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Xerox 450c Service Manual

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Transmittal Page
Title
Part Number
Product
Document WorkCentre
Service Manual
701P14820
450c/450cp
Status
Date
February 1999
Initial Issue
Distributed February 05, 1999
www.printcopy.info

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Summary of Contents for Xerox 450c

  • Page 1 Transmittal Page Title Part Number Product Document WorkCentre Service Manual 701P14820 450c/450cp Status Date February 1999 Initial Issue Distributed February 05, 1999 www.printcopy.info...
  • Page 2 www.printcopy.info...
  • Page 3 Binder Inserts - Cut on the dotted lines Document WorkCentre 450c/450cp Service Manual Document WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 4 www.printcopy.info...

  • Page 5: Service Manual

    XEROX Document WorkCentre 450c/450cp Service Manual Certain components this product susceptible damage from electrostatic discharge. Observe all ESD procedures to avoid 701P14820 component damage. February 1999 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 Document WorkCentre 450c/450cp Service Manual 701P14820 Page Revision Page Revision Page Revision Page Revision Page Revision Page Revision Title 2-17 4-47 6-23 7-16 2-18 4-10 4-48 6-24 2-19 4-11 6-25 2-20 4-12 6-26...
  • Page 8 Page Revision 02/99 www.printcopy.info Revision Control List Document WorkCenter 450c/450cp...

  • Page 9: Table Of Contents

    7. Wiring Data - - - - - - - - - - - - - - - 7-1 Section Contents- - - - - - - - - - - - - - - - - - 7-1 02/99 www.printcopy.info Document WorkCenter 450c/450cp Table of Contents...

  • Page 10: Introduction

    This section contains general procedures, section of the manual. product specifications, supplemental tools After the repair is complete, verify the repair with The Xerox Document WorkCentre 450c/450cp and supplies, Tag/MOD information, and the System Check. Service Manual is the primary document used for installation instructions.

  • Page 11: Manual Revision Symbols

    Example 1). - - - - - - - - - - -Tag/MOD 1: PWB . . . Example 2)- - - - - - - - - - - PWB (Tag/MOD 1) . . . 02/99 www.printcopy.info Document WorkCenter 450c/450cp Introduction...
  • Page 12 This page intentionally left blank 02/99 www.printcopy.info Introduction Document WorkCenter 450c/450cp viii...

  • Page 13: Service Call Procedures

    Electro Static Discharge ....1-1 These procedures direct you to other sections when diagnosing and repairing the Xerox Initial Actions ........1-3 WorkCentre 450c/450cp. You should always return to this section to continue with the System Check ........1-4 Service Call Procedure.
  • Page 14 This page intentionally left blank Page 1-2 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 15 Go to Messages RAP 1.1 on the LCD screen: Power-on Check Perform System Printer Test on the following page, or if you have a known symptom, go to the appropriate system check in this chapter. Xerox WorkCentre 450c/450cp Service Manual Page 1-3 www.printcopy.info...
  • Page 16 System Check: Printer Test The initial actions you performed on the previous page performed a quick initial Make a WorkCentre 450c/450cp test print. Press MENU, 6, ENTER, 5, ENTER. check of the power system, circuit boards, control panel, paper feed, and the printer engine.
  • Page 17 System Check: Copier Test Continue the Initial Actions flowchart on this page to check the scanner assembly, LCU, and fax capabilities. Make a copy. Insert the Xerox Test Scanner motor does not Print (p/n 82P151) into the document activate or document feeds feeder.
  • Page 18 If any other message displays, go to the Messages RAP 1.1. Copy Completed Go to Image Quality RAPs. Image quality is acceptable? Perform System Check Send Fax Test on the following page. Page 1-6 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 19 If no message appears on the message displays on the LCD: LCD, go to LCD RAP 7.2. If any other message displays, Preparing to send to go to the Messages RAP 1.1. xxxxxxx Continued on following page Xerox WorkCentre 450c/450cp Service Manual Page 1-7 www.printcopy.info...
  • Page 20 Messages RAP 1.1. 10:45 am 100: free Go to Analog Communications The fax was received by the RAP 6.1 remote machine. Perform System Check Receive Fax Test on the following page. Page 1-8 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 21 If no message appears on the LCD: LCD, go to LCD RAP 7.2. If any other message displays, Receiving go to the Messages RAP 1.1. Press START. The following xxx-xxxx xx% free Continued on following page Xerox WorkCentre 450c/450cp Service Manual Page 1-9 www.printcopy.info...
  • Page 22 LCD, go to LCD RAP 7.2. If any other message displays, Receiving go to the Messages RAP 1.1. Press START. The following Completed Go to Image Quality RAPs. Image quality is acceptable? Go to Final Actions Page 1-10 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 23: Scanner Parts

