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Mita PointSource Ai 1515 Service Manual

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PointSource
Ai 1515
SERVICE
MANUAL
Published in Dec. '98
19070763
Revision 3
PointSource Ai1515 (MCA) S/M

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  • Page 1 PointSource Ai 1515 SERVICE MANUAL Published in Dec. ’98 19070763 Revision 3 PointSource Ai1515 (MCA) S/M...
  • Page 2 SERVICE MANUAL PointSource Ai 1515...

  • Page 3: 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 4: Safety Warnings And Precautions

    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 5: 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 6: Precautions For Maintenance

    • 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 7 •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 8 • 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 9 190-1 CONTENTS THEORY AND CONSTRUCTION SECTION 1-1 Specifications 1-1-1 Specifications ................1-1-1 1-2 Handling Precautions 1-2-1 Handling and storing the imaging unit ........... 1-2-1 1-2-2 Storing 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 ..............
  • Page 10 190-1 3-6 Troubleshooting 3-6-1 Image formation problems ............3-6-1 3-6-2 Paper misfeeds ................3-6-14 3-6-3 PCB terminal voltages ..............3-6-17 3-6-4 Electrical problems ..............3-6-31 3-6-5 Mechanical problems ..............3-6-39 3-7 Appendixes Timing chart No. 1 ..................3-7-1 Timing chart No. 2 ..................3-7-2 Timing chart No.

  • Page 11: Specifications

    CONTENTS 1-1 Specifications 1-1-1 Specifications ..................1-1-1 1-1-3...
  • Page 12 190-1 1-1-1 Specifications Type …………………………… Desktop Copying system ……………… Dry indirect electrostatic system Originals ……………………… Sheet and books Maximum size: A3/11" × 17" Original feed system ………… Fixed Copy paper …………………… Plain paper: 80 g/m (metric) for drawer feed 75 g/m (inch) for drawer feed 45 –...
  • Page 13 Developing system …………… Dry, reverse developing (magnetic brush) Developer: 2-component, ferrite carrier and N26T black toner Toner density control: toner sensor Toner replenishment: toner cartridge replacement Transfer system ……………… Transfer roller Separation system …………… Curvature separation Fixing system ………………… Heat roller Heat source: halogen heater (850 W) Control temperature: 165°C/329°F (at ambient temperature)
  • Page 14 CONTENTS 1-2 Handling Precautions 1-2-1 Handling and storing the imaging unit ..........1-2-1 1-2-2 Storing toner ..................1-2-1 1-1-5...
  • Page 15 1-2-1 Handling and storing the imaging unit Note the following when handling or storing the imaging unit. • When removing the imaging unit, never expose the drum surface to strong direct light. • Keep the unit 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 16: Mechanical Construction

    CONTENTS 1-3 Mechanical Construction 1-3-1 Parts names and their functions ............1-3-1 1-3-2 Machine cross section ................ 1-3-3 1-3-3 Drive system ..................1-3-4 1-3-4 Mechanical construction ..............1-3-6 (1) Paper feed section ..............1-3-6 (1-1) Paper feed from the drawer ..........1-3-8 (1-2) Paper feed from the bypass table ........
  • Page 17 1-3-1 Parts names and their functions ⁄ & Figure 1-3-1 1 Original holder 8 Fixing unit felt % Front cover 2 Operation panel 9 Contact glass ^ Toner cartridge 3 Main switch 0 Original size indicators & Toner cartridge handle 4 Drawer ! Bypass table * Imaging unit...
  • Page 18 Inch Error Function On-Line Preset Original Paper Size Sort Zoom ( ) Zoom( ) Manual Select Select Copy Half Lighter Darker Tone Start Stop/ Reset Clear 54 6 & Metric 200% 54 6 & Figure 1-3-2 Operation panel 1 Message display 8 Zoom-up key % Half tone key 2 Error indicator...

  • Page 19: Machine Cross Section

    1-3-2 Machine cross section Light path Paper path Figure 1-3-3 Machine cross section 1 Paper feed section (page 1-3-6) 2 Main charging section (page 1-3-10) 3 Optical section (page 1-3-12) 4 Developing section (page 1-3-19) 5 Transfer section (page 1-3-24) 6 Cleaning section (page 1-3-26) 7 Charge erasing section (page 1-3-27) 8 Fixing and eject section (page 1-3-29)

  • Page 20: Drive System

    1-3-3 Drive system ´ · ‚ Œ „ ° ‡ % fl & ‹ ⁄ fi › ¤ As viewed from machine rear Figure 1-3-4 Drive system (copier main body) 1 Drive motor pulley * Joint idle gear 27 2 Main drive belt ( Fixing idle gear 22 3 Idle pulley 110/22 ) Heat roller gear...
  • Page 21 190-1 As viewed from machine front Figure 1-3-5 Drive system (front side of the imaging unit) 4 Cleaning spiral gear 1 Left developing spiral gear 5 Front drum gear 2 Middle developing spiral gear 3 Cleaning idle gear As viewed from machine rear Figure 1-3-6 Drive system (rear side of the imaging unit) 1 Rear drum gear 4 Right developing spiral gear...
  • Page 22 1-3-4 Mechanical construction (1) Paper feed section ¤ ⁄ & › ‹ fl ‡ ° · fi 9 ‚ !7 65 2 Figure 1-3-7 Paper feed section 1 Bypass table ^ Registration spring 2 Bypass lift & Pre-transfer guide 3 Bypass paper feed pulley * Transfer roller 4 Bypass lift cam ( Post-transfer guide...
  • Page 23 The paper feed section consists of the primary feed and secondary feed subsections. Primary feed conveys paper from the drawer or bypass table to the right and left registration rollers, at which point secondary feed takes place and the paper travels to the transfer section in sync with the printing timing.
  • Page 24 (1-1) Paper feed from the drawer The drawer consists of the drawer lift and drawer spring. The drawer can hold up to 250 sheets of paper. Paper is fed from the drawer by the rotation of the paper feed pulley. Print signal: on Start key PVSYNC signal...
  • Page 25 (1-2) Paper feed from the bypass table The bypass table can hold up to 50 sheets of paper. When the start key is pressed, the bypass paper feed clutch (BYPPFCL) turns on and the bypass paper feed pulley rotates to convey the paper on the bypass table to the secondary paper feed section.
  • Page 26 (2) Main charging section The main charging section consists of the drum and main charger. The main charger charges the drum so that a latent image is formed on the surface, the charger grid ensuring that the charge is applied uniformly. Main charger grid Main charger wire Main charger...
  • Page 27 At least 500 ms and after the laser diode is turned on. Start key MC REM 100 ms 100 ms GRID CONT 100 ms 100 ms 150 ms 100 ms DB CONT 150 ms 3800 ms Timing chart 1-3-3 Main charging A At least 500 ms after the drive motor (DM) is turned on by pressing the start key and after the laser diode is turned on, main charging (MC REM) starts.
  • Page 28 (3) Optical section The optical section consists of the scanner, mirror frame and image scanning unit for scanning and the laser scanner unit (LSU) for printing. Figure 1-3-11 Optical section 1 Scanner 8 Image scanning unit 2 Mirror frame 9 Lens 3 Mirror 1 0 Optical rail 4 Mirror 2...
  • Page 29 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 on the optical rails on the front and rear of the machine unit to scan from side to side.
  • Page 30 Scan signal Fwd. rotation 560 – 800 P 992 P 40 ms 100 ms Rev. rotation 2500 P 120 ms 50 ms 20 ms SVSYNC During scan: 446 – 686 pulses During copy: 398 – 638 pulses SHPSW D E F Timing chart 1-3-4 Scanner operation (for an original on the contact glass) A When the start key is pressed and the scan signal turns on, the scanner motor (SM) reverses for 560 to 800 pulses and the exposure lamp (EL) lights to scan the data for...
  • Page 31 Scan signal Fwd. rotation 992 P 560 – 800 P 58 – 154 P Rev. rotation 2500 P 150 P Fwd. rotation 50 ms Rev. rotation 120 ms 50 ms 20 ms SVSYNC During scan: 200 – 520 pulses During copy: 168 – 488 pulses 75 –...
  • Page 32 Image printing The image data scanned by the CCD PCB (CCDPCB) is processed in the engine PCB (EPCB) 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 static latent image on the drum surface.
  • Page 33 Drum Figure 1-3-14 Laser scanner unit (2) 1 Laser diode: Generates the laser beam which forms a latent image on the drum. 2 Collimator lens: Collimates the diffused laser beam emitted from the laser diode to convert it into a cylindrical beam. 3 Cylindrical lens: Shapes the collimated laser beam to suit the printing resolution.
  • Page 34 The dimensions of the laser beam are as shown in Figure 1-3-15. 70 µm 65 µm Figure 1-3-15 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 35 (4) Developing section Toner cartridge Toner hopper spiral Imaging unit Figure 1-3-17 Developing section The developing section consists of the developing roller where a magnetic brush is formed, the doctor blade and the developing spirals that agitate the developer. 1-3-19...
  • Page 36 Magnetic brush forming The developing roller consists of a magnetic roller having five poles and the sleeve roller. The revolution of the sleeve roller around the magnetic roller entrains the developer, which in turn forms a magnetic brush at pole N1 on the magnetic roller. The height of this magnetic brush is regulated by the doctor blade, while the developing result is affected by the positions of the magnet roller poles and the doctor blade.
  • Page 37 TFM1 CN9-18 TFM2 CN9-19 5 V DC CN9-20 CN9-21 CN9-6 Developing bias DB CHG CN8-10 CN1-6 DB CONT CN8-11 CN1-5 EPCB HVTPCB Figure 1-3-19 Developing section block diagram Toner density is detected by the toner sensor (TNS). As the developer passes by the sensor section of the toner sensor, the toner sensor detects the ratio of toner to carrier in the developer and converts it into a voltage.
  • Page 38 Toner density control When the imaging unit is installed, the toner feed motor is turned on and off to control toner density based on the specified toner control voltage. Toner empty in the toner hopper is also detected based on the toner sensor output voltage. Toner empty Toner sensor (toner cartridge replaced)
  • Page 39 E No copying: The toner sensor output voltage is above the no-copying level (3.3 V DC). When the toner sensor output voltage remains above the no-copying level for 540 ms, copying is disabled. F Toner empty exited: The toner sensor output voltage is below the toner empty exit level (2.4 V DC).
  • Page 40 190-1 (5) Transfer section Transfer roller Transfer toner removal blade Figure 1-3-21 Transfer section The transfer section consists of the transfer roller and transfer toner removal blade. A high voltage generated by the transfer high-voltage transformer PCB (HVTPCB) is applied to the transfer roller mounted under the drum. The transfer toner removal blade removes the residual toner on the transfer roller.
  • Page 41 Secondary paper feed start 500 ms 300 ms 5 – 105 ms 130 – 190 ms* 230 – 290 ms* PVSYNC 650 ms 470 ms TC REM *1 During paper feed from the drawer/special cassette *2 During paper feed from the bypass table Timing chart 1-3-6 Transfer A 470 ms after the PVSYNC signal turns on, transfer charging (TC REM) starts.
  • Page 42 (6) Cleaning section Figure 1-3-23 Cleaning section 1 Drum 2 Cleaning blade 3 Cleaning spiral 4 Lower cleaning seal The cleaning section consists of the cleaning blade that removes residual toner from the drum surface after the transfer process and the cleaning spiral that carries the residual toner back to the waste toner tank.
  • Page 43 (7) Charge erasing section Cleaning lamp Figure 1-3-24 Charge erasing section The cleaning lamp (CL) consists of 10 LEDs which remove residual charge from the drum surface. CL REM CN5-17 Drum EPCB Figure 1-3-25 Charge erasing block diagram 1-3-27...
  • Page 44 At least 500 ms and after the laser diode is turned on. Start key MC REM 100 ms 1200 ms GRID CONT 100 ms 100 ms 100 ms 100 ms 150 ms DB CONT 150 ms 3800 ms Timing chart 1-3-7 Charge erasing A After the start key is pressed, the drive motor (DM) turns on and, at the same time, the cleaning lamp (CL) lights to remove the residual charge from the drum surface after the residual toner is removed in the cleaning section.
  • Page 45 (8) Fixing and eject section The fixing and eject section consists of the parts shown in Figure 1-3-26. When paper reaches the fixing section after the transfer process, it passes between the press roller and heat roller, which is heated by the fixing heater (H). Pressure is applied by the fixing pressure springs so that the toner on the paper is melted, fused and fixed onto the paper.
  • Page 46 PSPCB Heat roller CN2-1 CN2-2 EPCB Figure 1-3-27 Fixing section block diagram 1-3-30...
  • Page 47 Heating the heat roller and detecting temperature Figure 1-3-28 Heating the heat roller and detecting temperature 1 Heat roller 2 Fixing heater (H) 3 Fixing unit thermostat 1 (TH1) 4 Fixing unit thermostat 2 (TH2) 5 Fixing unit themistor (FTH) The heat roller is heated by the fixing heater (H) inside it;...
  • Page 48 Fixing temperature control MSW: On 60 s Approx. High 1°C/1.8°F temperature Preheat mode 190°C/374°F Approx. Secondary 1°C/1.8°F stabilization fixing 165°C/329°F Approx. temperature 1°C/1.8°F Preheat 150°C/302°F temperature 120°C/248°F Primary stabilization fixing temperature DB REM 100 ms 100 ms 5 – 15 s Full speed Half speed 0 –...
  • Page 49 Paper separation Paper is separated in the fixing section by the separation claws as shown in Figure 1-3-29. Heat roller separation claws Heat roller Figure 1-3-29 Paper separation 1-3-33...

