153 2A3/4 (2) Operation unit right PCB N.C. KEY8 KEY12 KEY16 KEY20 KEY9 KEY13 KEY17 KEY21 DIGKEY R1 CNB-1 KEY10 KEY14 KEY18 KEY22 DIGKEY R2 CNB-2 DIGKEY R3 CNB-3 KEY11 KEY15 KEY19 KEY23 DIGKEY R4 CNB-4 SCAN R1 CNB-5 SCAN R2 CNB-6 SCAN R3 Operation...
Page 154: Deck Main Pcb (42 Ppm: Optional/52 Ppm: Standard)
2A3/4 2-3-9 Deck main PCB (42 ppm: optional/52 ppm: standard) DECK TXD Main Engine Communication DECK RXD circuit Latch PFSW4 Deck paper conveying motor drive circuit Clutch drive circuit PDM1 PFCL2 PDM1 drive circuit LED drive PFCL1 circuit PDMSENS1 PDM2 PDM2 drive circuit PDMSENS2...
Page 155 2A3/4 ( 1 ) Paper deck motor drive circuits +24 V +24 V DC CN7-2 +5 V DC PDM1 CN7-1 +5 V DC IC8.4Y IC8.3Y AGROUND +5 V DC GROUND CN1-8 UPSW1 IC6.4 PDMPCB Figure 2-3-12 Paper deck motor 1 drive circuit The following is a description of the paper deck motor 1 drive circuit.
Page 156 2A3/4 ( 2 ) Clutch drive circuit +24 V DC COM1 COM2 CN4-1 CN4-6 PDMPCB Figure 2-3-13 Paper conveying clutch drive circuit When pin 19 of the CPU IC7 goes low, pin 2 of IC4 goes low, which turns the paper conveying clutch (CCL) on.
Page 157 2A3/4 (3) Operating principle of reflective photosensors PPSENS1, PPSENS2, PPSENS3 and PESENS Phototransistor +5 V DC IC5.3 IC9.4 PPSENS 3 I/FPCB PDMPCB Figure 2-3-14 Reflective photosensor (PPSENS3) circuit The following is the operating principle of paper path sensor 3 (PPSENS3). Paper path sensors 1 and 2 (PPSENS1, PPSENS2) and the paper empty sensor (PESENS) operate in the same manner.
Page 158 2A3/4 ( 4 ) Reset circuit +5 V DC +5 V DC +5 V DC R23 2 VREF GROUND GROUND Figure 2-3-15 Reset circuit 0.8 V DC Figure 2-3-16 CPU reset operation timing chart (abridged) IC1 monitors the supply voltage and also determines if the CPU IC7 is operating correctly.
Page 159 SET UP AND ADJUSTMENT SECTION 4230/5230 S/M (MCA)
Page 160 2A3/4 CONTENTS 3-1 Installation 3-1-1 Unpacking and installation ..............3-1-1 (1) Installation environment .............. 3-1-1 (2) Installation procedure ..............3-1-2 3-1-2 Setting initial copy modes ..............3-1-29 3-1-3 Installing the memory copy kit (42 ppm: optional/52 ppm: standard) ..........3-1-30 3-1-4 Installing the image memory SIMM (option) ........
Page 161: Unpacking And Installation
2A3/4 3-1-1 Unpacking and installation ( 1 ) Installation environment 1. Temperature: 10 - 35°C/50 - 95°F 2. Humidity: 15 - 18%RH 3. Power supply: 120 V AC, 10 A 220 - 240 V AC, 4.8 A 4. Power source frequency: 50 Hz ±0.3%/60 Hz ±0.3% 5.
Page 162 2A3/4 ( 2 ) Installation procedure Start Unpack. Remove the tapes. (42 ppm) Remove the tapes. (52 ppm) Remove pins holding light source units 1 and 2. Apply toner to the cleaning blade (maintenance item U160). Remove the developing unit. Release the cleaning blade.
Page 163 2A3/4 • 42 ppm Light source unit 1 pins Light source unit 2 pin Cleaning blade pin Copy tray* Drum Paper size label sheet Feed bottom protector* Figure 3-1-2-a *1: When neither the paper feed desk nor the large paper deck is installed. *2: For 220-240 V specifications only.
Page 164 2A3/4 • 52 ppm Light source unit 1 pins Light source unit 2 pin Cleaning blade pin Copy tray* Drum Paper size label sheet Figure 3-1-2-b * For 220-240 V specifications only. 3-1-4...
Page 165 2A3/4 Unpack. • 42 ppm 2345 ⁄ ¤ & Figure 3-1-3-a Unpacking 1 Copier 8 Right pad ^ Machine cover 2 Desk retainer 9 Left pad & Machine bottom cover 3 Paper size label sheet 0 Bottom pads * Hinge joint ×...
Page 166 2A3/4 • 52 ppm 2& Figure 3-1-3-b Unpacking 1 Copier 8 Inner frame % Top spacer 2 Paper size label sheet 9 Tray spacer ^ Upper case 3 Bottom pads 0 Machine cover & Business reply mail* 4 Outer case ! Hinge joint * Power cord* 5 Right pad...
Page 167 2A3/4 Remove the tapes. (42 ppm) 1. Remove the two tapes holding the front cover. 2. Remove the two tapes holding the duplex unit. 3. Remove the two tapes holding the drawers. 4. Remove the two tapes holding the right cover. 5.
Page 168 2A3/4 8. Remove the two tapes holding the feed bottom protector and then the protector. 9. Remove the two tapes holding the DF original reversing cover. 10. Remove the tape holding the paper ejection guide. 11. Remove the three tapes holding the pins for light source units 1 and 2. 12.
Page 169 2A3/4 13. Open the duplex unit and remove the two tapes holding the duplex cover. Duplex cover Duplex unit Figure 3-1-6 14. Open the drawers and remove the two tapes from each of them. Figure 3-1-7 3-1-9...
Page 170 2A3/4 15. Open the SRDF and remove the paper from the contact glass. 16. Remove the protective film from the edge of the contact glass. 17. Remove the tape holding the original detection switch. SRDF Protective film Paper Original detection switch Figure 3-1-8 3-1-10...
Page 171 2A3/4 Remove the tapes. (52 ppm) 1. Remove the tape holding the front cover. 2. Remove the two tapes holding the drawers. 3. Remove the tape holding the right cover. 4. Remove the tape holding the deck side cover. 5. Open the front cover and remove the three tapes holding the SRDF. 6.
Page 172 2A3/4 8. Remove the two tapes holding the DF original reversing cover. 9. Remove the tape holding the paper ejection guide. 10. Remove the three tapes holding the pins for light source units 1 and 2. 11. Remove the tape holding the left cover. DF original reversing cover Paper ejection guide Light source unit 1 pins...
Page 173 2A3/4 12. Open the front cover and then the duplex unit. Remove the two tapes holding the duplex cover. Duplex cover Duplex unit Figure 3-1-11 13. Open the drawers and remove the tape from each of them. Figure 3-1-12 3-1-13...
Page 174 2A3/4 14. Open the SRDF and remove the paper from the contact glass. 15. Remove the protective film from the edge of the contact glass. 16. Remove the tape holding the original detection switch. SRDF Protective film Paper Original detection switch Figure 3-1-13 3-1-14...
Page 175 2A3/4 Remove pins holding light source units 1 and 2. 1. Remove the two pins for light source unit 1 and the pin for light source unit 2. Light source unit 1 pins Light source unit 2 pin Figure 3-1-14 Remove the developing unit.
Page 176 2A3/4 3. While pressing the image formation unit release button, pull the image formation unit out. Image formation unit release button Image formation unit * Illustration shows a 42 ppm. Figure 3-1-16 4. Remove the two screws and open the image formation rail. Screw Image formation rail Screw...
Page 177 2A3/4 5. Detach the 1-pin connector of the developing unit and 4-pin connector of the toner sub-hopper. 6. Slide the joint toward the machine rear. While sliding the shutter toward the machine front, close the shutter. 7. Lift the toner sub-hopper slightly and turn it toward the machine right. Developing unit 4-pin connector Shutter...
Page 178: Gear
2A3/4 Load developer. 1. Remove the two screws and unlock the two hooks to remove the developing unit upper cover. Caution: Place the developing unit on a level surface when loading developer. Screws Hook Hook Developing unit upper cover Figure 3-1-20 2.
Page 179 2A3/4 Install the drum. 1. Remove the two screws and detach the main charger assembly. 2. Remove the two screws and open the upper cleaning cover. Screws Main charger assembly Screw Screw Upper cleaning cover Figure 3-1-22 3. Remove the screw from each of the front and rear drum retainers and then the retainers.
Page 180 2A3/4 4. Fit the front and rear drum retainers to the drum and install the drum to the image formation unit. 5. Secure each of the front and rear drum retainers using the screws removed in step 3. • When installing the drum, orient correctly with the thinner end of the drum flange shaft at the machine front and the thicker end at the machine rear.
Page 181 2A3/4 13. While pressing the image formation unit safety lock release plate, put the image formation unit back into the machine. Image formation unit safety lock release plate Image formation unit * Illustration shows a 42 ppm. Figure 3-1-25 14. Return the paper transfer section release lever to the original position to secure the paper conveying section.
Page 182 2A3/4 2. To adjust the fixing pressure, tighten the fixing pressure nuts on the front and rear of the fixing unit clockwise until each nut clamps the angle bracket against the locking nuts underneath. Locking nuts Fixing pressure nut Angle bracket Figure 3-1-27 Adjusting the fixing pressure 3.
Page 183 2A3/4 Connect the power cord. 1. Connect the power cord to the machine.* 2. Insert the power plug into the wall outlet. Carry out initial developer setting (maintenance item U130). 1. Turn the main switch on and enter the maintenance mode by entering “10871087”...
Page 184 2A3/4 Release the cleaning blade. 1. Open the front cover. 2. Turn the paper transfer section release lever to the right to unlock the paper conveying section. 3. While pressing the image formation unit release button, pull the image formation unit out.
Page 185 2A3/4 2. After the machine has stabilized, open the front cover. 3. Shift the toner cartridge release lever to the left. Toner cartridge release lever * Illustration shows a 42 ppm. Figure 3-1-30 4. Insert the toner cartridge by aligning the two arrows on the top of the toner cartridge with the two markings on the machine.
Page 186 2A3/4 Install the feed bottom protector (only for 42 ppm).* 1. Remove the screws from the right front lower cover B and right rear lower cover and then detach the covers. 2. Fit the feed bottom protector using two M4 x 6 TP screws. 3.
Page 187 2A3/4 Adjust the height adjusters.* 1. Turn the four height adjusters at the bottom of the machine so that the machine is level. Height adjuster Figure 3-1-33 *2: When the paper feed desk or the large paper deck is installed. Install the copy tray* and paper size label sheet.
Page 188 2A3/4 3. Slide the paper size label sheet into the front of drawer. Paper size label sheet Figure 3-1-35 4. If the user requests the side guides to be fixed, fix according to the paper size × using four M3 8 flat-head screws.
Page 189: Setting Initial Copy Modes
2A3/4 3-1-2 Setting initial copy modes Factory settings are as follows: Maintenance Contents Factory setting item No. U253 Switching between double and single counts Double count U254 Turning auto start function on/off U255 Setting auto clear time U256 Turning auto preheat/energy saver function on/off U258 Switching copy operation at toner...
Page 190: Installing The Memory Copy Kit
2A3/4 3-1-3 Installing the memory copy kit (42 ppm: option/52 ppm: standard) Memory copy kit installation requires the following parts: Memory copy kit (P/N 2AC82020) Contents of the kit • Memory copy PCB (assembly, P/N 2AC01120) × • Three (3) BVM4 6 bronze binding screws (P/N B1304060) <Procedure>...
Page 191 2A3/4 4. Insert the connector of the memory copy PCB into the connector of the main PCB. 5. Clip the memory copy PCB over the board support. Memory copy PCB Main PCB Board support Connector Connector Figure 3-1-38 × 6. Secure the memory copy PCB using the three BVM4 6 bronze binding screws.
Page 192 2A3/4 7. Insert the connector of the machine into the connector on the memory copy PCB. Memory copy PCB Connector Connector Figure 3-1-40 8. Refit all removed parts. 3-1-32...
Page 193: Installing The Image Memory Simm (Option)
2A3/4 3-1-4 Installing the image memory SIMM (option) Installation of add-on image memory to the memory copy PCB requires the following part: Image memory (16 MB or 32 MB 72-pin SIMM) <Procedure> 1. Detach the SRDF connector. 2. Remove the seven screws holding the rear cover and then the cover. 3.
Page 194 2A3/4 4. Remove the six screws holding the sequence cover and then the cover. Screws Sequence cover Screws Screws Figure 3-1-42 5. Fit an image memory into the add-on memory slot on the memory copy PCB. Memory copy PCB 2 Add-on memory slot Memory copy PCB 1 Image memory...
Page 195: Installing The Optical Heater (Service Part)
2A3/4 3-1-5 Installing the optical heater (service part) Optical heater installation requires the following parts: Optical heater (P/N 33960020): for 220 - 240 V specifications Optical heater (P/N 34860030): for 120 V specifications Heater switch (P/N 68427020) Dehumidifier relay cable (P/N 2AC60020) ×...
Page 196 2A3/4 10. Route the dehumidifier relay cable using the five wire saddles. 11. Insert the 2-pin connector of the optical heater into the 2-pin connector of the dehumidifier relay cable. 12. Insert the 2-pin connector of the main PCB into the 2-pin connector of the dehumidifier relay cable.
Page 197 2A3/4 14. Remove the two screws holding the lower left cover and then the cover. 15. Remove the cap in the lower left cover. 16. Refit the lower left cover using the two screws. 17. Insert the heater switch instead. 18.
Page 198: Installing The Drawer Heater (Service Part)
2A3/4 3-1-6 Installing the drawer heater (service part) Drawer heater installation requires the following parts: Drawer heater (P/N 33960020): for 220 - 240 V specifications Drawer heater (P/N 34860030): for 120 V specifications Heater switch (P/N 68427020) Dehumidifier relay cable (P/N 2AC60020) ×...
Page 199 2A3/4 7. Detach the SRDF connector. 8. Remove the seven screws holding the rear cover and then the cover. 9. Route the dehumidifier relay cable using the five wire saddles. 10. Insert 2-pin connector of the drawer heater into the 2-pin connector of the dehumidifier relay cable.
Page 200 2A3/4 13. Remove the two screws holding the lower left cover and then the cover. 14. Remove the cap in the lower left cover. 15. Refit the lower left cover using the two screws. 16. Insert the heater switch instead. 17.
Page 201: Installing The Key Counter (Option)
2A3/4 3-1-7 Installing the key counter (option) Key counter installation requires the following parts: Key counter set (P/N 66069781) Contents of the set: • Key counter cover (P/N 66060010) • Key counter retainer (P/N 66060030) • Key counter cover retainer (P/N 66060021) •...
Page 202 2A3/4 3. Remove the screw holding right front lower cover B and then the cover. 4. Remove the screw holding the right rear lower cover and then the cover. 5. Remove the two screws and detach the middle right cover from the machine. 6.
Page 203 2A3/4 7. Pass the 4-pin connector of the key counter through the apertures in the key counter cover retainer and middle right cover, and insert into the 4-pin connector inside the machine. 8. Seat the projection of the key counter cover retainer in the aperture in the middle right cover, and fasten them both to the machine using the two screws.
Page 204 2A3/4 3-1-8 Installing the dehumidifier heaters (service part) Dehumidifier heater installation requires the following parts: Two dehumidifier heaters (P/N 33960020): for 220 - 240 V specifications Two dehumidifier heaters (P/N 34860030): for 120 V specifications Two heater bases (P/N 54107410) Eight BVM4 x 06 bronze binding screws (P/N B1304060) Eight EDS-2 edgings (P/N M2104210) Relay wire (P/N 53310390)
Page 205 2A3/4 8. Fit the dehumidifier heater assemblies to the right and left of the large paper deck using two screws for each. Screws Screws Dehumidifier heater Dehumidifier heater assembly assembly Left Right Figure 3-1-55 9. Fit the edgings to the two U-shaped cutouts in the rear frame. 10.
Page 206 2A3/4 11. Detach the open connector from the connector of the main wire on the machine rear. Main wire Open connector Figure 3-1-57 12. Insert the dehumidifier heater connectors into the relay wire connectors (see A in Figure 3-1-58). 13. Insert the main wire connector into the relay wire connector (see B in Figure 3-1- 58).
Page 207 2A3/4 3-1-9 Installing the MMD host monitoring system device (optional for 120 V specifications only) <Procedure> 1. Remove the two screws holding the signal cable cover and then the cover. Signal cable cover Screws Figure 3-1-59 2. Pull the 10-pin connector out of the machine, remove the jumper and insert the connector into the 10-pin connector of the signal cable.
Page 208 2A3/4 3. Fit the MMD host monitoring system device to the rear cover using the two bronze binding tap-tight screws M3 × 16. 4. Insert the connector of the signal cable into the connector of the MMD host monitoring system device, and tighten the two screws on the signal cable. MMD host monitoring system device Screw...
Page 209: Maintenance Mode
2A3/4 CONTENTS 3-2 Maintenance Mode 3-2-1 Maintenance mode ................3-2-1 (1) Executing a maintenance item ............ 3-2-1 (2) Maintenance mode items list ............3-2-4 (3) Contents of maintenance mode items ......... 3-2-8 3-2-2 Copier management ................. 3-2-99 (1) Executing a copier management item ........3-2-99 (2) Department management ............
Page 210 2A3/4 3-2-1 Maintenance mode The copier is equipped with a maintenance function which can be used to maintain and service the machine. ( 1 ) Executing a maintenance item Start Enter 10871087. · · · · · · · Entering the maintenance mode Enter the number of the maintenance item to be executed using the ·...