    Clean the guide rod using Xerox film remover 43P45 and a lint free cloth 35P2163. Next, use a lint free cloth 35P2163 to apply a thin film of grease 70H44 to the rail. Xerox WorkCentre 450c/450cp Service Manual Page 1-11 www.printcopy.info...
  • Page 24 MENU, 5, ENTER, 9, ENTER ENTER, START The counter is now reset to 100%. Clean the machine’s exterior Clean the exterior of the 450c/450cp using a lint free cloth and water. Restore the customer’s settings Use the menu you printed before initial actions to restore the user’s settings.

  • Page 25: Section Contents

    Certain components in this product are susceptible to damage from electrostatic RAP 6.1: Analog Communications .... 2-33 discharge. Observe all ESD procedures to avoid component damage. RAP 6.2: PC Connectivity ......2-34 RAP 7.1: Control Panel Keyboard ..... 2-35 Xerox WorkCentre 450c/450cp Service Manual Page 2-1 www.printcopy.info...

  • Page 26: Rap 1.1: Lcd Panel Messages

    This RAP consists of a listing of messages and other symptoms that direct you to a RAP to further isolate the problem. This section does not list all possible messages or error codes that appear. Most messages are self explanatory. Page 2-2 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 27 WorkCentre 450c/450cp LCD Panel Messages Message Meaning Operator Action Technician Action Cam error The WorkCentre encountered an None Go to RAP 3.6: Cam Sensor on page 2-22 error while reading the cam sensor. Cartridge error The WorkCentre encountered an Check the printed pages for image quality or Go to RAP 4.2: Encoder on page 2-27.
  • Page 28 WorkCentre 450c/450cp LCD Panel Messages (Continued) Message Meaning Operator Action Technician Action Cyan low. START if OK, The ink supply in the cyan ink Check the printed pages. If the print quality is Go to RAP 4.3: Ink Level Sensor on page 2-28 or CARTRIDGE.
  • Page 29 WorkCentre 450c/450cp LCD Panel Messages (Continued) Message Meaning Operator Action Technician Action No cyan ink. Load Either the cyan ink cartridge is Insert a Xerox color ink cartridge. Go to RAP 4.3: Ink Level Sensor on page 2-28 cartridge. missing or an ink cartridge made for another machine is installed in the WorkCentre.
  • Page 30 WorkCentre 450c/450cp LCD Panel Messages (Continued) Message Meaning Operator Action Technician Action Printer unavailable. The WorkCentre cannot print the Do one or more of the following: Go to RAP 3.1: Paper Feed on page 2-16 documents stored to memory, or 1.

  • Page 31: Rap 1.2: Error Codes

    RAP 1.2: Error Codes Table 2-1 WorkCentre 450c/450cp Error Codes Code Meaning Action This section lists the error codes you may E001 Communication ended without errors. No action. see the WorkCentre LCD and in printed E003 The remote machine sent a disconnect signal Retry the operation.
  • Page 32 Table 2-1 WorkCentre 450c/450cp Error Codes (Continued) Code Meaning Action E014 While transmitting, the WorkCentre received a Check the remote machine and the Memory Full or Out of Paper signal. The page telephone line. Reduce the transmission was not completely received, or a page was speed and try again.
  • Page 33 Table 2-1 WorkCentre 450c/450cp Error Codes (Continued) Code Meaning Action E027 The telephone line dropped while the Call the remote machine with a handset WorkCentre was receiving a fax from the remote to verify the phone line is good. Then machine.
  • Page 34 Table 2-1 WorkCentre 450c/450cp Error Codes (Continued) Code Meaning Action E048 The WorkCentre stopped receiving the fax Increase memory by deleting or printing because its memory is full. the documents stored to memory. Set the Receive option To print. Retry the operation.