  • Page 50: Electrical Parts Layout

    CONTENTS 2-1 Electrical Parts Layout 2-1-1 Electrical parts layout ................2-1-1 1-1-9...
  • Page 51 2-1-1 Electrical parts layout Machine front Machine inside Machine rear Figure 2-1-1 PCBs 1. Main PCB (MPCB) ..........Controls the other PCBs; modulates and demodulates image signals. 2. Power source PCB (PSPCB) ......Generates 24 V DC, +12 V DC, –12 V DC, 5 V DC and 75 V AC.
  • Page 52 190-1 6 7 8 Machine front Machine inside Machine rear Figure 2-1-2 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; resets paper jam detection.
  • Page 53 11. Bypass paper size switch (BYPPSSW) ....Detects the size of paper on the bypass table. 12. Original detection switch (ODSW) ...... Operates the original size switch. 13. Original size switch (OSSW) ....... Detects the size of the original on the contact glass.
  • Page 54 Machine front Machine inside Machine rear Figure 2-1-3 Motors and clutches 1. Drive motor (DM) ..........Drives the machine. 2. Scanner motor (SM) ..........Drives the scanner. 3. Toner feed motor (TFM) ........Replenishes toner. 4. Cooling fan motor 1 (CFM1) ....... Cools the machine interior. 5.
  • Page 55 Machine front Machine inside Machine rear Figure 2-1-4 Others 1. Exposure lamp (EL) ..........Exposes originals. 2. Cleaning lamp (CL) ..........Removes residual charge from the drum surface. 3. Fixing heater (H) ..........Heats the heat roller. 4. Fixing unit thermostat 1 (TH1) ......Prevents overheating in the fixing section.
  • Page 56 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 1-1-11...

  • Page 57: Paper Misfeed Detection

    2-2-1 Paper misfeed detection When a paper jam occurs, the copier immediately stops copying and displays a message and graphic indicating the jam location on the operation panel. To remove the jammed paper, open the drawer, right side cover or eject cover as necessary. To reset the paper misfeed detection, open and close each cover to turn the safety switch off and on.

  • Page 58: Paper Misfeed Detection Conditions

    2-2-2 Paper misfeed detection conditions • Either the registration switch (RSW) or eject switch (ESW) is on when the main switch is turned on. • The registration switch (RSW) does not turn on within 2000 ms after the paper feed clutch (PFCL) turns on.
  • Page 59 • The eject switch (ESW) does not turn off within 3700 ms after the registration clutch (RCL) turns off. 3700 ms Timing chart 2-2-4 • The registration switch (RSW) does not turn off within the specified time [depending on the paper size (see Table 2-2-1)] after the registration clutch (RCL) turns on. Specified time Timing chart 2-2-5 Table 2-2-1...
  • Page 60 CONTENTS 2-3 Operation of the PCBs 2-3-1 Power source PCB ................2-3-1 2-3-2 Main PCB .................... 2-3-3 2-3-3 Engine PCB ..................2-3-4 2-3-4 Motor PCB ..................2-3-6 2-3-5 Operation unit PCB ................2-3-7 1-1-13...

  • Page 61: Power Source Pcb

    2-3-1 Power source PCB PSPCB Rectifier circuit 15 V DC 75 V AC 75 V AC output 24 V DC circuit switching 75 V AC IC9, 10 control Noise Switching circuit filter control circuit circuit –12 V DC –12 V DC output circuit +12 V DC...
  • Page 62 The power source PCB (PSPCB) is a switching regulator that generates 5 V DC, ±12 V DC, 24 V DC and 75 V AC (15.3 to 20 Hz) from the AC supply. It consists of the noise filter circuit, rectifier circuit, switching control circuits, –12 V DC output circuit, +12 V DC output circuit, 24 V DC output circuit, 5 V DC output circuit, 24 V DC switching control circuit, 75 V AC output circuit and fixing heater control circuit as shown in Figure 2-3-1.
  • Page 63 190-1 2-3-2 Main PCB Backup battery Backup Lithium Backup Operation circuit 2 battery circuit 1 unit PCB To CPU DRAM Flash SRAM work and memory image memory Memory board (option) 8 bits 4 bits 16 bits 16 bits 16 bits 16 bits 8 bits (AD bus)

  • Page 64: Engine Pcb

    2-3-3 Engine PCB Reset RESET circuit IC36 Analog IC34 Address bus circuit Data bus IC24 converter EEP- IC21 Abnormally IC38 high temperature FIFO detection circuit IC35 FIFO Driver Driver MPCB CFM1 IC17 CFM2 IC40 PFCL Driver BYP- PFCL etc. Switches, sensors Figure 2-3-3 Engine PCB block diagram The engine PCB (EPCB) controls the machine drive system and the inputting and printing...
  • Page 65 SHD IC35 and VTC IC40 control the inputting and printing of image data. SHD IC35 generates the CCD drive signal and corrects non-linearity of the CCD output (image data from the CCDPCB) and VTC IC40 controls printing by outputting the binary image data from the main PCB (MPCB) to the laser scanner unit (LSU).

  • Page 66: Motor Pcb

    2-3-4 Motor PCB 24 V DC MOTSEL 24 V DC 24 V DC MOT A Stepping MOT _A motor MOT B driver MOT _B SMREF Figure 2-3-4 Motor PCB block diagram The motor PCB consists of the stepping motor driver IC (IC3) and 24 V DC supply circuit with transistors TR1 and TR2.

  • Page 67: Operation Unit Pcb

    2-3-5 Operation unit PCB Source Scan signals signals Key switch matrix matrix circuit Return Scan circuit signals signals Address bus Data bus Main RESET Reset signal controller circuit SRAM Negative supply generation circuit IC5 Figure 2-3-5 Operation unit PCB block diagram The operation unit PCB consists of CPU IC1, ROM IC3, LCD controller IC4, SRAM IC6, the LED matrix circuit, the key switch matrix circuit, the reset circuit and the negative supply generation circuit.
  • Page 68 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 ..............3-1-13 3-1-3 Installing the ISU heater (option) ............3-1-14 1-1-15...

  • Page 69: Unpacking And Installation

    3-1-1 Unpacking and installation (1) Installation environment 1. Temperature: 10 – 35°C/50 – 95°F 2. Humidity: 15 – 85% RH 3. Power supply: 120 V AC, 8.3 A 220 – 240 V AC, 2.3 A 4. Power source frequency: 50 Hz ± 0.3%/60 Hz ± 0.3% 5.
  • Page 70 (2) Installation procedure Start Unpack. Remove the pins. Remove the tapes. Remove the drawer spacers. Remove the fixing unit spacers. Install the imaging unit. Install the fixing unit felt. Connect the power plug. Initialize the imaging unit. Install a toner cartridge. Clean the main charger.
  • Page 71 Fixing unit felt Pin holding the scanner Fixing unit spacers Pin holding the mirror frame Drawer spacers Figure 3-1-2 3-1-3...
  • Page 72 Unpack. › & ⁄ ¤ ‹ Figure 3-1-3 Unpacking 1 Front top pads $ Hinge joints 2 Rear top pads % Imaging unit 3 Copier ^ Top spacer 4 Machine cover & Accessory case 5 Operation unit spacer * Power cord 6 Bottom machine cover ( Partition 7 Bottom pads...
  • Page 73 Imaging unit Figure 3-1-4 Unpacking the imaging unit 1 Leaflet 5 Imaging unit 2 Fixing unit felt 6 Bottom pads 3 Upper pads 7 Bar code label 4 Light-proof sheet 8 Case 9 Plastic bag 3-1-5...
  • Page 74 Remove the pins. 1. Remove the tapes and the two pins holding the scanner and the pin holding the mirror frame on the left cover. Pin holding the mirror frame Pins holding the scanner Figure 3-1-5 Remove the tapes. 1. Remove the two tapes holding the front and right covers. 2.
  • Page 75 Remove the drawer spacers. 1. Open the drawer and remove the tape holding the width guide. 2. Remove the tapes and the two drawer spacers. Drawer spacers Tape Drawer Width guide Figure 3-1-7 3. Close the drawer. Remove the fixing unit spacers. 1.
  • Page 76 Install the imaging unit. 1. Take the imaging unit out of the package and remove the light-proof sheet. Imaging unit Light-proof sheet Tapes Figure 3-1-9 2. Open the front cover. 3. Turn the imaging unit release lever to the right. The right side cover opens slightly when the release lever is turned to the right.
  • Page 77 5. Hold the imaging unit handle and upper handle and insert the imaging unit into the copier, aligning it with the guide rail. Imaging unit Figure 3-1-11 6. Lock the imaging unit by turning the imaging unit release lever to the left. 7.
  • Page 78 Install the fixing unit felt. 1. Open the eject cover. 2. Install the fixing unit felt packed with the imaging unit to the fixing section. Fixing unit felt Figure 3-1-13 3. Close the eject cover. Connect the power plug. 1. Connect the power code to the inlet. 2.
  • Page 79 Initialize the imaging unit. Caution: Do not insert the toner cartridge before initialization of the imaging unit completes. 1. Turn the main switch on. Aging starts and, after two minutes, the “IU Initialized. Set Toner Cartridge.” message is displayed. Main switch Figure 3-1-15 Install the toner cartridge.
  • Page 80 3. Insert the toner cartridge completely, aligning it with the guide rail. Figure 3-1-17 Clean the main charger. 1. Hold the main charger cleaning knob and pull and push it back and forth 2 or 3 times. Push the knob back in completely. Figure 3-1-18 2.

