Xerox WorkCentre 385 Service Manual
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Xerox WorkCentre 385 Service Manual

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Transmittal Page
Product
Title
Part Number
WorkCentre 385
Service Manual
701P14250
Status
Date
Dec 1998
Initial Issue
www.printcopy.info

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Table of Contents
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Summary of Contents for Xerox WorkCentre 385

  • Page 1 Transmittal Page Product Title Part Number WorkCentre 385 Service Manual 701P14250 Status Date Dec 1998 Initial Issue www.printcopy.info...
  • Page 2 www.printcopy.info...
  • Page 3 Binder Inserts - Cut on the dotted lines WorkCentre 385 Service Manual WorkCentre 385 Service Manual www.printcopy.info...
  • Page 4 www.printcopy.info...
  • Page 5 XEROX WorkCentre 385 Service Manual DANGER AVOID DIRECT EXPOSURE TO BEAM Invisible laser radiation Certain components this product susceptible damage from electrostatic discharge. Observe all ESD procedures to avoid 701P14250 component damage. Dec 1998 www.printcopy.info...
  • Page 6 Xerox service documentation is intended for use by certified, product trained service personnel only. Xerox does not warrant or represent that such documentation is complete. Nor does Xerox represent or warrant that it will notify or provide to such customer any future changes to this documentation.
  • Page 7 Revision Control List Product Title Part Number 701P14250 WorkCentre 385 SERVICE MANUAL Page Revision Page Revision Page Revision Page Revision Page Revision Page Revision Title 12/98 12/98 4-27 12/98 12/98 7-16 12/98 12/98 12/98 4-28 12/98 12/98 7-17 12/98 12/98...

  • Page 8: Table Of Contents

    7. Theory of Operation - - - - - - - - 7-1 Section Contents- - - - - - - - - - - - - - - - - - 7-1 12/98 www.printcopy.info Table of Contents WorkCentre 385...

  • Page 9: About This Manual

    Use this section to isolate common image quality defects. Use of controls or adjustments other than those specified in this manual may result in an exposure to dangerous laser radiation. The WorkCentre 385 Section 4 Repair / Adjustment certified comply...
  • Page 10 The Main PBA has a lithium battery which is not a spared item. If the Main PBA fails, Page The date of issue on the bottom of return the assembly to the Xerox premises each page. for disposal in accordance...

  • Page 11: Installation

    AC Power Cord - - - - - - - - - - - - - - - - - - - - - - 1-6 Laser Printer Cartridge - - - - - - - - - - - - - - - - - 1-7 * Not available in all markets. 12/98 www.printcopy.info WorkCentre 385 Introduction 1 - 1...

  • Page 12: Document Input Tray

    Fold out the extender, if necessary. Insert one end first, then the other end by pulling this leg inward to make the tray easy to insert. Extender 12/98 www.printcopy.info Document Tray & Document Exit Tray WorkCentre 385 1 - 2...

  • Page 13: Handset And Handset Cradle

    Plug the cradle’s modular cords into the modular jacks on the left side of your machine. Black Cord Route the excess cord so that it can be inserted into the cradle. 12/98 www.printcopy.info Handset and Handset Cradle WorkCentre 385 1 - 3...

  • Page 14: Printer Exit Tray

    Holding the flexible side end, insert two tabs on the side ends into the corresponding slots. Fold out the extender, if necessary. Extender 12/98 www.printcopy.info Printer Exit Tray WorkCentre 385 1 - 4...

  • Page 15: Telephone Line

    Plug the cord of your extension phone or answering machine into the socket marked EXT.LINE on the back of the machine. To a standard phone wall jack To a regular phone or answering machine 12/98 www.printcopy.info Telephone Line & Extension Phone WorkCentre 385 1 - 5...

  • Page 16: Parallel Cable

    Parallel Cable AC Power Cord The WorkCentre 385 parallel interface port allows you to use it with your Plug one end of the cord into the back of the machine and the other end personal computer. It is recommended that the parallel cable supports IEEE- into a standard AC power outlet.

  • Page 17: Laser Printer Cartridge

    Shake the cartridge from side to side 5 or 6 times to distribute the toner evenly inside the cartridge. Pull the cover release buttons toward you, open the cover. Unpack the cartridge, then carefully remove the sealing tape. 12/98 www.printcopy.info Printer Cable & AC Power Cord WorkCentre 385 1 - 7...
  • Page 18 Find the cartridge slots inside the printer, one on each side. Grasp the handle and slide the cartridge down between the cartridge slots, until it drops into place. 10/98 12/98 www.printcopy.info Printer Cable & AC Power Cord WorkCentre 385 1 - 8...
  • Page 19 Close the cover. Make sure that the cover is securely closed. 12/98 www.printcopy.info Printer Cable & AC Power Cord WorkCentre 385 1 - 9...
  • Page 20 12/98 www.printcopy.info WorkCentre 385 1 - 10...

  • Page 21: Repair Procedures

    Paper Jam (mis-feeding) - - - - - - - - - - - - - - 2-11 Paper Jam (Jam 1) - - - - - - - - - - - - - - - - - - 2-12 12/98 www.printcopy.info WorkCentre 385 Introduction...

  • Page 22: Error Messages

    ASSIGNED pad, or assign a number. assigned to it. Load the recording paper in the paper NO PAPER The Paper Tray is empty. feeder. 12/98 www.printcopy.info Error Messages WorkCentre 385 2 - 2...
  • Page 23 POWER FAILURE A power failure has occurred. printed automatically when the power is restored. The machine is warming up and is PLEASE WAIT Wait until the machine is on-line. off line. 12/98 www.printcopy.info Error Messages WorkCentre 385 2 - 3...

  • Page 24: General Error Repair Procedures

    - when loading, tap the paper until paper 6. Does the Paper Guide Adjust detect sensor senses that paper is loaded. distort the paper. 5. When using long paper, use the Extender. 6. Adjust Guide. 12/98 www.printcopy.info General Error Repair Procedures WorkCentre 385 2 - 4...
  • Page 25 1. Are the Paper Guides adjusted 1. Reload the paper and adjust the paper guides Skew to the paper width without to just touch the sides of the paper. causing the paper to curl? 12/98 www.printcopy.info General Error Repair Procedures WorkCentre 385 2 - 5...

