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Mita PointSource Ai 5555 Service Manual

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PointSource
Ai 5555
SERVICE
MANUAL
Published in July '98
5A870761
Revision 1

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Summary of Contents for Mita PointSource Ai 5555

  • Page 1 PointSource Ai 5555 SERVICE MANUAL Published in July ’98 5A870761 Revision 1...
  • Page 2 SERVICE MANUAL PointSource Ai 5555...
  • Page 3 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 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 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 • 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: Table Of Contents

    CONTENTS CONTENTS 1. PROCESS EXTERNAL SECTION ........... 2-C-1 [1] Composition ..........2-C-1 OUTLINE AND COMPOSITION ......... 1-1 IMAGE READ MECHANISM ........1-2 [2] Disassembly and Re-assembly ....2-C-1 [1] Outline ............1-2 DRIVE SECTION ........... 2-D-1 IMAGE PROCESSING ..........1-3 [1] Composition ..........
  • Page 10 CONTENTS-1 CONTENTS TONER SUPPLY UNIT ........... 2-J-1 CONVEYANCE SECTION ........2-R-1 [1] Composition ..........2-J-1 [1] Composition ..........2-R-1 [2] Mechanisms ..........2-J-1 [2] Mechanisms ..........2-R-1 [3] Disassembly and Re-assembly ....2-J-2 [3] Disassembly and Re-assembly ....2-R-2 [4] Toner Level Detection Control ....2-J-3 [4] FM14 (conveyance suction) Control ..
  • Page 11 CONTENTS-1 CONTENTS 4. ADJUSTMENT 47 MODE ..............4-55 [1] 47 /Multi Mode Setting Method ...... 4-55 HOW TO USE THE ADJUSTMENT SECTION ..4-1 [2] Initial Setting ..........4-57 [1]Structure ............4-1 [3] Adjustment Mode List ........4-57 ADJUSTMENTS WHEN REPLACING PARTS ..4-1 [4] L Detection Adjustment ........
  • Page 12 CONTENTS 5. RADF PRODUCT SPECIFICATIONS ........5-1 CENTER CROSS-SECTIONAL DRAWING ....5-2 EXTERNALS .............. 5-2 DRIVE SECTION ............5-3 PAPER FEED SECTION ..........5-4 [1] Composition ........... 5-4 [2] Mechanisms ........... 5-4 [3] Disassembly and Re-assembly ...... 5-5 [4] Paper Feed Control ........5-11 CONVEYANCE SECTION ........
  • Page 13 CONTENTS 1. PROCESS OUTLINE AND COMPOSITION ......... 1-1 IMAGE READ MECHANISM ........1-2 [1] Outline ............1-2 IMAGE PROCESSING ..........1-3 [1] Outline ............1-3 [2] Analog Processing ......... 1-3 [3] A/D Conversion ..........1-3 [4] Shading Correction ........1-3 [5] Brightness/Density Conversion ......

  • Page 14: Outline And Composition

    PROCESS OUTLINE AND COMPOSITION Image read unit Charging corona unit Image write unit Polygon mirror Image processing unit Developing unit Fixing unit Separation Cleaning Transfer OPC drum corona unit unit corona unit Fig.1 In this digital copying machine, optical data (light beam) reflected from the original is converted into electrical signals, subjected to image processing, then converted back into optical data (light beam) and directed onto the drum.

  • Page 15: Image Read Mechanism

    PROCESS IMAGE READ MECHANISM Light source (halogen lamp) 2nd mirror Lens 3rd mirror 1st mirror Image sensor Fig.3 [1] Outline A halogen lamp is used as the light source, and the light from the lamp is directed onto the original. The light reflected off the original is reflected by the 1st, 2nd and 3rd mirrors shown in Fig.1, then passed through the lens and directed onto the CCD image sensor.

  • Page 16: Image Processing

    PROCESS PROCESS-1 IMAGE PROCESSING Brightness/density CCD image Copy γ correction conversion, Shading correction sensor conversion AE processing, Text/ dot pattern judgement, Filter/ A/D Board magnification processing Reversal processing Write density Image Processing Board Selector/SGU 2-beam control control Image write Data compression Memory Error diffusion and expansion...

  • Page 17: Brightness/Density Conversion

    PROCESS [5] Brightness/Density Conversion [7] Text/Dot Pattern Identification The signal resulting from shading correction corresponds to In order to copy an original under the optimum conditions, the the light reflected off the original, hence it is generally called a text/dot pattern identification section judges whether the read brightness signal.

  • Page 18: Magnification Processing

    PROCESS-1 PROCESS [9] Magnification Processing 2. Horziontal magnification change processing during reduction In an analog machine, the vertical magnification is changed by As shown in the example of Fig.11, if the pixel data obtained changing the scanning speed of the exposure unit, and horizontal when the original is read by the CCD is D to D , the positions...

  • Page 19: Reversal Processing

    PROCESS-1 PROCESS [10] Reversal Processing [15] Image Compression Processing This function reverses the input brightness data in order to This processing function stores compressed image data in the reverse black and white when the reverse copy mode is memory to enable a large quantity of image data to be stored selected.

  • Page 20: Image Write

    PROCESS-1 PROCESS IMAGE WRITE CY2 lens fθ lens unit Polygon mirror 1st mirror 3rd mirror 2nd mirror Stepping motor CY1 lens Compression prism 1 Collimator lens unit 1 Beam combining prism Semiconductor laser LD1 Fine adjustment prism 2 Compression prism 2 Glass cover Collimator lens unit 2 Index mirror...

  • Page 21: Collimator Lens

    PROCESS [2] Collimator lens [6] Polygon mirror Figure 16 shows the function of the collimator lens. This lens This is a multi-sided mirror which converts the laser beam into is used to form the light which diverges from a point source into a scanning beam.

  • Page 22: Cylindrical Lenses

    PROCESS PROCESS-1 [8] Cylindrical Lenses Two lenses, cylindrical lens 1 (Cy1) and cylindrical lens 2 ( Cy2 ), are used to eliminate the tilt error of the polygon mirror. Cylindrical lenses 1 and 2 are installed before and after the polygon mirror, as shown in Fig.21.

  • Page 23: Image Formation

    PROCESS IMAGE FORMATION [3] Developing [1] Charging Charging corona unit Fig.22 Fig.24 A negative charging method using a Scorotron is employed. A Negatively charged toner adheres to the parts of the surface of constant negative voltage is applied to the charging plate and the drum where charge was erased during the exposure back plate in order to maintain the potential of the drum process.

  • Page 24: Separation

    PROCESS [5] Separation [7] PCL Drum Separation corona unit Fig.26 Fig.28 The separation corona unit erases the charge on the paper by The PCL erases the potential remaining on the surface of the applying an AC discharge from the back of the paper, thus drum.

  • Page 25: Main Body

    CONTENTS 2. MAIN BODY DEVELOPING UNIT ..........2-I-1 [1] Composition ..........2-I-1 OUTLINE OF THE SYSTEM ........2-A-1 PRODUCT SPECIFICATIONS ........ 2-A-2 [2] Mechanism ........... 2-I-1 CENTER CROSS-SECTION ........2-A-4 [3] Disassembly/Assembly ........ 2-I-2 DRIVE SYSTEM DIAGRAM ........2-B-1 [4] M3 (developing drive) Control ...... 2-I-4 [1] Main Drive ...........
  • Page 26 CONTENTS ADU PAPER FEED/CONVEYANCE SECTION ..2-Q-1 [1] Composition ..........2-Q-1 [2] Mechanisms ..........2-Q-1 [3] Disassembly and Assembly ....... 2-Q-3 [4] Paper Feed/Reversal Control ....2-Q-7 [5] Conveyance Control ........2-Q-8 CONVEYANCE SECTION ........2-R-1 [1] Composition ..........2-R-1 [2] Mechanisms ..........
  • Page 27 This section covers the structure, functions, operation and method of disassembling and assembling the machine. Observe the following precautions when performing disassembly and assembly work. 1. Be sure to unplug the power cord before working on the machine. 2. Perform all reassembly work by reversing the order in which the component was disassembled, unless otherwise specified.

  • Page 28: Outline Of The System

    MAIN BODY OUTLINE OF THE SYSTEM Finisher F-8220 Video interface kit Key counter Large capacity tray ST-3500 Printer controller Tandem kit Network card 2 - A - 1...

  • Page 29: Product Specifications

    MAIN BODY MAIN BODY-1 PRODUCT SPECIFICATIONS 1. Type Special functions: Sheet/Cover Interleave, Chapter, Combination (2-in-1, 4-in-1, 8-in- Type: Console type 1, overlay), Booklet, Transpar- (floor-mounted type) ency Interleave, Image Insert, Copying method: Indirect electrostatic method Book Copy, Mixed Original, Text Original table method: Fixed Photo Enhance (text/photo/pen- Photosensitive...
  • Page 30 MAIN BODY-1 MAIN BODY Machine dimensions 28.6" 28 " 6. Maintenance Maintenance interval: Every 150,000 copies 7. Copy Materials Developer Toner Drum: OPC drum (φ 80 mm) 8. Machine Operating Environment Temperature:10 to 30°C/50 to 86°F Humidity: 10 to 80% RH These specifications are subject to change without notice.

  • Page 31: Center Cross-Section

    MAIN BODY CENTER CROSS-SECTION Charging Exposure lamp corona unit Cleaning section Image read unit Image write unit Image processing section Developing unit Fixing unit Paper feed section Upper tray ADU paper exit/ conveyance unit Conveyance unit 2nd paper feed unit Lower tray Transfer corona unit ADU paper feed/...

  • Page 32: Drive System Diagram

    DRIVE SYSTEM DIAGRAM DRIVE SYSTEM DIAGRAM [1] Main Drive Conveyance belt Toner conveyance screw Main Motor (M1) Cleaner clutch (MC 10) 2nd paper feed roller Timing belt 2nd paper feed MC (MC3) 2 - B - 1...

  • Page 33: Drum/Developing Drive

    DRIVE SYSTEM DIAGRAM [2] Drum/Developing Drive Drum Drum motor (M4) Agitator wheel Developing sleeve Agitator screw motor (M35) Developing drive motor (M3) Agitator screw 2 - B - 2...

  • Page 34: Paper Feed Drive

    DRIVE SYSTEM DIAGRAM [3] Paper Feed Drive Upper tray motor (M17) Lower tray motor (M18) By-pass roller By-pass paper feed roller Double feed prevention roller Paper feed rollers Feed rollers Double feed prevention rollers 2 - B - 3...

  • Page 35: Adu Paper Feed/Conveyance Drive

    DRIVE SYSTEM DIAGRAM [4] ADU Paper Feed/Conveyance Drive Timing belt Paper exit rollers Timing belt ADU timing CL (CL153) Timing belt Timing belt Paper exit rollers ADU reversal CL (CL152) ADU paper feed motor (M151) Conveyance roller ADU paper feed CL Reversal roller (CL151) 2 - B - 4...

  • Page 36: Adu Paper Exit/Conveyance Drive

    DRIVE SYSTEM DIAGRAM [5] ADU Paper Exit/Conveyance Drive Paper exit rollers Timing belt Conveyance rollers Timing belt 2 - B - 5...

  • Page 37: 1000-Tray Paper Feed/Conveyance Drive

    DRIVE SYSTEM DIAGRAM-1 DRIVE SYSTEM DIAGRAM [6] 1000-Tray Paper Feed/Conveyance Drive Conveyance roller (upper) Conveyance (CL 3) Paper feed roller Conveyance roller (lower) Feed roller Double feed prevention roller LCT first feed MC (CL 1) 2 - B - 6...

  • Page 38: 1500-Tray Paper Feed/Conveyance Drive

    DRIVE SYSTEM DIAGRAM-1 DRIVE SYSTEM DIAGRAM [7] 1500-Tray Paper Feed/Conveyance Drive Timing belt Horizontal conveyance Paper feed roller rollers Feed roller Timing belt Double feed prevention roller LCT 1st paper feed CL (CL2) LCT paper feed motor (M140) 2 - B - 7...

  • Page 39: External Section

    EXTERNAL SECTION EXTERNAL SECTION [1] Composition Main switch Operation panel Left side upper Front door cover By-pass feed table Paper exit tray Paper feed Upper tray conveyance Lower tray door conveyance Right side door upper cover Rear cover LCT-1000 Left side tray conveyance door lower cover...
  • Page 40 EXTERNAL SECTION 2. Replacing the developing suction filter 3. Replacing the dust proof filter a. Procedure a. Procedure (1) Remove the rear cover. (1) Open the ADF. (2) Remove the lock, open the filter box, and remove the (2) Remove the two set screws, then remove the glass developing suction filter.
  • Page 41 EXTERNAL SECTION (6) Remove the dustproof filter, then install the new dustproof filter. Dust proof filter (7) Install the other parts in the reverse sequence to removal. 2 - C - 3...