  • Page 81: Setting Initial Copy Modes

    3-1-2 Setting initial copy modes Factory settings are as follows: Function Contents Factory setting Switching between double and single counts Double counts Setting auto start Auto start on Setting auto clear time 60 s Setting auto preheat time 15 min. Setting auto shutoff time 30 min.
  • Page 82 3-1-3 Installing the ISU heater (option) ISU heater installation requires the following parts: ISU heater (P/N 35968060) Two cable holders (P/N M2105410) Procedure 1. Remove the contact glass. 2. Keep the scanner and mirror frame at the machine right. 3. Peel the backing off the ISU heater and attach the heater at the machine left as shown in the diagram.

  • Page 83: Maintenance Mode

    CONTENTS 3-2 Maintenance Mode 3-2-1 Maintenance mode ................3-2-1 (1) Running a test mode..............3-2-1 (2) Maintenance mode items list ............3-2-2 (3) Contents of maintenance functions ..........3-2-5 1-1-17...
  • Page 84 3-2-1 Maintenance mode The copier is equipped with maintenance mode for service and repair of the machine. (1) Executing a maintenance function Start ..Entering maintenance mode Enter 10871087. Enter the function No. to be executed .
  • Page 85 (2) Maintenance function list Function Section Function name List output Outputting the own-status report Completion Exiting maintenance mode Drive, Moving the scanner to the DF scanning position paper feed Checking drive motor operation Checking the switches in the copier conveying Checking clutch operation 1 Checking clutch operation 2 Setting the folio width...
  • Page 86 Function Section Function name Optical Adjusting the magnification in the main scanning direction with (cont.) the original fed from the DF Adjusting the magnification in the auxiliary scanning direction with the original on the contact glass Adjusting the magnification in the auxiliary scanning direction with the original fed from the DF Adjusting detection of the original width Timing...
  • Page 87 Function Section Function name Counts Checking and clearing the waste toner tank count (cont.) Entering the service telephone No. Displaying the ROM version Displaying the engine ROM version Mode Switching between double and single counts settings Setting auto start Setting auto clear time Setting auto preheat time Setting auto shutoff time Setting operation under the toner empty condition...
  • Page 88 190-1 (3) Contents of maintenance functions Function Description Outputting the own-status report Description Outputs the list of settings in maintenance mode. Purpose Used before replacing the main PCB. Method Press the start key. A sheet of the own-status report as in the figure below is output and the current function is exited.
  • Page 89 190-1 Function Description Exiting maintenance mode Description Exits maintenance mode and returns to normal mode. Purpose Used when ending maintenance mode. Method Press the start key. The copier returns to normal mode. 3-2-6 3-2-5-1...
  • Page 90 Function Description Moving the scanner to the DF scanning position Description Moves the scanner and the mirror frame to the DF scanning positions. Purpose Used when the scanner and mirror frames are to be fastened with pins before moving the machine. Method 1.
  • Page 91 Function Description Display (switch name) Status (cont.) B.SIZE (bypass paper size switch) 5: A3/11" 1: B4 3: A4/8 " 7: B5 6: A5/5 " 2: B6 0: A6 (all widthwise) P.E (paper switch) On, off B: A3/11" × 17" SIZE (paper size switch 1/2/3/4) "...
  • Page 92 Function Description Checking clutch operation 1 Description Turns individual clutches on and off. Purpose To check clutch operation. Method 1. Press the start key. 2. Enter the number specified for the clutch to be checked with the numeric keys. The bit on the display corresponding to the clutch being turned on changes from 0 to 1.
  • Page 93 Function Description Checking clutch operation 2 Description Turns individual clutches on and off. Purpose To check clutch operation. Method 1. Press the start key. 2. Enter the number specified for the clutch to be checked with the numeric keys. The bit on the display corresponding to the clutch being turned on changes from 0 to 1.
  • Page 94 190-1 Function Description Setting the folio width Description Changes the image area by setting the width of the folio paper used. Purpose To be set according to the width of the paper; when the setting is shorter than the actual paper used, the right and left sides of the image are not printed.
  • Page 95 190-1 Function Description Adjusting the amount of slack in the paper of drawer 2 Description Adjusts the amount of slack in the paper when drawer 2 (upper special cassette, optional) is used. Purpose Used when paper from the upper special cassette is missing part of the image or has an irregular image at the leading edge, or when paper is Z-folded.
  • Page 96 190-1 Function Description Adjusting the amount of slack in the paper of drawer 4 Description Adjusts the amount of slack in the paper when drawer 4 (lower special cassette, optional) is used. Purpose Used when paper from the lower special cassette is missing part of the image or has an irregular image at the leading edge, or when paper is Z-folded.
  • Page 97 Function Description Checking the switches on drawer 2 Description Displays the status of the switches on drawer 2 (upper special cassette, optional). Purpose To check the operation of the switches in the upper special cassette (optional). Method 1. Press the start key. 2.
  • Page 98 Function Description Checking the switches on drawer 3 Description Displays the status of the switches on drawer 3 (middle special cassette, optional). Purpose To check the operation of the switches in the middle special cassette (optional). Method 1. Press the start key. 2.
  • Page 99 Function Description Checking the switches on drawer 4 Description Displays the status of the switches on drawer 4 (lower special cassette, optional). Purpose To check the operation of the switches in the lower special cassette (optional). Method 1. Press the start key. 2.
  • Page 100 190-1 Function Description Checking the operation of the cassette drive motor Description With the special cassette (optional) attached, turns the cassette drive motor and paper feed clutch on. Purpose To check the drive system of the special cassette. Method Press the start key. The cassette drive motor is turned on. Completion Press the all clear/reset key.
  • Page 101 190-1 Function Description Setting the developing bias control voltage Description Sets the developing bias control voltage. Purpose Used when image contrast is incorrect. Method Press the start key. The current setting is displayed. Setting 1. Change the setting using the numeric keys. Initial value Description Setting range...
  • Page 102 190-1 Function Description Adjusting the toner control voltage Description Changes the toner control voltage which has been set automatically after replacement (initialization) of the imaging unit. Purpose Used to reset data after the main PCB is replaced or function No. 601 is executed.
  • Page 103 190-1 Function Description Resetting the waste toner tank overflow detection Description Resets the waste toner tank overflow detection which is stored by the main PCB. Purpose Used after the waste toner tank is replaced. Method Press the start key. After resetting, “COMPLETED” is displayed. Completion Press the all clear/reset key.
  • Page 104 190-1 Function Description Resetting the fixing problem detection Description Resets service call code C60 (fixing problem). Purpose Used after the cause of the fixing problem is eliminated. Method Press the start key. After resetting, “COMPLETED” is displayed. Completion Press the all clear/reset key. The current function is exited. Adjusting the ISU gain Description Displays the ISU gain data in real time.
  • Page 105 190-1 Function Description Adjusting home position with the DF Description Adjusts the scanner home position when the sheet-through DF (optional) is used. Purpose Do not change the setting; otherwise, the light from the exposure lamp is blocked and image problems, including black lines appearing on the image, may occur.
  • Page 106 190-1 Function Description Adjusting the magnification in the main scanning direction with the original on the contact glass Adjustment Refer to page 3-3-23. Adjusting the magnification in the main scanning direction with the original fed from the DF Description Adjusts the magnification in the main scanning direction when the sheet- through DF (optional) is used.
  • Page 107 190-1 Function Description Adjusting the magnification in the auxiliary scanning direction with the original fed from the DF Description Adjusts the magnification in the auxiliary scanning direction when the sheet-through DF (optional) is used. Purpose Used when the magnification in the auxiliary scanning direction is incorrect with the sheet-through DF.
  • Page 108 190-1 Function Description Adjusting detection of the original width Description Sets the criteria to be used in detecting each original width. Purpose Used when an original width is not detected correctly. Method Press the start key. Setting 1. Select an original width using the cursor down key and press the start key.
  • Page 109 190-1 Function Description Adjusting the start position of image printing Adjustment Refer to page 3-3-7. Adjusting the scanning start position of the original on the contact glass Adjustment Refer to page 3-3-21. Adjusting the scanning start position of the original fed from the DF Description Adjusts the start position of original scanning when the sheet-through DF (optional) is used.
  • Page 110 190-1 Function Description Adjusting the scanning end position of the original fed from the DF Description Adjusts the end position of original scanning when the sheet-through DF (optional) is used. Purpose Used if the trailing edge of the original does not agree with that of the copy image when the sheet-through DF is used.
  • Page 111 190-1 Function Description Adjusting the centerline of drawer 3 Description Adjusts the image centerline when paper is fed from the middle special cassette (optional). Purpose Used if the centerline of the original does not agree with that of the copy image when paper is fed from the middle special cassette.
  • Page 112 190-1 Function Description Adjusting the centerline of the bypass Method Refer to page 3-3-6. Adjusting the centerline of the original on the contact glass Method Refer to page 3-3-20. Adjusting the DF original centerline Description Adjusts the original scanning centerline when the sheet-through DF (optional) is used.
  • Page 113 Function Description Order of pressing the keys (cont.) Note It is not necessary to press the on-line key if the destination is set to “OEM4”. Order of Display Indicator pressing Function key FUNCTION On-line key ONLINE On-line Preset R/E key PRESET Zoom-down key Zoom-up key...
  • Page 114 190-1 Function Description Lighting all the indicators and display on the operation panel Description Lights the indicators and message display on the operation panel. Purpose Used to check the indicators and display on the operation panel. Method Press the start key. All the indicators on the operation panel light, and all the dots of the message display (LCD) light.
  • Page 115 190-1 Function Description Outputting test patterns Description Outputs test patterns stored in the copier. Purpose Used to check performance after an image printing problem or the position of the laser scanner unit is corrected. Method 1. Press the start key. 2.
  • Page 116 Function Description Outputting VTC patterns Description Outputs VTC patterns stored in the copier. Purpose Used to check for performance after an image printing problem is rectified. Method 1. Press the start key. 2. Select a paper source using the cursor down key. Display Paper feed position Drawer 1...
  • Page 117 190-1 Function Description Setting the copy count for waste toner tank replacement Description Sets the number of sheets of paper to be handled by one waste toner tank. Purpose Used to change the time of replacing the waste toner tank. Method Press the start key.
  • Page 118 190-1 Function Description Checking and clearing the DF original count Description Checks, changes or clears the original feed count of the sheet-through DF (optional). Purpose Used to check the time for replacing maintenance parts. Method 1. Press the start key. 2.
  • Page 119 190-1 Function Description Checking and clearing the printer count Description Checks, changes or clears the printing count of the printer. Purpose Used to check the time for replacing maintenance parts. Method 1. Press the start key. 2. Select either the single counter or the double counter using the cursor down key and press the start key.
  • Page 120 Function Description Checking and clearing the waste toner tank count Description Checks, changes or clears the count of the waste toner tank. Purpose Used when the waste toner tank is replaced. Method Press the start key. The current count is displayed. Setting •...
  • Page 121 190-1 Function Description Entering the service telephone No. Description Registers or deletes the service telephone No. shown when a service call code is triggered. Purpose To set the telephone number for a service call when installing the machine. Method Press the start key. If the telephone No. has already been registered, the current number is displayed.
  • Page 122 190-1 Function Description Displaying the engine ROM version Description Displays the ROM version of the engine PCB. Purpose Used to check the ROM version of the engine PCB. Method Press the start key. The ROM version is displayed. ENGINE ROM VERSION Ver 1.00 Completion Press the all clear/reset key.
  • Page 123 190-1 Function Description Setting auto start Description Turns the auto start function on or off. Purpose No change from the factory default of 1 is necessary. To prevent problems, change the setting to 2. Method Press the start key. The current setting is displayed. COPY AUTO START:1 1:ON 2:OFF...
  • Page 124 190-1 Function Description Setting auto preheat time Description Sets the time to enter preheat/energy saver mode after copying is completed. Purpose When the copier is in frequent use, increase the value to enable copying promptly without the recovery time from preheating; when the copier is not in frequent use, decrease the value to save energy.
  • Page 125 190-1 Function Description Setting operation under the toner empty condition Description Switches between single and continuous copies under the toner empty condition. Purpose To be set by the user based on how frequently continuous or single copies are made. Method Press the start key.
  • Page 126 190-1 Function Description Initializing memory 2 Description Writes the backup data of the engine PCB in the main PCB. Purpose Used after replacing the main PCB. Method 1. Press the start key. The memory is initialized. 2. After initialization, “COMPLETED” is displayed. Completion Press the all clear/reset key.
  • Page 127 Default: 000 If there is no destination data corresponding to the entered code, "NO SUCH CODE " is displayed. 5. Enter the OEM code. Mita: 000 INI. ALL DATA OEM CODE:000 6. Press the start key. Initialization of the Main PCB starts. If there is no OEM data corresponding to the entered code, "NO SUCH CODE "...
  • Page 128 Default: 000 If there is no destination data corresponding to the entered code, "NO SUCH CODE " is displayed. 5. Enter the OEM code. Mita: 000 INI. KEEP DATA OEM CODE:000 6. Press the start key. Initialization of the Main PCB starts. If there is no OEM data corresponding to the entered code, "NO SUCH CODE "...
  • Page 129 Function Description Setting factory defaults Description Initializes data to the factory defaults other than software switches for each destination and OEM, and machine data in SRAM. Purpose Used to initialize the above data to the factory defaults. Method 1. Press the start key. Data initialization starts. To cancel data initialization, press the all clear/reset key.
  • Page 130 Default: 000 If there is no destination data corresponding to the entered code, "NO SUCH CODE " is displayed. 5. Enter the OEM code. Mita: 000 INI. MFP DATA OEM CODE:000 6. Press the start key. Initialization of the Main PCB starts. If there is no OEM data corresponding to the entered code, "NO SUCH CODE "...
  • Page 131 190-1 Function Description Selecting the language group Description Selects the language group to be used on the operation panel. Purpose Used when the operation ROM has been changed to the one for a different destination. Method Press the start key. The current setting is displayed. Setting 1.
  • Page 132 190-1 Function Description Outputting the setting list Description Outputs the list of software switches and ROM versions. Purpose Used when checking the above items to trace the cause. Method Press the start key. A sheet of the setting list as in the figure below is output and the current function is exited.
  • Page 133 190-1 Function Description Outputting the action list Description Outputs the list of service call code detection history, version and other information. Purpose Used when checking the above items to trace the cause. Method Press the start key. A sheet of the action list as in the figure below is output and the current function is exited.
  • Page 134 190-1 Function Description Outputting the monitor list Description Outputs the list of destination codes, OEM codes, counts and ROM versions. Purpose Used when checking the above items to trace the cause. Method Press the start key. A sheet of the monitor list as in the figure below is output and the current function is exited.
  • Page 135 190-1 Function Description Outputting the own-status report Description Outputs the list of settings in maintenance mode. Purpose Used before replacing the main PCB. Method Press the start key. A sheet of the own-status report as shown in function No. 000 is output and the current function is exited. 3-2-50...