  • Page 35: Rap 2.1: Ac/Dc Power Check

    This concludes the AC/DC power check RAP. Perform the Figure 2-1 AC Voltage Check System Check again, or return to the RAP that sent you here. Voltage at the wall receptacle is 180 VAC to 264 VAC between live Xerox WorkCentre 450c/450cp Service Manual Page 2-11 www.printcopy.info...

  • Page 36: Rap 2.2: Power Supply Dc Voltage Check

    2. Using a multimeter, place the Common lead on the GND test point, and the Positive lead on the +5 VDC test point. See Figure 2-3 for test point locations. Make a note of the voltage reading. Page 2-12 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 37 Power Supply DC Voltage Check on page 2-14. Yes: Power supply is good. This concludes the Power Supply DC Voltage Check RAP. Perform the System Check again, or return to the RAP that sent you here. Xerox WorkCentre 450c/450cp Service Manual Page 2-13 www.printcopy.info...

  • Page 38: Rap 2.3: Unloaded Power Supply Dc Voltage Check

    Use caution when To isolate this problem, go to working in this area with the RAP 2.4: Power Supply Loading on page 2-15. multimeter probes. Page 2-14 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 39: Rap 2.4: Power Supply Loading

    This RAP will 4. Perform the voltage checks given in isolate the problem to a known RAP 2.2: Power Supply DC Voltage Check on page 2-12. subsystem on the WorkCentre 450c/ 450cp. Result: Power supply readings are within specification? 1.

  • Page 40: Rap 3.1: Paper Feed

    Result: Harness and connections appear good? appear good? No: Reconnect the wire harness, or replace as required. No: Reconnect the cable, or replace as Yes: Continue with Step 4. required. Yes: Continue with Step 2. Page 2-16 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 41 7. Replace the paper feed motor (REP 2.1.5: Paper Feed Motor on page 4-8). If this does not solve the problem, replace the main circuit board (REP 5.1.2: Main Board on page 4-39). Xerox WorkCentre 450c/450cp Service Manual Page 2-17 www.printcopy.info...

  • Page 42: Rap 3.2: Media Misfeed In Printer

    • the proper media being used is designed for use with the WorkCentre 450c/450cp • the paper tray is properly installed and the latches are not broken. If a latch needs replacement, go to REP 2.1.20: Printer Cassette Latch on page 4-26 •...

  • Page 43: Rap 3.3: Paper Eject From Printer

    See REP 2.1.2: Eject Roller Assembly on page 4-5. if this still does not correct the problem, replace the printer. See REP 2.1.18: Printer Assembly on page 4-24. Xerox WorkCentre 450c/450cp Service Manual Page 2-19 www.printcopy.info...

  • Page 44: Rap 3.4: Paper Misfeed In Adf

    ADF pad assembly. See REP 3.1.2: ADF Pad on page 4-28. If this does not correct the problem, replace the scanner assembly. See REP 4.1.1: Scanner Assembly on page 4-31. Page 2-20 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 45: Rap 3.5: Paper Path Sensor

    No: Replace the paper path sensor assembly (REP 2.1.3: Paper Path Sensor on page 4-6). Yes: Go to step 3. 3. Check the connection at J3 on the printer interface PWB. Xerox WorkCentre 450c/450cp Service Manual Page 2-21 www.printcopy.info...