  • Page 42: Drive Section

    DRIVE SECTION DRIVE SECTION [1] Composition Drum motor (M4) Agitator screw motor (M35) Main motor (M1) Developing drive motor (M3) Drum drive unit [2] Mechanisms a. Procedure (1) Remove the drum unit from the main body. (Refer to Mechanism Method "Drum unit section".) Drum drive Gear drive (dedicated motor)
  • Page 43 DRIVE SECTION DRIVE SECTION-1 (4) Disconnect the relay connector and the four connec- (4) Remove the four set screws, then remove the paper tors (CN16, 204, 205 and 324), then remove the cable feed drive plate. from the wiring clamp. (5) Remove the four set screws, slide the main motor unit Set screws Paper feed drive plate...

  • Page 44: M1 (Main) Control

    DRIVE SECTION-1 DRIVE SECTION [4] M1 (main) Control [5] M4 (drum) Control 40VDC 88-5 24VDC 99-2 PGND 88-3 PGND 99-5 DCPS DCPS 5VDC 30-A8 SGND 30-A9 5VDC 30-A1 M4 CONT 30-A10 M1 CONT 30-A3 M4 H/L 30-B6 M1 PLL 30-A4 M4 CLK 30-A11 SGND...

  • Page 45: Read Section

    READ SECTION READ SECTION [1] Composition Exposure unit CCD unit Front Optics cooling fan (FM2) Optics drive wire A/D converter board V mirror unit (ADB) (2nd and 3rd mirrors) Optics rail (R) [2] Mechanisms [3] Disassembly and Re-assembly 1. Screws that must not be removed Mechanism Method a.
  • Page 46 READ SECTION 2. Removing and Re-installing the CCD Unit (4) Remove the eight set screws, then remove the lens Caution: Be sure that the power cord has been unplugged light blocking cover 1. from the power outlet. Set screws Caution: Be sure to perform image adjustment after installing the CCD unit.
  • Page 47 READ SECTION 3. Replacing the Exposure Lamp (8) Disconnect the two connectors (CN420 and 412). Caution: Be sure that the power cord has been unplugged from the power outlet. Electronic RDH DO NOT touch the glass of the exposure lamp with bare hands.
  • Page 48 READ SECTION 4. Removing and Re-installing the Exposure Unit (3) Move the exposure unit to the notch in the main body Caution: Be sure that the power cord has been unplugged frame on the paper exit side. from the power outlet. (4) Remove the set screw, then remove the wiring fixing Caution: plate and disconnect the connector (CN384).
  • Page 49 READ SECTION 5. Installing the optics wire (6) Move the V mirror unit to the paper feed side, then Caution: insert the Optics positioning jigs from the front so as to When winding the wire around the pulley, be sure to fix the V mirror unit.
  • Page 50 READ SECTION (8) The exposure unit mounting piece is installed on the Caution: optics wire in advance. The position of the mounting Ensure that there is a metal bead at the end of the outer piece differs depending upon whether it is on the front wire, and a wire terminal at the end of the inner wire.

  • Page 51: M12 (Optics Drive) Control

    READ SECTION-1 READ SECTION [4] M12 (optics drive) Control (10) After winding the outer wire, fix it to the wire stopper via the outer side of pulley 1 and the V mirror pulley. Note: There are two grooves in the wire stopper. Ensure that M12 CLK 223-1 224-1...
  • Page 52 READ SECTION b. Scanning operation of the exposure unit f. Other operations Scanning speed (1) During copying a) When manual density has been selected Magnification Scanning speed 1 During a platen copy operation Forward 370 mm/sec (life size) Return 1520 mm/sec c.
  • Page 53 READ SECTION 2 During an ADF copy operation (1-1) b) AES mode (Exposure unit) (Original conveyance) (Original conveyance) (Exposure unit) 1st original feed AES scan Prescan Copy button pressed Stop AES scan Stop Exposure scan (rear half) Exposure scan 2nd original feed AES scan Stop Exposure scan (front half)
  • Page 54 READ SECTION (8) M12 PLL (OPMDB → CB) (2) M12 CONT (CB → OPMDB) [L] is output when M4 reaches the specified speed. M12 ON/OFF control signal (9) M12 MAG A/A' (M12 → OPMDB) M12 MAG B/B' (M12 → OPMDB) [L]: M12 ON M12 MAG C/C' (M12 →...

  • Page 55: Exposure Control

    READ SECTION [5] Exposure Control 2. Signals a. Input signals (1) L1 FB (CVR → CB) This signal informs the CB of the lit or unlit state of L1. [L]: L1 ON [H]: L1 OFF or broken (2) RL1 INHIBIT (CVR → CB) AC (H) L1 CONT 60-A2...

  • Page 56: Original Read Control

    READ SECTION [6] Original Read Control [7] APS Control 481-A1 425-A1 420-40 411-1 5VDC 9-B8 9-B4 143-3 PS44 PS44 9-B5 143-2 137-3 PS45 PS45 9-B7 137-2 481-A12 425-A12 5VDC 22-A5 481-B1 425-B1 PS40 22-A6 134-3 PS41 PS41 22-A8 134-2 420-1 411-40 130-3 PS42...
  • Page 57 READ SECTION (3) PS45 (PS45 → CB) Original cover opening/closing detection signal Activates or deactivates the APS function. APS sensor [L]: ON (APS function activated) Paper size PS41 PS42 [H]: OFF (APS function deactivated) A3/11" x 17" B4/8 " x 14" A4R/8 "...

  • Page 58: Aes Control

    READ SECTION READ SECTION-1 [8] AES Control (2) ADF mode (1-1) The read operation takes place from the point at which PS2 (ADF-AES) goes ON during the return scan of the exposure unit, either while the original is being con- 481-A1 425-A1 420-40...

  • Page 59: Write Unit

    WRITE UNIT-1 WRITE UNIT WRITE UNIT [1] Composition Index mirror Collimator lens unit 1 Cylindrical lens 2 Index sensor board 3rd mirror Laser driver board 1 Polygon mirror Cylindrical lens 1 f θ lens Laser driver board 2 Collimator lens unit 2 Polygon driver board 2nd mirror...

  • Page 60: Disassembly And Re-Assembly

    WRITE UNIT WRITE UNIT-1 [3] Disassembly and Re-assembly *2: Positioning Each laser beam is positioned by the compression prism 1. Removing and Re-installing the Write Unit and the fine adjustment prism. Caution: Be sure that the power cord has been unplugged This is not adjustable in the field.
  • Page 61 WRITE UNIT (4) Disconnect the four connectors (CN421, 422, 423 and (7) Remove the eight set screws, then remove the write 424) from the image processing board (IPB). unit cover. Image processing board (IPB) Write unit cover screws Connector Set screw Connector Set screws Connector...

  • Page 62: M5 (Polygon) Control

    WRITE UNIT 2. Removing and Re-installing the Electronic RDH [4] M5 (polygon) Control Board Caution: Be sure that the power cord has been unplugged from the power outlet. a. Procedure (1) Remove the top cover on the left side. (four screws) M5 CONT 322-2 320-2...
  • Page 63 WRITE UNIT 2. Signals d. PMDB output signal (1) VMAG- (PMDB → M5) a. CB output signals (1) M5 CONT (CB → PMDB) GND line to the rotor position sensors (magnetic sen- This signal controls the ON/OFF state of M5. sors) contained in M5 (2) M5 DRIVE A to C (PMDB →...

  • Page 64: Image Write Control

    WRITE UNIT [5] Image Write Control 425-A2 481-A2 IP REQ M40 PWR A 424-1 RESET 425-A3 481-A3 M40 PWR B 424-2 425-A4 481-A4 INDEX M40 DRIVE A 424-3 425-A5 481-A5 TXA 1 M40 DRIVE A' 424-4 MEE V/V 425-A6 481-A6 M40 DRIVE B 424-5 M V/V...
  • Page 65 WRITE UNIT-1 WRITE UNIT The following processing is performed by the E-RDH determines the laser write start timing for each scan in (electronic RDH processing board). the axial direction of the drum. a) Error diffusion processing b) Data compression and de-compression b) Direction of rotation of drum c) Image rotation 1) When very high is selected...
  • Page 66 WRITE UNIT (8) MIND CHG (CB → IPB) (13) LD2 IRCLK (IPB → LDB2) LD2 APC clock signal This signal selects the index signal. (14) LD2 DACK (IPB → LDB2) [H]: External index signal [L]: Internal index signal LD2 MPC signal (15) LD2 DI (IPB →...

  • Page 67: Drum Unit

    DRUM UNIT DRUM UNIT [1] Composition Drum Charging corona unit Developing unit Charging corona unit Cleaning unit Separation claws Separation claw solenoid Drum Developing unit Cleaning unit Transfer and separation corona unit [2] Mechanisms *2: Ratchets The thick paper conveyance ability has been improved by Mechanism Method the use of five ratchets on the board cover.

  • Page 68: Disassembly And Re-Assembly

    DRUM UNIT-1 DRUM UNIT [3] Disassembly and Re-assembly 1. Removing and Re-installing the Drum Unit Drum cover Caution: Be sure that the power cord has been unplugged from the power outlet. Caution: The drum in this machine is much more sensitive than the drums used in previous machines.
  • Page 69 DRUM UNIT-1 DRUM UNIT 2. Removing and Re-installing the Drum Caution: Be careful not to touch the drum or the cleaning blade Drum fixing coupling with bare hands, or damage these parts. Cleaner idler gear When leaving the drum to stand, be sure to place the drum cover over it and store it in a dark place.
  • Page 70 DRUM UNIT 5. Removing and Re-installing the PCL (6) Remove the spring and the E ring from the separation claw unit. a. Procedure (7) Remove the three set screws of the claws (one screw (1) Remove the charging corona unit. (Refer to "Corona each), then remove the three claws.

  • Page 71: Pcl/Tsl Control

    DRUM UNIT [4] PCL/TSL Control [5] Separation Claw Control 24VDC 5-A3 21-5 24VDC 20-1 24VDC 5-B9 PCL CONT 5-A4 21-6 PCL CONT 20-2 SD4 DRIVE 5-B10 24VDC 62-B1 TSL CONT 62-B9 The PCL (precharging exposure lamp) and TSL (transfer sync The separation claws are driven by SD4 (separation claws), exposure lamp) consist of LEDs which are controlled by the CB and are controlled by the CB (control board).

  • Page 72: Paper Guide Plate Control

    DRUM UNIT [6] Paper Guide Plate Control 24VDC 62-A1 84-1 PGND 62-A2 84-2 GP CONT 62-B11 84-8 A constant voltage is applied to the paper guide plate in order to prevent toner from adhering to it. 1. Operation a. ON/OFF timing ON and OFF in synchronism with M4 (drum).

  • Page 73: Corona Unit Section

    CORONA UNIT SECTION-1 CORONA UNIT SECTION CORONA UNIT SECTION [1] Composition <Charging corona unit> <Transfer and separation corona unit> Charging wire cleaning motor (M7) Charging corona unit Drum board Plunging prevention plate Charging wire cleaning knob Separation corona unit Transfer corona unit Transfer and separation wire cleaning motor (M8)

  • Page 74: Disassembly And Re-Assembly

    CORONA UNIT SECTION 2. Removing and Re-installing the Transfer and *2: Cleaning the transfer and separation wires Separation Corona Unit The transfer and separation corona unit has a wire cleaner. The transfer and separation wire cleaning motor causes Caution: Be sure that the power cord has been unplugged the transfer and separation wire cleaning blocks to move from the power outlet.
  • Page 75 CORONA UNIT SECTION-1 CORONA UNIT SECTION 3. Removing and re-installing the Plunging (3) Remove dirt from the charging control plate by gently Prevention Plate dabbing it with a piece of cloth moistened with drum a. Procedure cleaner, then remove any remaining dirt with a blower (1) Remove the transfer and separation corona unit brush.
  • Page 76 CORONA UNIT SECTION 6. Replacing the Charging Wire 7. Replacing Charging Wire Block A a. Procedure a. Procedure (1) Remove the charging corona unit. (1) Remove the charging corona unit. (2) Remove the charging control plate. (2) Remove the charging control plate. (3) Remove the charging wire cleaning block B (3) Remove the charging wire cleaning block B.
  • Page 77 CORONA UNIT SECTION 9. Replacing the Transfer and Separation Wires 10.Removing/Re-installing the TSL unit a. Procedure a. Procedure (1) Remove the transfer and separation corona unit. (1) Remove the 2nd paper feed unit from the main body (2) Remove the plunging prevention plate. (Refer to the item on the paper feed section for the (3) Remove the spark arrestor plate (front).