  • Page 136: Table Of Contents

    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 function ..........3-3-2 3-3-2 Paper feed section ................3-3-3 (1) Detaching and refitting the paper feed pulley ......3-3-3 (2) Detaching and refitting the bypass paper feed pulley ....

  • Page 137: Precautions For Assembly And Disassembly

    190-1 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 138: Running A Maintenance Function

    (2) Running a maintenance function Start Enter 10871087 with the numeric keys....Maintenance mode is entered....The maintenance function Enter the function No.

  • Page 139: Paper Feed Section

    3-3-2 Paper feed section (1) Detaching and refitting the paper feed pulley Clean or replace the paper feed pulley as follows. Procedure 1. Open the front cover and remove the imaging unit. 2. Detach the right, left and front covers. 3.

  • Page 140: Detaching And Refitting The Bypass Paper Feed Pulley

    190-1 190-2 8. Turn the paper feed assembly over. 9. Remove the E ring and the bushing on the front of the paper feed shaft. 10. Remove the screw holding each paper feed pulley, and pull the pulley off the paper feed shaft.
  • Page 141 190-2 2. Open the paper conveying assembly and remove the drawer. 3. Remove the screw and detach the strap from the paper conveying assembly. 4. Remove the E ring and pin on the machine front holding the paper conveying assembly and detach the assembly from the copier.
  • Page 142 190-1 190-2 7. Remove the screw holding each of the bypass lift cam and the bypass paper feed pulley. 8. Remove the two E rings, the bushing, the bypass lift cam, the two bypass paper feed collars and the bypass paper feed pulley from the bypass shaft. Bypass shaft E ring Bypass lift cam...

  • Page 143: Adjusting The Centerline Of Printing

    190-1 (3) Adjusting the centerline of printing Perform the following adjustment if there is a regular error between the centers of the original and the copy image on paper from a specific paper source. No. 120 No. 126 (p. 3-3-20) Caution: •...

  • Page 144: Adjusting The Start Position Of Image Printing

    190-1 (4) Adjusting the start position of image printing Perform the following adjustment when changing the leading edge margin. No. 110 No. 106 No. 111 (p. 3-3-23) (p. 3-3-21) Caution: When performing this adjustment, all the above maintenance items must be executed in the order indicated.

  • Page 145: Adjusting The End Position Of Image Printing

    190-1 (5) Adjusting the end position of image printing Perform the following adjustment if the trailing edge margin is not within the specified range. No. 110 No. 115 No. 106 No. 111 No. 116 (p. 3-3-7) (p. 3-3-23) (p. 3-3-21) (p.

  • Page 146: Optical Section

    3-3-3 Optical section (1) Detaching and refitting the exposure lamp Clean or replace the exposure lamp as follows. Procedure 1. Detach the contact glass. 2. Move the scanner to the machine center. 3. Remove the 2-pin connector of the exposure lamp from the inverter PCB. 4.

  • Page 147: Detaching And Refitting The Scanner Wires

    (2) Detaching and refitting the scanner wires Take the following steps when the scanner wires are broken or to be replaced. After replacing the scanner wires, proceed to (4) Adjusting lateral image squareness (adjusting the installation of the ISU) . (2-1) Detaching the scanner wires Procedure 1.

  • Page 148: Refitting The Scanner Wires

    Wire retainer Scanner wire Round terminal Scanner wire spring Round terminal Screws ISU wire Scanner Mirror frame Figure 3-3-12 Detaching the scanner wire (2-2) Refitting the scanner wires Refitting requires the following tool: Scanner wire drum clip (part No.: 35968110) Procedure At the machine rear: 1.
  • Page 149 190-1 3. Remove the four screws holding the scanner front and rear rails, and the rails. 4. Remove the E rings and the bearings holding the scanner drive shaft at the front and rear. 5. Remove the two screws holding the scanner wire drum and pull the scanner drive shaft off the scanner wire drum.
  • Page 150 10. Refit the scanner wire drum and the scanner drive shaft to the machine and secure them with the E rings. 11. Refit the scanner front and rear rails. 12. Remove the scanner wire drum clip. 13. Place the mirror frame on the scanner rails. 14.
  • Page 151 22. Hold the scanner wires with the wire retainers and tighten the screws. Do not tighten completely. 23. Insert two positioning screws M3 × 16 (part No. B1303160) in the positioning holes in the center of each of the scanner front and rear rails (Figure 3-3-17). Machine rear Wire retainer Positioning screws...
  • Page 152 24. Move the mirror frame until it touches the inner positioning screws (Figure 3-3-17 1). 25. Adjust the wire tension plates so that the scanner wires on the front and rear of the machine are tensioned equally. Machine rear Machine front Wire tension plates Scanner wire Scanner wire...

  • Page 153: Detaching And Refitting The Laser Scanner Unit

    (3) Detaching and refitting the laser scanner unit Take the following steps when the laser scanner unit is to be checked or replaced. Caution: After replacing the laser scanner unit, proceed to (4) Adjusting lateral image squareness . Procedure 1. Remove the right, left, front and tray covers. 2.

  • Page 154: Adjusting Lateral Image Squareness (Reference)

    (4) Adjusting lateral image squareness (reference) Make the following adjustment if the copy image is skewed laterally (lateral squareness is not obtained). Caution: To adjust lateral image squareness, adjust the position of the laser scanner unit and check for squareness of the copy image. If squareness is not obtained, adjust the installation of the ISU.
  • Page 155 Adjusting the installation of the ISU Caution: Make a test copy after adjusting the installation of the ISU. If a background appears on the copy image, proceed to (5) Adjusting the angle of mirror 3 . Procedure Start Enter maintenance mode. Enter 400 with the numeric keys and press the start key.

  • Page 156: Adjusting The Angle Of Mirror 3

    (5) Adjusting the angle of mirror 3 Make the following adjustment if a background appears on the copy image after replacing the scanner wires or mirror 3. Procedure Start Make a test copy using a white Turn the adjusting screw using sheet of original at exp.

  • Page 157: Adjusting The Scanning Centerline Of The Original On The Contact Glass

    190-1 (6) Adjusting the scanning centerline of the original on the contact glass Make the following adjustment when there is a regular error between the centerlines of the copy image and original. No. 120 No. 126 (p. 3-3-6) Caution: • When performing this adjustment, all the above maintenance items must be executed in the order indicated.

  • Page 158: Adjusting The Scanning Start Position Of The Original On The Contact Glass

    190-1 (7) Adjusting the scanning start position of the original on the contact glass Perform the following adjustment when there is a regular error between the leading edges of the copy image and original. No. 110 No. 115 No. 106 No.