Page 211 2A3/4 • Data setting Data is changed by pressing the Up/Down keys, and the new data is set by pressing the print key. In a maintenance item where multiple items can be changed, the item to be changed is selected by pressing on it on the touch panel. Correcting position of FOLIO U035 Metric...
Page 212 2A3/4 • Operation execution The specified operations and auto adjustments are performed by pressing the print key. In a maintenance item where multiple operations can be performed, the item to be executed is selected by pressing on it on the touch panel. Metric Drive motors and fans ON U030...
Page 213 2A3/4 ( 2 ) Maintenance mode item list Item Initial Section Maintenance item contents setting* General U000 Outputting an own-status report — U001 Exiting the maintenance mode — U002 Setting the factory default data — U003 Setting the service telephone number —...
Page 214 2A3/4 Item Initial Section Maintenance item contents setting* U065 Adjusting the scanner magnification Optical Main scanning direction/auxiliary scanning direction U066 Adjusting the scanner leading edge registration U067 Adjusting the scanner center line U070 Adjusting the DF magnification U071 Adjusting the DF scanning timing U072 Adjusting the DF center line U073...
Page 215 2A3/4 Item Initial Section Maintenance item contents setting* Developing U156 Changing the toner control level Toner feed start level Toner empty level U157 Checking/clearing the developing drive time — — U158 Checking/clearing the developing count — Fixing and U160 Applying toner to the cleaning blade cleaning 42ppm 52ppm U161...
Page 216 2A3/4 Item Initial Section Maintenance item contents setting* Mode U254 Turning auto start function on/off setting U255 Setting auto clear time U256 Turning auto preheat/energy saver function on/off U258 Switching copy operation at toner empty detection SINGLE MODE, 0 EJECT U260 Changing the copy count timing U263...
Page 217 2A3/4 ( 3 ) Contents of maintenance mode items Maintenance Description item No. U000 Outputting an own-status report Description Outputs lists of the current settings of the maintenance modes, and paper jam and service call occurrences. Purpose To check the current setting of the maintenance modes, or paper jam or service call occurrences.
Page 218 2A3/4 Maintenance Description item No. U001 Exiting the maintenance mode Description Exits the maintenance mode and return to the normal copy mode. Purpose To exit the maintenance mode. Method Press the print key. The normal copy mode is entered. U002 Setting the factory default data Description Restores the machine conditions to the factory default settings.
Page 219 2A3/4 Maintenance Description item No. U003 Setting the service telephone number Description Sets the telephone number to be displayed when a service call code is detected. Purpose To set the telephone number to call service when installing the machine. Method Press the print key.
Page 220 2A3/4 Maintenance Description item No. U004 Setting the machine number Description Displays and changes the machine number. Purpose To check or set the machine number. Method Press the print key. The currently set machine number is displayed. Setting 1 Enter the last six digits of the machine number using the numeric key. Do not enter the first two digits, 3 and 7.
Page 221 2A3/4 Maintenance Description item No. U005 Copying without paper Description Simulates the copy operation without paper feed. Purpose To check the overall operation of the machine. Method 1 Press the print key. The screen for selecting an item is displayed. 2 Select the item to be operated.
Page 222 2A3/4 Maintenance Description item No. U019 Displaying the ROM version Description Displays the part number of the ROM fitted to each PCB. Purpose To check the part number or to decide if the ROM version is new from the last digit of the number. Method 1 Press the print key.
Page 223 2A3/4 Maintenance Description item No. U021 Initializing memories Description Initializes the setting data other than that for adjustments due to variations between respective machines, i.e., settings for counters, service call code detection and modes. As a result, initializes the backup RAM according to the specifications depending on the destination selected in U252.
Page 224 2A3/4 Maintenance Description item No. U022 Initializing backup data Description Initializes only the data set for the optical section. Purpose To be executed after replacing the scanner unit. Method 1 Press the print key. The screen for executing is displayed. 2 Press SCANNER on the touch panel.
Page 225 2A3/4 Maintenance Description item No. U030 Checking motor operation Description Drives each motor. Purpose To check the operation of each motor. Method 1 Press the print key. The screen for selecting an item is displayed. 2 Select the motor to be operated. The selected item is displayed in reverse and the operation starts.
Page 226 2A3/4 Maintenance Description item No. U031 Checking switches for paper conveying Description Displays the on-off status of each paper detection switch on the paper path. Purpose To check if the switches for paper conveying operate correctly. Method 1 Press the print key. A list of the switches, the on-off status of which can be checked, are displayed.
Page 227 2A3/4 Maintenance Description item No. U032 Checking clutch operation Description Turns each clutch on. Purpose To check the operation of each clutch. Method 1 Press the print key. The screen for selecting an item is displayed. 2 Select the clutch to be operated. The selected item is displayed in reverse, and the clutch turns on for 1 s.
Page 228 2A3/4 Maintenance Description item No. U033 Checking solenoid operation Description Turns each solenoid on. Purpose To check the operation of each solenoid. Method 1 Press the print key. The screen for selecting an item is displayed. 2 Select the solenoid to be operated. The selected item is displayed in reverse, and the solenoid turns on for 1 s.
Page 229 2A3/4 Maintenance Description item No. U035 Setting folio size Description Changes the image area for copying onto folio size paper. Purpose To prevent the image at the trailing edge, or right or left side of the paper from not being copied by setting the actual size of the folio paper used. Method Press the print key.
Page 230 2A3/4 Maintenance Description item No. U051 Adjusting the amount of slack in the paper before registration Adjustment See page 3-3-22. U052 Adjusting the side margins for duplex copying Adjustment See page 3-3-88. U053 Performing fine adjustment of the motor speed Description Performs fine adjustment of the speeds of the drive motor and paper conveying motor.
Page 231 2A3/4 Maintenance Description item No. U053 Adjustment × 1 Output an A3/11" 17" VTC pattern in interrupt mode. 2 Measure A and B on the VTC pattern (Figure 3-2-3), and perform the following adjustments if they are different from the correct sizes: A: Drive motor adjustment B: Paper conveying motor adjustment Completion...
Page 232 2A3/4 Maintenance Description item No. U061 Turning the exposure lamp on Description Turns the exposure lamp on. Purpose To check the exposure lamp. Method 1 Press the print key. The screen for selecting an item is displayed. 2 Press the print key. The exposure lamp lights. 3 To turn the exposure lamp off, press the stop/clear key.
Page 233 2A3/4 Maintenance Description item No. U065 Adjusting the scanner magnification Adjustment See pages 3-3-36 and 37. U066 Adjusting the scanner leading edge registration Adjustment See page 3-3-39. U067 Adjusting the scanner center line Adjustment See page 3-3-38. U070 Adjusting the DF magnification Adjustment See page 3-3-96.
Page 234 2A3/4 Maintenance Description item No. U073 Checking scanner operation Description Simulates the scanner operation under arbitrary conditions. Purpose To check scanner operation. Method 1 Press the print key. The screen for selecting an item is displayed. 2 Select the item to be changed. The selected item is displayed in reverse.
Page 235 2A3/4 Maintenance Description item No. U080 Adjusting exposure in toner economy mode Description Adjusts the image density in the eco-print mode. Purpose To increase or decrease the image density in the eco-print mode. Method Press the print key. The screen for execution is displayed. Setting 1 Adjust the preset value using the Up/Down keys.
Page 236 2A3/4 Maintenance Description item No. U088 Setting the input filter (moiré reduction mode) Description Turns moiré reduction mode on and off by switching the input filter on and off. Purpose Used to prevent regular density unevenness (moiré) on halftone image areas of the copy image in text mode and text and photo mode.
Page 237 2A3/4 Maintenance Description item No. U089 Outputting a PG pattern Description Selects and outputs the PG pattern created in the copier. Purpose When performing respective image printing adjustments, used to check the machine status apart from that of the scanner with a non-scanned output PG pattern.
Page 238 2A3/4 Maintenance Description item No. 3 To change the output conditions for MONO-LEVEL, change the setting U089 using The Up/Down keys. Description Setting range Initial setting Output conditions 0 to 255 for MONO-LEVEL Increasing the setting makes the density higher, and decreasing it makes the density lower.
Page 239 2A3/4 Maintenance Description item No. U091 Checking shading Description Performs scanning under the same conditions as before and after shading is performed, displaying the original scanning values at nine points of the contact glass on the touch panel. Purpose To check the change in original scanning values before and after shading. The results may be used to decide the causes for fixing unevenness (uneven density) of the gray area of an image: either due to optical (shading or CCD) or other problems.
Page 240 2A3/4 Maintenance Description item No. Method U091 1 Press the print key. The screen for selecting an item is displayed. 2 Select the item to be operated. The selected item is displayed in reverse. Display Operation SHD BEFORE Performs scanning before shading and displays the result. SHD AFTER Performs scanning after shading and displays the result.
Page 241 2A3/4 2AD-1 Maintenance Description item No. U092 Adjusting the scanner automatically Description Makes auto scanner adjustments in the order below using the specified original. • Adjusting the scanner center line (U067) • Adjusting the scanner magnification in the main scanning direction (U065) •...
Page 242 2A3/4 Maintenance Description item No. U093 Setting the exposure density gradient Description Changes the exposure density gradient in manual density mode, depending on respective image modes (text, text and photo, photo). Purpose To set how the image density is altered by a change of one step in the manual density adjustment.
Page 243 2A3/4 Maintenance Description item No. 3 Press the print key. The value is set. U093 4 To return to the screen for selecting an item, press the stop/clear key. Interrupt copy mode While this maintenance item is being performed, copying from an original can be made in interrupt copy mode.
Page 244 2A3/4 Maintenance Description item No. Setting U099 1 Select an item to be set. Display Description LEVEL Detection sensor threshold value WAIT TIME Original size judgment time* ORIGINAL AREA Original size detection position display (mm) SIZE Detected original size display * Time from activation of the original detection switch (ODSW) to original size judgment Method to set the detection threshold value...
Page 245 2A3/4 Maintenance Description item No. U100 Setting the surface potential Description Changes the surface potential by changing the grid control voltage. Also performs main charging. Purpose To set the surface potential or check main charging. Also used when reentering data after replacing the backup RAM or initializing the set data. Start Press the print key.
Page 246 2A3/4 Maintenance Description item No. U101 Setting high voltages Description Changes the developing bias voltage, transfer voltage and separation voltage by changing the developing bias control voltage, transfer control voltage and separation control voltage. Also checks the transfer output voltage. Purpose To check and change high voltages other than the main charger voltage.
Page 247 2A3/4 Maintenance Description item No. Setting the transfer voltage U101 1 Change the setting using the Up/Down keys. Display Operation Setting range Initial setting TC DATA Transfer control voltage 0 to 255 Increasing the setting makes the transfer voltage higher, and decreasing it makes the voltage lower.
Page 248 2A3/4 Maintenance Description item No. U102 Setting the cleaning interval for the transfer charger Description Executes a cleaning operation for the transfer charger and changes the intervals at which the transfer charger is cleaned. Purpose To check the cleaning operation for the transfer charger. Also to change the intervals for the operation.
Page 249 2A3/4 Maintenance Description item No. U110 Checking/clearing the drum count Description Displays the drum counts for checking or clearing the figure, which is used as a reference when correcting the main charger potential output. Purpose To check the drum status. Also used to clear the count after replacing the drum during regular maintenance.
Page 250 2A3/4 Maintenance Description item No. U111 Checking/clearing the drum drive time Description Displays the drum drive time for checking or clearing a figure, which is used as a reference when correcting the high voltage based on time. Purpose To check the drum status. Also used to clear the drive time after replacing the drum.
Page 251 2A3/4 Maintenance Description item No. U130 Initial setting for the developer Description Automatically sets the toner sensor control voltage and toner feed start level for the installed developer. Purpose To set the initial settings for the developer when installing the machine or replacing the developer.
Page 252 2A3/4 Maintenance Description item No. U131 Setting the toner sensor control voltage Description Displays or changes the toner sensor control voltage automatically set in maintenance item U130. Purpose To check the automatically set toner sensor control voltage. Also to change the toner density if an image is too dark or light.
Page 253 2A3/4 Maintenance Description item No. U132 Replenishing toner forcibly Description Replenishes toner forcibly until the toner sensor output value reaches the toner feed start level. Purpose Used when the toner empty is detected frequently. Method 1 Press the print key. The screen for executing is displayed. 2 Press the print key.
Page 254 2A3/4 Maintenance Description item No. U133 Method 1 Press the print key. The screen for executing is displayed. 2 Press ON on the touch panel. The selected item is displayed in reverse. 3 Press the print key. The toner recycle motor turn on and recycled toner collection is performed for approximately 5 minutes.
Page 255 2A3/4 Maintenance Description item No. U136 Turning the toner level detection function on/off Description Turning the control based on the toner level sensor output on/off. Purpose To enable copying using the toner in the developing section after the toner level in the toner hopper decreases, by turning the control function off Method Press the print key.
Page 256 2A3/4 Maintenance Description item No. U155 Displaying the toner sensor output Description Displays the toner sensor output value , and related data. Purpose To check the toner sensor output value. Method 1 Press the print key. The screen for executing is displayed. 2 Press the print key.
Page 257 2A3/4 Maintenance Description item No. U156 Changing the toner control level Description Changes the toner feed start level set in maintenance item U130 or the toner empty level to be determined by the difference from the toner feed start level. Purpose To check the toner feed start level and toner empty level.
Page 258 2AD-1 2A3/4 Maintenance Description item No. U157 Checking/clearing the developing drive time Description Checks or clears the developing drive time, which is used as a reference when correcting the toner control. It is automatically cleared when U130 is executed. Purpose To check the developing drive time after replacing the developer.
Page 259 2A3/4 Maintenance Description item No. U160 Applying toner to the cleaning blade Description Applies toner to the cleaning blade. Purpose To apply toner to the drum to coat the cleaning blade. To be executed when replacing or cleaning the cleaning blade or the drum. Method 1 Press the print key.
Page 260 2A3/4 Maintenance Description item No. U161 Setting the fixing control temperature Description Changes the fixing control temperature. Purpose Normally no change is necessary. However, can be used to prevent curled or creased paper, or solve a fixing problem on thick paper. Also used to output a test pattern for measuring fixing pressure.
Page 261 2A3/4 Maintenance Description item No. U162 Stabilizing fixing forcibly Description Stops the stabilization fixing drive forcibly, regardless of fixing temperature. Purpose To forcibly stabilize the machine before the fixing section reaches stabilization temperature. Method 1 Press the print key. The screen for executing is displayed. 2 Press the print key.
Page 262 2A3/4 Maintenance Description item No. U198 Setting the fixing phase control Description Sets the use of fixing phase control to reduce electrical noise generated by the copier. Purpose Normally no change is necessary. If electrical noise generated by the copier causes flickering of the lights around the copier, select fixing phase control to reduces the noise.
Page 263 2A3/4 Maintenance Description item No. U201 Initializing the touch panel Description Automatically correct the positions of the X- and Y-axes of the touch panel. Purpose To automatically correct the display positions on the touch panel after it is replaced. Method 1 Press the print key.
Page 264 2A3/4 Maintenance Description item No. U202 Setting the MMD host monitoring system Description Initializes or operates the MMD host monitoring system* * Optional for 120 V specifications only. Purpose Used when setting up the machine or during regular maintenance or repair. Method 1 Press the print key.
Page 265 2A3/4 Maintenance Description item No. Stop/ Maintenance parts check/clear U202 clear key Select parts & push clear Ready to send DRUM 00000000 Push print key DEVELOPER 00000000 00000000 FIXING ROLLER Print key BLADE 00000000 Transmission start MAIN CHARGER 00000000 Clear Basic status screen Maintenance parts check/clear U202...
Page 266: Using Numeric Keys
2A3/4 Maintenance Description item No. Service report (leave) U202 Select a mode Preventive maintenance Repair PM & Repair Courtesy call Select an item. Ready to send Push print key Stop/ clear key Print key Transmission starts. Basic status screen Select an item and enter the digits U202 Phone number setting Set mode...
Page 267 2A3/4 Maintenance Description item No. Device initialization U202 Select a mode Standard Special by MODEL Stop/ Stop/ Retry initialization clear key clear key Special by Standard MODEL Device initialization U202 Device initialization U202 Select a mode Select a mode Model 000000 PPC ID 000000...
Page 268 2A3/4 Maintenance Description item No. 5 – 1 Ready to send xxxx Push print key (Reason for failure) Check Print key Check Initialization starts. MMD system Initialization problem? succeeded? Screen depending Initialization on the reason for failure successful Check Check Device initialization U202 Select a mode...
Page 269 2A3/4 Maintenance Description item No. U203 Operating DF separately Description Simulates the original conveying operation separately in the SRDF. Purpose To check the SRDF. Method 1 Press the print key. The screen for selecting an item is displayed. 2 Set the magnification to between 25 and 200% using the Up/Down keys.
Page 270 2A3/4 Maintenance Description item No. U204 Setting the presence or absence of a key card or key counter Description Sets the presence or absence of the optional key card or key counter. Purpose A key card is not available for metric specifications. The setting for the HECON key card, which is supported by inch-specification machines, is not necessary in this maintenance item.
Page 271 2A3/4 Maintenance Description item No. U206 Setting the presence or absence of the coin vender Description Sets the presence or absence of the optional coin vender. Also sets the details for coin vender operation, such as mode and unit price. This is an optional device which is currently supported only by Japanese specification machines, so no setting is necessary.
Page 272 2A3/4 Maintenance Description item No. U209 Setting date and time Description Sets the real time clock, which is used as a reference when correcting drum time. Purpose To set the date and time after initializing data. Method 1 Press the print key. The screen for executing is displayed. The current setting for the year is displayed.