  • Page 78: Charging Control

    CORONA UNIT SECTION (3) G SHIFT (CB → HV1) [4] Charging Control The charging grid voltage output level is controlled by analog signals from the CB. G SHIFT output range 4 to 10 V Grid voltage output range –500 to –900 V 24VDC 62-A1 84-1...

  • Page 79: Transfer/Separation Control

    CORONA UNIT SECTION (3) S CONT (CB → HV2) [5] Transfer/Separation Control Separation corona unit ON/OFF control signal. When this signal is [L], the separation corona unit is (4) S SHIFT (AC) (CB → HV2) Separation corona unit output level control signal. This signal controls the separation corona unit output 62-B10 87-3...

  • Page 80: M7 (Charging Wire Cleaning) Control

    CORONA UNIT SECTION [6] M7 (charging wire cleaning) Control 2. Signals a. Output signals (1) M7 DRIVE 1,2 (CB → M7) M7 drive signals The drive direction of M7 is controlled by changing over the drive current direction of these two signals. Status M7 DRIVE 1 M7 DRIVE 2 M7 DRIVE 1...

  • Page 81: M8 (Transfer/Separation Wire Cleaning) Control

    CORONA UNIT SECTION [7] M8 (transfer/separation wire cleaning) 2. Signals a. Output signals Control (1) M8 DRIVE 1,2 (CB → M8) M8 drive signals The drive direction of M7 is controlled by changing over the drive current direction of these two signals. Status M8 DRIVE 1 M8 DRIVE 2 Cleaning forward stroke...

  • Page 82: Developing Unit

    DEVELOPING UNIT DEVELOPING UNIT [1] Composition Developing regulating plate Splash prevent sheet Developing unit cover bridge (upper) Developing sleeve Toner density sensor (TDS) Developing sleeve Agitator wheel Agitator screws Toner suction duct [2] Mechanism 2. Flow of developer The developer inside the developing unit is supplied to the Mechanism Method developing sleeve by the agitator wheel, and maintained at...

  • Page 83: Disassembly/Assembly

    DEVELOPING UNIT [3] Disassembly/Assembly 3. Replacing the developer Caution: 1. Screws that must not be removed When replacing the developer, take care that dirt does (1) The two set screws of the developer regulation plate not become mixed with it. (2) The set screw for adjusting the magnet angle If the developing sleeve is rotated, the developing gear rotates in the counterclockwise direction.
  • Page 84 DEVELOPING UNIT (4) Tilt the developing unit, then rotate the developing gear (8) Rotate the developing gear in the counterclockwise in the counterclockwise direction until all of the devel- direction, and confirm that the developer bristles along oper adhering to the inside of the developing unit and the entire length of the developing sleeve.

  • Page 85: M3 (Developing Drive) Control

    DEVELOPING UNIT-1 DEVELOPING UNIT 4. Removing and Re-installing the Toner Control [4] M3 (developing drive) Control Board Unit a. Procedure (1) Remove the drum unit from the main body. (2) Remove the three set screws, then remove the board cover. 40VDC 88-4 DCPS...

  • Page 86: M35 (Agitator Screw) Control

    DEVELOPING UNIT [5] M35 (agitator screw) Control [6] Developing Bias Control 24VDC 62-A1 84-1 BIAS 24VDC 99-2 PGND 62-A2 84-2 PGND 99-5 B CONT 62-A3 84-3 B SHIFT 62-A6 84-6 DCPS 62-A9 84-9 F SIG M35 PLL 30-A6 M35 DRIVE 30-A7 M35 (agitator screw) is controlled by the CB (control board).

  • Page 87: Toner Density Control

    DEVELOPING UNIT [7] Toner Density Control (2) During a copy operation The relationship between the TDS output voltage (TDS ANG) and the toner supply time is as follows. TDS output voltage Toner supply time 2 V or lower 0 sec 99-2 24VDC M10 PLL...

  • Page 88: Dmax Control

    DEVELOPING UNIT [8] Dmax Control 2. Signals a. Input signals (1) Dmax sig (TCSB → CB) Output voltage of the Dmax value detection sensor on the TCSB 5VDC 30-A8 99-2 24VDC SGND 30-A9 99-5 PGND Reference voltage: 1.5 V MA CONT 30-A10 (2) Dmax MONI (TCSB →...

  • Page 89: Gradation Correction Control

    DEVELOPING UNIT [9] Gradation Correction Control (1) Contents of implementation Exposure is performed while the laser exposure is varied over several steps, and development is per- formed at the sleeve speed resulting from Dmax cor- 5VDC 30-A8 99-2 24VDC rection. SGND 30-A9 99-5...

  • Page 90: Fm30 (Developing Suction) Control

    DEVELOPING UNIT-1 DEVELOPING UNIT (5) M3 CLK (CB → M3) [10] FM30 (developing suction) Control Reference clock signal for controlling the speed of M3 (6) M3 H/L (CB → M3) M3 rotational speed control gain switching signal [L]: Low speed range [H]: High speed range (7) M4CONT (CB →...

  • Page 91: Toner Supply Unit

    TONER SUPPLY UNIT-1 TONER SUPPLY UNIT TONER SUPPLY UNIT [1] Composition Toner supply door Toner box Toner supply motor (M10) Toner level detecting sensor (TLD) Shutter Toner conveyance screw [2] Mechanisms *2: Toner supply shutter When installing the toner cartridge, move the toner supply Mechanism Method unit forward.

  • Page 92: Disassembly And Re-Assembly

    TONER SUPPLY UNIT TONER SUPPLY UNIT-1 [3] Disassembly and Re-assembly (4) Close the toner supply unit, then remove the E ring. (5) Pull the shaft out toward the bottom, then remove the 1. Removing and Re-installing the Toner Supply toner supply unit. Unit a.

  • Page 93: Toner Level Detection Control

    TONER SUPPLY UNIT [4] Toner Level Detection Control 12VDC 22-B3 22-B4 SGND 22-B5 OB CLOCK 3-B3 212-4 OB DATA 3-B4 212-5 OB LATCH 3-B5 212-6 Toner level detection control is done by the TLD (toner level detecting sensor) and the CB (control board). 1.

  • Page 94: Cleaning/Toner Recycle Unit

    CLEANING/TONER RECYCLE UNIT-1 CLEANING/TONER RECYCLE UNIT CLEANING/TONER RECYCLE UNIT [1] Composition Toner recycle screw Cleaning blade Toner guide roller Toner conveyance screw Toner conveyance screw Cleaning blade [2] Mechanisms Once the drum has been coated with setting powder, carry out the following work before installing the drum Mechanism Method unit on the main body.
  • Page 95 CLEANING/TONER RECYCLE UNIT a. Procedure (6) Remove the set screw, then remove the cleaning blade (1) Open the front door, then remove the drum unit. from the blade mounting plate. (2) Remove the charging corona unit. (7) Remove the blade spacer from the cleaning blade. (3) Remove the two set screws, then remove the cleaner cover.
  • Page 96 CLEANING/TONER RECYCLE UNIT-1 CLEANING/TONER RECYCLE UNIT Note: Before removing the drum, rotate cleaner idler gear B 2. Removing and Re-installing the Guide Roller counterclockwise in order to prevent toner from drop- Caution: ping to the bottom of the unit, and also remove any When installing the guide roller, it is necessary to set toner between the drum and the guide roller.

  • Page 97: Mc10 (Cleaner) Control

    CLEANING/TONER RECYCLE UNIT CLEANING/TONER RECYCLE UNIT-1 [4] MC10 (cleaner) Control (6) Clean any toner that has dropped off the guide roller. (7) Install the drum, then insert the centering jigs into both ends of the drum. MC10 DRIVE 30-B2 MC10 Drum 24VDC 30-B1...

  • Page 98: Paper Feed Unit

    PAPER FEED UNIT PAPER FEED UNIT [1] Composition 2nd paper feed clutch By-pass feed roller 2nd paper feed roller Double feed prevention roller By-pass feed roller Feed roller Upper tray motor Paper feed motor Paper feed roller By-pass plate Lower tray motor Double feed prevention roller...
  • Page 99 PAPER FEED UNIT *1: Swivel roller *3: Paper up-down base release operation The paper feed direction and the Tray loading direction are When the tray is being removed, the projection on the right at right angles to each other. Consequently, if the feed side of the tray strikes the paper up-down base release lever, causing the paper lift-up gear to be disengaged by roller is fixed, it will touch the paper when the Tray is...

  • Page 100: Disassembly And Re-Assembly

    PAPER FEED UNIT-1 PAPER FEED UNIT [3] Disassembly and Re-assembly *5: Remaining paper indication The amount of paper remaining in the tray can be checked 1. Removing and Re-installing the Paper Feed roughly by looking through the remaining paper indicator Unit window.
  • Page 101 PAPER FEED UNIT 2. Removing and Re-installing the By-pass Feed (4) Remove the by-pass feed roller from the paper feed Base drive shaft. a. Procedure (5) Remove the stop ring, then remove the paper feed roller. (1) Remove the paper feed unit. (2) Remove the two set screws, disconnect the conector (6) Remove the rubber (paper feed rubber, paper supply then remove the by-pass feed base.
  • Page 102 PAPER FEED UNIT (4) Remove the four set screws, then remove the by-pass (8) Remove the E ring of front side, then remove the double feed drive gear (white). feed top plate. (9) Remove the bearing and double feed drive gear (black). Set screws (at opposite side as well) <...
  • Page 103 PAPER FEED UNIT 5. Replacing the 1st Paper Feed Solenoids (upper (3) Remove the two set screws, then remove the 1st paper and lower) feed solenoid. a. Procedure (1) Remove the paper feed unit. Set screws Paper feed unit 1st paper feed solenoid (upper) 1st paper feed...
  • Page 104 PAPER FEED UNIT 6. Replacing the Rubber of the Upper Paper Feed (6) Pull out the three stop rings, the three shaft bearings, Roller and the Feed Roller the paper feed reference actuator and the two shafts of a. Procedure the paper feed roller unit, then remove each roller.
  • Page 105 PAPER FEED UNIT 7. Replacing the Rubber of the Upper Stage Paper 8. Replacing the Rubber for the Lower Paper Feed Feed Double Feed Prevention Roller (double Roller and the Feed Roller feed prevention rubber) a. Procedure a. Procedure (1) Remove the paper feed unit. (1) Remove the paper feed roller.
  • Page 106 PAPER FEED UNIT 9. Replacing the Lower Stage Paper Feed Double (6) Pull out the three stop rings, the three shaft bearings, Feed Prevention Roller (double feed prevention the paper feed reference actuator and the two shafts of rubber) the paper feed roller unit, then remove each roller. (7) Remove the rubber from each roller (feed rubber A and a.
  • Page 107 PAPER FEED UNIT-1 PAPER FEED UNIT 10.Replacing the intermediate conveyance clutch 11.Removing and Re-installing the 2nd Paper Feed Unit a. Procedure (1) Remove the paper feed unit. Caution: Be sure that the power cord has been unplugged (2) Disconnect each connector (CN234 and CN464). from the power outlet.
  • Page 108 PAPER FEED UNIT (6) Remove the three intermediate connectors (CN42, 71 and 85). 12.Removing and Re-installing the Upper Tray (7) Remove the set screw. a. Procedure (1) Withdraw the upper tray, then remove the three set screws. set screw Set screws Connector (CN42) Connector (CN71) Connector (CN85)
  • Page 109 PAPER FEED UNIT 14.Replacing the Paper Feed Regulating Gear A 15.Replacing the Registration Roller (Upper/Lower) a. Procedure a. Procedure (1) Remove the paper feed unit. (1) Remove the 2nd paper feed unit. (2) Remove the connector (CN464) from the intermediate (2) Remove the set screw, then remove the roller knob.
  • Page 110 PAPER FEED UNIT (6) Remove the paper registration bearing (rear) and paper registration bearing (lower). (7) Remove the two bearings (lower), then remove the registration roller (lower). Paper Registration registration roller (lower) bearing (lower) Paper registration bearing (rear) Bearing (lower) Bearing (lower) (8) Re-install the above parts in the opposite sequence to removal.