  • Page 26: General Troubleshooting Reference

    3. Engine PBA 4. Main PBA Send A FAX Possible Cause: 1. Solenoid Solenoid 2. Joint PBA Energized? 3. Engine PBA 4. Main PBA Receive a FAX Check for Paper Feed blockage. 12/98 www.printcopy.info General Troubleshooting Reference WorkCentre 385 2 - 6...
  • Page 27 Possible Cause: 1. Laser Printing Cartridge 1. Main PBA 2. LSU Unit 3 . H V P S P B A 4. Joint PBA 5. Engine PBA 6. Main PBA 12/98 www.printcopy.info General Troubleshooting Reference WorkCentre 385 2 - 7...
  • Page 28 1. CIS 2. Scan PBA 3. Main PBA Possible Cause: 1. LIU PBA Connect 2. Main PBA Cables Possible Cause: Try operation 1. LIU PBA again. OK 2. Main PBA 12/98 www.printcopy.info General Troubleshooting Reference WorkCentre 385 2 - 8...

  • Page 29: No Power (No Lcd Display And Led Off)

    Laser Printer Insert Cartridge is cartridge inserted? Replace the SMPS PBA (REP 4.17), then the Engine PBA (REP 4.17), then the Main PBA (REP 4.19). 12/98 www.printcopy.info No Power (No LCD Display and LED off) WorkCentre 385 2 - 9...

  • Page 30: Fuser Error

    SMPS PBA (REP 4.17), power is being then the Engine PBA supplied? (REP 4.17), then the Thermistor (REP 4.29). Replace the Engine PBA (REP 4.17), then the Thermistor (REP 4.29). 12/98 www.printcopy.info Fuser Error WorkCentre 385 2 - 10...

  • Page 31: Paper Jam (Mis-Feeding)

    Pull out the The extender is Paper end curled? extender. pulled out? Try freshly unwrapped <Recommendation> paper. Use the MPF for the thick paper such as envelopes and cardstock. 12/98 www.printcopy.info Paper Jam (mis-feeding) WorkCentre 385 2 - 11...

  • Page 32: Paper Jam (Jam 1)

    Check guide too thin or Check for blockage transfer is sensitive to static or drag in the feed grounded electricity? area, then reload the paper. Use the recommended paper. 12/98 www.printcopy.info Paper Jam (Jam 1) WorkCentre 385 2 - 12...

  • Page 33: Image Quality Repair Procedures

    White Spot - - - - - - - - - - - - - - - - - - - - - - - - 3-15 Blurred Image /OHP (Overhead Projector) - - 3-16 Poor Fusing Grade- - - - - - - - - - - - - - - - - - - 3-17 12/98 www.printcopy.info WorkCentre 385 Introduction 3 - 1...

  • Page 34: General Image Quality Errors

    PBA, then HVPS PBA. Background 1. High voltage normal? 1. Replace HVPS PBA. See also “Back- 2. Laser Printer Cartridge is 2. Replace Laser Printer Cartridge. ground” Troubleshoot- contaminated? ing Flow. 12/98 www.printcopy.info General Image Quality Errors WorkCentre 385 3 - 2...
  • Page 35 3. Check transfer roller left and right Density” Troubleshoot- Developer roller and blade’s spring. ing Flow. pressure force unbalance end to end. 3. Transfer roller’s pressure force unbalance end to end. 12/98 www.printcopy.info General Image Quality Errors WorkCentre 385 3 - 3...
  • Page 36 2. Clean charge roller. 3. Contamination of heat roller. Flow. 3. Replace fuser unit or damaged 4. Malfunction of LSU. rollers. 4. Replace LSU, HVPS PBA, Engine PBA, or Main PBA. 12/98 www.printcopy.info General Image Quality Errors WorkCentre 385 3 - 4...

  • Page 37: Periodic Abnormal Images

    47.1mm Black side contamination/ transfer fault Heat Roller 56.4mm Black spot, White spot Pressure Roller 56.5mm Black side contamination Note: If any of the above occurs replace the defective component. 12/98 www.printcopy.info Periodic Abnormal Images WorkCentre 385 3 - 5...

  • Page 38: No Image

    No Print Image? (REP 4.17), then the HVPS PBA (REP 4.23), then the Main PBA (REP 4.19). Self test pattern prints? Check connection to computer, then replace the Main PBA (REP 4.19). 12/98 www.printcopy.info No Image WorkCentre 385 3 - 6...

  • Page 39: All Black

    All Black Replace the Laser Printer Cartridge, then the LSU Unit (REP 4.14), then the Engine PBA (REP 4.17), then the HVPS PBA (REP 4.23), then the Main PBA (REP 4.19). 12/98 www.printcopy.info All Black WorkCentre 385 3 - 7...

  • Page 40: Vertical White Line (Band)

    (REP 4.14). white band? Clean the Fuser Area. Clean the paper path and LSU Optical Path. Then replace the Laser Printer Cartridge, then the LSU Unit (REP 4.14). 12/98 www.printcopy.info Vertical White Line (Band) WorkCentre 385 3 - 8...

  • Page 41: Dark Image

    Dark Image “Dark” selected via Control Panel? Change to “Normal” and re-test. Same at “Normal” setting? Replace the Laser Printer Cartridge, then the LSU Unit (REP 4.14). 12/98 www.printcopy.info Dark Image WorkCentre 385 3 - 9...

  • Page 42: Background

    Main PBA (REP 4.19). Replace the Laser Printer Cartridge, then the LSU Unit (REP 4.14), then the HVPS PBA (REP 4.23), then the Engine PBA (REP 4.17), then the Main PBA (REP 4.19). 12/98 www.printcopy.info Background WorkCentre 385 3 - 10...

  • Page 43: Ghost

    Ghost Replace the ELA Unit-PTL (PL 3.1). Lamp works Replace the Laser Printer Cartridge, then the LSU Unit (REP4.14), then the HVPS PBA (REP 4.23). 12/98 www.printcopy.info Ghost WorkCentre 385 3 - 11...

  • Page 44: Black Dot

    Black Dot Fuser Clean or replace contaminated? defective Fuser components. Replace Laser Printer Cartridge. 12/98 www.printcopy.info Black Dot WorkCentre 385 3 - 12...

  • Page 45: Horizontal Band

    56.1 mm? Cartridge, then the HVPS PBA (REP 4.23). Replace the HVPS PBA Heat roller is defective, replace the Fuser (REP 4.23), then the Laser Printer Cartridge. Assembly (REP 4.24). 12/98 www.printcopy.info Horizontal Band WorkCentre 385 3 - 13...