Page 273 2A3/4 Maintenance Description item No. U243 Checking the operation of the DF motors, clutches and solenoids Description Turns the SRDF motors, clutches or solenoids on. Purpose To check the operation of the SRDF motors, clutches and solenoids. Method 1 Press the print key. The screen for selecting an item is displayed. 2 Select the item to be operated.
Page 274 2A3/4 Maintenance Description item No. U244 Checking the DF switches Description Displays the status of the respective switches on the SRDF. Purpose To check if respective switches on the SRDF operate correctly. Start 1 Press the print key. The screen for selecting an item is displayed. 2 Select the type of switches (SW or VR) to be checked.
Page 275 2A3/4 Maintenance Description item No. U244 Numerical Original width to be detected value × " " 49.664 50.176 61.440 61.952 × 103.936 " 14"/ × " 11" 104.448 Folio/A4R 139.264 139.776 146.432 B4/B5 146.994 197.120 × 197.632 11" 17"/ × ×...
Page 276 2A3/4 Maintenance Description item No. U245 Checking messages Description Displays a list of messages on the touch panel of the operation panel. Purpose To check the messages to be displayed. Method 1 Press the print key. 2 Change the screen using the Up/Down keys to display each message one at a time.
Page 277 2A3/4 Maintenance Description item No. • Upper and lower drawers of the paper feed desk U247 Display Motors and clutches Operation DESK MOT Desk drive motor (DDM) On for 5 s FEED CL Desk feed clutch (DFCL) On for 1 s UPP CL Upper desk paper feed clutch (DPFCL-U) On for 1s...
Page 278 2A3/4 Maintenance Description item No. Start U248 Press the print key. The screen for selecting an item is displayed. Display Description PUNCH TIMING Adjustment of the amount of slack in the paper in punch mode PUNCH LIMIT Punch limit/punch-hole scrap count SADDLE ADJUST Booklet stapling position adjustment Setting the amount of slack in the paper...
Page 279 2A3/4 Maintenance Description item No. Setting the booklet stapling position U248 1 Select SADDLE ADJUST on the screen for selecting an item. 2 Select the size to be set. 3 Adjust the preset value using the Up/Down keys. Display Description Setting range Initial Chang in value...
Page 280 2AD-1 2A3/4 Maintenance Description item No. U250 Setting the maintenance cycle Description Displays and changes the maintenance cycle. Purpose To check and change the maintenance cycle. Method Press the print key. The current setting is displayed as follows: × Maintenance cycle (number of copies) = setting 1000 Setting 1 Change the setting using the Up/Down keys.
Page 281 2A3/4 Maintenance Description item No. U252 Setting the destination Description Switches the operations and screens of machines according to the respective destinations. Purpose To be executed after replacing the backup RAM on the main PCB or initializing the backup RAM by running maintenance item U020, in order to return the setting to the value before replacement or initialization.
Page 282 2A3/4 Maintenance Description item No. U253 Switching between double and single counts Description Switches the count system for the total count and other counts. Purpose According to user (copy service provider) request, select if A3/11" x 17" paper is to be counted as one sheet (single count) or two sheets (double count).
Page 283 2A3/4 Maintenance Description item No. U254 Turning auto start function on/off Description Selects if the auto start function is turned on. Purpose Normally no change is necessary. If incorrect operation occurs, turn the function off: this may solve the problem. Method Press the start key.
Page 284 2A3/4 Maintenance Description item No. U255 Setting auto clear time Description Sets the time to return to initial settings after copying is complete. Purpose To be set according to frequency of use. Set to a comparatively long time for continuous copying at the same settings, and a comparatively short time for frequent copying at various settings.
Page 285 2A3/4 Maintenance Description item No. U256 Turning auto preheat/energy saver function on/off Description Selects if the auto preheat/energy saver function is turned on. When set to ON, the time to enter preheat/energy saver mode can be changed in copy management mode. Purpose According to user request, to set the preheat time to save energy, or enable copying promptly without the recovery time from preheat mode.
Page 286 2A3/4 Maintenance Description item No. U258 Switching copy operation at toner empty detection Description Selects if continuous copying is enabled after toner empty is detected, and sets the number of copies that can be made after the detection. Method Press the print key. The current setting is displayed. Setting 1 Select single or continuous copying.
Page 287 2A3/4 Maintenance Description item No. U260 Changing the copy count timing Description Changes the copy count timing for the total counter and other counters. Purpose To be set according to user (copy service provider) request. If a paper jam occurs frequently in the finisher when the number of copies is counted at the time of paper ejection, copies are provided without copy counts.
Page 288 2A3/4 Maintenance Description item No. U263 Setting DF copy ejection orientation Description Sets the copy paper ejection orientation in DF copying. Purpose To set face up ejection to eject the same order as the originals when using special papers such as tracing paper and film as copy medium. Method Press the print key.
Page 289 2A3/4 Maintenance Description item No. U264 Setting date display order Description Sets the order of year, month, and day for output on a list and the like. Purpose Selects the order according to user request. Method Press the print key. The screen for selecting an item is displayed. Setting 1 Select the order of display.
Page 290 2A3/4 Maintenance Description item No. U330 Sets the number of copies for switching the copy eject tray in the finisher (F-4130) Description Sets the number of copies at which the copy eject tray will switch from the sub tray to the main tray. Purpose Selects the value according to user request.
Page 291 2A3/4 Maintenance Description item No. U333 Setting the number of digits of ID-code Description Sets the number of digits of ID-code. Purpose Sets the number of digits according to user request. Method Press the print key. The screen for selecting an item is displayed. Setting 1 Select the number of digits.
Page 292 2A3/4 Maintenance Description item No. U334 Setting the ejection method in the booklet stitcher (F-4220) Description Sets whether or not the eject bin in use is switched to the other bin when the bin in use in the booklet stitcher overflows. Purpose Sets the value to 1 BIN to use one bin only for copying and the other bin only for printing.
Page 293 2A3/4 Maintenance Description item No. U343 Switching between duplex/simplex copy mode Description Switches the initial setting between duplex and simplex copy. Purpose To be set according to frequency of use: set to the more frequently used mode. Method Press the start key. The screen for selecting an item is displayed. Setting 1 Select ON or OFF.
Page 294 2A3/4 Maintenance Description item No. U344 Setting preheat/energy saver mode Description Changes the control mode for preheat/energy saver, and sets the silent mode (low noise mode). Purpose According to user request, selects which has priority, recovery time from preheat or energy saving. Also sets polygon motor noise elimination in preheat.
Page 295 2A3/4 Maintenance Description item No. U345 Setting the value for maintenance due indication Description Sets when to display a message notifying that the time for maintenance is about to be reached, by setting the number of copies that can be made before the current maintenance cycle ends.
Page 296 2A3/4 Maintenance Description item No. U347 Setting auto drawer size detection Description Turning the auto drawer size detection function on/off. Purpose To be used when turning the auto paper size (in the drawers) detection off and making copies onto only the specified size paper. Method Press the print key.
Page 297 2A3/4 Maintenance Description item No. U348 Setting the copy density adjustment range Description Selects the adjustment range for copy density from NORMAL and SPECIAL AREA (for wider range). Purpose To change the setting according to user request. When especially dark or light density is requested, set to SPECIAL AREA. Method Press the print key.
Page 298 2A3/4 Maintenance Description item No. U350 Setting the ID-code error output Description Sets whether or not an error report is output when an ID-code error occurs. Purpose According to user request, changes the setting. Method Press the print key. The screen for selecting an item is displayed. Setting 1 Select ON or OFF.
Page 299 2A3/4 Maintenance Description item No. U901 Checking/clearing copy counts by paper feed locations Description Displays or clears copy counts by paper feed locations. Purpose To check the time to replace consumable parts. Also to clear the counts after replacing the consumable parts. Method 1 Press the print key.
Page 300 2A3/4 Maintenance Description item No. U903 Checking/clearing the paper jam counts Description Displays or clears the jam counts by jam locations. Purpose To check the paper jam status. Also to clear the jam counts after replacing consumable parts. Method 1 Press the print key. The jam count is displayed by jam codes. 2 Change the screen using the Up/Down keys.
Page 301 2A3/4 Maintenance Description item No. U904 Checking/clearing the service call counts Description Displays or clears the service call code counts by types. Purpose To check the service call code status by types. Also to clear the service call code counts after replacing consumable parts. Method 1 Press the print key.
Page 302 2A3/4 Maintenance Description item No. U905 Checking/clearing counts by optional devices Description Displays or clears the counts by optional devices. Purpose To check the use of the SRDF, finisher and booklet siticher. Also to clear the counts after replacing consumable parts. Method 1 Press the print key.
Page 303 2A3/4 Maintenance Description item No. U906 Resetting partial operation control Description Resets the service call code for partial operation control. Purpose To be reset after partial operation is performed due to problems in the drawers or other sections below, and the related parts are serviced. The following sections can be the subject of the partial operation: SRDF Large paper deck...
Page 304 2A3/4 Maintenance Description item No. U907 Checking and resetting the count value on each ejection location Description Displays and resets the count value of ejected sheets on each ejection location. Purpose Checks the replacement period for maintenance parts. Also resets the count value after replacing the maintenance parts.
Page 305 2A3/4 Maintenance Description item No. U908 Checking the count value of the electronic counter Description Displays the count value of the electronic counter. Purpose Checks the value for maintenance work. Method Press the print key. * The count value of the total counter is displayed. Display Description COUNT...
Page 306 2A3/4 Maintenance Description item No. U990 Checking/clearing the time for the exposure lamp to light Description Displays, clears or changes the accumulated time for the exposure lamp to light. Purpose To check duration of use of the exposure lamp. Also to clear the accumulated time for the lamp after replacement.
Page 307 2A3/4 Maintenance Description item No. U992 Checking/clearing the printer count Description Displays, clears or changes the print count of the printer when the optional printer unit is installed. Purpose To check the frequency of use of the printer. Method Press the print key. The printer count is displayed. Clearing 1 Press CLEAR on the touch panel.
Page 308: Assembly And Disassembly
2A3/4 CONTENTS 3-3 Assembly and Disassembly 3-3-1 Precautions for assembly and disassembly ........3-3-1 (1) Precautions ................. 3-3-1 (2) Running a maintenance item ............3-3-2 3-3-2 Paper feed section ................3-3-3 (1) Detaching and refitting the forwarding, upper paper feed and lower paper feed pulleys .............
Page 309 2A3/4 3-3-6 Developing section ................3-3-51 (1) Replacing the developing unit upper seal ......... 3-3-51 (2) Adjusting the position of the magnetic brush (developing roller) (reference) ................. 3-3-52 (3) Adjusting the position of the doctor blade (reference) ....3-3-53 (4) Replacing the developing duct filter .......... 3-3-55 3-3-7 Transfer and separation section ............
Page 310: Precautions For Assembly And Disassembly
2A3/4 3-3-1 Precautions for assembly and disassembly ( 1 ) Precautions • Be sure to turn the main switch off and disconnect the power plug before starting disassembly. • When handling PCBs, do not touch connectors with bare hands or damage the board.
Page 311 2A3/4 ( 2 ) Running a maintenance item Start Enter "10871087" using Maintenance mode is entered. the numeric keys. Enter the maintenance item number using the numeric keys The maintenance item is or Up/Down keys. selected. Press the print key. The selected maintenance item is run.
Page 312: Paper Feed Section
2A3/4 3-3-2 Paper feed section ( 1 ) Detaching and refitting the forwarding, upper paper feed and lower paper feed pulleys Replace the forwarding, upper and lower paper feed pulleys as follows. <Procedure> Removing the primary paper feed unit 1. Remove right front lower covers B and A and the right rear lower cover. 2.
Page 313 2A3/4 Removing the forwarding pulley 5. Raise the forwarding pulley retainer in the direction the arrows, and remove it from the primary paper feed unit. Forwarding pulley retainer Figure 3-3-2 Detaching the forwarding pulley retainer 3-3-4...
Page 314 2A3/4 6. Remove the stop ring, pull the forwarding pulley shaft in the direction of the arrow, and remove the forwarding pulley. Stop ring Forwarding pulley shaft Forwarding pulley Figure 3-3-3 Detaching the forwarding pulley Removing the upper paper feed pulley 7.
Page 315 2A3/4 Removing the lower paper feed pulley 10. Remove the stop ring on the rear of the primary paper feed unit. 11. Pull the lower paper feed shaft to the rear (see the arrow shown below). Lower paper feed shaft Stop ring Figure 3-3-5 12.
Page 316 2A3/4 13. Replace the forwarding pulley and upper and lower paper feed pulleys. 14. Refit all removed parts. Caution: • When fitting the forwarding pulley, orient it correctly as shown in Figure 3-3-7. Machine front Machine rear Forwarding pulley Figure 3-3-7 •...
Page 317 2A3/4 ( 2 ) Detaching and refitting the bypass forwarding, upper and lower paper feed pulleys Replace the bypass forwarding, upper and lower paper feed pulleys as follows. <Procedure> Removing the bypass paper feed unit 1. Open the right cover and bypass table, and remove right front lower cover B, the right rear lower cover and middle right cover.
Page 318 2A3/4 3. Remove the connector and four screws holding the bypass paper feed unit, and then the unit. Bypass paper feed unit Connector Screws Screws Figure 3-3-9 Detaching the bypass paper feed unit Removing the bypass forwarding pulley 4. Remove the stop ring at the front of the bypass forwarding pulley retainer. 5.
Page 319 2A3/4 Remove the bypass uppedr paper feed pulley. 6. Remove the spring from the bypass forwarding pulley retainer. 7. Remove the stop ring. 8. Move the bushing in the direction of arrow A and remove it from the bypass forwarding pulley retainer. 9.
Page 320: Gear
2A3/4 10. Remove the stop ring, gear, spring pin and bushing. 11. Slightly move the bypass paper feed shaft in the direction of the arrow and remove the shaft from the bypass front frame. Bypass front frame Spring pin Stop ring Bypass paper feed shaft Bushing Gear...
Page 321: Pulley
2A3/4 12. Remove the bushing and the bypass upper paper feed pulley from the bypass paper feed shaft. Bypass upper paper feed pulley Bushing Bypass paper feed shaft Figure 3-3-13 Detaching the bypass upper paper feed pulley Removing the bypass lower paper feed pulley 13.
Page 322 2A3/4 14. Remove the stop ring and pull the joint shaft in the direction of the arrow. Stop ring Joint shaft Bypass separation retainer Figure 3-3-15 Detaching the bypass lower paper feed pulley (1) 15. Remove the stop ring and then the bypass lower paper feed pulley. Bypass lower paper feed pulley Stop ring Figure 3-3-16 Detaching the bypass lower paper feed pulley (2)
Page 323 2A3/4 ( 3 ) Replacing the upper and lower paper width switches (Inch models only) Replace the upper and lower paper width switches as follows. Caution: After replacing a paper width switch, be sure to perform (5) Adjusting the position of the rack adjuster. <Procedure>...
Page 324 2A3/4 7. Remove the two screws from the back of the rack adjuster and then the paper width switch. Screws Paper width switch Figure 3-3-19 Detaching the paper width switch 8. Apply the specified grease to the printed surface of the new paper width switch (shaded area in the diagram) and fit the switch to the rack adjuster.
Page 325 2A3/4 ( 4 ) Replacing the upper and lower registration cleaner assemblies Replace the upper and lower registration cleaner assemblies as follows. <Procedure> Detaching the upper registration cleaner assembly 1. Open the front cover and pull the image formation unit out. 2.
Page 326 2A3/4 ( 5 ) Adjusting the position of the rack adjuster Perform the following adjustment if there is a regular error between the centers of the original and the copy image on paper fed from the drawer. <Procedure> Start Original Copy Copy Make a test copy at 100%.
Page 327 2A3/4 ( 6 ) Adjustment after roller and clutch replacement Perform the following adjustment after refitting rollers and clutches. (6-1) Adjusting the leading edge registration Make the following adjustment if there is a regular error between the leading edges of the copy image and original.
Page 328 2A3/4 (6-2) Adjusting the center line of image printing Make the following adjustment if there is a regular error between the center lines of the copy image and original when paper is fed from the drawer. U 402 U067 U403 U072 U404 U034...
Page 329 2A3/4 (6-3) Adjusting the margins for printing Make the following adjustment if the margins are not correct. U 403 U404 U402 (P.3-3-40) (P.3-3-100) Caution: Check the copy image after the adjustment. If the margins are still incorrect, perform the above adjustments in maintenance mode. <Procedure>...
Page 330 2A3/4 Proceed to another mode? Press the stop/clear key. Exit maintenance mode. Printer leading edge margin (3±1.0mm) Ejection direction (reference) Printer Printer left margin right margin (2±0.5mm) (2±0.5mm) Printer trailing edge margin Printer trailing edge margin (3±1.0mm) for duplex copying (3±1.0mm) Normal copy mode Duplex copy mode ×...
Page 331 2A3/4 (6-4) Adjusting the amount of slack in the paper at the registration roller for drawer, bypass and duplex feeds Make the following adjustment if the leading edge of the copy image is missing or varies randomly, or if the copy paper is Z-folded. <Procedure>...
Page 332: Optical Section
2A3/4 3-3-3 Optical section ( 1 ) Detaching and refitting the exposure lamp Clean or replace the exposure lamp as follows. <Procedure> 1. Open the SRDF. 2. Remove the two screws holding the upper right cover and then the cover. 3.
Page 333 2A3/4 ( 2 ) Detaching and refitting the scanner wires Take the following procedure when the scanner wires are broken or to be replaced. • After replacing the scanner wires, proceed to (5) Adjusting scanner image lateral squareness (reference). (2-1) Detaching the scanner wires <Procedure>...
Page 334 2A3/4 13. Detach the round terminal of the scanner wire from the scanner wire spring on the left side of the scanner unit. 14. Remove the scanner wire. Scanner unit Round terminal Scanner wire spring Figure 3-3-30 Detaching the scanner wire (2-2) Refitting the scanner wires Caution: When fitting the wires, be sure to use those specified below.