  • Page 111: Paper Feed Control

    PAPER FEED UNIT-1 PAPER FEED UNIT [4] Paper Feed Control 40VDC 88-5 DCPS PGND 88-3 M140 52-1 7-B11 SGND 5VDC 120-A1 PS11 52-2 11-B8 PS11 M140 CONT 120-A2 52-3 11-A11 5VDC M140 PLL 120-A3 SGND 120-A4 13-1 M140 CLOCK 120-A5 PS18 13-2 7-B5...
  • Page 112 PAPER FEED UNIT-1 PAPER FEED UNIT (6) PS19 (PS19 → CB) c. 2nd paper feed control The paper conveyed to the 2nd paper feed section stops During continuous paper feed from the LCT/ADU, the after the specified period from when PS14 goes ON (loop CB checks the state of PS18 (no feed) when the paper formation).

  • Page 113: Paper Up-Down Control

    PAPER FEED UNIT (10) M40 CONT (CB → M140) [5] Paper Up-down Control M40 ON/OFF control signal [L]: M40 ON [H]: M40 OFF M17 DRIVE 7-A1 (11) M140 PLL (CB→ M140) 24VDC 7-A2 M140 PLL speed stabilizing signal (12) M140 CLK (CB → M140) M18 DRIVE 7-A3 24VDC...

  • Page 114: Paper Size Detection Control

    PAPER FEED UNIT [6] Paper Size Detection Control b. Output signals (1) M17 DRIVE (CB → M17) M17 drive control signal [L]: M17 ON [H]: M17 OFF (2) M18 DRIVE (CB → M18) TMP 1 60-B1 M18 drive control signal TMP 2 60-B2 [L]: M18 ON...
  • Page 115 PAPER FEED UNIT 2. Signals c. Detection of size of paper in the by-pass feed tray. The size in the lengthwise direction of the paper in the by- a. Input signals pass feed tray is detected by the ON/OFF state of PS22, (1) PAPER SIZE RETURN 0 to 3 (Paper size detection board →...

  • Page 116: No Paper Detection Control

    PAPER FEED UNIT [7] No Paper Detection Control SGND 7-B11 44-1 PS12 7-B1 PS12 44-2 5VDC 7-A11 44-3 45-1 PS13 7-B2 PS13 45-2 45-3 47-1 PS15 7-B7 PS15 47-2 47-3 No paper detection takes place by PS12 (upper tray no paper detection), PS13 (lower tray no paper detection) and PS15 (by- pass no paper detection) which are controlled by the CB (control board).

  • Page 117: Lct-1000 Tray Paper Feed/Conveyance Section

    LCT-1500 TRAY PAPER FEED/CONVEYANCE SECTION-1 LCT-1000 TRAY PAPER FEED/CONVEYANCE SECTION LCT-1000 TRAY PAPER FEED/CONVEYANCE SECTION [1] Composition Conveyance roller (upper) LCT conveyance PS (PS144) LCT Conveyance CL (CL3) Feed roller Paper feed swivel plate LCT paper feed SD (SD141) LCT 1st paper feed CL (CL1) No paper detecting actuator Paper feed roller Upper limit detection actuator...

  • Page 118: Disassembly And Re-Assembly

    LCT-1000 TRAY PAPER FEED/CONVEYANCE SECTION [3] Disassembly and Re-assembly 1. Removing and Re-installing the 1000 Tray Shaft bearing Paper Feed/Conveyance Section Caution: Be sure that the power cord has been unplugged from the power outlet. a. Procedure (1) Withdraw the LCT1000 tray tray in the forward direc- tion.
  • Page 119 LCT-1000 TRAY PAPER FEED/CONVEYANCE SECTION 3. Replacing the Rubber of the Double Feed (4) Remove the three Stop rings, then pull out the shaft, Prevention Roller and remove the double feed prevention roller. a. Procedure (5) Remove the double feed prevention rubber from the (1) Remove the LCT1000 paper feed/conveyance sec- double feed prevention roller.
  • Page 120 LCT-1000 TRAY PAPER FEED/CONVEYANCE SECTION 4. Replacing the Paper Feed Clutch 5. Replacing the Solenoid a. Procedure a. Procedure (1) Remove the LCT1000 paper feed/conveyance sec- (1) Remove the LCT1000 paper/conveyance section. tion. (2) Disconnect the solenoid connector (CN721). (2) Disconnect the connectors (CN720 and CN730) of the (3) Remove the set screw, then remove the solenoid paper feed clutch.

  • Page 121: 1000 Tray Paper Feed/No Paper Detection Control

    LCT-1000 TRAY PAPER FEED/CONVEYANCE SECTION [4] 1000 Tray Paper Feed/No Paper b. No paper detection control When there is no more copy paper in the LCT1000 tray, Detection Control PS141 goes ON, and a message is displayed on the indicating board via OB1 (operation board 1). 2.

  • Page 122: Lct-1500 Tray Paper Feed/Conveyance Section

    LCT-1500 TRAY PAPER FEED/CONVEYANCE SECTION-1 LCT-1500 TRAY PAPER FEED/CONVEYANCE SECTION LCT-1500 TRAY PAPER FEED/CONVEYANCE SECTION [1] Composition Feed roller LCT paper feed SD (SD140) Horizontal conveyance rollers Upper limit detection actuator Paper feed roller No paperdetection actuator LCT 1st paper feed CL (CL2) [2] Mechanisms *1: Roller swiveling To prevent the 1st paper feed roller from touching the paper...

  • Page 123: Disassembly And Re-Assembly

    LCT-1500 TRAY PAPER FEED/CONVEYANCE SECTION [3] Disassembly and Re-assembly (3) Remove the two stop rings, then shift the left and right shaft bearings to the outside, and remove the 1st paper 1. Removing and Re-installing the 1500 Tray feed roller unit. Paper Feed/Conveyance Section Caution: Be sure that the power cord has been unplugged from the power outlet.
  • Page 124 LCT-1500 TRAY PAPER FEED/CONVEYANCE SECTION 3. Replacing the rubber of the double feed 4. Replacing the Conveyance Solenoid prevention roller a. Procedure a. Procedure (1) Remove the LCT1500 paper feed/conveyance section (1) Remove the LCT 1500 paper feed/conveyance sec- (2) Remove the three set screws, then remove the belt tion.
  • Page 125 LCT-1500 TRAY PAPER FEED/CONVEYANCE SECTION 5. Replacing the LCT Clutch/2 a. Procedure (1) Remove the LCT1500 paper feed/paper conveyance section. (2) Remove the two set screws and two E rings, then remove the drive board. Set screw E rings Drive board Set screw (3) Disconnect the connector of the clutch.

  • Page 126: 1500 Tray Paper Feed/No Paper Detection Control

    LCT-1500 TRAY PAPER FEED/CONVEYANCE SECTION-1 LCT-1500 TRAY PAPER FEED/CONVEYANCE SECTION [4] 1500 Tray Paper Feed/No Paper b. No paper detection control When there is no more copy paper in the LCT1500, PS140 Detection Control goes ON, and a message appears on the operation panel. 2.

  • Page 127: Lct Paper Tray Section

    LCT PAPER TRAY SECTION LCT PAPER TRAY SECTION [1] Composition Rear stopper Side guides Wire A Tray Wire B <1500 tray> Auxiliary wire Tray Tray motor (M141, M142) Front cover Tray Rear stopper Remaining paper indicator window Wire B Coupling gear Drive pulley Wire A Auxiliary drive spring...

  • Page 128: Disassembly And Re-Assembly

    LCT PAPER TRAY SECTION [3] Disassembly and Re-assembly 2. Removing and Re-installing the 1500 tray Caution: Be sure that the power cord has been unplugged 1. Removing and Re-installing the 1000 Tray from the power outlet. Caution: Be sure that the power cord has been unplugged a.
  • Page 129 LCT PAPER TRAY SECTION 3. Replacing the Wires Caution: Caution: The method of installing the tray up-down drive After replacing or re-installing the wires, move the tray wires is the same for both the front and rear. For this up and down by hand, and confirm that it rises and falls reason, the description of the method of replacing smoothly.
  • Page 130 LCT PAPER TRAY SECTION Caution: The 1500 tray has two kinds of auxiliary drive <Wire length> 343 ± 0.4 mm (1500 tray) springs which are shown below. Install the 236 ± 0.4 mm (1000 tray) spring which matches the size of paper to be used in the tray.

  • Page 131: Tray Up-Down Control

    LCT PAPER TRAY SECTION [4] Tray Up-down Control 2. Signals a. Input signals (1) PS142 (PS142 → CB) 1500 tray upper limit detection signal. SGND 83-B3 724-1 This signal becomes [L] when the upper limit is de- PS143 PS143 83-B6 724-2 tected.

  • Page 132: Adu Paper Exit/Conveyance Section

    ADU PAPER EXIT/CONVEYANCE SECTION ADU PAPER EXIT/CONVEYANCE SECTION [1] Composition Paper exit rollers Selector guide ADU gate solenoid (SD152) ADU cooling fan (M152) Timing belt Conveyance ADU conveyance open/close door rollers [2] Mechanisms Mechanism Method Selector guide Paper path selection Selector guide Paper conveyance Conveyance roller...

  • Page 133: Disassembly And Re-Assembly

    ADU PAPER EXIT/CONVEYANCE SECTION [3] Disassembly and Re-assembly 2. Replacing the Paper Exit Conveyance Pulley and Paper Conveyance Roller 1. Removing the ADU Paper Exit/Conveyance a. Procedure Section (1) Remove the ADU paper exit and conveyance section. Caution: Be sure that the power cord has been unplugged (2) Remove the two E rings, then remove the two pulley from the power outlet.

  • Page 134: Selector Guide

    ADU PAPER EXIT/CONVEYANCE SECTION (2) PS158 (PS158 → CB) [4] Selector Guide Signal which detects the open/closed state of the ADU conveyance door [H]: ADU conveyance door open [L]: ADU conveyance door closed 24VDC 78-3 DCPS b. Output signals (1) SD152 DRIVE (CB → SD152) SD152 SD152 ON/OFF control signal SD152 DRIVE...

  • Page 135: Adu Cooling Fan Control

    ADU PAPER EXIT/CONVEYANCE SECTION [5] ADU Cooling Fan Control b. Output signals (1) M152 DRIVE (CB → M152) M152 ON/OFF drive signal [L]: M152 ON [H]: M152 OFF (2) FM152 DRIVE (CB → FM152) FM152 ON/OFF drive signal [L]: FM152 ON M152 DRIVE 65-B1 M152...

  • Page 136: Adu Paper Feed/Conveyance Section

    ADU PAPER FEED/CONVEYANCE SECTION ADU PAPER FEED/CONVEYANCE SECTION [1] Composition Reversal roller (at bottom) Conveyance guide plate (lower) Paper exit rollers ADU timing clutch (CL153) Paper exit rollers Paper exit rollers Conveyance guide plate (upper) ADU paper feed motor (M151) ADU paper feed clutch (CL151) Paper exit rollers ADU reversal clutch (CL152)
  • Page 137 ADU PAPER FEED/CONVEYANCE SECTION *2: Paper path selection *3: Decurler mechanism The selector gate switches the path of the paper exit/ Curled paper is decurled as a result of being passed conveyance between the paper advance path from the between the decurling belt and conveyance idler roller/2. paper exit/conveyance section to the paper feed section, and the paper exit path from the paper feed section to the conveyance section.

  • Page 138: Disassembly And Assembly

    ADU PAPER FEED/CONVEYANCE SECTION • Selector gate section [3] Disassembly and Assembly 1. Removing and Re-installing the Paper Feed/ Conveyance Section Caution: Be sure that the power cord has been unplugged from the power outlet. a. Procedure (1) Withdraw the ADU unit, then remove the four set screws.
  • Page 139 ADU PAPER FEED/CONVEYANCE SECTION 2. Replacing Conveyance Pulley/C, Conveyance (6) Remove the six set screws, then remove conveyance Roller/E guide plate (D). a. Procedure (1) Remove the ADU unit. Conveyance guide plate (D) Set screw (2) Remove the four set screws, then remove the ADU cover (front).
  • Page 140 ADU PAPER FEED/CONVEYANCE SECTION 3. Replacing the ADU Drive Clutch (conveyance (8) Remove the four E rings and the four bearings, then section) remove the ADU conveyance roller/E. a. Procedure (1) Remove the ADU unit. ADU conveyance roller/E (2) Remove the ADU cover (front). Bearing ADU conveyance roller/E (3) Remove the ADU cover (upper).
  • Page 141 ADU PAPER FEED/CONVEYANCE SECTION 4. Replacing the ADU Drive Clutch (reversal (6) Remove the three set screws, then remove the motor section) mounting board. a. Procedure (7) Remove the two E rings and the two bearings. (1) Remove the ADU unit. (2) Remove the three set screws, then remove the drive Motor mounting cover plate.