  • Page 46: Rap 3.6: Cam Sensor

    If that does not solve the problem, replace the main Result: Cable and connections circuit board (REP 5.1.2: Main Board on page 4-39. appear good? No: Reconnect the cable, or replace as required. Yes: Continue with Step 2. Page 2-22 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 47: Rap 3.7: Paper Out Sensor

    2. Add paper to the paper cassette. printer interface PWB to the paper out sensor contact Result: The out of paper message points. See Figure 2-11. goes away. No: Go to Step 3. Yes: End of RAP. Xerox WorkCentre 450c/450cp Service Manual Page 2-23 www.printcopy.info...
  • Page 48 Wiring harness to the paper out sensor contact points Figure 2-11 Printer Interface PWB Result: Harness and connections appear good? No: Reconnect the wire harness, or replace as required. Yes: Replace the harness. Page 2-24 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 49: Rap 4.1: Carriage Motor

    No: Reconnect the cable, or replace as wiring harness required. Result: Harness and connections appear good? Yes: Continue with Step 2. No: Reconnect the wire harness, or replace as required. Yes: Continue with Step 4. Xerox WorkCentre 450c/450cp Service Manual Page 2-25 www.printcopy.info...
  • Page 50 Yes: Continue with Step 6. 5. Replace the carriage motor (REP 2.1.15: Carriage Motor on page 4-20). If this does not solve the problem, replace the main board (REP 5.1.2: Main Board on page 4- 39). Page 2-26 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 51: Rap 4.2: Encoder

    No: Replace the encoder (REP 2.1.12: Encoder on page 4-15). If this does not solve the problem, replace the main circuit board (REP 5.1.2: Main Board on page 4-39). Yes: End of Encoder RAP. Xerox WorkCentre 450c/450cp Service Manual Page 2-27 www.printcopy.info...

  • Page 52: Rap 4.3: Ink Level Sensor

    PWB to the ink level sensor. Result: The wire harness and connections are good? No: Reconnect the wire harness, or replace as required. Yes: Continue with Step 4. Page 2-28 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 53: Rap 4.4: Pump

    (REP 2.1.10: Pump on page 4-13). Yes: The pump is working, end of RAP. Figure 2-17 Pump 3. Make sure the hoses are not pinched or damaged. 4. Power on the machine. Xerox WorkCentre 450c/450cp Service Manual Page 2-29 www.printcopy.info...

  • Page 54: Rap 5.1: Doc And Read Point Sensor

    Yes: Continue with Step 3. Yes: Continue with Step 7. 3. Check the doc and read point sensors for binding or jamming (see Figure 2-20). 7. Press down on the read point switch. Page 2-30 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 55 “Scan Position sensor” (H)IGH? No: Replace the doc and read point sensor assembly (REP 4.1.5: Doc and Read Point Sensor Assembly on page 4-35). Yes: Go to RAP 5.2: Scanner Motor on page 2-32. Xerox WorkCentre 450c/450cp Service Manual Page 2-31 www.printcopy.info...

  • Page 56: Rap 5.2: Scanner Motor

    Yes: Continue with Step 2. 2. Power on the unit. Check the voltage across main board connector CN5 pin 1 and GND. Result: Voltage is between 40.3 VDC and 41.3 VDC?? Page 2-32 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 57: Rap 6.1: Analog Communications

    Result: Connections secure? the main circuit board (REP 5.1.2: Main Board on page 4-39). No: Reconnect wire harness as required. Yes: End of RAP. Yes: Continue with Step 3. 3. Enter Service Mode. Xerox WorkCentre 450c/450cp Service Manual Page 2-33 www.printcopy.info...

  • Page 58: Rap 6.2: Pc Connectivity

    3. At the customer’s PC, exit Windows to DOS. 4. At the customer’s DOS system prompt, type the following: copy con lpt1: <return> Testing 1234 <return> <Ctrl-Z> Result:Text “Testing 1234” prints on the WorkCentre? Page 2-34 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 59: Rap 7.1: Control Panel Keyboard

    J4. Pin 1 - Connector J4 Result: Voltage is between 4.75 VDC and 5.25 VDC? No: Perform RAP 2.2: Power Supply DC Voltage Check on page 2-12. Yes: Continue with Step 3. Xerox WorkCentre 450c/450cp Service Manual Page 2-35 www.printcopy.info...