  • Page 46: Irregular Density

    Replace the ELA Unit- Lamp works PTL Unit (REP 4.39). Properly? Replace the Laser Contamination Printer Cartridge. Blurred images? on the PTL Lamp? Replace the LSU Unit (REP 4.14). Clean the PTL Lamp. 12/98 www.printcopy.info Irregular Density WorkCentre 385 3 - 14...

  • Page 47: White Spot

    White Spot Replace Laser Printer Occurs Cartridge, then the HVPS PBA every 94mm? (REP 4.23). Replace Laser Printer Cartridge. 12/98 www.printcopy.info White Spot WorkCentre 385 3 - 15...

  • Page 48: Blurred Image /Ohp (Overhead Projector)

    Other components may be Reduce the number of slides touching the fan and preventing and re-insert after paper it from turning. Check for check LED turns off. blockage and repair. 12/98 www.printcopy.info Blurred Image /OHP (Overhead Projector) WorkCentre 385 3 - 16...

  • Page 49: Poor Fusing Grade

    Spring tension, then replace Halogen Lamp (REP 4.28), the Pressure Roller then the Engine PBA (REP 4.25), then the (REP 4.17). right and left MEA ETC- Holder P/R (PL 3.1). 12/98 www.printcopy.info Poor Fusing Grade WorkCentre 385 3 - 17...
  • Page 50 12/98 www.printcopy.info WorkCentre 385 3 - 18...