  • Page 142: Paper Feed/Reversal Control

    ADU PAPER FEED/CONVEYANCE SECTION [4] Paper Feed/Reversal Control M151 goes OFF after the end of a series of control operations in the ADU. b. Reversal control 5VDC 57-B4 SGND 57-B6 When CL151 goes OFF, CL152 goes ON after the speci- M151 DRIVE 83-A8 fied time, and the rotational force of M151 is transmitted to...

  • Page 143: Conveyance Control

    ADU PAPER FEED/CONVEYANCE SECTION ADU PAPER FEED/CONVEYANCE SECTION-1 [5] Conveyance Control b. Output signals (1) M151 DRIVE (CB → M151) M151 ON/OFF control signal [H]: M151 OFF [L]: M151 ON CL153 DRIVE 83-A6 CL153 78-3 24VDC (2) M151 CLOCK (CB → M151) PLL control clock signal for M151 DCPS (3) CL151 DRIVE (CB →...

  • Page 144: Conveyance Section

    CONVEYANCE SECTION-1 CONVEYANCE SECTION CONVEYANCE SECTION [1] Composition Conveyance unit Conveyance belt Conveyance guide plate Conveyance lever [2] Mechanisms Fixing unit Drum unit Mechanism Method Paper conveyance One conveyance belt Belt lifting mechanism Cam drive *1: Paper conveyance The paper fed from the 2nd paper feed section is conveyed to the fixing unit by the conveyance belt.

  • Page 145: Disassembly And Re-Assembly

    CONVEYANCE SECTION CONVEYANCE SECTION-1 [3] Disassembly and Re-assembly *2: Conveyance belt lifting mechanism This mechanism raises the conveyance unit when thick 1. Removing and Re-installing the Conveyance paper is used, in order to improve the paper conveyance Unit performance. a. Procedure When the conveyance solenoid (SD5) goes ON, drive force (1) Open the front door, then remove the drum unit, fixing is transmitted to the conveyance lifting cam, and the...
  • Page 146 CONVEYANCE SECTION 2. Replacing the conveyance belt 3. Replacing the Conveyance Suction Motor (FM14) Caution: When removing the conveyance belt, take care not to damage it on the edge of the conveyance unit. Caution: Be sure that the power cord has been unplugged a.

  • Page 147: Fm14 (Conveyance Suction) Control

    CONVEYANCE SECTION CONVEYANCE SECTION-1 [4] FM14 (conveyance suction) Control [5] SD5 (conveyance) Control FM14 DRIVE 65-A10 FM14 78-7 PGND SD5 DRIVE 6-B10 FM14 LD 65-A11 24VDC 6-B11 DCPS FM14 (conveyance suction) is driven by the CB (control board). SD5 (conveyance) is driven by the CB (control board). 1.

  • Page 148: Fixing Unit

    FIXING UNIT FIXING UNIT [1] Composition Oil pad Oil apply roller Oil pad Fixing cleaning roller Fixing cleaning roller Upper fixing claw Upper fixing roller Paper exit roller (upper) Paper exit roller/ Fixing heater upper unit lamp (upper) Paper exit roller (lower) Lower fixing claw Pressure release lever...
  • Page 149 FIXING UNIT *3: Jam sensor When a jam occurs in the fixing paper exit section, paper exit plate/B is pushed down and the photosensor (PS25) senses the jam by means of the operation of the jam sensor plate and actuator. Normal status Paper Actuator...
  • Page 150 FIXING UNIT This page is intentionally left blank. 2 - S - 1 - 2...

  • Page 151: Disassembly And Re-Assembly

    FIXING UNIT [3] Disassembly and Re-assembly 2. Replacing the Fixing Heater Lamp (upper) Caution: Do not touch the fixing heater lamp (upper) with 1. Removing and Re-installing the Fixing Unit the bare hands. Caution: Caution: Be sure that the power cord has been unplugged Install the fixing heater lamp with the makers mark from the power outlet.
  • Page 152 FIXING UNIT (4) Remove the set screw, then remove the lamp terminal. (3) Remove the set screw, then remove the fixing cover. (5) Pull out the fixing heater lamp (upper) from the upper fixing roller. Set screw Fixing heater lamp (upper) Fixing cover Lamp terminal...
  • Page 153 FIXING UNIT FIXING UNIT-1 4. Replacing the Oil Pad 5. Replacing the Fixing Cleaning Roller and Oil Apply Impregnated Roller a. Procedure (1) Remove the fixing unit. Caution: (2) Remove the set screw, then remove the fixing cover. Push the fixing unit cleaning roller and the CL shaft (3) Remove the E ring, then remove the upper paper exit firmly against each other.
  • Page 154 FIXING UNIT-1 FIXING UNIT 6. Removing and Re-installing the Upper Fixing (5) Remove the two heat insulation sleeves from the upper Roller fixing roller. Caution: When replacing the heat insulation sleeves, coat the inside and outside of the sleeves with “GREASE”, then fit the sleeves onto the roller shaft.
  • Page 155 FIXING UNIT Note: When re-installing the entrance guide plate (lower), (6) Raise the lower fixing roller, then remove it from the push it down to the bottom so that it touches the fixing paper exit side. base plate, then fix it in place. (7) Remove the two C rings from the lower fixing roller , then remove the two bearings.
  • Page 156 FIXING UNIT-1 FIXING UNIT 8. Removing and Re-installing the Lower Fixing 9. Removing and Re-installing the Upper Fixing Claws Claws a. Procedure a. Procedure (1) Remove the paper exit plate/bottom. (1) Open the upper paper exit roller unit. (2) Remove the two jam sensor springs, one of which is (2) Remove the six springs attached to the upper fixing located at each end of the paper exit plate/bottom.
  • Page 157 FIXING UNIT FIXING UNIT-1 b. Installation procedure (1) Secure fixing temperature sensor 2 with the set screw, so the sensor element is in contact with the upper fixing roller. (2) Set the fixing temperature sensor positioning jig be- tween fixing temperature sensor 1 and the upper fixing roller, then fix fixing temperature sensor 1 with two set Wiring band Wiring band...
  • Page 158 FIXING UNIT 11.Removing and Re-installing Fixing b. Installation procedure Temperature Sensor 3 (1) Set the fixing temperature sensor positioning jig be- Caution: tween fixing temperature sensor 3 and the upper fixing After re-installing fixing temperature sensor 3 , roller, then fix fixing temperature sensor 3 with two set check to ensure that the sensor wires are not screws so that the clearance between the sensor and touching the upper fixing roller.
  • Page 159 FIXING UNIT FIXING UNIT-1 12.Removing and Re-installing the Thermostat When adjusting the distance, fix the temperature sensor 3 using the A portion of (upper) the jig. Caution: After re-installing the thermostat (upper), check to ensure that the wiring is not touching the upper fixing roller.
  • Page 160 FIXING UNIT-1 FIXING UNIT (2) Coat the set screw of the installed thermostat (upper) with screw lock agent. Set screw (3) Connect the two fastons. (4) Install the other parts in the opposite sequence to Thermostat positioning Thermostat (upper) jig (for upper roller) removal.
  • Page 161 FIXING UNIT FIXING UNIT-1 13.Removing and Re-installing the Thermostat b. Installation procedure (lower) (1) Set the thermostat positioning jig (for the lower fixing Caution: roller) between the thermostat (lower) and the lower After installing the thermostat (lower), ensure that fixing roller, then fix the thermostat (lower) with the set the wiring is not touching the lower fixing roller.

  • Page 162: Fixing Temperature Control

    FIXING UNIT [4] Fixing Temperature Control (b) When adjusting the distance, should not be al- lowed to run up over B . RL DRIVE 60-B9 24VDC 60-B10 L2 CONT 60-A6 CN 399-1 L3 CONT 60-A7 L4 CONT 60-A8 L2 DRIVE L3 DRIVE 382-2 L4 DRIVE...
  • Page 163 FIXING UNIT FIXING UNIT-1 b. Output signals (1) L2 CONT (CB → DCPS) Warming up Signal which controls the ON/OFF state of L2 In idling ON/OFF ON/OFF ON/OFF [L]: L2 ON In copying [H]: L2 OFF (2) L3 CONT (CB → DCPS) Signal which controls the ON/OFF state of L3 b.

  • Page 164: Other Kinds Of Control

    OTHER KINDS OF CONTROL OTHER KINDS OF CONTROL [1] Parts Through Which Current Flows [2] Parts That Operate When the Main When the Main Switch is Turned OFF Switch is Turned ON HTR1 HTR2 HTR3 DCPS 24VDC 60-B1 RL DRIVE 60-B9 AC (H) 397-1...

  • Page 165: Cooling Fan Control

    OTHER KINDS OF CONTROL [3] Cooling Fan Control Also, as a result of RL1 going ON, the DCPS applies the AC supply voltage to CVR. DC output voltages and corresponding symbols Output symbol FM2 DRIVE 83-A1 99-4 PGND 40VDC (1) FM2 LD 83-B1 40VDC (2)
  • Page 166 OTHER KINDS OF CONTROL (2) FM16 LD (FM16 → CB) This signal becomes [L] when FM16 reaches the set speed. (3) FM22 LD (FM22 → CB) This signal becomes [L] when FM22 reaches the set speed. (4) FM2 LD (FM2 → CB) This signal becomes [L] when FM2 reaches the set speed.

  • Page 167: Operation Panel Control

    OTHER KINDS OF CONTROL [4] Operation Panel Control b. LCD control (1) LCD display operation The LCD is driven by 4-bit parallel data from OB1. (2) Backlight ON operation OB1 TXD 3-A1 10-1 The LCD has a backlight (cold cathode tube) to facili- 3-A2 10-2 OB1 RXD...

  • Page 168: Counter Control

    OTHER KINDS OF CONTROL-1 OTHER KINDS OF CONTROL [5] Counter Control b. Output signals (1) OB1 TXD (CB1 → OB1) 32-bit serial data which informs OB1 of the operation status of the machine that is known to CB1. (2) OB1 RTS (CB1 → OB1) 24VDC 22-B7 C (T)

  • Page 169: Option Control

    OTHER KINDS OF CONTROL 2. Signals [6] Option Control a. Input signals (1) C(K) JOINT (C(K) → CB) This signal informs the CB that the count on C(K) has 40VDC increased. 24VDC (2) PS25 (PS25 → CB) PGND PS25 state signal. When this signal is [L], PS25 goes ON, indicating that 24VDC Finisher...

  • Page 170: Diagrams

    CONTENTS-1 CONTENTS 3. DIAGRAMS ELECTRICAL PARTS LAYOUT DRAWING ....3-1 CONNECTOR LAYOUT DRAWING ......3-4 OVERALL WIRING DIAGRAM ........3-7 JAM LIST ..............3-11 [1] Paper Jam ............. 3-11 [2] Trouble codes ..........3-20 LIST OF UNPLUGGED CONNECTOR(REFERENCE ONLY) ..3-28 [1] Paper Jamming ..........

  • Page 171: Electrical Parts Layout Drawing

    DIAGRAMS-1 DIAGRAMS ELECTRICAL PARTS LAYOUT DRAWING 1. Switch Sensor Main switch Glass PS PS24 Fuser detect PS PS144 LCT conveyance PS (1000) Door interlock MS1 PS11 Paper conveyance door PS PS25 Paper exit PS PS146 LCT conveyance PS (1500) PS30 By-pass PS PS151 ADU no paper PS...
  • Page 172 DIAGRAMS DIAGRAMS-1 2.Load FM30 Developing suction fan Optics drive motor Conveyance MC1 LCT paper feed CL (1000) LCT paper feed CL (1500) FM152 ADU cooling fan 1 Upper tray motor Conveyance MC2 Conveyance CL FM153 ADU cooling fan 2 Lower tray motor MC10 Cleaner MC Exposure lamp...
  • Page 173 DIAGRAMS-1 DIAGRAMS 3. Others AD conversion board Image processing board Main relay INDICATING BOARD Control board Constant voltage regulator – – INDICATING STARTER Circuit breaker LDB1 Laser diode board 1 RDH IFB E-RDH I/F board Drum board Fixing temperature sensor 1 LDB2 Laser diode board 2 DCPS1...