  • Page 60: Rap 7.2: Control Panel Lcd Panel

    J4. Pin 1 - Connector J4 Result: Voltage is between 4.75 VDC and 5.25 VDC? No: Perform RAP 2.2: Power Supply DC Voltage Check on page 2-12. Yes: Continue with Step 3. Page 2-36 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 61: Rap 7.3: Control Panel Led Rap

    J4. Pin 1 - Connector J4 Result: Voltage is between 4.75 VDC and 5.25 VDC? No: Perform RAP 2.2: Power Supply DC Voltage Check on page 2-12. Yes: Continue with Step 3. Xerox WorkCentre 450c/450cp Service Manual Page 2-37 www.printcopy.info...

  • Page 62: Rap 8.0: Ni-Metal Battery

    No: Replace the battery (REP 5.1.3: Ni-Metal Battery on page 4-40). If this does not solve the problem, replace the main circuit board (REP 5.1.2: Main Board on page 4-39). Yes: End of RAP. Page 2-38 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 63: Rap 9.0: Ram Test

    2. Power on the machine. 3. In the Service Menu, perform the RAM test. Result:Test passed? No: Replace the main circuit board (REP 5.1.2: Main Board on page 4-39). Yes: End of RAP. Xerox WorkCentre 450c/450cp Service Manual Page 2-39 www.printcopy.info...
  • Page 64 This page intentionally left blank Page 2-40 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 65: Image Quality Repair Analysis Procedures

    The Image Quality section is used to identify image quality problems. IQRAP 1: Blank Print RAP ....3-2 IQRAP 2: Black Print After Scanning 3-3 IQRAP 3: Image Defect RAP .... 3-4 Xerox WorkCentre 450c/450cp Service Manual Page 3-1 www.printcopy.info...
  • Page 66 4. Replace the print head. 5. Check the ribbon cable from the main board connector CN4 to the print head. Replace or reconnect as required. Figure 3-2 Print head terminals CN10 Figure 3-1 Connector CN4 Page 3-2 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 67 J3. Result: Voltage is between 4.75 Figure 3-3 Scanner Relay Board VDC and 5.25 VDC? No: Perform RAP 2.2: Power Supply DC Voltage Check on page 2-12 Yes: Continue with Step 4. Xerox WorkCentre 450c/450cp Service Manual Page 3-3 www.printcopy.info...
  • Page 68 (a line of type prints over toggle gear is preventing does not solve the problem, perform the part of the preceding the media from advancing complete paper feed RAP (RAP 3.1). line) properly Page 3-4 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 69: Repair/Adjustment

    REP 2.1.19: Toggle Gear ....4-25 ADJ 2.3: Belt tension adjustment ...... 4-47 REP 2.1.20: Printer Cassette Latch ..4-26 ADJ 2.4 Cam Alignment Procedure ....4-48 REP 3.1.1: Control Panel ....4-27 Xerox WorkCentre 450c/450cp Service Manual Page 4-1 www.printcopy.info...
  • Page 70 Illustrations and photographs are used to assist you with the procedures. You should refer to the specific parts list illustration (listed under the repair title) for locating most components within a procedure. Page 4-2 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 71: Rep 1.1: Workcentre Cover

    7. Remove the machine cover. However, make sure the vacuum tubes at the Locate the two slots underneath the pump are not stretched or pinched during machine at the front. machine cover installation. Xerox WorkCentre 450c/450cp Service Manual Page 4-3 www.printcopy.info...

  • Page 72: Rep 2.1.1: Exit Guide

    3. Rotate the guide approximately 90° up and toward the rear of the printer. 4. Lift the exit guide from the printer. Page 4-4 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 73: Rep 2.1.2: Eject Roller Assembly

    (by the red dot on the cam tab and rotate until the tab points down. Eject roller Rotate cam Figure 4-1 Eject roller assembly 4. Lift the roller out of the roller guide. Xerox WorkCentre 450c/450cp Service Manual Page 4-5 www.printcopy.info...

  • Page 74: Rep 2.1.3: Paper Path Sensor

    J3 on the printer interface PWB. See Figure 4-2. paper path sensor Figure 4-2 Paper path sensor 3. Remove the paper path sensor mounting bracket screw. 4. Remove the paper path sensor and mounting bracket. Page 4-6 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 75: Rep 2.1.4: Cam Sensor

    2. Disconnect the cam sensor at connector J7 on the printer interface PWB. 3. Remove the cam sensor by pulling it out of its mounting slot (Figure 4-3). Cam sensor Figure 4-3 Cam sensor Xerox WorkCentre 450c/450cp Service Manual Page 4-7 www.printcopy.info...