Page 335 2A3/4 6. Wind the scanner wire around the scanner wire drum four turns from the rear toward the hole in the drum. 7. Insert the locating ball on the scanner wire into the hole in the scanner wire drum. 8. Wind the scanner wire a further five turns from the locating ball toward the machine front.
Page 336 2A3/4 17. Loosen the two screws securing the mirror 2 frame. 18. Insert the mirror 1 lower frame into the scanner unit and seat it on the positioning holes. 19. Insert the two frame securing tools into the positioning holes in the front and rear of the scanner unit and determine the positions of the mirror 1 lower frame and mirror 2 frame.
Page 337 2A3/4 ( 3 ) Replacing the laser scanner unit Take the following procedure when the laser scanner unit is to be checked or replaced. Caution: After replacing the laser scanner unit, proceed to (5) Adjusting scanner image lateral squareness (reference). <Procedure>...
Page 338 2A3/4 14. Detach the three connectors. 15. Remove the two screws holding the LSU adjuster mount and then the mount. 16. Remove the three pins and replace the laser scanner unit. 17. Refit all removed parts. Caution: When fitting the scanner unit, fit from directly above the machine to prevent deformation of the grounding point.
Page 339 2A3/4 ( 4 ) Replacing the ISU (reference) Take the following procedure when the ISU is to be checked or replaced. Caution: After fitting the ISU, proceed to (5-2) Adjusting the position of the ISU. <Procedure> 1. Remove the upper right cover. 2.
Page 340 2A3/4 • Securing the ISU <ISU installation requires the following tools:> Two (2) positioning pins (P/N 18568120) <Procedure> 1. Secure the ISU using the two positioning pins. 2. Refit the four screws. 3. Remove the two positioning pins. Screws Positioning pin Screws Positioning pin Figure 3-3-37 Installing the ISU...
Page 341 2A3/4 ( 5 ) Adjusting the longitudinal squareness (reference) Perform the following adjustment if the copy image is longitudinally skewed (longitudinal squareness is not obtained). Caution: • Before making the following adjustment, output a 1 DOT-LINE PG pattern in maintenance item U089 to use as the original for the adjustment. •...
Page 342 2A3/4 ( 6 ) Adjusting scanner image lateral squareness (reference) Perform the following adjustment if the copy image is laterally skewed (lateral squareness not obtained). Caution: • Before making the following adjustment, open the front cover and remove the operation unit lower cover. •...
Page 343 2A3/4 Pin holes Laser scanner unit LSU adjustment shaft Adjustment access hole in the machine front Figure 3-3-41 Adjusting the position of the laser scanner unit 3-3-34...
Page 344 2A3/4 (5-2) Adjusting the position of the ISU Caution: • Before making the following adjustment, output a 1 DOT-LINE PG pattern in maintenance item U089 to use as the original for the adjustment. • Adjust the pin at the machine front only and never touch the one at the machine rear.
Page 345 2A3/4 ( 7 ) Adjusting magnification of the scanner in the main scanning direction Perform the following adjustment if the magnification in the main scanning direction is not correct. U 066 U403 U065 (P.3-3-39) (P.3-3-40) Caution: Check the copy image after the adjustment. If the image is still incorrect, perform the above adjustments in maintenance mode.
Page 346 2A3/4 ( 8 ) Adjusting magnification of the scanner in the auxiliary scanning direction Perform the following adjustment if the magnification in the auxiliary scanning direction is not correct. U053 U034 U402 U066 U065 (P.3-2-20) (P.3-3-18) (P.3-3-20) (P.3-3-39) U403 U070 U071 U404 (P.3-3-40)
Page 347 2A3/4 ( 9 ) Adjusting the scanner center line Perform the following adjustment if there is a regular error between the center lines of the copy image and original. U034 U 402 U403 U072 U404 U067 (P.3-3-19) (P.3-3-20) (P.3-3-40) (P.3-3-97) (P.3-3-100) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode.
Page 348 2A3/4 (10) Adjusting the scanner leading edge registration Perform the following adjustment if there is regular error between the leading edges of the copy image and original. U034 U 402 U403 U071 U404 U066 (P.3-3-18) (P.3-3-20) (P.3-3-40) (P.3-3-98) (P.3-3-100) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode.
Page 349 2A3/4 (11) Adjusting the margins for scanning an original on the contact glass Perform the following adjustment if the margins are not correct. U402 U404 U403 (P.3-3-20) (P.3-3-99) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode. <Procedure>...
Page 350 2A3/4 Proceed to another mode? Press the stop/clear key. Exit maintenance mode. Scannerleading edge margin(3±1.0mm) Scanner Scanner left margin right margin (2±1.0mm) (2±1.0mm) Original Scanner trailing edge margin (3±1.0mm) Figure 3-3-48 3-3-41...
Page 351: Main Charging Section
2A3/4 3-3-4 Main charging section ( 1 ) Replacing the charger wire and main charger grid Take the following procedure when the charger wire is broken or to be replaced. <Precautions> • Use the specified tungsten wire for the charger wire. •...
Page 352 2A3/4 3. Remove the screw holding the grid tension plate and then the plate and main charger grid. 4. Remove the main charger front and rear lids. 5. Remove the charger spring from the charger wire retainer pin and charger terminal, and then the charger wire.
Page 353 2A3/4 Charger terminal Charger spring Projection Charger wire retainer pin Not more than 2 mm 13 ± 2 mm Charger terminal Projection Not more than 2 mm Charger spring Charger wire retainer pin Main charger front housing Main charger rear housing Figure 3-3-51 Installing the charger wire 6.
Page 354: Drum Section
2A3/4 3-3-5 Drum section ( 1 ) Replacing the drum. Replace the drum as follows. <Precautions> • Avoid direct sunlight and strong light when detaching and refitting the drum. • Hold the drum at the ends and never touch the drum surface. •...
Page 355 2A3/4 3. Remove the two screws holding the main charger assembly and then the assembly. Screws Main charger assembly Figure 3-3-53 Detaching the main charger assembly 4. Loosen the cleaning blade pin. Move the cleaning blade lever in the direction of the arrow so that the cleaning blade is kept away from the drum and then tighten the cleaning blade pin.
Page 356 2A3/4 7. Detach the 1-pin and 4-pin connectors. 8. While raising the toner sub-hopper slightly, slide the hopper toward the front of the image formation unit and turn the image formation unit to the right. Toner sub-hopper 4-pin connector 1-pin connector Figure 3-3-55 9.
Page 357 2A3/4 11. Remove the drum front and rear retainers from the drum. Replace the drum. Drum rear retainer Drum front retainer Drum Figure 3-3-57 Detaching the drum front and rear retainers 3-3-48...
Page 358 2A3/4 12. Refit all removed parts. Important: ∗ After replacing the drum, run maintenance items U110 "Checking/clearing the drum count" and U111 "Checking/clearing the drum drive time." ∗ After running maintenance item U160, loosen the blade pin and position the cleaning blade against the drum.
Page 359 2A3/4 ( 2 ) Cleaning the drum Clean the drum as follows when an image problems occur or if the drum is dirty. <Precautions> • Avoid direct sunlight and strong light when cleaning the drum. • Dust in the air and from the cleaning pad may damage the drum during operation. Avoid working in dusty places.
Page 360: Developing Section
2A3/4 3-3-6 Developing section ( 1 ) Replacing the developing unit upper seal Take the following procedure when the developing unit upper seal is soiled. <Procedure> 1. Draw the image formation unit out and remove the developing unit. 2. Remove the two screws holding the developing unit upper seal and then the seal. 3.
Page 361 2A3/4 ( 2 ) Adjusting the position of the magnetic brush (developing roller) (reference) Perform the following adjustment if the image is abnormally dark or light. • Before starting this adjustment, ensure that the doctor blade is installed correctly and that the correct amount of developer is present.
Page 362 2A3/4 ( 3 ) Adjusting the position of the doctor blade (reference) Perform the following adjustment if carrier or background appears on the copy image. <Procedure> 1. Remove the two screws holding the developing unit upper seal, and then the seal. ∗...
Page 363 2A3/4 3. Measure the distance between the developing roller and the doctor blade with a thickness gauge as shown in Figure 3-3-64, and adjust the doctor blade until the correct distances are obtained at the center and ends of the developing unit housing;...
Page 364 2A3/4 ( 4 ) Replacing the developing duct filter Replace the developing duct filter as follows. <Procedure> 1. Open the front cover. 2. Slide off the developing duct cover downward. 3. Replace the developing duct filter. Caution: When fitting the developing duct filter, ensure that the harder side of the filter faces the fan.
Page 365: Transfer And Separation Section
2A3/4 3-3-7 Transfer and separation section ( 1 ) Replacing the charger wires and cleaning pads Take the following steps when the charger wire is broken or is to be replaced, or when replacing the cleaning pads. <Precautions> • Use only the specified tungsten wire for the charger wire. •...
Page 366 2A3/4 3. Remove the transfer charger front and rear lids. 4. Remove the separation guide. 5. Replace the transfer charger cleaning pad and separation charger cleaning pad. 6. Remove the charger wire retainer pins, charger springs and then the charger wires. Transfer charger rear lid Separation guide Transfer charger...
Page 367 2A3/4 7. Wind one end of the new wire at lease five turns around the end of the charger spring. 8. Hook the other end of the charger spring onto the catch on the transfer charger terminal on the rear of the transfer charger housing. 9.
Page 368: Cleaning Section
2A3/4 3-3-8 Cleaning section ( 1 ) Detaching and refitting the cleaning blade Check or replace the cleaning blade as follows. <Procedure> 1. Draw the image formation unit out. 2. Remove the developing unit, main charger assembly and drum. 3. Remove the pin holding the cleaning blade and then the blade. 4.
Page 369 2A3/4 5. Refit all removed parts. ∗ When installing the cleaning blade, take care not to trap the sponges at both ends. ∗ After replacing the cleaning blade, move it away from the drum and run maintenance item U160 (see page 3-2-50). Cleaning blade Sponge Sponge...
Page 370 2A3/4 ( 2 ) Detaching and refitting the cleaning brush Clean or replace the cleaning brush as follows. <Procedure> 1. Remove the developing unit, main charger assembly and drum. 2. Remove the cleaning spring. Cleaning spring Figure 3-3-71 3. Shift the thrust spring toward the machine rear and detach the cleaning blade shaft. Cleaning blade shaft Thrust spring Cleaning blade shaft...
Page 371: Gear
2A3/4 4. Detach the 2-pin connector and remove the cleaning unit from the image formation unit. 5. Remove the E-rings, bushings and gear from both ends of the cleaning brush. 6. Clean or replace the cleaning brush. 7. Refit all removed parts. ∗...
Page 372 2A3/4 ( 3 ) Detaching and refitting the drum separation claw assembly and cleaning lower seal assembly. Clean or replace the drum separation claw assembly and cleaning lower seal assembly as follows. <Procedure> 1. Remove the developing unit, main charger assembly and drum. 2.
Page 373: Fixing Section
2A3/4 3-3-9 Fixing section ( 1 ) Detaching and refitting fixing heaters M and S Replace fixing heaters M and S as follows. <Procedure> 1. While raising the fixing unit release lever, draw the fixing unit out of the machine. 2.
Page 374 2A3/4 3. Open the fixing unit cover in the direction of the arrow. 4. Remove the two screws holding the fixing unit front cover and then the cover. 5. Remove the screw and two pins holding the fixing unit upper cover, and then the cover.
Page 375 2A3/4 6. Detach the fixing heater wire and the fixing unit wire from the fixing unit thermostat. Fixing unit wire Fixing heater wire Fixing unit thermostat Figure 3-3-77 7. Detach the two connectors on the fixing heater wire on the rear of the fixing unit. Connector (white) Connector (red) Figure 3-3-78...
Page 376 2A3/4 8. Remove the screw holding the fixing heater front retainer and then the retainer. 9. Pull fixing heaters M and S out from the front of the fixing unit. Fixing heater front retainer Screw Fixing heater M Fixing heater S Figure 3-3-79 Detaching fixing heaters M and S 10.
Page 377 2A3/4 ( 2 ) Detaching and refitting the fixing unit thermistor Replace the fixing unit thermistor as follows. <Procedure> 1. Detach the connector. 2. Remove the screw holding the fixing unit thermistor and then the thermistor. Connector Fixing unit thermistor Screw Figure 3-3-80 Detaching the fixing unit thermistor 3-3-68...
Page 378 2A3/4 3. Replace the thermistor. ∗ When fitting the fixing unit thermistor, pass the projection on the thermistor through the hole in the fixing unit thermistor film and then insert into the cutout in the fixing unit stay. Fixing unit thermistor Projection Fixing unit stay Cutout...
Page 379 2A3/4 ( 3 ) Detaching and refitting the fixing unit thermostats Replace the fixing unit thermostats as follows. Caution: Use the specified thermostat for replacement. Do not substitute a simple wire or similar; otherwise, the machine will be seriously damaged. <Procedure>...
Page 380 2A3/4 ( 4 ) Replacing the press roller Replace the press roller as follows. <Procedure> 1. Remove the two screws and open the fixing unit stay in the direction of the arrow. Fixing unit stay Screw Screw Figure 3-3-83 Detaching the fixing unit stay 3-3-71...
Page 381 2A3/4 2. Remove the press roller. Press roller Figure 3-3-84 Detaching the press roller 3. Remove the E-ring on either the front or rear end of the press roller and pull out the press roller shaft. E-ring E-ring Press roller shaft Figure 3-3-85 Detaching the press roller shaft 4.
Page 382 2A3/4 ( 5 ) Replacing the heat roller Replace the heat roller as follows. <Procedure> 1. Remove fixing heaters M and S (see page 3-3-64). 2. Open the fixing unit stay (see page 3-3-71). 3. Loosen the screw holding each of the fixing unit front and rear frames and move the heat roller stopper in the direction of the arrow.
Page 383 2A3/4 5. Remove the circlip, bearing and bushing from the front end of the heat roller. 6. Remove the circlip, gear, bearing and bushing from the rear end of the heat roller. 7. Replace the heat roller. Circlip Bearing Gear Bearing Bushing Heat roller...
Page 384 2A3/4 ( 6 ) Replacing the heat roller separation claws Replace the heat roller separation claws as follows. <Procedure> 1. Open the fixing unit cover. 2. Remove the E-ring from the heat roller separation claw shaft and the springs from the seven heat roller separation claws.
Page 385 2A3/4 ( 7 ) Detaching and refitting the press roller separation claws Replace the press roller separation claws as follows. <Procedure> 1. Open the fixing unit cover. 2. Remove the two E-rings from each of the press roller separation claws and then the four claws.
Page 386 2A3/4 ( 8 ) Replacing the cooling filter Replace the cooling filter as follows. <Procedure> 1. Remove the screw holding the ozone filter retainer and then the retainer. 2. Replace the cooling filter. Cooling filter Screw Ozone filter retainer Figure 3-3-90 Detaching the cooling filter 3.
Page 387 2A3/4 ( 9 ) Replacing the ozone filter Replace the ozone filter as follows. <Procedure> 1. Remove the two screws holding the lower left cover and then the cover. 2. Remove the four screws holding the middle right cover and then the cover. 3.
Page 388 2A3/4 (10) Adjusting the fixing pressure (reference) Adjust fixing pressure when paper creases, fixing is defective, or after the fixing pressure spring is replaced. <Procedure> 7.0±0.5 mm Start Enter maintenance mode. Enter "161" using the numeric keys and press the print key. •...
Page 389: Pulley
2A3/4 3-3-10 Feedshift and duplex section ( 1 ) Detaching and refitting the duplex forwarding pulley Replace the duplex forwarding pulley as follows. <Procedure> 1. Open the duplex unit. 2. Remove the stop ring and duplex forwarding pulley. 3. Refit all removed parts. ∗...
Page 390 2A3/4 ( 2 ) Detaching and refitting the switchback roller, duplex upper registration roller Replace the switchback roller and duplex registration roller as follows. <Procedure> • Detaching the switchback roller 1. Open the duplex unit. 2. Remove the two screws holding the duplex unit front cover and then the cover. (only for 42 ppm) 3.
Page 391 2A3/4 4. Remove the four screws and the duplex unit from the rails. 5. Remove the two screws holding the duplex cover and then the cover. 6. Detach the 6-pin connector of the side registration section and the 3-pin connector of the side registration home position switch, and unlock the edging.
Page 392 2A3/4 10. Remove the screw holding the switchback feedshift solenoid and then the solenoid. Switchback feedshift solenoid Screw Figure 3-3-97 Detaching the switchback feedshift solenoid 11. Remove the E-ring and then the bushing at the front of the duplex unit. Bushing E-ring Figure 3-3-98 Detaching the switchback roller (1)
Page 393: Gear
2A3/4 12. Remove the E-ring and then the fixing drive gear at the rear of the duplex unit. 13. Remove the pin, E-ring and bushing. 14. Remove the stop ring holding the switchback roller and then the roller from the shaft. ∗...
Page 394 2A3/4 • Detaching the duplex upper registration roller 1. Remove the duplex unit front cover (42 ppm only) and then the duplex unit cover. 2. Remove the screw holding the switchback feedshift solenoid and then the solenoid. 3. Remove the E-ring and then the bushing at the tront of the duplex unit. Bushing E-ring Figure 3-3-100 Detaching the duplex upper registration roller (1)
Page 395 2A3/4 4. Remove the two screws holding the stock switch mount and then the mount. 5. Remove the E-ring the at the rear of the duplex unit and then the duplex registration gear. 6. Remove the spring pin and bushing, and then the duplex upper registration roller. Duplex upper registration roller Stock switch mount...