  • Page 174: Connector Layout Drawing

    DIAGRAMS-1 DIAGRAMS CONNECTOR LAYOUT DRAWING 125 (BK: 8 PIN) (W: 7 PIN) (W: 6 PIN) 42 (R: 10 PIN) 85 (W: 11 PIN) (W: 6 PIN) (BK: 4 PIN) 438 (R: 3 PIN) (W: 5 PIN) (W: 8 PIN) 167 (W: 2 PIN) 71 (W: 2 PIN) (W: 3 PIN) (W: 3 PIN)
  • Page 175 DIAGRAMS-1 DIAGRAMS Control Board (W: 11 pin) (W: 12 pin) (BK: 2 PIN) (W: 12 pin) (W: 8 pin) (W: 11 pin) (BK: 12 pin) 713 (W: 3 PIN) (W: 9 pin) (W: 9 pin) (W: 10 pin) (W: 9 pin) (W: 12 pin) (W: 8 pin) (W: 12 pin)
  • Page 176 DIAGRAMS-1 DIAGRAMS Operation Board/1 Optics Motor Drive Board E-RDH I/F Board Index Sensor Board (NC) (W: 24 pin) (W: 100 pin) (W: 5 pin) (W: 3 pin) (W: 10 pin) (W: 10 pin) (W: 11 pin) (W: 14 pin) (W: 10 pin) (W: 10 pin) (W: 100 pin) (W: 8 pin)

  • Page 177: Overall Wiring Diagram

    OVERALL WIRING DIAGRAM (1/4) MAIN RELAY (Europe ONLY) TS-1 TS-2 752-1 392-7 AC POWER 392-8 752-2 CLEANER DEVELOPING DEVELOPING CONVEYANCE POLYGON TONER E-RDH MAIN BODY OPTICS CLUTCH SCREW SUCTION SUCTION COOLING SUPPLY COOLING COOLING COOLING MAIN SWITCH MOTOR MOTOR FAN 2 383-1 383-3 35 36...
  • Page 178 OVERALL WIRING DIAGRAM (2/4) LCT 1ST LCT PAPER LCT 1ST DEVELOPING PAPER PAPER REVERSAL PAPER PAPER PAPER PAPER PAPER FEED NO PAPER UPPER LIMIT CONVEYANCE CNVEYANCE PAPER FEED PRE W POLYGON DRUM REVERSAL TIMING DETECTION EXIT EXIT GATE GETE INTERLOCK COOLING SENSOR MAIN...
  • Page 179 OVERALL WIRING DIAGRAM (3/4) LCT 1ST LCT 1ST LCT PAPER DCPS PAPER FEED PAPER FEED NO PAPER UPPER LIMIT CONVEYANCE PRE W LCT PAPER LCT TRAY LCT TRAY TRAY TRAY LASER INDXSB LDB1 LDB2 CLUTCH (15) SOLENID (15) SENSOR (15) SENSOR (15) SENSOR (15) SENSOR (15)
  • Page 180 OVERALL WIRING DIAGRAM (4/4) E-RDH RDH IFB IPB (2/2) CB (4/4) Large capacity tray RADF Finisher PAPER SIZE DETECTION BOARD OPTIONS DCPS DCPS C (K) COUNTER 3 - 10...

  • Page 181: Jam List

    DIAGRAMS JAM LIST Following jam detection is carried out in this machine. [1] Paper Jam Operation when jam Classifica- Causes Method of clearing jam occurs tion code B y - p a s s J10-2 When PS14 (register) is not turned ON If a copy is being Remove the original feed tray...
  • Page 182 DIAGRAMS Operation when jam Classifica- Causes Method of clearing jam occurs tion code Large J15-1 When PS802 (pre try) is ON during idling. If a copy is being Open the LCT upper capacity tray stationary made when a jam cover and remove the paper feed J15-2 When...
  • Page 183 DIAGRAMS Operation when jam Classifica- Causes Method of clearing jam occurs tion code Conveyance Paper wrapping is detected by The main body is Open the front door and TCSB. stopped immediately. remove the jammed PS14 (regist) is not turned OFF within paper and close it.
  • Page 184 DIAGRAMS Operation when jam Classifica- Causes Method of clearing jam occurs tion code When ADF was opened during ADF ADF is stopped Open ADF and remove paper feed operating operation. immediately. the jammed paper and When PS302 (original passing) is ON dur- When there is paper in close it.
  • Page 185 DIAGRAMS Operation when jam Classifica- Causes Method of clearing jam occurs tion code Finisher J72-01 When PS4 (FIN entrance passing) Finisher/main body is Remove the jammed stationary detected paper. stopped immediately. paper off the finisher/ J72-02 PS5(stacker conveyance passing) main body. detected paper.
  • Page 186 DIAGRAMS Classifica- Operation when jam Causes Method of clearing Jam tion code occurs Finisher J72-22 When PS20(stacker paper 0), PS5 Finisher/main body is Remove the jammed Stationary (stacker conveyance passing) and stopped immediately. paper off the PS6 (Paper exit 1) are ON. finisher/main body.
  • Page 187 DIAGRAMS Classifica- Operation when jam Causes Method of clearing Jam tion code occurs J72-49 Finisher/main body is Remove the jammed Finisher When PS17(stapler R HP) is not turned operating ON within a certain period after stopped immediately. paper off the M10 (stapler F) is ON.
  • Page 188 DIAGRAMS Operation when jam Classifica- Causes Method of clearing jam occurs tion code Finisher J72-71 When PS6 (paper exit 1) does not go OFF Finisher/main body is Remove the jammed operating after it goes ON. stopped immediately. paper off the finisher/ J72-72 PS4 (FIN entrance passage) does main body.
  • Page 189 DIAGRAMS Operation when jam Classifica- Causes Method of clearing jam occurs tion code When PS152 (ADU paper feed) is not The main body is Open ADU/main body paper feed operating turned ON within 2000 msec from stopped immediately. front door/lengthwise ON of PS25 (paper exit).

  • Page 190: Trouble Codes

    DIAGRAMS DIAGRAMS-1 [2] Trouble Codes Classifica- Warning Operation in case of Releasing Causes Estimated abnormal parts tion code warning occurrence method Paper feed PS16 (upper limit (upper)) is not The main body is OFF of main CB (Control board) F18-1 switch →...
  • Page 191 DIAGRAMS Operation in case of Releasing Classifica- Warning Causes Estimated abnormal parts warning occurrence method tion code Snapping of F36-1 A prescribed temperature is not Main relay is turned Set "0" to the CB (Control board) fixing sensor reached within 120 seconds OFF, and all keys are address 3-1, TH1 (Fixing temperature...
  • Page 192 DIAGRAMS Classifica- Warning Operation in case of Releasing Causes Estimated abnormal parts tion code warning occurrence method Turn SW1 (Main) Image E46-0 An error was detected during The main unit stops sud- DCPS (DC power supply) unit off and then on processing sub-scan beam correction denly while copying is in...
  • Page 193 DIAGRAMS Classifica- Warning Operation in case of Releasing Causes Estimated abnormal parts tion code warning occurrence method Turn the main Image E47-1 AGC conclusion is not Only during idling, it IPB (Image processing switch from processing returned from the occurs. M/C stops board) OFF to ON.
  • Page 194 DIAGRAMS-1 DIAGRAMS Classifica- Warning Operation in case of warn- Releasing Causes Estimated abnormal parts tion code ing occurrence method Motor speed F51-1 Speed abnormality in a M35 The main body is Turn the main M35 (Developing screw) abnormality (developing screw). stopped immediately.
  • Page 195 DIAGRAMS Classifica- Warning Operation in case of warn- Releasing Causes Estimated abnormal parts tion code ing occurrence method Communication abnormality Finisher The main body is Set the main FNS DB (FNS drive board) abnormality stopped immediately switch to ON/ Connector <When copying>...
  • Page 196 DIAGRAMS This page is intentionally left blank. 3 - 26...
  • Page 197 DIAGRAMS This page is intentionally left blank. 3 - 27...

  • Page 198: List Of Unplugged Connector (Reference Only)

    DIAGRAMS LIST OF UNPLUGGED CONNECTOR SYMPTOMS (REF. ONLY) When each abnormality occurs, there is a possibility that the following connectors are unplugged. When an objective connector is connected normally, conduct trouble shooting in accordance with a jam code list. [1] Paper Jamming Code Jam No.

  • Page 199: Trouble Codes

    DIAGRAMS [2] Trouble Codes Code Number of unplugged connector F18-1 CN1, CN2 (control board), CN23 (in paper feed unit) F18-2 CN1, CN7 (control board), CN24 (in paper feed unit) F18-3 CN120 (control board), CN732 (at bottom of rear face), CN122 (at right side of control board at rear face) F18-4 CN120 (control board), CN731 (at bottom of rear face), CN122 (at right side of control board at rear face) F18-5...

  • Page 200: Others

    DIAGRAMS DIAGRAMS-1 [3] Others Number of unplugged connector Classification Phenomenon Power supply Power not supplied CN4 (control board), CN8 (DC power supply at paper exit face), CN60 abnormality (control board), CN390 (bottom right of rear face), CN397 (DC power supply at bottom of rear face), CN398 (DC power supply at bottom of paper exit side) Warm-up not completed CN223, CN224, CN226 (optics drive board), CN400 (DC power supply at...

  • Page 201: Timing Chart

    " × 11", LIFE SIZE, TWO COPIES, UPPER PAPER FEED) TIMING CHART (A4/8 Time (sec) Symbol Item Main motor 130mS Drum motor 250mS 350mS Developing drive motor 500mS Optics drive motor Developing screw motor Polygon motor M140 Paper feed motor 405mS 1st paper feed SD Paper feed MC...

  • Page 202: Adu Timing Chart

    " × 11", TWO ORIGINALS, TWO SHEETS SET) ADU TIMING CHART (A4/8 (sec) Time (sec) Symbol Item SD152 ADU gate SD M152 ADU fan motor M151 ADU paper feed motor 200mS 200mS CL151 ADU paper feed CL CL152 ADU reversal CL CL153 ADU timing CL When PS14 (registration) is turned ON by...
  • Page 203 CONTENTS-1 CONTENTS 4. ADJUSTMENT 47 MODE ..............4-55 [1] 47 /Multi Mode Setting Method ...... 4-55 HOW TO USE THE ADJUSTMENT SECTION ..4-1 [2] Initial Setting ..........4-57 [1]Structure ............4-1 [3] Adjustment Mode List ........4-57 ADJUSTMENTS WHEN REPLACING PARTS ..4-1 [4] L Detection Adjustment ........

  • Page 204: Adjustment

    ADJUSTMENT HOW TO USE THE ADJUSTMENTS WHEN ADJUSTMENT SECTION REPLACING PARTS [1] Structure Adjustments (including checks) and settings are not only re- quired when a defective copy image occurs, but also after re- This section details adjusting items and procedures. Use this placing or reinstalling certain parts.
  • Page 205 ADJUSTMENT-1 ADJUSTMENT Mode Code Page 4-30 4-57 4-33 4-34 4-35 4-31 4-32 4-34 4-12 4-63 4-13 4-32 4-36 4-38 4-40 Part Name Condition Drum Developer Charging control plate High voltage unit 1 Writing unit Reinstall Memory IC Change of paper size for tray 2.3and4 —...

  • Page 206: Setting And Adjustment With P Function

    ADJUSTMENT-1 ADJUSTMENT SETTING AND ADJUSTMENT WITH P FUNCTION [3] Checking the Total Count P function enables to display the following parameters with the P button. Step Operation (Indication) Entry Terminal Press 1 from the copy quantity Copy quantity 0. Checking the Printer Count setting button.

  • Page 207: Checking The Density Shift (Text)

    ADJUSTMENT-1 ADJUSTMENT [8] Checking the Density Shift (text) Referrence: Each copy count data number describe papersize as follows. Step Operation (Indication) Entry Terminal Press 6 from the copy quantity Copy quantity Japan Europe setting button. setting button — — — Press the START PRINT button.

  • Page 208: Mode

    ADJUSTMENT-1 ADJUSTMENT 25 MODE [1] Setting Method [2] Setting Software DIP SW 1. Setting method A special operating mode called "25 Mode" has been provided with this machine. This mode enables to rewriting the non- This setting specifies the software DIP switch. (*1) volatile storage and specify other various settings.
  • Page 209 ADJUSTMENT Software DIP SW Setting • The bit of the switch is written in the non-volatile RAM every time it is changed. • The numbers shown in the message area are defined as follows: Software Switch set mode 4 - 7 : 8-bit switch value is indicated in hexadecimal from 00 to FF.
  • Page 210 ADJUSTMENT-1 ADJUSTMENT <Software Switch List> : The boxes with thick lines indicate factory settings. DIPSW No. Function Operation when key counter is removed Ignore Instantaneous stop jam A3 (11" × 17") count method 1 count 2 count Finisher number of stapled sheets upper limit stop select Immediate stop Stop at an interval of copy set...
  • Page 211 ADJUSTMENT-1 ADJUSTMENT DIPSW No. Function Separation claw on timing * 11 * 11 * 11 * 11 ″ * 11 * 11 ″ DIPSW 6 ″ * 11 * 11 Separation claw off timing * 11 * 11 ″ * 11 * 11 * 11 * 11...
  • Page 212 ADJUSTMENT-1 ADJUSTMENT DIPSW No. Function Tray screen OK key display Magnification screen OK key display Density screen OK key display DIPSW 11 Copy mode OK key display Select time without OK Short Long New operation screen select (for direct selection menu screen) Tray icon display (for direct selection menu screen) Sets number of print start for 24-hour processing * 20...
  • Page 213 ADJUSTMENT-1 ADJUSTMENT * 1: Finisher number of stapled sheets upper limit select * 9: Polygon motor low-speed select (when idling) Mode Mode 50 sheets No preliminary rotation 45 sheets Preliminary rotation 14,000rpm 40 sheets Preliminary rotation 11,024rpm 35 sheets Preliminary rotation 8,000rpm Stop * 2: Finisher sensor failure sensing.
  • Page 214 ADJUSTMENT-1 ADJUSTMENT * 12: Preferential tray select upon APS cancel. * 18: Sets number of copies for copy disable upon PM arrival. Mode Mode 12-5 12-4 12-3 No priority 1000 copies Tray 1 2000 copies Tray 2 3000 copies Tray 3 4000 copies Tray 4 5000 copies...