  • Page 159: Adjusting The Scanning End Position Of The Original On The Contact Glass

    190-1 (8) Adjusting the scanning end position of the original on the contact glass Perform the following adjustment when there is a regular error between the trailing edge of the copy image and original. No. 110 No. 115 No. 106 No.

  • Page 160: Adjusting The Magnification

    190-1 (9) Adjusting the magnification Perform the following adjustment if the magnification in the main or auxiliary scanning direction is not correct. No. 110 No. 115 No. 106 No. 111 No. 116 (p. 3-3-7) (p. 3-3-8) (p. 3-3-21) (p. 3-3-22) Caution: When performing this adjustment, all the above maintenance items must be executed in the order indicated.

  • Page 161: Adjusting The Right And Left Margins

    190-1 (10) Adjusting the right and left margins Adjust the printing start or end position in the main scanning direction when the right or left margin is not correct. Precaution: Adjust and make a test copy for each size of paper. Procedure Left margin Right margin...

  • Page 162: Imaging Unit Section

    3-3-4 Imaging unit section (1) Detaching and refitting the drum and the cleaning blade (reference) Perform the following steps when cleaning or replacing the drum and replacing the cleaning blade. Precautions • Avoid direct sunlight and strong lighting when detaching and refitting the drum. •...
  • Page 163 Removing the drum 5. Remove the two rear screws holding the drum shaft, and the shaft. Remove the drum from the IU housing. 6. Replace or clean the drum. Orient the drum correctly during reassembly. IU housing Drum shaft Rear Drum Front Figure 3-3-31 Detaching the drum...
  • Page 164 9. Remove the three screws holding the cleaning blade and detach the blade from the IU housing. 10. Replace the cleaning blade. Caution: During replacement, apply powder to the new cleaning blade. Replace the cleaning unit front, rear and lower seals at the same time. 11.

  • Page 165: Cleaning The Drum

    (2) Cleaning the drum Clean the drum as follows when an image problem occurs 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 166: Transfer Section

    3-3-5 Transfer section (1) Detaching and refitting the transfer roller Take the following steps when the transfer roller is to be cleaned or replaced. Procedure 1. Open the right side cover. 2. Remove the four screws and the transfer wire holding the transfer roller assembly, and then the assembly.

  • Page 167: Fixing And Eject Section

    190-1 3-3-6 Fixing and eject section (1) Detaching the fixing unit Take the following steps when cleaning, inspecting or replacing parts in the fixing unit. Procedure 1. Detach the right, left, front, tray and rear covers. 2. Disconnect the 3-pin connectors, remove the two screws holding cooling fan motor 1 on the machine rear, and then fan motor 1.
  • Page 168 4. Remove the 3-pin connector of safety switch 3, the 2-pin connector of the fixing unit thermistor, the 3-pin connector of the eject switch, and the two 1-pin connectors of the fixing heater. 5. Remove the four screws holding the fixing unit on the machine right, and then remove the unit from the machine.

  • Page 169: Replacing The Fixing Heater

    (2) Replacing the fixing heater Take the following steps when replacing the fixing heater. Procedure 1. Remove the fixing unit felt. 2. Remove the two screws holding the fixing unit cover, and then the cover. 3. Remove the 1-pin connector of the fixing heater from fixing unit thermostat 1. 4.

  • Page 170: Replacing The Fixing Unit Thermistor

    (3) Replacing the fixing unit thermistor Take the following steps when replacing the fixing unit thermistor. Procedure 1. Remove the two screws holding the fixing unit cover, and then the cover. 2. Remove the screw holding the fixing unit thermistor, and then the thermistor. 3.

  • Page 171: Replacing Fixing Unit Thermostats 1 And 2

    (4) Replacing fixing unit thermostats 1 and 2 Take the following steps when replacing fixing unit thermostats 1 and 2. Caution: Use the specified thermostat for replacement. Do not substitute a simple wire or similar; otherwise, the machine will be seriously damaged. Procedure 1.

  • Page 172: Detaching And Refitting The Heat And Press Rollers And The Heat Roller Separation Claws

    (5) Detaching and refitting the heat and press rollers and the heat roller separation claws Take the following steps when cleaning or replacing the heat and press rollers and the heat roller separation claws. Procedure 1. Remove the fixing heater. (Refer to page 3-3-32.) 2.
  • Page 173 Detaching the press roller 7. Remove the front and rear bearings and the press roller. Bearing Press roller Bearing Figure 3-3-43 Detaching the press roller Detaching the heat roller separation claws 8. Detach the separation claw springs from the catches to remove all the four heat roller separation claws.

  • Page 174: Others

    190-1 3-3-7 Others (1) Detaching and refitting the waste toner tank Replace the waste toner tank when the message display shows “Time for Maintenance”. Procedure 1. Remove the rear cover (two screws). 2. Open the drawer. 3. Open the front cover and take out the imaging unit. 4.
  • Page 175 190-1 CONTENTS 3-4 PCB Initial Settings 3-4-1 Replacing the main PCB ..............3-4-1 3-4-2 Replacing the engine PCB ..............3-4-3 3-4-3 Adjustment-free variable resisters (VR) ..........3-4-4 1-1-21...

  • Page 176: Replacing The Main Pcb

    190-1 3-4-1 Replacing the main PCB Before and after replacing the main PCB, perform the steps below. Main PCB replacement requires the following tools: Flash tool assembly (P/N 35968010) Main ROM IC1(P/N 19068150) Main ROM IC2 (P/N 19068160) Procedure • Before removing the old main PCB: 1.
  • Page 177 7. Remove the blanking cover on the rear of the copier and insert the flash tool assembly into the top slot. Flash tool assembly Blanking cover Figure 3-4-2 8. Insert the power plug and turn the main switch on. FLASH PUSH START 9.
  • Page 178 190-1 190-3 11. Turn the main switch off. 12. Remove the flash tool assembly and refit the blanking cover. 13. Turn the main switch on. 14. Enter the maintenance mode. 15. Execute maintenance item 604. 16. Execute the maintenance items in the data recorded on the own-status report output in step 2 to reenter or check the data.

  • Page 179: Adjustment-Free Variable Resisters (Vr)

    190-1 3-4-3 Adjustment-free variable resisters (VR) The variable resistors listed below are set at the factory prior to shipping and cannot be adjusted in the field. • High-voltage transfer PCB: VR101, VR201, VR301, VR 401 • Engine PCB: VR1, VR2 3-4-4...
  • Page 180 190-1 3-4-3 Adjustment-free variable resisters (VR) The variable resistors listed below are set at the factory prior to shipping and cannot be adjusted in the field. • High-voltage transfer PCB: VR101, VR201, VR301, VR 401 • Engine PCB: VR1, VR2 3-4-4...
  • Page 181 CONTENTS 3-5 Self Diagnostics 3-5-1 Self-diagnosis ..................3-5-1 (1) Self-diagnostic function ............... 3-5-1 Self diagnostic codes ..............3-5-2 1-1-23...

  • Page 182: Self-Diagnosis

    3-5-1 Self-diagnosis (1) Self-diagnostic function This unit is equipped with a self-diagnostic function. When it detects a problem with itself, it disables copying and displays the problem as a code consisting of “C” followed by a two- digit number, indicating the nature of the problem. A message, “Call for service,” is also displayed.
  • Page 183 Self diagnostic codes Remarks Code Contents Check procedures/ Causes corrective measures Operation unit PCB com- The connec- Check the connection of con- munication problem tors of the nectors of the wires between There is a communication wires between the main PCB and operation problem between the main the main PCB PCB.
  • Page 184 Remarks Code Contents Check procedures/ Causes corrective measures Exposure lamp problem The connec- Check the connection of the The value of the ASIC ad- tors of the connectors of the exposure dress AGCHMAX is 30 or exposure lamp. less when scanning the lamp make white reference data.
  • Page 185 Remarks Code Contents Check procedures/ Causes corrective measures Main charger output Main charger Check the charger housing problem output leaking. visually and clean it if it is dirty. The MC ALM signal is out- Broken Check the charger wire visually put from the high-voltage charger wire.
  • Page 186 1-1-24...
  • Page 187 CONTENTS 3-6 Troubleshooting 3-6-1 Image formation problems ..............3-6-1 (1) No image appears (entirely white)..........3-6-3 (2) No image appears (entirely black)..........3-6-4 (3) Image is too light................. 3-6-5 (4) Background is visible..............3-6-5 (5) A white line appears longitudinally..........3-6-6 (6) A black line appears longitudinally.
  • Page 188 (7) The paper feed clutch does not operate........3-6-33 (8) The bypass paper feed clutch does not operate...... 3-6-33 (9) The registration clutch does not operate........3-6-34 (10) The cleaning lamp does not turn on......... 3-6-34 (11) The exposure lamp does not turn on (C10).

  • Page 189: Image Formation Problems

    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 3-6-3. See page 3-6-4. See page 3-6-5. (4) Background is visible. (5) A white line appears (6) A black line appears longitudinally.

  • Page 190: Paper Creases

    (13) Paper creases. (14) Offset occurs. (15) Image is partly missing. See page 3-6-10. See page 3-6-10. See page 3-6-11. (16) Fixing is poor. (17) Image is out of focus. (18) Image center does not align with the original center. See page 3-6-11.
  • Page 191 (1) No image appears Causes (entirely white). 1. No transfer charging. Causes Check procedures/corrective measures 1. No transfer charging. A. Broken transfer wire. Repair or replace the wire. B. The connector terminals of the Check for continuity across the terminals. If high-voltage transformer PCB none, replace the terminals.
  • Page 192 (2) No image appears Causes (entirely black). 1. Exposure lamp fails to light. 2. No main charging. Causes Check procedures/corrective measures 1. Exposure lamp fails to light. A. The connector terminals of the Check for continuity across the terminals. If exposure lamp make poor none, replace the terminals.
  • Page 193 (3) Image is too light. Causes 1. Misadjusted exposure level. 2. Insufficient toner. 3. Deteriorated developer. 4. Dirty or deteriorated drum. Causes Check procedures/corrective measures 1. Misadjusted exposure level. Adjust exposure level (see page 3-2-42). 2. Insufficient toner. If the display shows the message requesting toner replenishment, replace the cartridge.
  • Page 194 (5) A white line appears Causes longitudinally. 1. Dirty or flawed charger wire. 2. Foreign matter in the imaging unit. 3. Flawed drum. Causes Check procedures/corrective measures 1. Dirty or flawed charger wire. Clean the charger wire or, if it is flawed, replace it.
  • Page 195 (7) A black line appears Causes laterally. 1. Flawed drum. 2. Dirty developing section in the imaging unit. Causes Check procedures/corrective measures 1. Flawed drum. Replace the drum (see page 3-3-25). 2. Dirty developing section in the Clean the developing section in the imaging imaging unit.
  • Page 196 (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 3-3-25). 2.
  • Page 197 (11) The leading edge of the Causes image is consistently 1. Misadjusted scanning start position for the original on misaligned with the the contact glass. original. Causes Check procedures/corrective measures 1. Misadjusted scanning start Readjust the scanning start position for the position for the original on the original on the contact glass (see page 3-3- contact glass.
  • Page 198 (13) Paper creases. Causes 1. Paper curled. 2. Paper damp. Causes Check procedures/corrective measures 1. Paper curled. Check the paper storage conditions. 2. Paper damp. Check the paper storage conditions. (14) Offset occurs. Causes 1. Defective cleaning blade. Causes Check procedures/corrective measures 1.
  • Page 199 (15) Image is partly missing. Causes 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 3-3-28). 4.
  • Page 200 (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 201 (19) Image is not square. Causes 1. Squareness adjusted (laser scanner unit positioned) incorrectly. 2. Image scanning unit positioned incorrectly. Causes Check procedures/corrective measures 1. Squareness adjusted (laser Adjust the squareness (installation position of scanner unit positioned) the laser scanner unit; see page 3-3-17). incorrectly.