Page 396 2A3/4 ( 3 ) Adjusting the position of the side registration section Perform the following adjustment if there is a regular error between the centers of the original and copy image during duplex copying (second face). <Procedure> Start Original Copy Copy example 1 example 2...
Page 397 2A3/4 ( 4 ) Adjusting the side registration amount Perform the following adjustment if paper is fed askew during refeed from the duplex unit. Side registration rear guide <Procedure> Paper Start Enter maintenance mode. Side registration front guide Enter "052" using the numeric keys. A : 1 mm Press the print key.
Page 398: Belt
2A3/4 3-3-11 SRDF section ( 1 ) Detaching and refitting the DF original feed pulley and the DF forwarding pulleys Clean or replace the DF original feed pulley and DF forwarding pulleys as follows. <Procedure> 1. Open the DF original reversing cover. 2.
Page 399 2A3/4 • Detaching DF forwarding pulleys 5. Remove the stop ring and bushing. While lifting the forwarding shaft, remove the DF forwarding pulleys. 6. Clean or replace the DF original feed pulley and DF forwarding pulleys. 7. Refit all removed parts. ∗...
Page 400 2A3/4 ( 2 ) Detaching and refitting the DF separation pulley Clean or replace the DF separation pulley as follows. <Procedure> 1. Open the DF reversing cover. 2. Remove the two screws holding the upper original feed section cover and then the cover.
Page 401 2A3/4 6. Remove the two screws holding the DF original feed lower guide and the two screws holding the DF original feed upper guide. 7. Loosen the other two screws on the DF original feed lower guide. 8. While lifting the DF original feed upper guide and pressing the original set switch actuator, remove the DF original feed lower guide.
Page 402 2A3/4 11. Remove the two stop rings and pin to remove the DF separation pulley from the separation shaft. 12. Clean or replace the DF separation pulley. 13. Refit all removed parts. ∗ When fitting the DF separation pulley, ensure that the side having the one-way clutch faces the machine rear.
Page 403 2A3/4 ( 3 ) Adjusting the lateral squareness of the DF Perform the following adjustment if the copy image is skewed laterally (lateral squareness is not obtained). Caution: • Before making the following adjustment, output a 1 DOT-LINE PG pattern in maintenance item U089 to use as the original for the adjustment.
Page 404 2A3/4 • Adjusting 1. Open the SRDF. 2. Loosen the screw securing the right leg of the SRDF on the right. 3. Adjust the position of the SRDF by rotating the adjustment screw behind the right leg of the SRDF. 4.
Page 405 2A3/4 ( 4 ) Adjusting the DF magnification Adjust magnification in the auxiliary scanning direction if magnification is incorrect when the DF is used. U066 U053 U034 U402 U065 (P.3-2-21) (P.3-3-18) (P.3-3-20) (P.3-3-37) (P.3-3-39) U403 U071 U404 U070 (P.3-3-40) (P.3-3-98) (P.3-3-100) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode.
Page 406 2A3/4 ( 5 ) Adjusting the DF center line Perform the following adjustment if there is a regular error between the centers of the original and the copy image. U034 U 402 U067 U403 U404 U072 (P.3-3-19) (P.3-3-20) (P.3-3-38) (P.3-3-40) (P.3-3-100) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode.
Page 407 2A3/4 ( 6 ) Adjusting the scanning start position when the DF is used Perform the following adjustment if there is a regular error between the leading or trailing edges of the original and the copy image. U034 U 402 U066 U403 U404...
Page 408 2A3/4 (6-2) Adjusting the DF trailing edge registration <Procedure> Start Enter maintenance mode. Original Copy Enter "071" using the numeric example keys and press the print key. Figure 3-3-117 To adjust the DF trailing edge registration, select "TRAIL EDGE ADJ." Press the interrupt key.
Page 409 2A3/4 ( 7 ) Adjusting the margins for scanning the original from the DF Perform the following adjustment if margins are not correct. U402 U403 U404 (P.3-3-20) (P.3-3-40) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode. <Procedure>...
Page 410 2A3/4 Proceed to another mode? Press the stop/clear key. Exit maintenance mode. DF leading edge margin (3±1.0mm) DF left margin DF right margin (2±0.5mm) (2±0.5mm) Original DF trailing edge margin (3±1.0mm) Figure 3-3-118 3-3-101...
Page 411: Large Paper Deck Section
2A3/4 3-3-12 Large paper deck section (42 ppm: optional/52 ppm: standard) ( 1 ) Detaching and refitting the upper and lower deck separation rollers Clean or replace the upper and lower deck separation rollers as follows. <Procedure> 1. Open the large paper feed deck. 2.
Page 412 2A3/4 ( 2 ) Detaching and refitting the deck paper conveying unit assembly <Procedure> 1. Open the large paper deck. 2. Open the deck right cover and remove the deck rear cover. 3. Remove the spring and four screws holding the deck paper conveying motor bracket and then the bracket.
Page 413 2A3/4 ( 3 ) Detaching and refitting deck paper feed roller 1 Clean or replace deck paper feed roller 1 as follows. <Procedure> 1. Remove the stop ring. 2. While pressing the roller down, pull out the shaft. 3. Take deck paper feed roller 1 out and clean or replace. 4.
Page 414 2A3/4 ( 4 ) Adjusting the position of the center adjuster (center line alignment) Perform the following adjustment if the center lines of the original and copy image are misaligned. <Procedure> Start Retighten the two screws Make a test copy. securing the center adjuster and close the large paper deck.
Page 415: Pcb Initial Settings
2A3/4 CONTENTS 3-4 PCB Initial Settings 3-4-1 Replacing the main PCB ..............3-4-1 (1) Replacing the main PCB only ............3-4-1 (2) Replacing the main PCB and backup RAM ......... 3-4-1 3-4-2 Replacing the main PCB ROMs ............3-4-2 3-4-3 Adjustment-free variable resisters (VR) ..........3-4-3 1-1-23...
Page 416: Replacing The Main Pcb
2A3/4 3-4-1 Replacing the main PCB (1) Replacing the main PCB only After replacing the main PCB, remove the backup RAM (IC15) from the old main PCB and fit it to the new main PCB to maintain the original setting data. (2) Replacing the main PCB and backup RAM When replacing the backup RAM along with the main PCB, perform the following steps.
Page 417: Replacing The Main Pcb Roms
2A3/4 3-4-2 Replacing the main PCB ROMs When replacing the ROMs on the main PCB, perform the following steps. Main ROM IC (P/N 2A368010) Engine ROM IC (P/N 2A368020) Scanner ROM IC (P/N 2A368060) Procedure 1. Turn the main switch off and disconnect the power plug. 2.
Page 418: Adjustment-Free Variable Resisters (Vr)
2A3/4 3-4-3 Adjustment-free variable resisters (VR) The variable resistors listed below are set at the factory prior to shipping and should not be adjusted in the field. • High-voltage transformer PCB: VR101, VR102, VR201, VR202, VR301, VR401, VR402 • Power source PCB: VR301 3-4-3...
Page 419 2A3/4 CONTENTS 3-5 Self-Diagnosis 3-5-1 Self-diagnosis ..................3-5-1 (1) Self-diagnostic function ............... 3-5-1 1-1-25...
Page 420 2A3/4 3-5-1 Self-diagnosis (1) Self-diagnostic function This unit is equipped with a self-diagnostic function. When a problem is detected, copy- ing is disabled and the problem displayed as a code consisting of "C" followed by a number between 001 and 924, indicating the nature of the problem. A message is also displayed requesting the user to call for service.
Page 421 2A3/4 Self diagnostic codes Remarks Code Contents Check procedures/ Causes corrective measures C001 Memory copy PCB 1 com- Defective Replace memory copy PCB 1 munication problem memory copy and check for correct opera- • Problems with data from PCB 1. tion.
Page 422 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C022 Communication problem Defective en- Replace the engine ROM IC between the engine PCB gine ROM IC. on the main PCB and check and main PCB for correct operation. • There is no reply after 20 Defective main Replace the main PCB and retries at communication.
Page 423 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C026 Memory copy PCB 1 com- Poor contact of Check the connection of con- munication problem the connector nector CN2 on the main PCB • There is no reply after five terminals.
Page 424 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C034 Finisher communication Poor contact of Check the connection of con- problem* the connector nectors CN21 on the engine • Communication errors from terminals. PCB and CN2 on the finisher the communication micro- main PCB, and the continuity computer (IC56) on the across the connector termi-...
Page 425 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C200 Drive motor problem Poor contact of Reinsert the connector. Also • DM LOCK signal remains the drive motor check for continuity within the high for 1 s, 1 s after the connector ter- connector cable.
Page 426 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C220 Side registration motor Defective side Check for continuity across problem registration mo- the coil. If none, replace the • A problem where the side tor. side registration motor. registration home position Defective side Check if CN9-12 on the en- switch does not turn off af-...
Page 427 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C231 Desk drive motor prob- Defective drive Check if rollers and gears ro- lem* transmission tate smoothly. If not grease • DDM LOCK signal remains system. the bushings and gears. high for 1 s, 2 s after the Check for broken gears and desk drive motor has replace if any.
Page 428 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C242 Lower lift motor problem Defective lower Check if CN15-4 on the en- • When the drawer is in- lift limit switch. gine PCB goes low when the serted, the lower lift limit lower lift limit switch is turned switch does not turn on on.
Page 429 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C244 Lower desk lift motor Broken gears Replace the lower desk lift problem* or couplings motor. • When the drawer is in- of the lower serted, the lower desk lift desk lift mo- limit switch does not turn tor.
Page 430 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C332 Scanner watchdog prob- Defective main Replace the main PCB and PCB. check for correct operation. • The main routine does not run within 8.192 ms of the main switch being turned C340 Original detection posi- Poor contact of...
Page 431 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C401 Polygon motor steady- Defective Check if 24 V DC is supplied state problem power source to CN6-5 on the engine PCB. • The polygon motor rotation PCB. If not, replace the power is not stable for 600 ms af- source PCB.
Page 432 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C610 Broken fixing unit ther- Fixing unit Check and reinstall if neces- mistor wire heater M or S sary. • The fixing temperature installed incor- does not increase for 40 s rectly.
Page 433 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C630 Abnormally high fixing Shorted fixing Measure the resistance. If it is temperature unit thermistor. infinite, replace the fixing unit • The fixing temperature ex- thermistor. ceeds 220˚C/428˚F for 10 Broken fixing Replace the power source unit heater con- PCB.
Page 434 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C730 Broken external tempera- Poor contact of Reinsert the connector. Also ture thermistor wire the humidity check for continuity within the • The input voltage is above sensor PCB connector cable. If none, rem- 4.5 V (230 bits).
Page 435 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C801 Finisher paper conveying The paper Reinsert the connector. Also motor problem* conveying check for continuity within the • The paper conveying mo- motor con- connector cable. If none, rem- tor lockup signal is de- nector makes edy or replace the cable.
Page 436 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C814 Finisher tray elevation The tray eleva- Reinsert the connector. Also motor problem* tion motor con- check for continuity within the • The sort tray is not de- nector makes connector cable. If none, rem- tected in the home position poor contact.
Page 437 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C818 Finisher rear jogger motor The rear jog- Reinsert the connector. Also problem* ger motor check for continuity within the • While the rear jogger is not connector connector cable. If none, rem- detected in the home posi- makes poor edy or replace the cable.
Page 438 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C821 Finisher front stapler The front sta- Reinsert the connector. Also problem* pler connector check for continuity within the • The front stapler home po- makes poor connector cable. If none, rem- sition sensor does not contact.
Page 439 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C920 Deck paper conveying The deck paper Reinsert the connector. Also motor problem* conveying mo- check for continuity within the • No pulse is input within tor connector connector cable. If none, rem- 500 ms of the start-up.
Page 440 2A3/4 Remarks Code Contents Check procedures/ Causes corrective measures C922 Paper deck motor 2 prob- Paper deck Reinsert the connector. Also lem* motor 2 con- check for continuity within the • No pulse is input within 20 nector makes connector cable. If none, rem- ms of the start-up.
Page 441 2A3/4 CONTENTS 3-6 Troubleshooting 3-6-1 Image formation problems ..............3-6-1 (1) No image appears (entirely white)..........3-6-4 (2) No image appears (entirely black)..........3-6-5 (3) Image is too light................. 3-6-6 (4) Background is visible..............3-6-6 (5) A white line appears longitudinally..........3-6-7 (6) A black line appears longitudinally.
Page 442 2A3/4 (7) A paper jam in the paper feed section is indicated during copying (multiple sheets in paper feed section)......3-6-22 (8) A paper jam in the paper feed section is indicated during copying (multiple sheets in copier vertical conveying section).
Page 443: Paper Feed Clutch
2A3/4 3-6-4 Electrical problems ................3-6-73 • Copier ..................... 3-6-73 (1) The machine does not operate when the main switch is turned on................... 3-6-73 (2) The drive motor does not operate (C200)......... 3-6-73 (3) The scanner motor does not operate........3-6-74 (4) The upper lift motor does not operate.
Page 444 2A3/4 (42) The size of paper in the lower drawer is not displayed correctly..............3-6-85 (43) A paper jam in the paper feed, paper conveying or fixing section is indicated on the touch panel immediately after the main switch is turned on............3-6-86 (44) The message requesting covers to be closed is displayed when the front, left and right covers are closed.
Page 445 2A3/4 • Feedshift and duplex sections ............3-6-101 (1) No refeed................. 3-6-101 (2) Paper is refed askew............... 3-6-101 (3) Paper jams................3-6-101 (4) Abnormal noise is heard............3-6-101 • Large paper deck (42 ppm: optional/52 ppm: standard) ....3-6-102 (1) No primary paper feed.
Page 446: No Image Appears (Entirely White)
2A3/4 3-6-1 Image formation problems (1) No image appears (2) No image appears (3) Image is too light. (entirely white). (entirely black). See page 3-6-4 See page 3-6-5 See page 3-6-6 (4) Background is visible. (5) A white line appears (6) A black line appears longitudinally.
Page 447: Paper Creases
2A3/4 (13) Paper creases. (14) Offset occurs. (15) Image is partly miss- ing. See page 3-6-11 See page 3-6-11 See page 3-6-12 (17) Image is out of focus. (18) Image center does (16) Fixing is poor. not align with the original center.
Page 448: Toner Scatters At The Leading Edge Of The Image
2A3/4 (25) Toner scatters at the leading edge of the image. See page 3-6-17 3-6-3...
Page 449 2A3/4 (1) No image appears Causes (entirely white). 1. No transfer charging. Causes Check procedures/corrective measures 1. No transfer charging. A. Broken transfer charger wire. Replace the wire. B. The connector terminals of the Reinsert the connector. Also check for high-voltage transformer PCB continuity within the connector cable.
Page 450 2A3/4 (2) No image appears Causes (entirely black). 1. No main charging. 2. Exposure lamp fails to light. Causes Check procedures/corrective measures 1. No main charging. A. Broken main charger wire. Replace the wire. B. Leaking main charger housing. Clean the main charger wire, grid and shield. C.
Page 451 2A3/4 (3) Image is too light. Causes 1. Insufficient toner. 2. Deteriorated developer. 3. Dirty or deteriorated drum. Causes Check procedures/corrective measures 1. Insufficient toner. If the display shows the message requesting toner replenishment, replace the cartridge. 2. Deteriorated developer. Check the number of copies made with the current developer.
Page 452 2A3/4 (5) A white line appears Causes longitudinally. 1. Dirty or flawed transfer charger wire. 2. Foreign matter in the developing section. 3. Flawed drum. 4. Dirty shading plate. Causes Check procedures/corrective measures 1. Dirty or flawed transfer charger Clean the transfer charger wire or, if it is flawed, replace it.
Page 453 2A3/4 (7) A black line appears Causes laterally. 1. Flawed drum. 2. Dirty developing section. 3. Leaking main charger housing. Causes Check procedures/corrective measures 1. Flawed drum. Replace the drum (see page 3-3-45). 2. Dirty developing section. Clean any part contaminated with toner or carrier in the developing section.
Page 454: Gear
2A3/4 (9) Black dots appear on Causes the image. 1. Dirty or flawed drum. 2. Deformed or worn cleaning blade. Causes Check procedures/corrective measures 1. Dirty or flawed drum. Clean the drum or, if it is flawed, replace it (see page 3-3-45). 2.
Page 455 2A3/4 (11) The leading edge of the Causes image is consistently 1. Misadjusted leading edge registration. misaligned with the original. Causes Check procedures/corrective measures 1. Misadjusted leading edge Readjust the leading edge registration (see registration. pages 3-3-18 and 39). (12) The leading edge of the Causes image is sporadically 1.
Page 456 2A3/4 (13) Paper creases. Causes 1. Paper curled. 2. Paper damp. 3. Defective pressure springs. Causes Check procedures/corrective measures 1. Paper curled. Check the paper storage conditions. 2. Paper damp. Check the paper storage conditions. 3. Defective pressure springs. Replace the pressure springs. (14) Offset occurs.
Page 457 2A3/4 Causes (15) Image is partly missing. 1. Paper damp. 2. Paper creased. 3. Drum condensation. 4. Flawed drum. Causes Check procedures/corrective measures 1. Paper damp. Check the paper storage conditions. 2. Paper creased. Replace the paper. 3. Drum condensation. Clean the drum (see page 3-3-50).
Page 458 2A3/4 (17) Image is out of focus. Causes 1. Defective image scanning unit. Causes Check procedures/corrective measures 1. Defective image scanning unit. Replace the image scanning unit. (18) Image center does not Causes align with the original 1. Misadjusted image center line. center.
Page 459 2A3/4 (19) Image is not square. Causes 1. Laser scanner unit positioned incorrectly. 2. Image scanning unit positioned incorrectly. Causes Check procedures/corrective measures 1. Laser scanner unit positioned Adjust the installation position of the laser incorrectly. scanner unit (see page 3-3-33). 2.