  • Page 51: Repair/Adjustment

    PTL Unit - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-48 12/98 www.printcopy.info WorkCentre 385 4 - 1...
  • Page 52 Many of the parts are held in places with plastic latches. The latches break easily; release them carefully. To remove these parts, press the hook end of the latch away from the part to which it is latched. 12/98 www.printcopy.info Introduction WorkCentre 385 4 - 2...
  • Page 53 If the roller is heavily worn, replace it with a new one. Disconnect the Handset and Hook Switch connectors from the machine. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.2 White Roller WorkCentre 385 4 - 3...
  • Page 54 Unplug the OPE connector from the Scan PBA and remove ground screw. REP 4.3 OPE Cover Removal Remove Front Cover (REP 4.11). Remove two screws, then remove the Scan Cover. 12/98 www.printcopy.info REP 4.3 OPE Cover WorkCentre 385 4 - 4...
  • Page 55 Unlatch the bottom ends, then remove the OPE cover. Remove the stopper holding the OPE Cover. Remove ground wire from routing tabs on back of OPE cover. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.3 OPE Cover WorkCentre 385 4 - 5...
  • Page 56 Insert a small flat blade screw driver at right and left cut out in ADF Holder to release locking tabs on each side of ADF Rubber. ADF Holder ADF Sheet ADF Rubber Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.4 ADF Rubber WorkCentre 385 4 - 6...
  • Page 57 OPE Cover (REP 4.3). Remove five screws, then remove the scan upper frame. Note: When replacing screws, tighten in reverse numeric order. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.5 OPE PBA WorkCentre 385 4 - 7...
  • Page 58 Remove five screws, then remove the scan upper frame. Replacement Reinstall the components in the reverse order. Note: When you replace the pinch spring, make sure that the pinch spring is properly latched. 12/98 www.printcopy.info REP 4.6 Pinch Roller WorkCentre 385 4 - 8...
  • Page 59 REP 4.7 Scan PBA the PBA. Removal Remove the following: Front Cover (REP 4.11). Remove two screws, then remove the scan cover. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.7 Scan PBA WorkCentre 385 4 - 9...
  • Page 60 White Roller (REP 4.2). Open the control panel, then remove four screws. Replacement Reinstall the components in the reverse order. Lift the scan lower frame up. 12/98 www.printcopy.info REP 4.8 Rollers (ADF, Drive Roller, Exit Roller) WorkCentre 385 4 - 10...
  • Page 61 Rollers (REP 4.8). Remove two screws securing the motor, unplug the motor connector from the scan PBA, then remove the motor. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.9 Scan Motor WorkCentre 385 4 - 11...
  • Page 62 REP 4.10 CIS Removal Remove the CIS using the instructions for Rollers (REP 4.8). Remove one screw, unplug one connector, then remove the CIS. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.10 CIS WorkCentre 385 4 - 12...
  • Page 63 Pull the cover release button on both sides of the machine, and open the front cover. Remove the cover stopper securing the OPE unit. To remove the stopper, slide it until it reaches slot at the center, then take it out. 12/98 www.printcopy.info REP 4.11 Front Cover WorkCentre 385 4 - 13...
  • Page 64 Wide open the cover. Pull the bottom left end of the cover toward you to unlatch the OPE cover, and take it out. Disconnect the ground wire and connector. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.11 Front Cover WorkCentre 385 4 - 14...
  • Page 65 REP 4.12 Rear Cover Unlatch the bottom ends, then remove the rear cover. Removal Remove three screws. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.12 Rear Cover WorkCentre 385 4 - 15...
  • Page 66 Pull the cover release button on both sides of the machine, and open the front cover. Remove two screws. Remove the top cover. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.13 Top Cover WorkCentre 385 4 - 16...
  • Page 67 Top Cover (REP 4.13). Remove four screws, unplug 2 connectors from the LSU, then remove the LSU. 6-pin connector on side 5-pin connector Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.14 LSU WorkCentre 385 4 - 17...
  • Page 68 Remove the following: Front Cover (REP 4.11). Top Cover (REP 4.13). Handset & Cradle (REP 4.1), if attached. Remove two screws. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.15 Side Covers WorkCentre 385 4 - 18...
  • Page 69 Pull the cover release button on both sides of the machine, and open the front cover. Press the latches at both ends of the roller, then remove the roller. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.16 Transfer Roller WorkCentre 385 4 - 19...
  • Page 70 REP 4.17 SMPS/Engine Controller PBA Removal Remove the following: LIU PBA (REP 4.18). Main PBA (REP 4.19). Turn the machine over Remove three screws securing the shield, then remove the shield. 12/98 www.printcopy.info REP 4.17 SMPS/Engine Controller PBA WorkCentre 385 4 - 20...
  • Page 71 Unplug four connectors, then remove the SMPS and the engine PBA. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.17 SMPS/Engine Controller PBA WorkCentre 385 4 - 21...
  • Page 72 PBA. Removal Turn the machine over. Remove three screws securing the shield, then remove the shield. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.18 LIU PBA WorkCentre 385 4 - 22...
  • Page 73 REP 4.19 Main PBA CAUTION The Main PBA has a lithium battery which is not a spared item. If the Main PBA fails, return the assembly to the Xerox premises for disposal in accordance with local regulations. Removal Remove the following: LIU PBA (REP 4.18).
  • Page 74 REP 4.20 Joint PBA Removal Remove the following: SMPS (REP 4.17). Unplug all connectors from the PBA, remove three screws, then remove the PBA. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.20 Joint PBA WorkCentre 385 4 - 24...
  • Page 75 Remove the following: SMPS (REP 4.17). Remove two screws, unplug one connector from the Joint PBA, then remove the Sensor PBA. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.21 Sensor PBA WorkCentre 385 4 - 25...
  • Page 76 Side Covers (REP 4.15). Remove six screws securing the gear bracket, unplug the connector from the motor, then remove the gear bracket. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.22 Gear Bracket & Motor WorkCentre 385 4 - 26...
  • Page 77 Note: When you reassemble the HVPS PBA, make sure that the high voltage electrodes, contacts, springs and pins are inserted correctly. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.23 HVPS PBA WorkCentre 385 4 - 27...
  • Page 78 WARNING Fuser components are hot. Wait until components cool before you begin work. Removal Remove the following: Side Covers (REP 4.15). Remove the exit guide as shown. Remove four screws. 12/98 www.printcopy.info REP 4.24 Fuser WorkCentre 385 4 - 28...
  • Page 79 Unlatch the right end, then push the right end slightly inward. A flat blade screwdriver may be needed to release the pin on the right end. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.24 Fuser WorkCentre 385 4 - 29...
  • Page 80 REP 4.25 Pressure Roller Removal Remove the following: Side Covers (REP 4.15). Fuser (REP 4.24). Remove the roller. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.25 Pressure Roller WorkCentre 385 4 - 30...
  • Page 81 Unlatch the front end, then lift the upper frame up. Removal Remove the following: Side Covers (REP 4.15). HVPS PBA (REP 4.23). Remove ten screws. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.26 Upper Frame WorkCentre 385 4 - 31...
  • Page 82 Upper Frame (REP 4.26). Remove clip in front of roller shaft on the left side. Remove E-ring at the right end of the roller, then remove the gear clutch. 12/98 www.printcopy.info REP 4.27 Pickup Roller WorkCentre 385 4 - 32...
  • Page 83 Pull the shaft forward and to the left to view a pin at the right end. Remove the pin passing through the shaft, then pull the roller shaft to the right, and lift it up. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.27 Pickup Roller WorkCentre 385 4 - 33...
  • Page 84 Fuser components are hot. Wait until components cool before you begin work. Removal Remove the following: Fuser Assembly (REP 4.24). Remove two screws from the fuser assembly. IPR Ground Plate 12/98 www.printcopy.info REP 4.28 Halogen Lamp WorkCentre 385 4 - 34...
  • Page 85 NOTE: Insure that the IPR Ground Plate is contacting the Fuser Roller after replacement. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.28 Halogen Lamp WorkCentre 385 4 - 35...
  • Page 86 Be careful not to bend the IPR Ground Plate. Remove the heat roller. Removal Remove the following: Fuser Assembly (REP 4.24). Remove two screws from the fuser assembly. IPR Ground Plate Remove two screws, then remove the Thermostat. 12/98 www.printcopy.info REP 4.29 Thermistor WorkCentre 385 4 - 36...
  • Page 87 Unlatch the fuser cover, then take it out. Remove one screw securing the thermistor, then remove the thermistor. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.29 Thermistor WorkCentre 385 4 - 37...
  • Page 88 REP 4.30 Exit-Lower Unit Removal Remove the following: Fuser Assembly (REP 4.24). Remove one screw, then remove the exit-lower assembly. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.30 Exit-Lower Unit WorkCentre 385 4 - 38...
  • Page 89 LIU PBA (REP 4.18). Unplug the speaker connector from the Main PBA. Remove two screws from the speaker bracket, then remove the speaker. Speaker Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.31 Speaker Assembly WorkCentre 385 4 - 39...
  • Page 90 SMPS & Engine PBA (REP 4.17). Main PBA (REP 4.19). Remove two screws securing the solenoid, unplug one connector from the Joint PBA, then remove the solenoid. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.32 Solenoid WorkCentre 385 4 - 40...
  • Page 91 Main PBA (REP 4.19). Remove two screws securing the fan, unplug one connector from the Joint PBA, then remove the fan. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.33 Fan Motor WorkCentre 385 4 - 41...
  • Page 92 Remove two screws, unplug one connector from the Joint PBA, then remove the frame unit. Replacement Reinstall the components in the reverse order. Then, unlatch the paper empty assembly, and take it out. 12/98 www.printcopy.info REP 4.34 P-Empty Assembly & Actuator WorkCentre 385 4 - 42...
  • Page 93 Main PBA (REP 4.19). Sensor PBA (REP 4.21). Remove two screws, unplug one connector from the Joint PBA, then remove the frame unit. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.35 Paper Separator WorkCentre 385 4 - 43...
  • Page 94 Release the springs at both sides of the unit, then remove the Knock Up Unit. Remove the Spring Holder with small spring on rear post. 12/98 www.printcopy.info REP 4.36 Knock Up Unit, Spring & Holder, Separate Unit WorkCentre 385 4 - 44...
  • Page 95 Remove the Separate Unit. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.36 Knock Up Unit, Spring & Holder, Separate Unit WorkCentre 385 4 - 45...
  • Page 96 REP 4.37 Paper Separate Units (Left, Right) Removal Remove the following: Knock Up Unit (REP 4.36). Unlatch the separate units, then take them out. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.37 Paper Separate Units (Left, Right) WorkCentre 385 4 - 46...
  • Page 97 REP 4.38 Gear Feed Removal Remove the following: Gear Bracket (REP 4.22). Remove two screws, then remove the Gear Feed. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.38 Gear Feed WorkCentre 385 4 - 47...
  • Page 98 Remove the following: LSU (REP 4.14). Main PBA (REP 4.19). Joint PBA (REP 4.20). EMI IPR Shield (PL 3.1) Remove one screw. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.39 PTL Unit WorkCentre 385 4 - 48...
  • Page 99 REP 4.40 Fuser Deve Removal Remove the following: SMPS/Engine Controller PBA (REP 4.17). HVPS PBA (REP 4.23). Unplug the connector from the Joint PBA. Replacement Reinstall the components in the reverse order. 12/98 www.printcopy.info REP 4.40 Fuser Deve WorkCentre 385 4 - 49...
  • Page 100 12/98 www.printcopy.info WorkCentre 385 4 - 50...
  • Page 101 Part Number Index This index lists all the spared parts in the system in numerical order. Each number is followed by a reference to the parts list on which the part may be found. 12/98 www.printcopy.info WorkCentre 385 Introduction 5 - 1...
  • Page 102 PL 1.1 Main Assembly 12/98 www.printcopy.info PL 1.1 Main Assembly WorkCentre 385 5 - 2...
  • Page 103 PMO-Stacker RX (B) PMO-Stacker RX (A) 054K18920 MEA Unit-Duct Assy 160K64040 PBA LIU (USA) 160K64850 PBA LIU (German, Italian, UK) 160K64860 PBA LIU (XLA, XBRA) 160K64070 PBA Sub-Joint 160K64000 PBA Main 12/98 www.printcopy.info PL 1.1 Main Assembly WorkCentre 385 5 - 3...
  • Page 104 PL 2.1 OPE Unit Assembly 12/98 www.printcopy.info PL 2.1 OPE Unit Assembly WorkCentre 385 5 - 4...
  • Page 105 PMO-Pinch Roller NPR-Sensor Bracket CBF-Ground Harness 022E23860 MEC-Pinch MEC-Antistatic Brush PMO-Pinch Roller 019E43540 PMO-ADF Holder 019E43930 PPR-ADF Sheet 019E43530 RPR-ADF Rubber PMO-Scan Upper 830E28530 PMO-Tie Stopper 600K72020 Hardware Kit 12/98 www.printcopy.info PL 2.1 OPE Unit Assembly WorkCentre 385 5 - 5...
  • Page 106 PL 3.1 Frame Lower Assembly 57 58 12/98 www.printcopy.info PL 3.1 Frame Lower Assembly WorkCentre 385 5 - 6...
  • Page 107 ELA Hou-Fuser Assy (110V) 022K68000 MEA Unit Pickup 032K03170 ELA Hou-Exit Assy 016E15060 PMO-Bushing Shaft 809E24890 Spring-Stopper L 809E24960 Spring-Extension 120E19130 PMO-Actuator_Exit 600K72020 Hardware Kit RMO-Rubber Support 130E09090 Sensor PBA 12/98 www.printcopy.info PL 3.1 Frame Lower Assembly WorkCentre 385 5 - 7...
  • Page 108 PL 4.1 Fuser Assembly 12/98 www.printcopy.info PL 4.1 Fuser Assembly WorkCentre 385 5 - 8...
  • Page 109 ELA Unit-Fuser Deve PMO-Frame Fuser PMO-Cap Plate FU U IPR-Plate Fuser Deve PMO-Cap Plate FU L NPR-Terminal, Lamp NPR-Electrode L AC 130E09360 Thermostat, 125/250V, 15/7.5A NPR-Electrode_R AC 600K72020 Hardware Kit 12/98 www.printcopy.info PL 4.1 Fuser Assembly WorkCentre 385 5 - 9...
  • Page 110 PL 5.1 Front Assembly 12/98 www.printcopy.info PL 5.1 Front Assembly WorkCentre 385 5 - 10...
  • Page 111 PMO-Gear ADF MEC-Drive Roller 6000 PMO-Gear Drive (B4) 022E23880 MEC-Roller Drive 6000 MEC-Roller ADF ICT-Shaft ADF PMO-Bushing ICT-Spring Clutch Gear-Idle 3315 Gear-Spur Washer-Plain, M4, ID4.1, OD7.0 PMO-Gear Trans (B4) 12/98 www.printcopy.info PL 5.1 Front Assembly WorkCentre 385 5 - 11...
  • Page 112 022K67980 120E19120 600K72020 022K67990 120E19130 600K72020 022K68000 121E15480 695E58680 022K68010 122E02480 802E17610 032K03170 122E02490 802E17760 038K12830 126K12890 802E17770 050K45850 126K12970 802E17780 050K45860 126K13090 802E17790 050K45870 127E12600 802E17800 050K45880 127K30150 802E17810 12/98 www.printcopy.info Part NO. Index WorkCentre 385 5 - 12...