  • Page 215: Setting Tray Size

    ADJUSTMENT [3] Setting Tray Size Step Operation Enter the 25 mode. This function stores the paper size in the memory of the main [25 MODE SCREEN] machine if it has been changed . Press Tray Size Setting. [TRAY SIZE SETTING SCREEN] [TRAY SIZE SETTING SCREEN] Press the tray button to be changed.

  • Page 216: Pm Count Reset

    ADJUSTMENT [4] PM Count Reset [5] Setting PM Cycle Care should be taken to reset PM count properly. This function sets the PM cycle. 1. Screen selection 1. Screen selection Select PM count in the 25 Mode Screen to display PM Select PM count in the 25 Mode Screen to display PM Count/Cycle Screen as an initial screen.
  • Page 217 ADJUSTMENT-1 ADJUSTMENT [6] Data Collection Step Operation Enter the 25 mode. This function enables to viewing the various data maintained [25 MODE SCREEN] in the machine. Press PM Count. [PM COUNT/CYCLE SCREEN] 1. Data view method Press PM Cycle Set. Select Data Collection in the 25 Mode Screen.
  • Page 218 ADJUSTMENT 3. Data display procedure (data collection 2 - 5) (1) On the second row of the message area, the data number (No.) then the count value are displayed. a. Operation (2) The data number can be changed by pressing key.

  • Page 219: Data Collection

    ADJUSTMENT b. Data details (1) Data collection -2 JAM occurrence count by each point Maximum count No. Maximum count No. — 999,999 999,999 — 999,999 J10-2 999,999 — 999,999 J10-4 999,999 — 999,999 — 999,999 — 999,999 — 999,999 — 999,999 J17-3 999,999...
  • Page 220 ADJUSTMENT (2) Data collection -3 Copy count by each mode Maximum Count No. Maximum Count No. Platen 1-1 mode 99,999,999 Copy quantity is set to 12 99,999,999 Platen 1-2 mode 99,999,999 or above. ADF2-1 mode 99,999,999 99,999,999 Sheet/Cover interleave start ADF2-2 mode 99,999,999 –...
  • Page 221 ADJUSTMENT (3) Data collection -4 SC occurrence count (F code) SC Code Maximum count No. SC Code Maximum count No. F18-1 F49-3 9,999 9,999 F18-2 9,999 F49-4 9,999 F18-3 9,999 F49-5 9,999 F18-4 9,999 F51-1 9,999 F28-1 9,999 F51-2 9,999 F28-2 9,999 F51-3...
  • Page 222 ADJUSTMENT (4) Data collection -5 SC occurrence count (E code) E Code Maximam count No. — 9,999 9,999 E46-0 9,999 — 9,999 E46-2 9,999 E46-6 9,999 E46-8 9,999 E46-9 9,999 9,999 9,999 9,999 E77-1 9,999 E77-2 9,999 E77-3 9,999 E77-4 9,999 E77-5 9,999...

  • Page 223: Copy Count By Parts To Be Replaced

    ADJUSTMENT [7] Copy Count by Parts to be Replaced 1. Copy count reset by parts to be replaced The following settings are used for arbitrary parts or data. <Count Reset Selection> 1. Copy count reset Select Copy count by parts to be replaced in the 25 Mode 2.
  • Page 224 ADJUSTMENT-1 ADJUSTMENT 2. Copy count limit setting by parts to be replaced [Copy Count Reset Screen by Parts to be Replaced] Set new limit value for the copy count by parts to be re- Each part counter clear YES / NO? No.
  • Page 225 ADJUSTMENT 3. Count limit setting 4. Part Number Setting Method [Part number setting screen] [Copy Count Limit Setting Screen by Parts to be Re- placed] Each part counter P/N setting Each part counter limit setting No.15 P/N xxxxxxxxx 000300/050000 No.1 1565/5000 (1) Using the numeric keys on the screen, enter new parts number (P/N).

  • Page 226: Setting Key Operator Password

    ADJUSTMENT-1 ADJUSTMENT 5. Part Name Setting Method [8] Setting Key Operator Password This function sets the password to enter the key operator mode. [Part Name Setting Screen] 1. Password setting screen selection Parts name setting EX-LAMP No.15 P/N xxxxxxxxx 000300/050000 Select Password Setting in the 25 Mode Screen to dis- play Password Setting Screen as an initial screen.

  • Page 227: Setting Ekc Master Key Code

    ADJUSTMENT [9] Setting EKC Master Key Code (3) The screen will return to Password Setting Screen if key is pressed without pressing PREVIOUS SCREEN This function sets EKC master key code. key. In this case, no password will be changed. 1.

  • Page 228: Setting Weekly Timer Master Key Code

    ADJUSTMENT-1 ADJUSTMENT [10] Setting Weekly Timer Master Key [11] Specifying Phone Number of Service Code Center This function sets the weekly timer master key code required This function specifies the phone and fax numbers of the serv- for entering the various weekly timer set mode. ice center which is indicated in the screen if the service call is issued.

  • Page 229: Setting And Displaying Serial Number

    ADJUSTMENT [12] Setting and Displaying Serial Select key to end setting the phone PREVIOUS SCREEN number and return to the 25 Mode Screen. Number Step Operation This function is used to display, set and change the serial Enter the 25 mode. number of the main machine or optional machines.

  • Page 230: Displaying Rom Version

    ADJUSTMENT [13] Displaying ROM Version Step Operation Enter the 25 mode. This function is used to display ROM version mounted to the [25 MODE SCREEN] machine. Press Indication of m/c serial number [Serial Number Display Screen] 1. ROM version view method Check the number shown in the message area.

  • Page 231: Mode Adjust Item List

    ADJUSTMENT [14] 25 Mode Adjust Item List Adjust Item (Remarks) Software DIP SW Setting Refer to "List of Software DIP SW". Paper Size Setting PM count/cycle PM count reset PM cycle reset Data collection Data collection -1 (by each size) 1~12 items (ADF paper passage count) Data collection -2 (JAM occurrence count by each point)

  • Page 232: Mode

    DIAGNOSTICS-1 DIAGNOSTICS 36 MODE [2] Charging Corona Current Adjustment A special operating mode called "36 Mode" has been provided with this machine. This is used to make various adjustments. Charging Corona Current Adjustment is not field adjustable. [1] Setting Method [3] Transfer Current Adjustment 1.

  • Page 233: Charging Grid Voltage Adjustment

    DIAGNOSTICS-1 DIAGNOSTICS *1: Standard volage = Drum designate value ± 5 V [7] Charging Grid Voltage Adjustment Input range = 0~255 Adjust the charging grid voltage. 1step = 1.6 V CAUTION: Confirm that the drum counter is zeroed before performing this adjustment. Value written on drum plastic flange.
  • Page 234 DIAGNOSTICS-1 DIAGNOSTICS [8] Drum Clock / Horizontal Adjustment (1) Vertical magnification adjustment (Printer) When varying the magnification, adjust the vertical magnifica- Step Operation tion using the maximum size of copy paper. Enter the 36 mode. [36 MODE MENU SCREEN] 1. If Timing Adjustment is selected using the 36 mode menu Press Timing adjustment.
  • Page 235 DIAGNOSTICS-1 DIAGNOSTICS (2) Vertical magnification adjustment (Scanner) (3) Horizontal magnification adjustment Step Operation Step Operation Enter the 36 mode. Enter the 36 mode. [36 MODE MENU SCREEN] [36 MODE MENU SCREEN] Press Timing adjustment. Press Timing adjustment. [TIMING ADJUSTMENT SCREEN] [TIMING ADJUSTMENT SCREEN] Press Drum clock/Horizontal adjustment.
  • Page 236 DIAGNOSTICS-1 DIAGNOSTICS [9] Restart Timing Adjustment (1) Copier system leading edge timing adjustment Adjust the restart timing (registration) using the procedure Step Operation shown at right. Enter the 36 mode. If the 36 mode menu screen is opened, then Timing Adjust- [36 MODE SCREEN] Press Timing adjustment.

  • Page 237: Paper Feed Loop Adjustment

    DIAGNOSTICS-1 DIAGNOSTICS (2) Printer system leading edge timing adjustment [10] Paper Feed Loop Adjustment Adjust the loop for each tray using the procedure shown below. Step Operation Enter the 36 mode. If the 36 mode menu screen is opened, then Timing Ad- [36 MODE SCREEN] justment selected, the timing adjustment menu screen will...
  • Page 238 DIAGNOSTICS [11] Leading Edge Original Erasure [12] Optics Brake Adjustment Adjustment Optics Brake Adjustment is not field adjustable. Adjust the leading edge margin using the procedure shown below. If the 36 mode menu screen is opened, then Timing Adjust- ment selected, the timing adjustment menu screen will ap- pear.

  • Page 239: Centering Adjustment

    DIAGNOSTICS-1 DIAGNOSTICS [13] Centering Adjustment If the 36 mode menu screen is opened, then Timing Adjust- ment selected, the timing adjustment menu screen will ap- pear. Relation between copy process and Centering Open this screen, then select Centering Adjustment. adjustment [Centering adjustment screen] Reference point Centering adjustment (Writing)
  • Page 240 DIAGNOSTICS-1 DIAGNOSTICS (1) Each tray Manual feed centering adjustment (2) ADU centering adjustment Step Step Operation Operation Enter the 36 mode. Enter the 36 mode. [36 MODE SCREEN] [36 MODE SCREEN] Press Timing adjustment. Press Timing adjustment. [TIMING ADJUSTMENT SCREEN] [TIMING ADJUSTMENT SCREEN] Press Centering Adjustment.