Page 460 2A3/4 (21) There is a regular Causes error between the 1. Misadjusted DF center line. centers of the original and copy image when the SRDF is used. Causes Check procedures/corrective measures 1. Misadjusted DF center line. Readjust the DF center line (see page 3-3-97). (22) There is a regular Causes error between the...
Page 461 2A3/4 (23) When the duplex unit Causes is used, the center of 1. Side registration section installed incorrectly. the original image and that of the copy image do not align. Causes Check procedures/corrective measures 1. Side registration sec-tion installed Adjust the installation position of the side incor-rectly.
Page 462 2A3/4 (25) Toner scatters at the Causes leading edge of the 1. Upper registration cleaner assembly soiled with image. paper powder. Causes Check procedures/corrective measures 1. Upper registration cleaner Vacuum clean the paper powder from the assembly soiled with paper upper registration cleaner assembly.
Page 463: Paper Misfeeds
2A3/4 3-6-2 Paper misfeeds • Copier Problem Causes/check procedures Corrective measures A piece of paper torn from copy Check visually and remove it, if A paper jam paper is caught around paper any. in the paper feed switch 1/2/3, the feed feed, convey- switch,registration switch or ing or eject...
Page 464: A Paper Jam In The Paper Feed, Conveying Or Eject Section Is Indicated As Soon As The Main Switch Is Turned On
2A3/4 Problem Causes/check procedures Corrective measures Defective eject switch. With 5 V DC present at CN3- A paper jam B10 on the engine PCB, check in the paper if CN3-B9 on the engine PCB feed, convey- remains low when the eject ing or eject switch is turned on and off.
Page 465 2A3/4 Problem Causes/check procedures Corrective measures Paper in the lower drawer is Change the paper. A paper jam extremely curled. in the paper Check if the upper paper feed Check visually and replace any feed section pulley, lower paper feed pulley deformed pulleys.
Page 466 2A3/4 Problem Causes/check procedures Corrective measures Broken feed switch actuator. Check visually and replace the A paper jam feed switch if its actuator is bro- in the paper ken. feed section Defective feed switch. With 5 V DC present at CN13-2 is indicated on the engine PCB, check if during copy-...
Page 467 2A3/4 Problem Causes/check procedures Corrective measures Broken registration switch ac- Check visually and replace the A paper jam tuator. registration switch if its actuator in the paper is broken. feed section Defective registration switch. With 5 V DC present at CN8-B1 is indicated on the engine PCB, check if during copy-...
Page 468: Copying (No Paper Feed From Copier Upper Drawer)
2A3/4 Problem Causes/check procedures Corrective measures (10) Check if the registration clutch Check visually and remedy if A paper jam malfunctions. necessary. in the paper Electrical problem with the reg- Check (see page 3-6-81). conveying istration clutch. section is indi- cated during Check if the upper and lower Check visually and remedy if...
Page 469: Copying (Jam In Converging Section)
2A3/4 Problem Causes/check procedures Corrective measures (13) Broken switchback eject switch Check visually and replace the A paper jam actuator. switchback eject switch if its in the eject actuator is broken. section is Defective switchback eject With 5 V DC present at CN3-A2 indicated switch.
Page 470 2A3/4 • SRDF Problem Causes/check procedures Corrective measures A piece of paper torn from an Remove any found. An original original is caught around the jams when original feed switch. the main Defective original feed switch. With 5 V DC present at CN6-B4 switch is on the DF driver PCB, check if turned on.
Page 471: Copying (Multiple Sheets In Paper Feed Section)
2A3/4 Problem Causes/check procedures Corrective measures Defective DF timing switch. With 5 V DC present at An original CN6-A15 on the DF driver PCB, jams in the check if CN6-A14 on the DF SRDF during driver PCB remains low when copying (a the DF timing switch is turned jam in the...
Page 472: Copying (Multiple Sheets In Copier Vertical Conveying Section)
2A3/4 Problem Causes/check procedures Corrective measures Check if the original conveying Check and remedy. An original motor malfunctions. jams in the Check if the middle original Check and remedy. SRDF during conveying roller and middle copying (a original conveying pulley jam in the contact each original feed/...
Page 473: Copying (Jam In Fixing Section)
2A3/4 • Feedshift and duplex sections Problem Causes/check procedures Corrective measures Broken feedshift switch actua- Check visually and replace the A paper jam tor. feedshift switch if its actuator is in the broken. feedshift sec- Defective feedshift switch. With 5 V DC present at CN3-A5 tion is indi- on the engine PCB, check if cated during...
Page 474: Copying (Jam In Feedshift Section)
2A3/4 Problem Causes/check procedures Corrective measures Defective duplex eject switch. With 5 V DC present at CN9-13 A paper jam on the engine PCB, check if in the duplex CN9-11 on the engine PCB section is indi- goes low when the duplex eject cated during switch is tuned on.
Page 475: Copying (Jam In Duplex Stock Section)
2A3/4 • Large paper deck (42 ppm: optional/52 ppm: standard) Problem Causes/check procedures Corrective measures Check visually and replace the Broken deck paper conveying deck paper conveying motor or A paper jam motor gear. in the large its gear if necessary. paper deck is Change the paper.
Page 476: Horizontal Paper Path)
2A3/4 Problem Causes/check procedures Corrective measures Broken deck paper conveying Check visually and replace the A paper jam motor gear. deck paper conveying motor or in the large its gear if necessary. paper deck is Paper is extremely curled. Change the paper. indicated during Defective paper path sensor 2.
Page 477: Horizontal Paper Path)
2A3/4 Problem Causes/check procedures Corrective measures Broken deck paper conveying Check visually and replace the A paper jam motor gear. deck paper conveying motor or in the large its gear if necessary. paper deck is Paper is extremely curled. Change the paper. indicated during Defective paper path sensor 3.
Page 478: Pcb Terminal Voltages
2A3/4 3-6-3 PCB terminal voltages Precautions • When handling the circuit boards, do not touch the components with bare hands. • ICs can be damaged by static discharges. If a PCB contains ICs, do not touch the ICs, cable connectors or edge connectors. •...
Page 479 2A3/4 Terminals (CN) Voltage Remarks 120 V AC 120 V AC supply, input (120 V specs) 220 - 240 V AC 220 - 240 V AC supply, input (220 - 240 V specs) 120 V AC 120 V AC supply, output (120 V specs) 220 - 240 V AC 220 - 240 V AC supply, output (220 - 240 V specs)
Page 480 2A3/4 Terminals (CN) Voltage Remarks 10-1 120/0 V AC H1 on/off, output (120 V specs) 220 - 240/0 V AC H1 on/off, output (220 - 240 V specs) 10-2 120/0 V AC H2 on/off, output (120 V specs) 220 - 240/0 V AC H2 on/off, output (220 - 240 V specs) 3-6-35...
Page 481: Engine Pcb
2A3/4 (2) Engine PCB CN19 CN15 CN14 CN20 IC23 B C E 3-6-36...
Page 482 2A3/4 Terminals (CN) Voltage Remarks 2-B10 0 - 5 V DC TNS detection voltage, output 2-B10 0/5 V DC TLDS toner absent/present detection, output 2-B10 0/5 V DC TLS on/off, output 2-B10 0/5 V DC SBESW on/off, output 2-B10 0/5 V DC ESW on/off, output 2-B10 0/5 V DC...
Page 483 2A3/4 Terminals (CN) Voltage Remarks 1-42 2-B10 0/5 V DC DM LOCK signal, output 1-43 2-B10 0/5 V DC PWSW-L (DIG2) on/off, output (inch specs) 1-44 2-B10 0/5 V DC PWSW-L (DIG1) on/off, output (inch specs) 1-45 2-B10 0/5 V DC PWSW-L (DIG0) on/off, output (inch specs) 1-46 2-B10...
Page 484 2A3/4 Terminals (CN) Voltage Remarks 1-77 2-B10 0/24 V DC SCL on/off, input 1-78 2-B10 0/24 V DC FSSOL latch-on signal, input 1-79 2-B10 0/24 V DC FSSOL release signal, input 1-80 2-B10 24/0 V DC PRY on/off, input 1-81 2-B10 0/24 V DC SSW1 control voltage, input...
Page 485 2A3/4 Terminals (CN) Voltage Remarks 1-117 2-B10 0/5 V DC CCM reverse rotation signal, input 1-118 2-B10 0/24 V DC CLM-L on/off, input 1-119 2-B10 0/24 V DC CLM-U on/off, input 1-120 2-B10 0/5 V DC (pulse) SRM coil energization pulse, input (B_) 1-121 2-B10 0/5 V DC (pulse)
Page 486 2A3/4 Terminals (CN) Voltage Remarks 2-B12 2-B10 24 V DC 24 V DC supply for TNS, output 3-A1 3-A3 0/5 V DC SBESW on/off, input 3-A2 3-A3 5 V DC 5 V DC supply for SBESW, output 3-A4 3-A6 0/5 V DC FSSW on/off, input 3-A5 3-A6...
Page 487 2A3/4 Terminals (CN) Voltage Remarks 5-A13, -A14 5-A11, -A12 24 V DC 24 V DC supply for PCM, output 5-B1 5-B2 24 V DC 24 V DC supply for HVTPCB, output 5-B3 5-B9 0/5 V DC HVTPCB ST ALM, input 5-B4 5-B9 0 - 5 V DC...
Page 488 2A3/4 Terminals (CN) Voltage Remarks 0/5 V DC DUPRSW on/off, input 0/5 V DC DUPPCSW on/off, input 9-11 0/5 V DC DUPESW on/off, input 9-12 9-10 5/0 V DC SRHPSW on/off, input 9-13 5 V DC 5 V DC supply for DUPESW, output 9-14 9-10 5 V DC...
Page 489 2A3/4 Terminals (CN) Voltage Remarks 12-A9 12-B7 24 V DC 24 V DC supply for FCL3, output 12-A10 12-B7 0/24 V DC FCL3 on/off, output 12-B2 12-B6 0/5 V DC (pulse) DM drive clock pulse, output 12-B3 12-B6 0/5 V DC DM LOCK signal, input 12-B4 12-B6...
Page 490 2A3/4 Terminals (CN) Voltage Remarks 15-13 15-12 0/24 V DC PFCL-U on/off, output 15-14 15-12 0/24 V DC PFCL-L on/off, output 15-15 15-12 24 V DC 24 V DC supply for PFCL-U, output 15-16 15-12 24 V DC 24 V DC supply for PFCL-L, output 16-1 16-6 24 V DC...
Page 491 2A3/4 Terminals (CN) Voltage Remarks 19-A10 19-B9 24 V DC 24 V DC supply for key card* , output 19-B1 19-B9 0/5 V DC Key card* control signal, output 19-B2 19-B9 0/5 V DC Key card* control signal, output 19-B3 19-B9 0/5 V DC Key card*...
Page 492: Main Pcb
2A3/4 (3) Main PCB IC11 C131 L3 TR1 L14 C132 C133 RA1 RA2 C134 IC20 RA10 R210 TR30 L108 IC18 R212 XT14 L105 L102 RA7 RA8 RA12 L106 R191 L104 RA11 L107 RA13 IC29 L128 L120 88 C22 RA14 L111 L112 L109 L110...
Page 493 2A3/4 Terminals (CN) Voltage Remarks 2-A4 0 - 5 V DC TNS detection voltage, input 2-A4 0/5 V DC TLDS toner absent/present, input 2-A4 0/5 V DC TLS on/off, input 2-A4 0/5 V DC SBESW on/off, input 2-A4 0/5 V DC ESW on/off, input 2-A4 0/5 V DC...
Page 494 2A3/4 Terminals (CN) Voltage Remarks 1-42 2-B10 0/5 V DC DM LOCK signal, input 1-43 2-B10 0/5 V DC PWSW-L (DIG2) on/off, input (inch specs) 1-44 2-B10 0/5 V DC PWSW-L (DIG1) on/off, input (inch specs) 1-45 2-B10 0/5 V DC PWSW-L (DIG0) on/off, input (inch specs) 1-46 2-B10...
Page 495 2A3/4 Terminals (CN) Voltage Remarks 1-80 2-A4 24/0 V DC PRY on/off, output 1-81 2-A4 0/24 V DC SSW1 control voltage, output 1-82 2-A4 24/0 V DC MSW OFF signal, output 1-83 2-A4 0/24 V DC HVTPCB (SC) on/off, output 1-84 2-A4 0/15 V DC...
Page 496 2A3/4 Terminals (CN) Voltage Remarks 1-120 2-A4 0/5 V DC (pulse) SRM coil energization pulse, output (B_) 1-121 2-A4 0/5 V DC (pulse) SRM coil energization pulse, output (A_) 1-122 2-A4 0/5 V DC (pulse) SRM coil energization pulse, output (B) 1-123 2-A4 0/5 V DC (pulse)
Page 497 2A3/4 Terminals (CN) Voltage Remarks 2-A14 2-A13 0/5 V DC MCPCB1 control signal MCP IDA, input 2-A16 2-A15 0/5 V DC MCPCB1 control signal MCP IDB, input 2-B1 2-B6 0/5 V DC MCPCB1 control signal SEMCP MCP1, input 2-B2 2-B6 0/5 V DC MCPCB1 RESET signal, output 2-B3...
Page 498 2A3/4 Terminals (CN) Voltage Remarks 3-A11 3-A4 0/5 V DC (pulse) MCPCB2* image control clock pulse, input 3-A12 3-A13 0/5 V DC MCPCB2* control signal MCP MREW, input 3-A14 3-A13 0/5 V DC MCPCB2* control signal MCP IDA, input 3-A16 3-A15 0/5 V DC MCPCB2*...
Page 499 2A3/4 Terminals (CN) Voltage Remarks 4-16 4-17 0/3.3 V DC (pulse) Printer board* clock pulse, input 4-18 4-17 0/3.3 V DC (pulse) Printer board* POVSYNC signal, input 4-20 4-19 0/3.3 V DC Printer board* PMRE signal, input 4-22 4-21 0/3.3 V DC (pulse) Printer board* PID0 signal, input 4-23...
Page 500 2A3/4 Terminals (CN) Voltage Remarks 0/5 V DC LSU VD1 – signal, output 0/5 V DC LSU VD1 + signal, output 0/5 V DC LSU ENABLE signal, output 0/5 V DC LSU ADJUST2 signal, output 7-11 7-10 0/5 V DC LSU ADJUST1 signal, output 7-13 7-12...
Page 501 2A3/4 Terminals (CN) Voltage Remarks 13A-7 5-16 0/5 V DC SBFSSOL on/off, output 13A-9 5-16 0/5 V DC OFSOL release signal, output 13A-10 5-16 0/5 V DC OFSOL latch-on signal, output 13A-11 5-16 0/5 V DC OFM enable signal, output 13B-1 5-16 0/5 V DC...
Page 502: Memory Copy Pcb
2A3/4 (4) Memory copy PCB CN2 1 RA2 RA3 RA4 RA5 RA13 RA14 RA15 RA16 RA19 TP7 TP8 TP9 RA39 RA40 TP10 TP11 RA66 RA61 RA62 RA65 RA68 RA76 RA77 RA78 RA79 RA69 RA67 RA63 RA64 RA70 RA71 RA80 RA81 RA82 RA83 RA84 RA72 RA73 RA74 RA75...
Page 503 2A3/4 Terminals (CN) Voltage Remarks 1-A1 1-A4 0/5 V DC MCPCB1, 2* image control signal MCPSEL, input 1-A2 1-A4 0/5 V DC (pulse) MCPCB1, 2* serial communication signal, input 1-A3 1-A4 0/5 V DC (pulse) MCPCB1, 2* communication control signal MCP1 ACK, output 1-A5 1-A4...
Page 504 2A3/4 Terminals (CN) Voltage Remarks 1-B12 1-B7 0/5 V DC (pulse) MCPCB1, 2* image control signal DATA4, input 1-B13 1-B7 0/5 V DC (pulse) MCPCB1, 2* image control signal DATA5, input 1-B14 1-B7 0/5 V DC (pulse) MCPCB1, 2* image control signal DATA6, input 1-B15 1-B7...
Page 505: Scanner Motor Pcb
2A3/4 (5) Scanner motor PCB JP15 JP16 3-6-60...
Page 506 2A3/4 Terminals (CN) Voltage Remarks 0/5 V DC SHPSW on/off, output 0/5 V DC EL on/off, input 0/5 V DC SM enable signal, input 0/5 V DC SM control signal SMOT RET, input 0/5 V DC SM rotation direction switching signal SMOT CWB, input 0/5 V DC (pulse) SM drive clock pulse, input...
Page 507: Ccd Pcb
2A3/4 (6) CCD PCB E C B E C B R28 R27 3-6-62...
Page 508 2A3/4 Terminals (CN) Voltage Remarks CCD drive clock signal φ CLK +, input 1-10, -11 0/5 V DC CCD drive clock signal φ CLK –, input 1-10, -11 0/5 V DC CCD drive clock signal φ RS +, input 1-10, -11 0/5 V DC CCD drive clock signal φ...
Page 509: Df Driver Pcb
2A3/4 (7) DF driver PCB Terminals (CN) Voltage Remarks 1-3, -4 24 V DC 24 V DC supply, input 1-3, -4 24 V DC 24 V DC supply, input 1-9, -10 5 V DC 5 V DC supply, input 1-9, -10 5 V DC 5 V DC supply, input 1-9, -10...
Page 510 2A3/4 Terminals (CN) Voltage Remarks 2-14 1-9, -10 0/5 V DC OFM enable signal, input 2-15 1-9, -10 0/5 V DC OFSOL latch-on signal, input 2-16 1-9, -10 0/5 V DC OFSOL release signal, input 2-17 1-9, -10 0/5 V DC SBFSSOL on/off, input 2-19 1-9, -10...