  • Page 202: Paper Misfeeds

    3-6-2 Paper misfeeds 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 the reg- any. in the paper istration switch. feed or con- Defective registration switch. With 5 V DC present at CN5-10 veying section on the engine PCB, check if...
  • Page 203 Problem Causes/check procedures Corrective measures Check if the paper feed clutch Check and repair if necessary. A paper jam malfunctions. in the drawer Electrical problem with the pa- See page 3-6-33. is indicated per feed clutch. during copy- ing. Check if the bypass paper feed Check and replace the de- A paper jam pulley is deformed.
  • Page 204 Problem Causes/check procedures Corrective measures Check if the heat roller separa- Clean or replace the heat roller A paper jam tion claws are extremely dirty or separation claws (see page in the eject deformed. 3-3-35). section is indi- Check if the upper eject pulley Check and repair if necessary.

  • Page 205: Pcb Terminal Voltages

    190-1 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 206 190-1 Terminals (CN) Voltage Remarks 24 V DC 24 V DC supply for EPCB, output 24 V DC 24 V DC supply, input 24 V DC 24 V DC supply for EPCB, output 24 V DC 24 V DC supply for EPCB, output 5 V DC 5 V DC supply for EPCB, output 5 V DC...

  • Page 207: Main Pcb

    190-1 (2) Main PCB L1007 C1514 C1510 C1301 R1501 R1502 R1025 R1026 C1108 R1337 R1301 R1033 R1336 R1302 R1027 C1033 R1031 R1303 R1028 R1304 R1305 R1034 R1306 R1001 R1030 R1029 C1105 C1031 R1319 L901 C909 R904 C1107 R903 R902 L907 C1006 C1007 C1024...
  • Page 208 Terminals (CN) Voltage Remarks 5/0 V DC (pulse) EPCB control signal, input (SVCLK) 5/0 V DC (pulse) EPCB control signal, input (SVD0) 5/0 V DC (pulse) EPCB control signal, input (SVD1) 5/0 V DC (pulse) EPCB control signal, input (SVD2) 5/0 V DC (pulse) EPCB control signal, input (SVD3) 5/0 V DC (pulse)
  • Page 209 Terminals (CN) Voltage Remarks 5 V DC 5 V DC supply for OPCB, output 5/0 V DC (pulse) OPCB control signal, output (COM) 5/0 V DC (pulse) OPCB control signal, input (STATUS) 5/0 V DC (pulse) OPCB control signal, output (SCLK) 5/0 V DC (pulse) OPCB control signal, input (SIG1) 5/0 V DC (pulse)

  • Page 210: Engine Pcb

    190-1 (3) Engine PCB CN14 CN15 CN16 IC35 8HD185 • • • • • • • • • • • • • • • • • • • • CN19 • • • • • • • • • • •...
  • Page 211 Terminals (CN) Voltage Remarks 24 V DC 24 V DC supply, input 24 V DC 24 V DC supply for PSPCB, output 24 V DC 24 V DC supply, input 24 V DC 24 V DC supply, input 21-1 5 V DC 5 V DC supply, input 21-1 5 V DC...
  • Page 212 Terminals (CN) Voltage Remarks 21-1 5/0 V DC (pulse) BYPPSSW (1) return signal, input 21-1 5/0 V DC (pulse) BYPPSSW (2) return signal, input 21-1 5/0 V DC (pulse) BYPPSSW (3) return signal, input 24 V DC 24 V DC supply for HVTPCB, output 0/17.7 V DC HVTPCB (MC) on/off, output 0/15.7 V DC...
  • Page 213 Terminals (CN) Voltage Remarks 10-3 10-1 0/5 V DC OSSW on/off, input 11-1 21-1 5 V DC 5 V DC supply for FTH, output 11-2 21-1 FTH detection voltage, input 12-1 12-5, -6 24 V DC 24 V DC supply for MOTPCB, output 12-2 12-5, -6 24 V DC...
  • Page 214 Terminals (CN) Voltage Remarks 16-5 16-6 5/0 V DC (pulse) CCDPCB control signal, output (CCDCLK1) 16-7 16-8 5/0 V DC (pulse) CCDPCB control signal, output (CCDCLK2) 16-9 16-10 5/0 V DC (pulse) CCDPCB control signal, output [ROG (SH)] 16-11 16-12 5/0 V DC (pulse) CCDPCB control signal, output [S/H (SP1)]...
  • Page 215 Terminals (CN) Voltage Remarks 18-23 18-22 0/5 V DC STMOTPCB* (STPSW1) on/off, input 18-24 18-22 0/5 V DC STMOTPCB* (STPSW2) on/off, input 18-25 18-22 0/5 V DC STMOTPCB* (STPSW3) on/off, input 18-26 18-22 0/5 V DC STFSW1* on/off, input 18-27 18-22 0/5 V DC STFSW2* on/off, input...
  • Page 216 Terminals (CN) Voltage Remarks 19-42 21-1 5/0 V DC (pulse) MPCB control signal, output (_LSUOUT) 19-44 21-1 5/0 V DC (pulse) MPCB control signal, output (_RSTWR) 21-2 21-1 +12 V DC +12 V DC supply, input 21-3 21-1 –12 V DC –12 V DC supply, input 21-4 21-1...

  • Page 217: Motor Pcb

    (4) Motor PCB E C B 494VO BD 3 TR1 R1 E C B LS07 LS04 • • STK8711BMK4 J12 CON1 3592814 REV : 1 3-6-28...
  • Page 218 Terminals (CN) Voltage Remarks 5/0 V DC DF*/SM selection signal, input (MOTSEL) Motor control voltage, input (SMREF) 5/0 V DC (pulse) Motor coil energization pulse signal, input (MOT _B) 5/0 V DC (pulse) Motor coil energization pulse signal, input (MOT B) 5/0 V DC (pulse) Motor coil energization pulse signal, input (MOT _A)

  • Page 219: Operation Unit Pcb

    (5) Operation unit PCB Terminals (CN) Voltage Remarks 24 V DC 24 V DC supply from MPCB, input 5 V DC 5 V DC supply from MPCB, input 5/0 V DC (pulse) MPCB control signal, input (SCLK) 5/0 V DC (pulse) MPCB control signal, input (COM) 5/0 V DC (pulse) MPCB control signal, output (STATUS)

  • Page 220: Electrical Problems

    3-6-4 Electrical problems Problem Causes Check procedures/corrective measures No electricity at the Measure the input voltage. The machine power outlet. does not op- The power cord is Check the contact between the power plug erate when not plugged in and the outlet. the main properly.

  • Page 221: Cooling Fan Motor 1 Does Not Rotate

    Problem Causes Check procedures/corrective measures Broken scanner Check for continuity across the coil. If none, The scanner motor coil. replace the scanner motor. motor does Poor contact in the Check for continuity across the connector not rotate. scanner motor terminals. If none, replace them. connector termi- nals.
  • Page 222 Problem Causes Check procedures/corrective measures Broken cooling fan Check for continuity across the coil. If none, Cooling fan motor 2 coil. replace cooling fan motor 2. motor 2 does Poor contact in the Check for continuity across the connector not rotate. cooling fan motor 2 terminals.
  • Page 223 Problem Causes Check procedures/corrective measures Broken registration Check for continuity across the coil. If none, The registra- clutch coil. replace the registration clutch. tion clutch Poor contact in the Check for continuity across the connector does not op- registration clutch terminals.
  • Page 224 Problem Causes Check procedures/corrective measures (13) Broken wire in the Check for continuity across the heater. If The fixing fixing heater. none, replace the fixing heater (see page heater does 3-3-32). not turn on Fixing unit thermo- Check for continuity across each thermostat. (C60).
  • Page 225 Problem Causes Check procedures/corrective measures (16) Broken transfer See page 3-6-3. Transfer wire. charging is Poor contact in the not performed high-voltage trans- (C52). former PCB con- nector terminals. Defective main PCB. Defective engine PCB. Defective high- voltage trans- former PCB. (17) Poor contact in the Check the developing bias wire.
  • Page 226 Problem Causes Check procedures/corrective measures (19) Original is not Check the original and set it correctly. The original placed correctly. size is not Poor contact in the Check for continuity across the connector detected cor- original size switch terminals. If none, replace them. rectly.
  • Page 227 Problem Causes Check procedures/corrective measures (23) A piece of paper Check and remove if any. A paper jam torn from copy is indicated paper is caught on the mes- around the regis- sage display tration switch or immediately eject switch. after the main Defective registra- With 5 V DC present at CN5-10 on the en-...

  • Page 228: Mechanical Problems

    3-6-5 Mechanical problems Problem Causes/check procedures Corrective measures Check if the paper feed pulley If dirty, clean with isopropyl al- No primary or bypass paper feed pulley is cohol. paper feed. dirty with paper powder. Check if the paper feed pulley Replace any deformed or worn or bypass paper feed pulley is pulley (see page 3-3-3, 4).
  • Page 229 Problem Causes/check procedures Corrective measures Check if the contact between If there is any problem, repair. Paper jams. the right and left registration rollers is correct. Check if the fixing unit front Repair or replace. guide is deformed. Check if the fixing unit upper Repair or replace.
  • Page 230 190-1 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 Power source PCB (120 V area) ..............3-7-4 Power source PCB (220 – 240 V area) ............3-7-4-1 Main PCB 1/25 ....................

  • Page 231: Timing Chart No. 1

    Timing chart No. 1 From main switch on to stabilization MSW: ON 60 s Preheat mode High temperature 190°C/374°F Approx. 1°C/1.8°F Secondary stabilization Approx. 1°C/1.8°F 165°C/329°F fixing temperature Preheat temperature 150°C/302°F Approx. 1°C/1.8°F Primary stabilization 120°C/248°F fixing temperature CN1-4 DB REM CN8-9 100 ms 100 ms CN2-1...

  • Page 232: Timing Chart No. 2

    Timing chart No. 2 Printing the image onto a sheet of paper fed from the drawer or bypass table START KEY Chatter removal 100 ms 20 ms × 4 50 ms CN17-3 MSYNC CN17-1 CN2-2 100 ms At least 500 ms and after the laser diode has been turned on. DB REM CN8-9 50 ms ×...