  • Page 113: General Procedures

    LCD Display - - - - - - - - - - - - - - - - - - - - - - - 6-21 During Communication - - - - - - - - - - - - 6-21 If a Communication Problem Occurs: - - 6-21 12/98 www.printcopy.info WorkCentre 385 Introduction 6 - 1...

  • Page 114: Precautions

    The WorkCentre 385 is a Class 1 laser Components critical for safety are indicated in the product. During servicing, the laser beam parts list. Use only replacement components that could cause eye damage if looked at directly.
  • Page 115 Do not remove a replacement ESD from its protective packaging until immediately before installing it. Most replacement ESDs are packaged with all leads shorted together by conductive foam, aluminum foil, or a comparable conductive material. 12/98 www.printcopy.info WorkCentre 385 Precautions 6 - 3...

  • Page 116: Specifications

    SUPER FINE: 15.4 lines /mm (392 dpi) 75 g/m (30 Pages) Photo Scale: 256 shades One-touch dial: 20 locations Scanning period: STANDARD: 2.5 ms/line LCD: 16 characters x 2 lines FINE: 2.5 ms/line SUPER FINE: 2.5 ms/line 12/98 www.printcopy.info Specifications WorkCentre 385 6 - 4...

  • Page 117: Printer

    AC 220V ~ 240V ± 15% 50/60Hz ± 3Hz Fusing System: Temperature & Pressure Power Consumption Max. 450Wpeak OZONE Emission: Max. 0.1 PPM(8 Hours) Avg. 150Wh Power Saving Consumption Avg. 25Wh Sleeping Mode Certification & Compliance FCC,UL,CSA 12/98 www.printcopy.info Specifications WorkCentre 385 6 - 5...