Page 511 2A3/4 Terminals (CN) Voltage Remarks 5-B1 1-3, -4 24 V DC 24 V DC supply for OFM, output (A) 5-B2 1-3, -4 24 V DC 24 V DC supply for OFM, output (B) 5-B3 1-3, -4 0/24 V DC (pulse) OFM motor coil energization pulse, output 5-B4 1-3, -4...
Page 512: Operation Unit Main Pcb
2A3/4 (8) Operation unit main PCB 4 CN4 IC12 IC16 3-6-67...
Page 513 2A3/4 Terminals (CN) Voltage Remarks 0/5 V DC LCD control voltage, output –23 V DC –23 V supply for LCD, output 0/5 V DC (pulse) LCD (XD3) data, output 0/5 V DC (pulse) LCD (XD2) data, output 0/5 V DC (pulse) LCD (XD1) data, output 0/5 V DC (pulse) LCD (XD0) data, output...
Page 514 2A3/4 Terminals (CN) Voltage Remarks 0/5 V DC (pulse) ORPCB scan signal SCAN R2, output 0/5 V DC (pulse) ORPCB scan signal SCAN R3, output 0/5 V DC (pulse) ORPCB scan signal SCAN R4, output 0/5 V DC (pulse) ORPCB LED on DIG LED R1, output 3-10 0/5 V DC (pulse) ORPCB LED on DIG LED R2, output...
Page 515: Deck Main Pcb (42 Ppm: Optional/53 Ppm: Standard)
2A3/4 (9) Deck main PCB (42 ppm: optional/52 ppm: standard) 27C256 M5248P 3-6-70...
Page 516 2A3/4 Terminals (CN) Voltage Remarks 5/0 V DC (pulse) Clock signal for PPSENS1 - 3 and PESENS, output 24/0 V DC DOSSW signal on/off, input 2/0 (pulse)/0 V DC PESENS signal input, paper present/ absent, input 2/0 (pulse)/0 V DC PPSENS2 signal input, paper present/ absent, input 5/0 V DC...
Page 517 2A3/4 Terminals (CN) Voltage Remarks 12-1 12-2 24 V DC Power supply for CM, output 12-3 12-2 5/0 V DC (pulse) CM drive PWM signal, output 12-4 12-2 5 V DC Power supply for CM, output 12-5 12-2 5/0 V DC (pulse) CM FG signal, input 3-6-72...
Page 518: The Main Switch Is Turned On
2A3/4 3-6-4 Electrical problems • Copier Problem Causes Check procedures/corrective measures No electricity at Measure the input voltage. The machine the power outlet. does not op- The power cord is Check the contact between the power plug erate when not plugged in and the outlet.
Page 519 2A3/4 Problem Causes Check procedures/corrective measures Defective drive Run maintenance item U030 and check if The drive mo- motor. the drive motor operates when CN12-B4 on tor does not the engine PCB goes low. If not, replace the operate drive motor. (C200).
Page 520 2A3/4 Problem Causes Check procedures/corrective measures Broken toner feed Check for continuity across the coil. If none, The toner motor coil. replace the toner feed motor. feed motor Poor contact in the Reinsert the connector. Also check for does not op- toner feed motor continuity within the connector cable.
Page 521 2A3/4 Problem Causes Check procedures/corrective measures (10) Broken paper feed Check for continuity across the coil. If none, Paper feed motor coil. replace the paper feed motor. motor does Poor contact in the Reinsert the connector. Also check for not operate paper feed motor continuity within the connector cable.
Page 522 2A3/4 Problem Causes Check procedures/corrective measures (13) Broken charger Check for continuity across the coil. If none, The charger cleaning motor replace the charger cleaning motor. cleaning coil. motor does Poor contact in the Reinsert the connector. Also check for not operate.
Page 523 2A3/4 Problem Causes Check procedures/corrective measures (16) Broken lower pa- Check for continuity across the coil. If none, The lower per feed clutch replace the lower paper feed clutch. paper feed coil. clutch does Poor contact in the Reinsert the connector. Also check for not operate.
Page 524 2A3/4 Problem Causes Check procedures/corrective measures (20) Broken feed clutch Check for continuity across the coil. If none, Feed clutch 4 4 coil. replace feed clutch 4. does not Poor contact in Reinsert the connector. Also check for operate. feed clutch 4 con- continuity within the connector cable.
Page 525 2A3/4 Problem Causes Check procedures/corrective measures (24) Broken eject Check for continuity across the coil. If none, The eject speed switching replace the eject speed switching clutch. speed clutch coil. switching Poor contact in the Reinsert the connector. Also check for clutch does eject speed continuity within the connector cable.
Page 526 2A3/4 Problem Causes Check procedures/corrective measures (28) Defective inverter If the exposure lamp does not turn off with The exposure PCB. CN1-5 and CN1-6 on the inverter PCB high, lamp does not replace the inverter PCB. turn off. Defective scanner If CN3-1 and CN3-2 on the scanner motor motor PCB.
Page 527 2A3/4 Problem Causes Check procedures/corrective measures (32) Broken transfer See page 3-6-4. Transfer charger wire. charging is Poor contact in the not performed high-voltage (C511). transformer PCB connector terminals. Defective main PCB. Defective engine PCB. Defective high- voltage trans- former PCB. (33) Broken separation Replace the separation charger wire (see...
Page 528 2A3/4 Problem Causes Check procedures/corrective measures (34) Defective engine Check if CN5-B10 on the engine PCB goes No develop- PCB. low during copying. If not, replace the engine ing bias is PCB. output. (35) Defective original If the level of CN5-2 on the scanner motor The original detection switch.
Page 529 2A3/4 Problem Causes Check procedures/corrective measures (39) Poor contact in the Reinsert the connector. Also check for The message lower paper switch continuity within the connector cable. If requesting connector termi- none, remedy or replace the cable. paper to be nals.
Page 530 2A3/4 Problem Causes Check procedures/corrective measures (42) Poor contact in the Reinsert the connector. Also check for The size of lower paper length continuity within the connector cable. If paper in the switch* connector none, remedy or replace the cable. lower drawer terminals (inch is not dis-...
Page 531 2A3/4 Problem Causes Check procedures/corrective measures (43) A piece of paper Check and remove if any. A paper jam torn from copy in the paper paper is caught feed, paper around paper feed conveying or switch 1/2/3, the fixing section feed switch or the is indicated eject switch.
Page 532: Others
2A3/4 Problem Causes Check procedures/corrective measures (44) Poor contact in the Reinsert the connector. Also check for The message connector termi- continuity within the connector cable. If requesting nals of safety none, remedy or replace the cable. covers to be switch 1, 2 or 3.
Page 533: Srdf
2A3/4 • SRDF Problem Causes Check procedures/corrective measures Defective original Check for continuity across the coil. If none, The original feed motor coil. replace the original feed motor. feed motor The connector Reinsert the connector. Also check for does not terminals of the continuity within the connector cable.
Page 534 2A3/4 Problem Causes Check procedures/corrective measures Defective switch- Check for continuity across the coil. If none, The switch- back feedshift so- replace the switchback feedshift solenoid. back feedshift lenoid coil. solenoid does The connector Reinsert the connector. Also check for not operate.
Page 535 2A3/4 Problem Causes Check procedures/corrective measures Defective original Check for continuity across the coil. If none, The original feed clutch coil. replace the original feed clutch. feed clutch The connector Reinsert the connector. Also check for does not terminals of the continuity within the connector cable.
Page 536 2A3/4 Problem Causes Check procedures/corrective measures A piece of paper Remove any found. An original torn from an origi- jams when nal is caught the main around the DF switch is timing switch. turned on. Defective DF tim- With 5 V DC present at CN6-A15 on the DF ing switch.
Page 537: Feedshift And Duplex Sections
2A3/4 • Feedshift and duplex sections Problem Causes Check procedures/corrective measures Poor contact in the Reinsert the connector. Also check for The side reg- side registration continuity within the connector cable. If istration motor motor connector none, remedy or replace the cable. does not ro- terminals.
Page 538: Others
2A3/4 Problem Causes Check procedures/corrective measures Broken switchback Check for continuity across the coil. If none, feedshift solenoid replace the switchback feedshift solenoid. switchback coil. feedshift Poor contact in the Reinsert the connector. Also check for solenoid does switchback continuity within the connector cable. If not operate.
Page 539: Large Paper Deck (42 Ppm: Optional/52 Ppm: Standard)
2A3/4 • Large paper deck (42 ppm: optional/52 ppm: standard) Problem Causes Check procedures/corrective measures Incorrect Check the connector. The large connection with paper deck the engine PCB. does not operate when the print key is pressed. Poor contact in the Reinsert the connector.
Page 540 2A3/4 Problem Causes Check procedures/corrective measures Poor contact in the Reinsert the connector. Also check for Paper deck paper deck motor continuity within the connector cable. If motor 2 does 2 connector none, remedy or replace the cable. not operate terminals.
Page 541 2A3/4 Problem Causes Check procedures/corrective measures Defective deck Check if CN4-5 on the deck main PCB goes Paper feed main PCB. low when maintenance item U247 is run. If clutch 2 does not, replace the deck main PCB. not operate. Wiring problem.
Page 542: Mechanical Problems
2A3/4 3-6-5 Mechanical problems • Copier Problem Causes/check procedures Corrective measures Check if the surfaces of the Clean with isopropyl alcohol. No primary following rollers or pulleys are paper feed. dirty with paper powder: for- warding pulleys, upper/lower paper feed pulleys, upper/lower feed rollers, feed rollers 1/2/3/4, feed pulleys, bypass forwarding pulley and bypass upper/lower...
Page 543: The Scanner Does Not Travel
2A3/4 Problem Causes/check procedures Corrective measures Check if the scanner wire is Reinstall the scanner wire (see The scanner loose. page 3-3-24). does not The scanner motor malfunc- See page 3-6-74. travel. tions. Check if the lower paper feed Replace the lower paper feed Multiple sheets pulley is worn.
Page 544 2A3/4 Problem Causes/check procedures Corrective measures Check if the pulleys, rollers and Grease the bearings and gears. Abnormal gears operate smoothly. noise is Check if the following electro- Correct. heard. magnetic clutches are installed correctly: upper/lower paper feed clutches, feed clutches 1/ 2/3/4/5 and bypass paper feed clutch.
Page 545: Srdf
2A3/4 • SRDF Problem Causes/check procedures Corrective measures The surfaces of the DF forward- Check and clean them with iso- No primary ing pulleys, DF original feed propyl alcohol if they are dirty. original feed. pulley or DF separation pulley are dirty with paper powder.
Page 546 2A3/4 • Feedshift and duplex sections Problem Causes/check procedures Corrective measures Check if the surfaces of the Clean with isopropyl alcohol. No refeed. following rollers and pulleys are dirty with paper powder: duplex forwarding pulley, refeed pulley, switchback roller and duplex upper/lower registration rollers.
Page 547 2A3/4 • Large paper deck (42 ppm: optional/52 ppm: standard) Problem Causes/check procedures Corrective measures Check if the upper or lower Clean with isopropyl alcohol. No primary deck separation roller is dirty paper feed. with paper powder. Check if deck paper feed roller Clean with isopropyl alcohol.
Page 548 2A3/4 Problem Causes/check procedures Corrective measures Check if the paper side guides Remedy or replace. Paper jams. are deformed. Check if rollers and gears Grease the bushings and Abnormal operate smoothly. gears. noise is Check for any abnormality with Replace. heard.
Page 549 2A3/4 CONTENTS 3-7 Appendixes Timing chart No. 1 ..................3-7-1 Timing chart No. 2 ..................3-7-2 Timing chart No. 3 ..................3-7-3 Timing chart No. 4 ..................3-7-4 Timing chart No. 5 ..................3-7-5 Timing chart No. 6 ..................3-7-6 Timing chart No.
Page 550 2A3/4 Deck main PCB ................... 3-7-45 Interface PCB ....................3-7-46 SRDF connection diagram ................3-7-47 General connection diagram (42 ppm copier) ..........3-7-48 General connection diagram (52 ppm copier) ..........3-7-49 SRDF wiring diagram .................. 3-7-50 Large paper deck wiring diagram ..............3-7-51 1-1-34...
Page 551 *1: 180°C/356°F (42 ppm) or 190°C/374°F (52 ppm) *2: Copying is possible at the earlier timing of 60 s (42 ppm) or 120 s (52 ppm) after secondary stabilization or 116 s (42 ppm) or 176 s (52 ppm) after PRY turning on. 3-7-1 KM-4230/5230 (MCE)
Page 552 2A3/4 Timing chart No. 2 Scanner operation 3-7-2 KM-4230/5230 (MCE)
Page 553 556 P* OFSW CN6-B5 OSBSW CN6-A5 30 ms + 2337 P* CN5-A10, A11, A12, A13 DFTSW CN6-A14 × *1 During enlargement copying: (magnification 10 – 530) ms *2 Burst of OFM pulses *3 Burst of OCM pulses 3-7-3 KM-4230/5230 (MCE)
Page 554 B5, B6 556 P* OFSW CN6-B5 SBFSSOL CN5-B8 564 P* SBPSOL A CN5-A2 SBPSOL R CN5-A3 OSBSW CN6-A5 30 ms CN5-A10, A11, A12, A13 EFSSOL CN5-A7 DFTSW CN6-A14 *1 Burst of OFM pulses *2 Burst of OCM pulses 3-7-4 KM-4230/5230 (MCE)
Page 555 SBFSSOL CN5-B8 SBPSOL A CN5-A2 SBPSOL R CN5-A3 OSBSW CN6-A5 2337 P* 30 ms + 2337 P* 30 ms CN5-A10, A11, A12, A13 EFSSOL CN5-A7 DFTSW CN6-A14 *1 Burst of OFM pulses *2 Burst of OCM pulses 3-7-5 KM-4230/5230 (MCE)
Page 556 520 ms 300 ms MC REM CN5-B13 700 ms SC REM CN5-B5 210 ms 270 ms TC REM CN5-B7 CN11-3 250 ms CN12-B4 520 ms CN5-A8 100 ms 90 ms BYPSOL CN14-A8 300 ms 200 ms BYPPFCL CN14-A7 3-7-6 KM-4230/5230 (MCE)
Page 557 CN5-B5 TC REM CN5-B7 210 ms 270 ms CN11-3 CN12-B4 250 ms CN5-A8 520 ms PFCL-U CN15-13 100 ms 163 ms FCL2 CN12-A8 50 ms 58 ms PFSW2 CN13-7 FCL1 CN12-A4 28 ms 35 ms PFSW1 CN13-4 3-7-7 KM-4230/5230 (MCE)
Page 558 50 ms 35 ms 50 ms 128 ms 35 ms FCL3 CN12-A10 PFSW3 CN13-10 128 ms 209 ms 35 ms 35 ms FCL2 CN12-A8 209 ms PFSW2 CN13-7 128 ms 35 ms 35 ms FCL1 CN12-A4 PFSW1 CN13-4 3-7-8 KM-4230/5230 (MCE)
Page 559 2A3/4 × × Timing chart No. 9 Duplex copying of an A3/11" 17" book original onto one duplex A4/11" " copy from the copier upper drawer, magnifica- tion ratio 100%, auto copy density control 3-7-9 KM-4230/5230 (MCE)
Page 560 290-30000 ms CFM2 CN3-B6 DB REM CN5-B10 50 ms MC REM CN5-B13 300 ms SC REM CN5-B5 700 ms TC REM CN5-B7 270 ms 270 ms 210 ms 210 ms 270 ms 270 ms 210 ms 210 ms 3-7-10 KM-4230/5230 (MCE)
Page 561 Timing chart No. 11 Primary paper feed from large paper deck right cassette Paper feed shignal from the copier 100 ms 100 ms 64 P 64 P PFSW4 (from the copier) PPSENS1 CN4-9 PPSENS2 CN1-6 PPSENS3 CN1-11 PFCL1 CN4-4 CCL CN4-6 PFCL2 CN4-5 3-7-11 KM-4230/5230 (MCE)
Page 562 Timing chart No. 12 Primary paper feed from large paper deck left cassette Paper feed signal from the copier 100 ms 100 ms 64 P 64 P PFSW4 (from the copier) PPSENS1 CN4-9 PPSENS2 CN1-6 PPSENS3 CN1-11 PFCL1 CN4-4 CCL CN4-6 43 P 43 P PFCL2 CN4-5 3-7-12 KM-4230/5230 (MCE)
Page 563 Power source PCB 2A3/4 D107 R118 R119 CN8-1 D001 TAB1 TAB3 CN8-5 R117 C112 R115 TAB2 C102 R116 CN9-1 R114 D106 TAB4 R122 R121 R120 C103 C101 D109 D108 D105 R108 R113 R111 D103 R109 R112 R110 C104 D104 R125 CN9-3 R129 C113...
Page 564 Power source PCB 2A3/4 C201 R201 CN1-1 D201 CN1-2 Q201 CN1-3 R206 R208 CN1-4 R207 D202 C202 CN5-8 ZD201 C205 R203 R209 F201 C203 C206 CN5-1 C204 CN1-5 R205 CN5-2 R202 R204 CN1-6 L201 CN5-3 CN1-7 CN5-4 CN1-8 F202 Q202 CN5-5 CN3-1 R212...
Page 565 Engine PCB 2A3/4 R173 R179 PWSW-U DIG2 CN9-21 CN1-47 PWSW-U DIG2 DUPPCSW CN9-8 CN1-31 DUPPCSW R174 CN1-48 PWSW-U DIG1 R178 CN1-30 CN1-81 SSW1 DUPESW PWSW-U DIG1 CN9-20 DUPESW CN9-11 SSW1 SOURCE CN4-6 CN1-49 PWSW-U DIG0 CN1-29 R175 R180 DUPRSW PWSW-U DIG0 CN9-19 DUPRSW CN9-7...