  • Page 233: Timing Chart No. 3

    Timing chart No. 3 Scanning the image off an original placed on the contact glass SCAN signal 560 – Fwd. SM CN12-7 – 800 P 992 P CN12-12 Rev. 100 ms 40 ms 2500 P EL CN14-1 CN14-2 20 ms 50 ms 120 ms SVSYNC...

  • Page 234: Power Source Pcb (120 V Area)

    190-1 Power source PCB (120 V area) F101 D101 FB102 +24 V R103 2 CN3 +24 V IN F102 3 CN3 C104 R106 +24 V D103 F103 4 CN3 C101 +24 V 5 CN3 Q101 PC1_2 NTH1 6 CN3 +5 V C202 R201 7 CN3 FB201...

  • Page 235: Power Source Pcb (220 - 240 V Area)

    190-1 Power source PCB (220 – 240 V area) F101 D101 FB102 +24 V R103 2 CN3 +24 V IN F102 3 CN3 C104 R106 +24 V D103 F103 4 CN3 C101 +24 V 5 CN3 Q101 PC1_2 NTH1 6 CN3 +5 V C202 R201 7 CN3...
  • Page 236 190-1 Main PCB AD(15:0) ˙004_03A˙ AB(23:1) ˙004_02A˙ R136 ASTB_ ASTB ˙004_03D˙ R135 ˙004_03D˙ R134 WRL_ CPUX1 ˙027_09A˙ ˙004_03D˙ R133 WRH_ ˙004_03D˙ R102 R132 IORD_ D8H16L IORD ˙004_03D˙ R131 IOWR_ R101 IOWR ˙004_03D˙ R130 DEX_ ˙004_03E˙ RESET_ R153 ˙004_09G˙ R129 SYSCLK ˙004_09G˙...
  • Page 237 190-1 Main PCB CPDBUS(208:1) ˙004_01A˙ REFRQL IDB10 DACK1L IDB11 DACK0L IDB12 READYL IDB13 RESETL IDB14 DEKL IDB15 RASL IORDL IOWRL WRLL WRHL ASTBL AB23 AB22 AB21 AB20 AB19 AB18 ASIC CPD IA10 AB17 IA11 AB16 IA12 IA13 AD15 IA14 AD14 IA15 AD13 IA16...

  • Page 238: Main Pcb 1/25

    190-1 Main PCB CPDBUS(208:1) ˙003_11A˙ IAB (23:0) MAB (9:0) AB(23:16) SAB(15:1) ˙009_02A˙ ˙005_01B˙ ˙008_09C˙ ˙002_02A.005_01B˙ AD(15:0) SDB(15:0) ˙005_01A˙ ˙002_02A˙ R211 R242 R286 R212 R243 R244 R287 R213 R288 R214 R245 R246 R289 R215 R290 R216 R247 R248 R291 R217 R292 R218 R249 R250...
  • Page 239 Main PCB SDB (15:0) ˙004_05A.006_02A˙ AB (23:16) ˙004_02A.021_05A˙ SAB (15:1) ˙004_04A.006_02A˙ 512Kx16 EEPROM R309 RESET_ ˙004_09G.006_08F˙ CSFLM_ ˙004_05F˙ C303 C304 ˙004_03D.006_02D˙ WRFLM_ ˙004_05F˙ GND2 BYTE GND1 FLASH MEMORY 3-7-8 PointSource Ai1515/Vi150 (MCA/MCE) S/M...

  • Page 240: Main Pcb 2/25

    Main PCB SDB (15:0) ˙005_01A.007_01A˙ SDA (15:1) ˙005_01B.007_01A˙ 32Kx8 SRAM C407 CSSRM_ ˙004_05F˙ L401 IC38 R410 C401 ˙005_01E.007_01E˙ WRSRM_ ˙004_05F˙ R401 R403 R409 C406 R405 RESET_ ˙005_01E.008_02C˙ IC35 R402 BAT1 IC37 R407 C403 RSTIN RST+ R408 C404 SRAM & BACKUP 3-7-9 PointSource Ai1515/Vi150 (MCA/MCE) S/M...
  • Page 241 190-1 Main PCB SDB (15:0) ˙006_02A.008_02A˙ SAB (15:1) ˙006_02A.008_02A˙ 1Mx16 DRAM VCC3 CASU VCC2 VCC1 CASL C508 C509 C510 GND3 GND2 GND1 OMRAS_ ˙022_09E˙ OMCAS0H_ ˙022_09C˙ OMCAS0L_ ˙022_09E˙ ˙006_02D.021_06E˙ WRDRM_ ˙004_05F.021_06E˙ DRAM & SP AMP 3-7-10 PointSource Ai1515/Vi150 (MCA/MCE) S/M...

  • Page 242: Main Pcb 3/25

    190-1 Main PCB SDB (15:0) '007_01A.010_02A' SAB(15:1) '007_01A.010_02A' IOA3 IOD15 IOA2 IOD14 IOA1 IOD13 IOA0 IOD12 IOD11 IC13 IOD10 IOD9 ACEE IOD8 IOD7 IOD6 CLK16M '004_09G.010_02C' IOD5 IOD4 RESET_ IOD3 '006_08F.010_09B' IOD2 CSACE_ '004_05E' IOD1 SIORD_ '004_05E.012_02D' IORD IOD0 SIOWR_ IOWR '004_05E.010_02F' INTACE...
  • Page 243 Main PCB IDB (15:0) '008_02E, 010_02F' MAB (9:0) '004_10A, 025_03A' IC14 512K×8DRAM VCC2 VCC1 C807 C808 IRAS0_ '004_10C, 025_02E' ICAS0_ '004_10D' IRD_ GND2 '008_09F, 010_02D' IWR_ GND1 '008_09F, 010_02D' IC15 512K×8DRAM VCC2 VCC1 C809 C810 GND2 GND1 BIT MAP MEM 3-7-12 PointSource Ai1515/Vi150 (MCA/MCE) S/M...
  • Page 244 190-1 Main PCB SDB (15:0) '008_02A, 012_02B' SAB (15:1) CSRC_ '004_05E' '008_02A, 012_02A' RDRC_ '004_06G' RESET_ '008_02C, 012_02D' INTRC_ IRQL '002_02D' CLK16M CLK16M '008_02B, 016_10E' BREQ2_ TST5 IMBREQL '004_10D' BACK2_ TST4 IMBACKL '004_10D' TST3 IMA23 TST2 IMA22 IC16 TST1 IMA21 TST0 IMA20 IAS_...
  • Page 245 190-1 Main PCB FIPBUS (208:1) '012_01A' FI4D2 FI4D3 FI4D4 WR2L FI4D5 OE2L FI4D6 FI4D7 SA212 SA211 SHSYNCL SA210 SVSYNCL SA29 FHSYNCL FVSYNCL SA28 RRS2L SA27 WRS2L SA26 SA25 SA24 EK0D0 IC17 EK0D1 SA23 EK0D2 SA22 EK0D3 SA21 SA20 EK0D4 EK0D5 SD17 EK0D6 SD16...
  • Page 246 190-1 Main PCB FIPBUS (208:1) '011_11A' FS1A (12:0) SAB (15:1) '010_02A, 016_02A' '014_02A' EK0D (7:0) FI0D (7:0) '013_02B' '014_05E' R933 R941 R905 R942 R934 R906 R943 R935 R907 R936 R944 R908 R945 R937 R909 R946 R938 R910 SDB (15:0) R939 R947 '010_02A, 016_02B' R911...
  • Page 247 Main PCB FI1D (7:0) FI2D (7:0) FI3D (7:0) FI4D (7:0) FI0D (7:0) '012_07B' '012_07C' '012_07D' '012_07E' '012_07A' IC18 IC19 IC20 IC21 8Kx8 LINE 8Kx8 LINE 8Kx8 LINE 8Kx8 LINE RRST RRST RRST RRST L902 L903 L904 L905 WRST WRST WRST WRST C910 C911...
  • Page 248 Main PCB IC22 IC23 FS1D (7:0) FS2D (7:0) 32Kx8 SRAM 32Kx8 SRAM '012_05C' '012_05E' FS1A (12:0) FS2A (12:0) '012_05A' '012_05D' L906 L907 FRDS1_ C918 FRDS2_ C919 '012_05D' '012_05F' FWRS1_ FWRS2_ '012_05D' '012_05F' IC24 IC25 EK0D (7:0) EK1D (7:0) ESVD (7:0) '012_10B' '023_02A' '012_10A'...
  • Page 249 190-1 Main PCB VCBUS (208:1) '016_01A' IMWAITL FFR15 TST6 FFR16 FFR17 FF6RCK IMA0 FF5RRSL IMA1 FF6WCK IMA2 FF6WRSL IMA3 IMA4 IMA5 FF600 IMA6 FF601 IMA7 FF602 FF603 IMA8 FF604 IMA9 FF605 IMA10 FF6I0 IMA11 FF6I1 IC26 IMA12 FF6I2 IMA13 FF6I3 IMA14 FF6I4 IMA15...
  • Page 250 190-1 Main PCB VCBUS (208:1) '015_11A' IAB (23:0) '010_09F' SAB (15:1) VFIPD (7:0) '012_02A, 020_07A' '017_01A' R1002 VFI1WRS_ R1003 FNITI '018_02F' '012_02F' VFI1RRS_ R1004 '018_02F' R1027 VFI1WCK R1005 FHSYNC_ '018_02F' '012_02F' R1028 VFI1RCK R1006 FVSYNC_ '018_02F' '012_02F' R1007 VFI2WRS_ R1008 VMREOUT_ '018_02F' SDB (15:0)
  • Page 251 190-1 Main PCB IDB (15:0) '010_02F, 018_02A' IC29 IC27 VFIDPDD (7:0) VFIPD(7:0) '016_07A' IC40 8Kx8 LINE 5Kx8 LINE VF6I (5:0) VF6O (5:0) '016_07C' '016_07D' VFO1RE_ '016_07C' VF6RRS_ VFO1RRS_ RRST '016_07E' L1003 RRST '016_07B' L1001 VF6WRS_ VFO1WRS_ '016_07E' WRST '016_07B' WRST C1013 VF6RCK RCLK...
  • Page 252 190-1 Main PCB VFI2D (7:0) '016_09D' IC31 VFIDB(7:0) IDB (15:0) '017_06A, 025_03A' IC42 5Kx8 LINE RRST L1005 WRST C1021 RCLK WCLK VFI1D (7:0) '016_09C' IC32 IC43 5Kx8 LINE RRST VLICK L1006 WRST '016_09B' C1022 VLIEN2_ '016_09C' VLIEN1_ RCLK '016_09B' WCLK VFI2RRS_ '016_09B' VFI2WRS_...
  • Page 253 Main PCB VSD (7:0) '016_05D' VSA (14:0) '016_05B' IC33 32Kx8 SRAM VCSS_ L1007 '016_05E' VRDS_ C1023 '016_05E' VWRS_ '016_05E' VC SRAM 3-7-22 PointSource Ai1515/Vi150 (MCA/MCE) S/M...