  • Page 118: Smps (Switching Mode Power Supply)

    Over Current Protect 24V: 2.7A ± 10% (by C’ct) Transfer Roller 50,000 Pages 5V: A ± 10% (by C’ct) Fuser 30,000 Pages Over Voltage Protect 24V: 33V Driver 50,000 Pages 5V: 5.6V 12/98 www.printcopy.info Specifications/Preventative Maintenance WorkCentre 385 6 - 6...

  • Page 119: Test Mode

    It is best when the wave form is level. If there are many points sharply broken, perform the Make shading procedure several times until you get a level waveform. 12/98 www.printcopy.info Test Mode WorkCentre 385 6 - 7...

  • Page 120: Memory Test

    Scroll to the options by pressing UP or Down repeatedly until you find the FLASH VER.:1.0.0 one you want. ENGINGE VER. VER 1.0.1 Press START key. Key in the number of pages. Press START key. 12/98 www.printcopy.info Test Mode WorkCentre 385 6 - 8...
  • Page 121 ASCII code PROTOCOL DUMP LIST AUG-20-1998 06:35 FIF DATA ASCII 61005820003380140200001302090018010000 2020202020202020202020202020202020202020 00000000 01110111 00010111 00100010 61005020003380140200001302090018010000 2020202020202020202020202020202020202020 00000000 01110111 00010111 00100010 2020202020202020202020202020202020202020 00000000 01100001 00010101 00000000 2020202020202020202020202020202020202020 00000000 01100001 00010101 00000000 12/98 www.printcopy.info WorkCentre 385 Maintenance List 6 - 9...

  • Page 122: System Setup

    To change the status, you can also press the number of the status in the display. The display shows the next setup menu. If you return to Standby mode, press Stop . 12/98 www.printcopy.info System Setup WorkCentre 385 6 - 10...
  • Page 123 You can choose an alarm tone to 1: ON • Alarm Sound sound when an error occurs (ALARM 2: OFF • Key Sound SOUND) or any key is pressed (KEY SOUND). 12/98 www.printcopy.info WorkCentre 385 System Setup 6 - 11...
  • Page 124 You can reset the page counter to zero (0). To reset the counter, the passcode (1934) is required. Flash Download This function allows you to download 1: ON newly updated ROM into the machine. 2: OFF 12/98 www.printcopy.info System Setup WorkCentre 385 6 - 12...

  • Page 125: Setting The Date And Time

    If you want to insert a space in the name, you can also use Right button to move the cursor to skip the position. 12/98 www.printcopy.info WorkCentre 385 Setting the Date and Time 6 - 13...

  • Page 126: Memory Clear

    Enter . Otherwise, you can enter the number of the memory. The LCD prompts you to confirm your selection. Press 1 to choose “YES”. 12/98 www.printcopy.info Memory Clear WorkCentre 385 6 - 14...

  • Page 127: System Data Set-Up

    The password is preset to * 9 * at factory. Enter the desired code 0 to 9 on the number keypad. 12/98 www.printcopy.info WorkCentre 385 System Data Set-up 6 - 15...
  • Page 128 Enter . centimeters on the second page. If the fax machine cannot reduce the data to fit into one page with the feature enabled, the data is 12/98 www.printcopy.info System Data Set-up WorkCentre 385 6 - 16...
  • Page 129 This feature You can easily suspend or change Distinctive enables all transmission documents are 12/98 www.printcopy.info WorkCentre 385 System Data Set-up 6 - 17...

  • Page 130: Confirming System Data Settings

    Press 2 to disable the feature. • Clock Mode - Use this feature to set the clock mode. Press 1 to select 12 hour mode. Press 2 to select 24 hour mode. 12/98 www.printcopy.info System Data Set-up WorkCentre 385 6 - 18...

  • Page 131: System Data Settings In Tech- Mode

    You can exit from setup mode at any time by pressing Stop . When you press Stop , the machine stores the options you’ve already changed and returns to Standby mode. 12/98 www.printcopy.info WorkCentre 385 System Data Set-up 6 - 19...
  • Page 132 The level within the range of -4 dBm to -15 dBm is acceptable. Enter the desired value using the dial keypad. Receive Sensitivity High/Normal High sensitivity is between 0 and -49 dBm. Normal sensitivity is -43 dBm. Silence Time 12sec/Unlimit 12/98 www.printcopy.info System Data Set-up WorkCentre 385 6 - 20...

  • Page 133: Lcd Display

    C of session. • LINE ERROR: machine cannot connect or has lost connection with the remote machine. Additional messages, not shown above, will appear in the TX/RX journal printed in service mode. 12/98 www.printcopy.info WorkCentre 385 LCD Display 6 - 21...
  • Page 134 12/98 www.printcopy.info WorkCentre 385 6 - 22...

  • Page 135: Theory Of Operation

    Major Functions Of Parts - - - - - - - - - - 7-43 SMPS (Switching Mode Power Supply) - 7-44 AC Input Stage - - - - - - - - - - - - - - - - - 7-44 12/98 www.printcopy.info WorkCentre 385 Introduction 7 - 1...

  • Page 136: Connection Diagram

    CN405 CN406 CN403 MAIN P_EMPTY FEED CN401 SENSOR CN402 CN404 CN408 NOT AVAILABLE CLUTCH ENGINE DEVELOPER UNIT LASER UNIT SCAN HVPS MOTOR COVER OPEN S/W NOT AVAILABLE BUZZER NOT AVAILABLE LINE 12/98 www.printcopy.info Connection Diagram WorkCentre 385 7 - 2...

  • Page 137: System Block Diagram

    8 BIT ADC Part SCAN CNTR 14400 bbs I-LIU Speech FAST HANDSET Modem I/O PORT External Dialer Phone Detection Ringer LINE FEED EXTERNAL Part UART MOTOR PHONE MOTOR AUDIO INTERFACE 12/98 www.printcopy.info System Block Diagram WorkCentre 385 7 - 3...

  • Page 138: Engine Configuration

    Scanning Mirror, it creates a line. Synchronization Signal(HSYNC), which is sent to the Engine PBA which transfers image data to LSU and synchronizes the vertical scanning line with the printed page. 12/98 www.printcopy.info Engine Configuration WorkCentre 385 7 - 4...

  • Page 139: Development Processing

    OPC Drum exposed charged to approximately (-)50V by the laser beam while unexposed portions charge to (-)800V. The image formed by the exposed laser beam is invisible, and is called a latent image. 12/98 www.printcopy.info Development Processing WorkCentre 385 7 - 5...