  • Page 241: Laser Adjustment

    DIAGNOSTICS-1 DIAGNOSTICS (3) Original image centering adjustment [14] Laser Adjustment Step Operation Perform adjustment of the two laser outputs. Place an original correctly on the original glass. If the 36 mode menu screen is opened, then timing adjust- Select the one-sided copy mode then press the ment selected, the timing adjustment menu screen will ap- START PRINT button.
  • Page 242 DIAGNOSTICS-1 DIAGNOSTICS (1) Laser adjustment (gradation adjustment) (2) Laser Adjustment (side pitch offset) Adjust the laser gradation. Adjust the interval in the sub scanning direction of the laser. Preparation: Complete Dmax level correction [47 – 13]. Preparation: Complete gradation (Gamma) level correction Step Operation [47-14].
  • Page 243 DIAGNOSTICS-1 DIAGNOSTICS (3) Laser adjustment (gradation adjustment/600dpi) Step Operation This adjustment is performed when the main unit is also used [Example of Improper Adjustment] as a printer. Preparations: Light areas: LD1 output - Complete the laser adjustment (gradation adjustment). Dark areas: LD2 output - Complete the Dmax level correction (600dpi) [47 –...
  • Page 244 DIAGNOSTICS This page is intentionally left blank. 4 - 39 - 2...
  • Page 245 DIAGNOSTICS-1 DIAGNOSTICS [15] RADF Original Stop Position Step Operation Enter the 36 mode. Adjustment [36 MODE MENU SCREEN] Press Timing adjustment. Adjust the RADF original stop position using the procedure [TIMING ADJUSTMENT SCREEN] shown below. Press RADF original stop position adjustment. If the 36 mode menu screen is opened, then Timing Adjust- Touch the...
  • Page 246 DIAGNOSTICS [16] Resetting Standard Data [17] Running Test Mode Reset the adjusted set values to the standard values (After Perform a running test during a continuous copy operation production adjustment) using the procedure shown below. using the method described below. If the 36 mode menu screen is opened, then timing adjust- Open the 36 mode menu, then select...
  • Page 247 DIAGNOSTICS [18] Test Pattern Output *1: Contents of the running mode Output a test pattern using the procedure described below. Running mode 1 If the 36 mode menu screen is opened, then Test Pattern Running mode 1 is an intermittent copy mode. In this Output Mode selected, the test pattern setting screen will be mode, after the set number of copy operations has been displayed.
  • Page 248 DIAGNOSTICS Overall halftone [Check item] When the density is set to 70 (halftone) If white stripes, black stripes, or uneven density can be seen, determine which of the scanner system and the printer system is abnormal. When the density is set to 0 (white) If the test pattern is fogged, determine which of the scanner system and the printer system (writing section, process section) is abnormal.
  • Page 249 DIAGNOSTICS Gray scale pattern [Check item] If the test pattern is fogged or the density is light, determine which of the processing system and γ correction correction is abnormal. If the copy image is abnormal despite this test pattern being normal, either the image processing system or the scanner system is abnormal.
  • Page 250 DIAGNOSTICS Gray scale pattern [Check item] If you find an abnormality in the test pattern, check to see if the two lasers are emitting light normally. Test pattern 4 - 45...
  • Page 251 DIAGNOSTICS Gray scale pattern [Check item] If you find an abnormality in the test pattern, check to see if the outputs of the lasers are uniform. Test pattern 4 - 46...
  • Page 252 DIAGNOSTICS Beam misalignment check [Check item] If you find an abnormality in the test pattern, check to see if position correction of the two laser beams takes place normally. Test pattern 4 - 47...
  • Page 253 DIAGNOSTICS Linearity evaluation pattern [Check item] Judge from this test pattern which of the scanner system and the printer system is abnormal. Items that can be checked include horizontal magnification, vertical magnification, tilt image, and leading edge timing of the printer system.
  • Page 254 DIAGNOSTICS Read GA built-in pattern [Check item] This test pattern is intended to judge whether or not the abnormal section is located before the image process- ing board. If the test pattern is an 8-bit output and is normal, the fault lies in the CCD board before the image processing board.
  • Page 255 DIAGNOSTICS Copy γ GA built-in pattern [Check item] This test pattern is intended to judge whether or not the electronic RDH board is abnormal. There are two test patterns which correspond to the 8-bit mode in which the electronic RDH is not used, and the mode in which it is used, respectively.
  • Page 256 DIAGNOSTICS Write GA built-in pattern [Check item] This test pattern is intended to judge whether or not the cause of an abnormality is located in or after the image processing board. If the test pattern is abnormal, there is an abnormality in or after the image process- ing board (PWM function or after).
  • Page 257 DIAGNOSTICS Electronic RDH GA built-in pattern [Check item] This test pattern is intended to determine if the electronic RDH board or image processing board is abnormal in the case where the copy image is abnormal despite the 36 mode pattern being normal. If the 36 mode pattern is normal but the test pattern is abnormal, there is an abnormality in either the elec- tronic RDH or the image processing board.

  • Page 258: Test Pattern Density Setting

    DIAGNOSTICS-1 DIAGNOSTICS [19] Test Pattern Density Setting [20] Service Data Output Set the density of the test pattern using the procedure de- Output a service data using the procedure described below. scribed below. If the 36 mode menu screen is opened, then Test Pattern Test Pattern Density Setting Mode is selected using the Output Mode selected, the test pattern setting screen will be...

  • Page 259: Mode

    DIAGNOSTICS Service data printing item Classification Data No. Item The relationship between the No. to be input using the test Normal Charging current paper pattern screen and the output contents is shown below. Developing bias 400 dpi Transfer current Separation AC Input No.
  • Page 260 CONTENTS 5. RADF PRODUCT SPECIFICATIONS ........5-1 CENTER CROSS-SECTIONAL DRAWING ....5-2 EXTERNALS .............. 5-2 DRIVE SECTION ............5-3 PAPER FEED SECTION ..........5-4 [1] Composition ........... 5-4 [2] Mechanisms ........... 5-4 [3] Disassembly and Re-assembly ...... 5-5 [4] Paper Feed Control ........5-11 CONVEYANCE SECTION ........

  • Page 261: Product Specifications

    PRODUCT SPECIFICATIONS 1. Type 3. Machine Data Type: ADF with original automatic re- Power supply: 24 V/5 V DC (supplied from the versal function main body) Max power consumption: 90 VA 2. Functions Weight: Approx. 12.5 kg/27.5 lbs Machine dimensions: Originals size: A3, B4, A4, A4R, B5, B5R and A5R/11"...

  • Page 262: Center Cross-Sectional Drawing

    CENTER CROSS-SECTIONAL DRAWING Switching guide Feed roller Paper feed roller Paper exit roller Registration drive roller Original paper feed Double feed tray Conveyance roller Conveyance belt prevention roller Registration driven roller Drive roller EXTERNALS Original protection cover Original paper feed tray Paper exit cover 5 - 2...

  • Page 263: Drive Section

    DRIVE SECTION Driven roller Conveyance roller Conveyance belt Drive roller Paper exit motor (M303) Registration drive roller Conveyance motor (M302) Original push pressure plate Paper feed motor (M301) Double feed prevention roller Feed roller Push pressure motor (M304) 5 - 3...

  • Page 264: Paper Feed Section

    PAPER FEED SECTION [1] Composition Conveyance motor Original push (M302) pressure plate Drive motor (M301) Push pressure motor (M304) [2] Mechanisms Mechanism Method Paper feed Stack automatic feed (upward feed) Double feed prevention Double feed prevention roller Push pressure motor Original size detection Original passage time detection (M304)

  • Page 265: Disassembly And Re-Assembly

    b. Control of the paper feed roller The paper feed roller is controlled by the paper feed motor Hinge retaining (M301). plate When the paper feed motor rotates in the forward direction, the drive force is transmitted to the paper feed roller and the Set screws Set screws feed roller via the paper feed drive shaft, causing pre-paper...
  • Page 266 (2) Open the RADF unit and set the two jigs (ADF positioning block) to the positioning piece (front, rear). Positioning positioning piece blocks (front,rear) (4) Open the RADF unit slowly and tighten the four set screws of the hinge retaining plate after removing the positioning block jig.
  • Page 267 (6) Close the RADF unit slowly. c. Check (7) Slacken the four height adjustment screws. Clearance between position piece (left side - front) and platen glass of the RADF unit. Standard: less than 0.1 mm (1) Put the two sheet of the copy paper (80g/m , 200mm ×...
  • Page 268 2. Replacing the Paper Feed Rubber and Feed (4) Remove the two set screws and remove the feed roller Rubber ass'y. a. Procedure (1) Remove the four set screws, then remove main body Set screw Set screw base plate (A). (2) Disconnect the relay connector.
  • Page 269 (7) Remove the two bearings from the metal bracket, then (11) Re-install the above parts in the opposite sequence to pull out the feed roller together with the shaft in the removal. direction of the arrow. Caution: When re-installing each pulley, do not forget to re- install each pin as well.
  • Page 270 3. Replacing the Double Feed Prevention Roller Caution: a. Procedure 1. Insert the six claws of the paper feed guide plate (1) Remove the four set screws, then remove main body (lower) into the square hole of the paper feed reinforcing plate securely.
  • Page 271 [4] Paper Feed Control 2. Signals a. Input signals (1) PS301 (PS301 → RADF CB) Original detection signal at the paper feed roller entrance 24VDC 103-A1 [L]: Original exists. 24VDC 103-A2 [H]: Original does not exist. M301 DRIVE A 103-A3 M301 (2) PS304 (PS304 →...

  • Page 272: Conveyance Section

    CONVEYANCE SECTION [1] Composition Conveyance belt Drive roller Driven roller [2] Mechanisms Mechanism Method Conveyance belt rotation Forward/reverse bidirectional rotation method Original stopping Stopper-less control method Scale plate Fixed type *1: Stopper-less control PS302 a. During paper feed The original received from the paper feed section is conveyed Scale plate to a point 2 mm away from the scale plate by the forward Original...

  • Page 273: Disassembly And Re-Assembly

    [3] Disassembly and Re-assembly b. During reversal During original reversal, the original received from the 1. Screws That Must not be Removed reversal section is conveyed to a point 2 mm away from the Do not remove the feed driven roller pressing force scale plate by the reverse rotation of the conveyance belt, adjustment screws and original push pressure plate then stops.
  • Page 274 (2) Remove the two set screws fixing the front of the base (5) Remove the conveyance belt. plate ass'y. (3) Remove the two set screws and remove positioning piece/F. Set screws Set screws Base plate Positioning ass'y piece/F Conveyance belt (6) Re-install the above parts in the opposite sequence to removal.
  • Page 275 (4) Slacken the two hex socket screws then remove the (3) Slacken the four set screws of the conveyance motor drive roller in the direction of the arrow. (M302). (4) Press the tension gauge (full scale 300g) against the center of the timing belrt. Hex socket Drive roller screws...
  • Page 276 [4] Conveyance Control 2. Signals a. Input signals (1) PS305 (PS305 → RADFCB) Paper feed original detection signal 24VDC 103-A7 [L]: Original exists. 24VDC 103-A8 [H]: Original does not exist. M302 DRIVE A 103-A9 M302 (2) DFRXD (MAIN BODY → RADFCB) M302 DRIVE A 103-A10 M302 DRIVE B...

  • Page 277: Reversal Section

    REVERSAL SECTION [1] Composition Paper exit cover Switching guide Conveyance roller Paper exit roller [2] Mechanisms When the original reversal solenoid is OFF, the switching guide is in the lower position at the conveyance roller side. Mechanism Method As a result, the original is exited. Reversal U-turn reversal Reversal roller rotation...
  • Page 278 [3] Disassembly and Re-assembly [4] Reversal/Exit Control 1. Adjusting the Original Reversal Solenoid (SD301) a. Procedure 24VDC 103-B2 (1) Remove the five set screws and remove main body 24VDC 103-B3 M303 DRIVE A 103-B4 base plate (C). M303 M303 DRIVE A 103-B5 (2) Remove the three set screws and remove main body M303 DRIVE B...
  • Page 279 2. Signals a. Input signals (1) PS306 (PS306 → RADFCB) Paper exit original detection signal [L]: Original exists. [H]: Original does not exist. (2) PS307 (PS307 → RADFCB) Reversal original detection signal [L]: Original exists. [H]: Original does not exist. (3) DFRXD (MAIN BODY →...

  • Page 280: Adjustments

    ADJUSTMENTS [1] Preparations RADF Mode (large size) Adjustment 12. Touch the Next adjustment key until "RADF original Remove dirt from the platen glass. stop position adjustment (two-sided original: Large)" Obtain the following items. appears in the message display box. * Original with a leading edge timing edge Copy Screen 13.

  • Page 281: Electrical Parts Layout Drawing

    ELECTRICAL PARTS LAYOUT DRAWING 1. Switch Sensor 2. Load 1 PS301 Original detection PS ! M301 Original feed Motor 2 PS302 Original transmission PS @ M302 Original conveyance Motor 3 PS303 Original exit cover detection PS # M303 Original exit Motor 4 PS304 No Original PS $ M304...

  • Page 282: Connector Layout Drawing

    CONNECTOR LAYOUT DRAWING 142(BK:3 PIN) 125(W:3 PIN) 126(W:3 PIN) 143(W:4 PIN) 124(W:3 PIN) 113(W:6 PIN) 123(R:3 PIN) 121(W:3 PIN) 127(W:3 PIN) 128(W:2 PIN) 116(R:3 PIN) 112(W:6 PIN) 131(W:8 PIN) 141(BK:4 PIN) 133(W:12 PIN) 134(W:3 PIN) 111(W:6 PIN) 129(W:3 PIN) 115(W:2 PIN) 101(W:9 PIN) RADF CB 104(W:20 PIN)
  • Page 283 RADF OVERALL WIRING DIAGRAM-1 111-1 24V DC 103-A1 111-2 24V DC 103-A2 ORIGINAL 111-3 M301 DRIVE A 103-A3 PAPER M301 111-4 FEED M301 DRIVE A 103-A4 MOTOR 111-5 M301 DRIVE B 103-A5 111-6 M301 DRIVE B 103-A6 112-1 24V DC 103-A7 112-2 103-A8...

  • Page 284: Radf Timing Chart

    " × 11", ONE SIDE ORIGINALS, THREE SHEETS SET) RADF TIMING CHART-1 (A4/8 (sec) Time (sec) Symbol Item 10mS 10mS 10mS M301 Paper feed motor 28step 28step 28step 81step 81step 81step 35step 35step M302 Conveyance motor 147step 380mS 67step 67step M303 Original exit motor 265step...
  • Page 285 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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