  • Page 254: Main Pcb 4/25

    190-1 Main PCB OPD (7:0) SDB (15:0) SAB (15:1) '016_02B, 021_02A' '024_08C' '016_02A, 021_06A' IC45 IC46 OPA (10:1) '024_08C' R1101 R1102 R1103 R1104 R1105 R1106 R1107 R1108 OPDIR '004_09F' OPLEN GND GND '004_09F' IC47 DREQ1_ OPDRQ0_ '002_02D' '024_06B' DACK1_ OPDAK0_ '004_03E' '024_06F' OPRST_...
  • Page 255 190-1 Main PCB OMD (15:0) SDB (15:0) '020_02A' '023_08B' SCASH_(4:0) '004_03E' IC57 IC51 R1237 OMCAS4H_ '023_08E' R1201 R1202 IC54 OMA (18:1) R1238 AB (23:16) OMCAS3H_ '005_01B' '023_08G' '023_08E' R1203 R1219 SAB (15:1) R1204 R1239 R1220 OMCAS2H_ '020_07A' '023_08E' R1205 R1221 R1206 R1222 R1240...
  • Page 256 190-1 Main PCB ENGINE OPTION MEM. R1302 ESVCLK R1301 '014_02F, 024_06D' ESVD (7:0) '014_02E, 024_06C' R1303 R1304 R1335 R1305 R1306 CSSEL_ '004_05F' R1307 OMD (15:0) '021_05A' R1308 R1309 R1310 ECPRDY '016_09E' R1312 R1311 EPVSYNC_ '020_07F' R1314 R1313 EPHSYNC_ '020_07F' ESRDY_ R1319 '016_09F' EPTIM...
  • Page 257 190-1 Main PCB OPTION PWB OMREOUT_ R1411 '021_02E' R1412 DCLK '021_02E' R1405 ONITIOUT_ '021_02E' R1406 OPDRQ0_ '020_07D' ESVD (7:0) '023_02A' OPD (7:0) '020_06A' OPA (10:1) '020_10A' I / 0 OPTIM '021_02E' ESCINHI '023_01G' ESVCLK '023_02A' ESVSYNC_ '023_01D' ESHSYNC_ '023_01D' OLSUOUT_ '020_10F' OPHSYNC_ '020_10F'...
  • Page 258 190-1 Main PCB IDB (15:0) '018_02A' MAB (9:0) '009_02A' BITMAP MEM. IWR_ '016_10D' IRD_ '016_10D' IRAS0_ '009_02C' ICAS1_ '004_10D' ICAS2_ '004_10C' ICAS3_ '004_10C' ICAS4_ '004_10C' BIT MAP MEM I/F 3-7-27 PointSource Ai1515/Vi150 (MCA/MCE) S/M...
  • Page 259 190-1 Main PCB KPSDO '002_10F' IC60 KPSCLK OPCB '002_10F' POWER L1501 IC60 R1501 C1501 C1502 KPSDI L1502 R1502 '002_02F' IC60 KPSIGI '002_10D' KPSIGO '002_10D' +24V GND GND L1503 C1508 C1507 C1510 C1511 C1512 C1513 C1514 C1515 C1516 CONNETORS 3-7-28 PointSource Ai1515/Vi150 (MCA/MCE) S/M...

  • Page 260: Main Pcb 5/25

    190-1 Main PCB R1701 R1603 CPUX1 '002_02B' R1702 IC61 IC61 R1604 R1601 R1703 CLK32M '004_09G' R1704 IC61 R1602 IC62 R1705 R1605 CLK16M '016_10E' R1706 C1601 C1602 C1603 R1712 R1711 R1713 R1707 R1710 R1606 FXTAL '012_07F' C1604 R1709 R1708 IC61 L1601 L1602 IC62 IC61...

  • Page 261: Engine Pcb 1/12

    Engine PCB REF5V R245 C121 IC34 R445 _MSRY IC38 R244 C122 R446 _CPUADJUST VREF C125 R186 AVSS _ONW R441 _RESETOUT IC41 R442 R187 φ φ C152 AD11 1 R288 R289 XIOCS R443 SYNC AD12 2 R308 R290 _VTCCS R444 R188 R309 R291 AD13 3...

  • Page 262: Engine Pcb 2/12

    Engine PCB IC17 /RESET φ FXECLK XIOINT /LDS /XIOCS R117 R175 R147 R174 R146 R173 R145 R172 R144 R171 R143 R170 R142 CN20-1 CN20-2 SOUT CN20-3 SCLK CN20-4 CKCHG CN20-5 * Not installed 3-7-31 PointSource Ai1515/Vi150 (MCA/MCE) S/M...
  • Page 263 Engine PCB _LDS IC22 IC23 IC26 _OE1 IC26 _OE2 _OE3 IC24 _OE4 R157 ADCCLK1 ADCCLK1 ADCCLK ADCCLK2 R158 R159 ADIN1 ADIN2 R160 R161 R454 ID10 R455 ID20 R162 R453 ID11 R456 ID21 IC22 R163 R452 ID12 R457 ID22 R164 R451 ID13 R458 ID23...

  • Page 264: Engine Pcb 4/12

    Engine PCB VTC5V _PVD0 VTC5V _RES R297 C142 C143 R296 R248 C123 C124 VTC5V VTC5V VTC5V _CPRDY R249 _LDout /LDout /LDON R250 R314 LBON R502 _ADJUST PWMD0 /ADJUST R251 PWMD1 DACLK R252 PWMD2 DALD R503 PWMD3 _CPULDON R504 _PRDY PWMD4 PWMD5 PMCLK R253...

  • Page 265: Engine Pcb 5/12

    Engine PCB SVD4 SVD3 SVD5 SVD2 SVD6 SVD1 SVD7 SVD0 SHD5V SHD5V _RSTWR C164 C141 C140 SVCLK C150 R284 _SVSYNC SHD5V R324 _SHSYNC _PHSYNC SHD5V R316 C156 R315 SHD5V IC39 C155 C149 R485 WRD0 WWD0 WRD1 R486 WWD1 C163 WRD2 R487 WWD2 WRD3...
  • Page 266 Engine PCB *TP2 IC13 R113 IC18 ADIN1 – *C50 – *R95 *TP1 *R71 R176 IC11 R139 – R166 _CLAMP IC26 *TP3 R106 IC20 R115 R119 ADIN2 IC12 *C93 R110 R135 – R114 – R120 R105 *R124 R136 R179 IC19 R140 R141 –...

  • Page 267: Engine Pcb 6/12

    Engine PCB CN1-1 24VIN 24VIN CN1-2 24V-2 CN5-1 24VR CN4-1 CN1-3 24VOUT 24VOUT 24VOUT IC46 R388 CN4-2 24V-3 CN5-2 _FEED.CL PFCL R387 24V-2 CN1-4 CN4-3 EJOP SSW3 CN4-4 *D37 24V-2 CN5-3 FET6 CN1-5 24V-3 IC48 24VIN CN4-5 24VIN R383 CN5-4 _REG.CL R390 CN4-6...
  • Page 268 Engine PCB * D15 * R328 SCAN0 CN6-1 _SCAN0 * R436 * D40 _SCAN4 SCAN4 CN8-1 SCAN4 CN9-1 _SCAN4 PSSW1 CN6-2 CN9-2 _SENS3 _SENS0 DEV A BYPPSW1 CN8-2 CN6-3 _SENS0 CN9-3 _SENS4 DEV B _SENS1 BYPPSW2 CN8-3 CN6-4 SCAN0 _SENS1 CN9-4 _SENS5 DEV C...
  • Page 269 Engine PCB CN10-1 CN13-1 EL REM1 CN14-1 _INVERTER CN10-2 R429 ODSW CN13-2 _ORGSW R430 EL REM2 CN14-2 CN10-3 OSSW _TBLSZ1 CN13-3 CN14-3 24V-2 CN10-4 ISUH REM CN13-4 CN14-4 CN10-5 FET1 24V-2 _LMPHT R431 CN13-5 24V-2 CN10-6 CN14-5 R432 CN10-7 _TBLSZ2 CN14-6 CN10-8 CN13-6...

  • Page 270: Engine Pcb 7/12

    Engine PCB CN16-1 CN22-1 24V-2 CN18-1 CN16-2 *R57 CN18-2 24V-2 R367 IC46 IC44 IC37 IC30 IC44 CN22-2 _YOBI1 CN16-3 _PFCL1F STPFCL1 CN18-3 *IC5 IC46 *R55 CN16-4 STPFCL2 CN18-4 _PFCL2F C177 C137 C107 R363 CN22-3 _YOBI2 IC46 IC44 CN16-5 CCDCLK1 *IC5 CCDCLK1 STPFCL3 CN18-5...
  • Page 271 Engine PCB R300 R357 IC27 R437 IC44 IC27 CN19-1 SVCLK SVCLK _PVSYNC CN19-16 _PVSYNC EPRDY CN19-31 EPRDY R352 R353 R345 CN19-2 CN19-17 CN19-32 _CMD IC32 C178 R344 IC37 R412 IC44 IC31 R280 IC32 CN19-3 SVD0 SVD0 _PHSYNC _PHSYNC CN19-18 _STS CN19-33 R338 R395...

  • Page 272: Engine Pcb 8/12

    Engine PCB IC15 φ *R107 _TIMER *R96 _TIMERCS R108 IC28 *IC21 DALD DACLK *L10 DBVR SMVR *C53 *C52 *R150 _LMPHT *R81 R109 CW_CCW 3 _ 4 REF5V _ MO _RES TKVR CLK_OUT *R125 – OUT1 GRIDVR *R126 OUT2 IC29 R156 R155 OUT3 *R128...

  • Page 273: Motor Pcb

    Motor PCB MOTSEL CON1-1 PGND CON1-12 CON1-11 PGND CON1-8 PGND CON1-7 PGND CON2-1 CON1-10 CON2-4 CON2-3 ADFM A CON1-9 SGND CON2-2 SGND ADFM A MOT A CON1-6 CON2-6 ADFM B MOT A CON1-5 CON2-5 ADFM B MOT B CON1-4 MOT B CON1-3 CON3-1 CON3-4...

  • Page 274: Operation Unit Pcb

    Operation unit PCB TR15 LED17 LED9 LED1 TR16 LED18 LED10 LED2 TR17 SW10 SW11 SW12 SW13 SW14 SW15 SW16 GND C TR18 SW17 SW18 SW19 SW20 SW21 SW22 SW23 SW24 LED19 LED11 LED3 TR19 RESET AVRBF SW25 SW26 SW27 SW28 SW29 SW30 SW31...

  • Page 275: Connection Diagram

    Connection diagram +12V LIVE -12V VOLUME ( CN2 ) ( CN3 ) 2 PG 24VIN RELAY 3 H REM 24VIN RY24V 24VIN 4 R REM 24V-2 24VOUT INLET ( CN5 ) PSPCB (SP) CORE 24V-3 24V-2 ( 5V ) 1 LIVE 24V-3 NOISE FILTER...
  • Page 276 MITA COPYSTAR SOUTH AMERICA S.A. Av. Mitre 1345 Florida (1602) Pcia, Buenos Aires, Argentina. TEL : (54) 1-730-1070 FAX : (54) 1-760-2071 ©1998 MITA INDUSTRIAL CO., LTD. MITA and are registered trademarks of MITA INDUSTRIAL CO., LTD. Printed in U.S.A.

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