Page 566 Engine PCB 2A3/4 IC16 FCL5 CN1-107 CN12-A2 FCL5 CN1-65 CN19-B8 CN1-101 CN3-B2 IC16 FCL1 CN1-106 CN12-A4 FCL1 CN1-23 CN1-66 CN19-B7 IC16 FCL2 CN1-105 CN12-A8 FCL2 IC13 IC16 CN1-135 CN19-B6 FCL3 CN1-104 CN12-A10 FCL3 MAIN 5 V CN1-12 – IC17 CN1-136 CN19-B5 SRM A CN1-123...
Page 567 Main PCB 2A3/4 IC52 R507 R508 SCANNER START R503 R504 × D SCANNER TR28 IC52 R505 TR25 R506 ENGHEAD – SCAN SC TIM SCANNER ACK TR27 TR26 RA85 SCAN HEAD – × D SCANNER TR22 RA84 OCM ENABLE CN13 – –...
Page 568 Main PCB 2A3/4 R211 R210 C131 C132 R233 VO_O CN12–7 R212 R232 C133 R220 R234 IC18 VO_O– CN12–6 – C134 R219 C146 R213 R235 VO_E CN12–5 R236 R222 IC17 R239 VO_E– CN12–4 – R223 R225 R226 C149 IC27 R214 R191 RA10 SM Vref CN5–4...
Page 569 Main PCB 2A3/4 RA59 SD27 IO27 SD26 IO26 SD25 IO25 SD24 IO24 SD23 IO23 SD22 IO22 SD21 IO21 SD20 IO20 RA57 RA58 IC42 L151 RA56 SA213 IS213 C204 SA212 IS212 R339 IS20 RA55 IS21 SA211 IS211 IS22 SA210 IS210 IS23 IO20 I/O0 SA29...
Page 570 2A3/4 Main PCB L143 L140 5.1 V CN10-4 R490 5.1 V CN10-1 L144 G(5 V) CN10-3 L141 12 V CN10-6 L142 CN10-7 G(ANALOG) TR24 R483 R407 R499 R342 R124 IC38 VOUT R489 R497 3-7-13 3-7-20 KM-4230/5230 (MCE)
Page 571 Main PCB 2A3/4 IC10 IC12 IC12 IC10 R120 TR32 R123 R122 × × CN6–5 D MMI 2B 5 R121 ENGHEAD–SCAN TR31 1B 2 L108 2B 5 R151 _WRDY M1 × D MMI CN6–2 _RRDY M1 IC10 1B 2 ENGACK–SCAN _WRDY M2 TR30 _RRDY M2 PRTACK...
Page 572 Main PCB 2A3/4 – H2 REM – H1 REM – IFFM REM – CL REM – FSSOL 2 REM – FSSOL 1 REM – PCFM REM L200 – RCL REM – L202 TLDS – – PFM LOCK C271 IC67 – SC REM C272 –...
Page 573 Main PCB 2A3/4 IC70 _DE1 L225 _DE2 CN15-3 A0_IPC RA103 L226 L245 L247 CN15-18 A1_IPC L107 L131 L158 L130 L246 L227 CN15-4 A2_IPC L228 CN15-19 A3_IPC IC12 IC21 IC32 IC46 IC22 L229 CN15-5 A4_IPC L230 CN15-20 A5_IPC R492 R493 R176 R273 R322 R179...
Page 574 Main PCB 2A3/4 IC16 SELMCP2_ SELMCP1_ L139 IC36 – PVSYNC_ PVSYNC M2 PHSYNC_ – PHSYNC M2 C156 C155 R128 – _MCPSEL M2 _RRES RA37 R253 _WRES L221 5 6 7 8 L222 RA39 L223 L224 4 3 2 1 – MCPCLK M2 RA38 MCPMREW M2...
Page 575 Main PCB 2A3/4 SLEEP R129 IC25 _M2OE RA20 M2SEL SID0M SID1M SID0M CN3-B8 M2 DATA0 SID2M SID1M SLEEP IC17 SID3M SID2M × CN3-B9 M2 DATA1 × CN3-A2 D MCP2 MCP2 IC35 SID3M 8 7 6 5 CN3-A6 ENCACK MCP2 CN3-B10 M2 DATA2 MACK MCP2 RA19...
Page 576 Memory copy PCB 2A3/4 VCC3 PCN12A-32P-2.54DS _MCPSEL MCP2AC(304:1) (003-15A) iMCPSEL_ _RVST iPVST_ iPHSYNC_ _PHSYNC GPL5 GPL5 iTXDMCP TXDMCP (002-15I) iACKMCP ACKMCP iRREADY_ _R_READY iWREADY_ _W_READY GPL5 iRCK2 (011-13F) iMREVDOUT MREVD iVD1 _VD1 iVD2 _VD2 RA19 _SETMCP VPL5 iSETMCP_ ACKENG iACKENG TXDENG iTXDENG (002-15I)
Page 577 Memory copy PCB 2A3/4 VPL5 VPL5 MCP 2AC (304:1) (003-15A) TP8 TP7 TP9 VPL5 VPL5 SIZE1 SIZE0 VPL5 DSACY VPL5 VPL5 CPUCLK (011-13I) VPL5 RST_ GPL5 (011-13C) GND12 VCC12 DSACK1_ DSACK0_ VCC7 GND8 GPL5 RA35 GND13 VCC13 VCC6 A (31:0) GND7 $001 RA43...
Page 578 Memory copy PCB 2A3/4 MCP2AC (304:1) $004 VCC3 VDD26 VDD17 VDD27 VDD16 SMLLD DRAMD24 SMLDEB DRAMD23 SMGHDEB DRAMD25 SMGLDEB DRAMD22 SMGDIP GND26 VDD28 VDD15 SRAS30B DRAMD26 SRAS31B DRAMD21 SRAS32B DRAMD27 SRAS33B DRAMD20 SCAS30B GND25 SCAS31B VDD14 GND47 DRAMD28 RAMCSHB DRAMD19 RAMCSLB DRAMD29 RAMDEB...
Page 579 Memory copy PCB 2A3/4 CPUD (15:0) SD (15:0) $001 A (31:0) (002-15F) MCP2AC (304:1) (003-15A) VPL5 VPL5 RA17 RA18 GND1 GND2 GPL5 VPL5 GPL5 GPL5 CPUD0 CPUD1 CPUD2 CPUD3 CPUD4 CPUD5 CPUD6 CPUD7 CPUD8 CPUD9 CPUD10 CPUD11 CPUD12 CPUD13 CPUD14 CPUD15 RA52 GPL5...
Page 580 Memory copy PCB 2A3/4 MCP2AC (304:1) RA63 (003-15A) LSA1 (10:0) SM1D8 SM1D0 SM1A0 SM1D24 SM1D16 SM1A1 RA62 SM1D9 SM1D1 SA10 SM1A2 SM1D25 SM1D17 SM1A3 SM1D10 SM1D2 SM1A4 RA61 SM1D26 SM1D18 SM1A5 SM1D11 SM1D3 SM1A6 SM1D27 SM1D19 SM1A7 SM1D12 SM1D4 SM1A8 SM1D28 SM1D20 SM1A9...
Page 581 Memory copy PCB 2A3/4 MCP2AC (304:1) RA85 (003-15A) LSA2 (10:0) SM2D8 SM2D0 SM2A0 SM2D24 SM2D16 SM2A1 RA84 SM2D9 SM2D1 SA10 SM2A2 SM2D25 SM2D17 SM2A3 SM2D10 SM2D2 SM2A4 RA83 SM2D26 SM2D18 SM2A5 SM2D11 SM2D3 SM2A6 SM2D27 SM2D19 SM2A7 SM2D12 SM2D4 SM2A8 SM2D28 SM2D20 SM2A9...
Page 582 Memory copy PCB 2A3/4 VPL5 VPL5 VPL5 VPL5 VPL5 VPL5 VPL5 VPL5 MCP2AC (304:1) DD (31:0) QDD (31:0) RA60 RA72 DRAMD24 DRAMD23 DRAMD25 DRAMD22 RA57 RA73 DRAMD26 DRAMD21 DRAMD27 DRAMD20 VSS1 VSS1 VSS1 VCC1 VCC1 VCC1 RA55 RA74 VSS2 VSS2 VSS2 DRAMD28 VCC2...
Page 583 Memory copy PCB 2A3/4 QSD (31:0) (009-15B) MCP2AC (304:1) (003-15A) SIMMD (31:0) $002 Q1CDRQ RA105 RA69 RA103 Q1CDWR_ Q1CDRD_ Q1CDACK_ CDAK VDD11 CDRD CDWR Q1HINTR RA101 INTR VDD17 CPUD (15:0) $001 GND18 GND11 VDD10 RA98 VPL5 VDD18 GND10 GND19 VDD9 RXCKD RVID SVID...
Page 584 Memory copy PCB 2A3/4 MCP 2AC (304:1) (003-15A) SIMMD (31:0) (008-09A) VPL5 178 Q2CDRQ VPL5 RA66 Q2HINTR Q2PDRD Q2CDRD RA82 181 Q2CDWR_ 180 Q2CDRD_ 179 Q2CDACK_ CDAK VDD11 CDRD CDWR 173 Q2HINTR INTR CPUD (15:0) VDD17 $001 GND18 GND11 VDD10 VPL5 VDD18 GND10...
Page 585 Memory copy PCB 2A3/4 VPL5 SIMMD (31:0) BSD (31:0) BCD (15:0) CPUD (15:0) $001 $002 RA97 RA86 RA95 RA89 RA92 RA87 RA90 RA88 RA96 RA94 RA93 RA91 MCP 2AC (304:1) (003-15A) RA56 235 SMGDIR 234 SMGLOE_ 233 SMGHOE_ GPL5 $001 SIMMD (005-14H) (006-14H) (008-16B) $002 CPUD (002-02H) (004-03A) (008-01D)
Page 586 Memory copy PCB 2A3/4 VPL5 MCP 2AC (304:1) (003-15A) RST_ VPL5 RST_ RES_ $001 OUTC VSB-RI_ VCC3 reset at 2.07V GPL5 GPL5 GPL5 iRESET_ (001-13F) VCC3 VPL5 VCC3 MCP 2AC (304:1) (003-15A) RCKEN MCP 2AC (304:1) (003-15A) iRCK2 (001-13D) GPL5 VCC3 VPL5 VPL5...
Page 587 Memory copy PCB 2A3/4 VCC3 VPL5 VPL5 VPL5 VPL5 VCC3 VCC3 GPL5 GPL5 GPL5 GPL5 GPL5 GPL5 GPL5 GPL5 VPL5 VCC3 VPL5 B2P-VH VOUT E 5.1 V G (5 V) GPL5 GPL5 GND1 GND2 GND3 GND4 GPL5 GPL5 GPL5 GPL5 GPL5 GPL5 GMI5...
Page 588 Scanner motor PCB 2A3/4 SHPSW CN4-2 CN1-2 SHPSW NO MOUNT Vref SM Vref CN1-13 CN2-4 SM A SM M1 CN1-12 CN2-6 SM _A SM M2 CN1-11 CN2-3 SM B SM M3 CN1-10 SM _B CN2-1 SM M4 CN1-9 SM M5 CN1-8 SM CLK CN1-7...
Page 589 CP_CLP_EVEN SH_out SH_in CP_CLP_ODD ΦCLP – CN1-6 CP_ROC VOUT_EVEN ΦSHIFT + CN1-7 VOUT_ODD ΦSHIFT – CN1-8 CN1-9 CN1-10 CN1-11 VO_O + CN2-1 VREF CN2-2 VO_O– CN2-3 VO_E+ CN2-4 VO_E– VREF CN2-5 +12V CN2-6 G(Analog) CN2-7 G(Analog) 3-7-14 3-7-39 KM-4230/5230 (MCE)
Page 590 OFM ACOM 24 V (VEN) CN6-B8 CN5-B11 24 V CN5-B2 OFM BCOM 24 V (VEN) CN6-A7 OFM ENABLE CN2-14 CN6-A10 CN6-A13 CN6-B3 CN6-B6 CN6-A1 N.C. CN6-A4 CN6-A2 N.C. CN6-B12 DF SHORT CN3-11 CN6-A3 N.C. CN6-B15 CN3-14 N.C. 3-7-15 3-7-40 KM-4230/5230 (MCE)
Page 591 Operation unit main PCB 2A3/4 R111 CN4-1 Y2 (IN) IC15 MMI ERROR CN6-5 CN4-3 Y1 (OUT) R142 ENG ERROR MMI CN6-4 R144 IC13 IC13 R147 IC15 MMI ACK CN6-9 CN4-4 X2 (IN) ENG ACK MMI CN6-6 CN4-2 X1 (OUT) IC13 IC13 _RAM CN6-1...
Page 592 R130 R136 CN1-11 IC17 R129 F138 HC14 LS07 R135 CN1-12 IC17 R133 R139 IC17 CN1-6 R132 R138 _LCD _WR _RD _VRAM IC17 CN1-5 R172 R174 IC17 CN1-4 R171 R173 CN1-3 IC17 G (5 V) CN1-8 CN1-13 3-7-16 3-7-42 KM-4230/5230 (MCE)
Page 593 DIG KEY_R2 CNB-2 DIG KEY_R3 CNB-3 KEY11 KEY15 KEY19 KEY23 DIG KEY_R4 CNB-4 SCAN_R1 CNB-5 SCAN_R2 CNB-6 SCAN_R3 CNB-7 SCAN_R4 CNB-8 BUZZER CNB-13 CNB-14 DIG LED_R1 CNB-9 DIG LED_R2 CNB-10 DIG LED_R3 CNB-11 DIG LED_R4 CNB-12 3-7-17 3-7-43 KM-4230/5230 (MCE)
Page 594 SCAN_L3 CNA-10 CNA-16 CNA-18 DIG LED_L1 CNA-11 DIG LED_L2 CNA-12 DIG LED_L3 CNA-13 DIG LED_L4 CNA-14 CNA-17 CNC-1 CNC-4 CNA-4 CNT. VR – CNA-2 23 V 24 V CNA-1 CFL REM CNA-15 G (24 V) CNA-3 3-7-18 3-7-44 KM-4230/5230 (MCE)
Page 595 Deck main PCB 2A3/4 UPSW1 UPSW2 IC9.3 IC6.6 PDMSENS2 24 V IC6.1 CN1-7 DLSW1 PDMSENS1 +24 V CN12-1 CN1-8 UPSW1 IC6.4 IC6.2 CN12-2 CM PWM CN12-3 CN1-9 DLSW2 GROUND +5 V CN12-4 IC6.5 CN1-10 UPSW2 CM CLK CN12-5 CN4-7 5 V IC6.3 CN4-8 SG GROUND...
Page 596 Interface PCB 2A3/4 +5 V +5 V +24 V CN3-1 +5 V CN3-2 CN3-3 DLSW1 CN3-4 +5 V CN3-5 CN3-6 UPSW1 CN3-7 +5 V CN3-8 CN3-9 DLSW2 CN3-10 +5 V CN3-11 CN3-12 UPSW2 +24 V CN1-1 +24 V CN1-2 CN4-1 +5 V CN1-3 CN4-2...
Page 597 24 V CN A-1 CN1-1 24 V CN A-2 Unused pins CN1-2 CN A-3 CN1-3 CN A-4 CN1-5 CN1-4 CN A-5 CN1-7 CN1-6 CN A-6 CN1-8 CN2-4 CN2-5 CN A-7 CN1-9 CN A-8 CN3-14 CN1-10 CN A-9 CN6-A1 CN A-10 CN6-A2 CN A-11 DFTSW...
Page 598: General Connection Diagram (42 Ppm Copier)
General connection diagram (42 ppm copier) 2A3/4 Fixing unit – Phase control circuit 850W – 850W OSD2 OSD1 – INPCB SHPSW ODSW NEUTRAL L. BLUE SRDF 220-240 V LIVE BROWN TB 4 NEUTRAL NEUTRAL WHITE TB 2 – NEUTRAL 23or24 23or24 120 V LIVE...
Page 599: General Connection Diagram (52 Ppm Copier)
2A3/4 General connection diagram (52 ppm copier) Fixing unit – Phase control circuit 850W – 850W – OSD2 OSD1 INPCB SHPSW ODSW NEUTRAL L. BLUE 220-240 V SRDF LIVE BROWN TB 4 NEUTRAL NEUTRAL WHITE TB 2 – NEUTRAL 23or24 23or24 120 V LIVE...
Page 600: Srdf Wiring Diagram
SRDF wiring diagram 2A3/4 Mi2 (12P) RED Mi2 (11P) RED Mi2 (12P) WHITE Mi2 (11P) WHITE C7-1 GN C7-2 GN DFDPCB C5-B11 GY 24 V OFSOL C5-B12 GY OFSOL1 (CN3) (CN2) C5-B13 GY (CN1) (CN6) OFSOL2 C7-4 B-15 C7-5 (CN5) B-14 C7-6 C15-3 GY...
Page 601: Large Paper Deck Wiring Diagram
Large paper deck wiring diagram 2A3/4 +5 V CN-1 DLSW1 CN-3 SGND CN-2 DLSW1 CN-1 G (5 V) CN-2 G (24 V) +5 V CN-1 +5 V CN3-1 CN-3 CN3-1 DLSW1 CN3-3 UPSW1 CN-3 CN3-2 G (5 V) CN-4 24 V SGND CN3-2 SGND...
Page 602 Av. 16 de Septiembre #407 Col. Santa Inés, Delegación Azcapotzalco México, D.F. C.P. 02130 TEL : 3-83-27-41 FAX : 3-83-78-04 ©2000 KYOCERA MITA CORPORATION is a registered trademark of Kyocera Corporation is a registered trademark of KYOCERA MITA CORPORATION Printed in U.S.A.

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