  • Page 140: Transfer

    This signal is transferred to the Engine PBA and indicates paper position. The Actuator and Exit Sensor must report the correct position information, or a Paper Jam error will be indicated. 12/98 www.printcopy.info Development Processing WorkCentre 385 7 - 6...

  • Page 141: Circuit Description

    PPD0-PPD7 EVIDEO /MC_FAULT /READY MC_PERROR MC BUSY /PSYNRQ /MC ACK PARALLEL MC_SELECT INTERFACE /HSYNC (IEEE1284) /PP_INT /CMSG /MC_SELECT /PP_AUTOFD /PP_STROBE FIG. 7-1: ENTIRE STRUCTURE OF MAIN CIRCUIT FOR EACH KEY SIGNAL 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 7...

  • Page 142: Mfp Controller (Ks32C6100: U1)

    - /MCS: MODEM CHIP SELECT (LOW ACTIVE) - /SCS: SRAM CHIP SELECT (LOW ACTIVE) • D0 - D31 - 32bit data bus • A0 - A23 - ADDRESS BUS (A22 - A23 are reserved.) 12/98 www.printcopy.info WorkCentre 385 Circuit Description 7 - 8...
  • Page 143 IRQ control (UARTData) SSRO TxHoldingReg BRDRO (UARTData) RxBufferReg IR Tx IR Rx Encoder Decoder internal Resister FIG. 7-2: UART BLOCK DIAGRAM TXD: START STOP RXD: START STOP FIG. 7-3: UART DATA FORMAT 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 9...
  • Page 144 Following diagram shows one DMA cycle. The external device (SCAN_IP) using the DMA maintains continuously DMA request to be activated until second DMA is performed, so one request brings 2 Word. 12/98 www.printcopy.info WorkCentre 385 Circuit Description 7 - 10...
  • Page 145 It enables data to be printed, bidirectional signal and used to select mode, write uploaded, and downloaded. It also monitors address, read/write data. CLK reads or output data system in rising edge. 12/98 www.printcopy.info WorkCentre 385 Circuit Description 7 - 11...
  • Page 146 Program reads the status register to check that the printer is not BUSY. If not BUSY, then Write to the Control Register to assert the STROBE line. Write to the Control register to de-assert the STROBE line. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 12...
  • Page 147 Host sets nSTROBE high. This is the edge that should be used to clock the data into the Peripheral. Peripheral sets BUSY low to indicate that it is ready for the next byte. The cycle repeats, but this time it is a command cycle because nAUTOFD is low. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 13...
  • Page 148 Peripheral sets nACK high. This is the edge that should be used to clock the data into the host. Host sets nAUTOFD low to indicate that it is ready for the next byte. The cycle repeats, but this time it is a command cycle because BUSY is low. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 14...
  • Page 149 In message reception, the RX bit is cleared when a low-to-high transition occurs on CnEBSY, and at the meantime an interrupt signal INT_BUSY is posted to indicate that one-byte engine message has been received by PIFC. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 15...
  • Page 150 SET TX BIT TO TRANSMIT DATA (TX) AUTO CLEAR Command Message Transfers from KS32C6100 to Printer Engine COMCLK CnEMSG CnEBSY CMOD [1] (RX) READ INT_BUSY Engine Message transfers from Engine to KS32C6100 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 16...
  • Page 151 GPI08/EXTIACK0 RTC_CLK RTC-4513 CLOCK OUTPUT GPI09/EXTIACK1 RTC_DATA RTC-4513 DATA INPUT/OUTPUT GPI010/PPDOE /WR_FLASH FLASH MEMORY WRITE CONTROL SIGNAL OUTPUT GPI011/nCPUPWR GPI012/nENGPWR GPI013/TECLK /EXITP GPI014 /TONER_DET UNUSED GPI015/TIMEOUT0 KEYCLICK KEY CLICK OUTPUT SIGNAL 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 17...
  • Page 152 Test pin. For normal operation, this pin should be connected to GND. TAP controller clock. TAP controller mode select. TAP controller data input. TAP controller data output. TnRST TAP controller reset signal. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 18...
  • Page 153 In external bus master mode, it acts as ExtMnDB[3:0] to indi- cate the byte latch for external master accessing memory. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 19...
  • Page 154 KS32C6100 system bus. ExtMACK Acknowledge for external master holding request. This output signal indicates that the external master holding request has been accepted. ExtMnDL External master data latch signal. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 20...
  • Page 155 Not parallel port acknowledge. The nACK output signal is issued whenever a transfer on the parallel port data bus is completed. BUSY Parallel port busy. The BUSY output signal indicates that the KS32C6100 parallel port is currently busy. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 21...
  • Page 156 COMCLK, is sent to the engine. CnPMSG Not command message. The CnPMSG output is used to send a one-byte command, synchronized with COMCLK, to the printer engine. The command data from the KS32C6100 is sent MSB-first. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 22...
  • Page 157 The printer engine waits until nCPUPSYNC goes active. After a predeter- mined time interval has elapsed, the KS32C6100 must send image data synchronized with nENGHSYNC. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 23...
  • Page 158 GPIO[10]: Parallel data output enable. When PPDOE is PPDOE “1”, the PPDOE parallel port data bus, PPD[7:0], is in output mode. Otherwise it is in input mode. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 24...
  • Page 159 NOTE: The I/O port pin assignments described in this table are presented as only one example. You can modify the port map as necessary in order to meet the requirements of a specific application. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 25...

  • Page 160: Reset Circuit

    Figure 7-8 is block diagram related to the system reset, figure 7-9 is timing diagram. /R_POR U27, U28 Flash Memory AM29F400A /RST_OUT SCAN_IP (U18), MODEM (U15) PRINTER CONTROL LOGIC FIG. 7-8: POWER RESET DIAGRAM 12/98 www.printcopy.info WorkCentre 385 Circuit Description 7 - 26...
  • Page 161 Reset of external device is dissolved in /POR initial booting program. Reset filter (internal) 65 MLCK Internal Reset PnRST 256 MCLK (internal) Reset ROM Access FIG. 7-9: POWER RESET TIMING DIAGRAM 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 27...

  • Page 162: Watch Dog Output (/Rsto)

    Flash memory and DRAM are selected by chip the line. select (/RCSO-1, /FMEM_CS, /RASO-1, /SCS, / CASO-3) lines, and data is accessed by the units position of the word. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 28...
  • Page 163 In receive mode, analog signals from the LIU PBA are amplified and transferred to RXIN:45 through FAX Transmit TXOUT the smoothing filter. MODEM KS16117 FAX Receive RXIN FIG. 7-10: TX AND RX PART 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 29...
  • Page 164 If 8085 bus mode is selected (EN85 is connected to ground), this signal acts as the WRITE input. If 6500 bus mode is selected (EN85 is pulled-up to +5V), this signal acts as the R/W strobe. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 30...
  • Page 165 TXID input pin in serial mode (PDME bit is reset) or in DBFR in parallel mode (PDME bit is set). 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 31...
  • Page 166 This pin must be connected to +5V +/- 5% supply. The +5V Analog power supply voltage ripple should not exceed 100mV GNDD 6, 7, 16, Digital ground 23, 50, These pins must be connected to digital ground. 77, 80, 89, 92, 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 32...
  • Page 167 Transmitter analog output The TXAO can supply a maximum of 2.5 +/- .015 volts into a load resis- tance of 10Kohm (minimum). An external analog smoothing filter with transfer function 28735.63/(S+11547.34) is required. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 33...
  • Page 168 BYPASS Receiver Highpass Filter Bypass Enable. The state of this pin does not have any effect on the operation of the modem, but it should tied to either +5V or ground. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 34...
  • Page 169 Analog-to-digital Data Out. 1-bit input to the internal AFE’s RXPATH. DAIN Digital-to-analog Data In. 1-bit input to the internal AFE’s RXPATH. DAOUT Digital-to-analog Data Out. 1-bit output from the internal digital interpolation filter. 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 35...

  • Page 170: Scan_Ip Block Diagram

    Data Data Data Timing IP Control Data Formatted Data for DMA System Formatted Data Data BUS for DMA IP Control Data Control Host Data Controller Memory FIG. 7-11: SCAN_IP BLOCK DIAGRAM 12/98 www.printcopy.info WorkCentre 385 Circuit Description 7 - 36...
  • Page 171 CML relay on. CML relay off. GOP 6 Reserved GOP 7 Reserved GPIO 0 VOL_C Adjust speaker volume. GPIO 1 VOL_B Adjust speaker volume. GPIO 2 VOL_A Adjust speaker volume. GPIO 3 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 37...
  • Page 172 Table 4: I/O Port of Scan IP Circuit Description Signal Type Name GPIO 4 GPIO 5 GPIO 6 GPIO 7 GPIO 8 GPIO 9 GPIO 10 GPIO 11 GPIO 12 GPIO 13 GPIO 14 GPIO 15 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 38...
  • Page 173 Scan motor driver control signal, TMIB0 output TX_B2 Scan motor driver control signal, TMIB1 output TX_EN1 Scan motor driver control signal, TMPHA output TX_EN2 Scan motor driver control signal, TMPHB output TX_INT Scan motor interrupt output 12/98 www.printcopy.info Circuit Description WorkCentre 385 7 - 39...

  • Page 174: Scanner

    OP-AMP (U16-5, 7), Maximum (+V ) values supply about 3V to voltage divider (R70, R71) through OP-AMP (U16-3, 1). Image signal from CIS supply to U31-96 through CN3-1, U5-5, U5-7, and R75. 12/98 www.printcopy.info WorkCentre 385 Scanner 7 - 40...

  • Page 175: Ope Pba

    Machine status LED drive signals are sent from U1 P0-x pin group. • Document detect sensor output is received at U1 pin 33 (P3-3). • Scan position sensor output is received at U1 pin 43 (P3-1). 12/98 www.printcopy.info OPE PBA WorkCentre 385 7 - 41...

  • Page 176: Liu Pba

    DC current on telephone line and puts out pulse signal on telephone line. • U3-35 CS terminals: It makes Make Resis- tance by shorting telephone line with Vss dur- ing Make period of DP dial. 12/98 www.printcopy.info LIU PBA WorkCentre 385 7 - 42...

  • Page 177: Line Current Detector

    - Insulation Between primary and secondary U3(STI9510) to receive control signal or circuit part. dialing information from MFP controller of the main PBA (U15). - Insulation Between primary and secondary circuit part. 12/98 www.printcopy.info WorkCentre 385 LIU PBA 7 - 43...

  • Page 178: Smps (Switching Mode Power Supply)

    Q251 of the secondary stage 24V is the Low Power-loss Regulator with built-in overcurrent protection function and overheat protection function, and consists a control IC and a 12/98 www.printcopy.info SMPS (Switching Mode Power Supply) WorkCentre 385 7 - 44...

  • Page 179: Engine Controller

    The NVRAM(U1) stores “Used Sheet Count” for SET and Developer unit. To control it, it is selected by “CS”, and “DI”/”DO” synchronizes with “SK” clock writes in/reads out the serial data to/from the NVRAM. 12/98 www.printcopy.info WorkCentre 385 Engine Controller 7 - 45...

  • Page 180: Paper Sensing(+5V)

    When the scanned laser beam reaches at the side of LSU, “HSYNC” outputs one pulse. Video controller synchronizes this signal, and outputs the left edge of image. 12/98 www.printcopy.info Engine Controller WorkCentre 385 7 - 46...

  • Page 181: High Voltage Power Supply)

    “SUPPLY-EA” or “DEV-EA” input goes to “Low”, SUPPLY or DEV terminal corresponding it outputs the voltage that is generated by dropping MHV. DEV output voltage is selectable 300V or 350V. 12/98 www.printcopy.info H.V.P.S (High Voltage Power Supply) WorkCentre 385 7 - 47...
  • Page 182 12/98 www.printcopy.info WorkCentre 385 7 - 48...

  • Page 183: Www.printcopy.info

    Publication Number/Date/Title (Change if required) Machine Firmware/S.W. Level 701P14250 December 1998 Xerox WorkCentre 385 Page No. - Figure Number and description of Error or Deficiency (Please be specific. Type or print the comments). Please check if answer is requested. If yes, be sure to fill in Name, Job Title or Employee Number, and the Mailing Address...
  • Page 184 Before taping please be sure that all information is completed on reverse side. FOLD FOLD PLACE REQUIRED POSTAGE HERE XEROX CORPORATION Attn: Manager Customer and Service Documentation 300 Main Street, Suite 20A East Rochester, New York 14445 FOLD FOLD Before taping please be sure that all information is completed on reverse side.

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