  • Page 76: Rep 2.1.5: Paper Feed Motor

    Paper feed motor wiring harness Figure 4-4 Paper feed motor wiring harness 3. Remove the mounting screws indicated in Figure 4-5. Page 4-8 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 77: Rep 2.1.6: Paper Out Sensor

    See Figure 4-8. Figure 4-6 Releasing the paper cassette bracket Disconnect 3. Remove the switch from the slot in the paper harness cassette. Figure 4-8 Paper out switch wiring harness connections Xerox WorkCentre 450c/450cp Service Manual Page 4-9 www.printcopy.info...

  • Page 78: Rep 2.1.7: Retard Pad

    3. Position the retaining bracket as shown below in Figure 4-11, and tighten with the mounting screw. Figure 4-9 Retard pad and bracket 3. Remove the bracket and spring. 4. Remove the retard pad. Figure 4-11 Retard pad mounting bracket reinstallation Page 4-10 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 79: Rep 2.1.8: Maintenance Station

    6. Connect the ink waste tube to the nozzle. NOTE: Ensure tube is routed between the pinch arm and the maintenance station body. Figure 4-12 Maintenance station mounting screw Xerox WorkCentre 450c/450cp Service Manual Page 4-11 www.printcopy.info...

  • Page 80: Rep 2.1.9: Wiper Rep

    REP 2.1.9: Wiper REP Parts List: 2.1 Note: Later models of the WorkCentre 450c/450cp may only have one wiper. 1. Perform the following: REP 1.1: WorkCentre Cover on page 4-3 2. Move the printhead carriage to the middle of the printer.

  • Page 81: Rep 2.1.10: Pump

    In from cartridge Out to ink waste pad Remove mounting bracket screws Figure 4-14 Pump 3. Remove the two screws that hold the pump and pump bracket in place, and remove the pump/bracket assembly. Xerox WorkCentre 450c/450cp Service Manual Page 4-13 www.printcopy.info...

  • Page 82: Rep 2.1.11: Ink Level Sensor

    Figure 4-16 Ink level sensor Figure 4-15 Ink level sensor wiring harness 4. Remove the screw that attaches the ink level sensor to the printer, and remove the sensor (Figure 4-16) Page 4-14 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 83: Rep 2.1.12: Encoder

    Figure 4-17 Encoder wiring harness NOTE: Expect moderate to heavy resistance when NOTE: Observe encoder harness routing before removing bushings from printer side frames. removing encoder. 5. Remove the encoder plate mounting screws Xerox WorkCentre 450c/450cp Service Manual Page 4-15 www.printcopy.info...
  • Page 84 4. Reconnect encoder harness (J4) to Relay PWB. Secure harness to carriage tabs. 5. Reinstall maintenance station; reinstall the machine screw. 6. Reconnect maintenance station tube. 7. Ensure tube is properly located behind the pinch arm. Page 4-16 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 85: Rep 2.1.13: Carrier Assembly

    The printed side of the ribbon cable should be facing upward. 9. Remove the carrier from the shaft. 5. Reinstall the carrier shaft into the carriage. 10. Unhook the cable from the cable edge restraints (Figure 4-19). Xerox WorkCentre 450c/450cp Service Manual Page 4-17 www.printcopy.info...
  • Page 86 Figure 4-20 Attaching timing belt to carrier 8. Reattach the carrier and shaft assembly to the printer.Position the bushings as shown in Figure 4-21. Pointer Index marks Figure 4-21 Bushing position Page 4-18 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 87: Rep 2.1.14: Cartridge Lock Lever

    4. Place the lever cam in the new lever as shown in Figure 4-24. Figure 4-22 Carriage lever removal Figure 4-24 Lever and cam assembly 5. Squeeze the carrier together and insert the lever and cam into the carrier (Figure 4-23). Xerox WorkCentre 450c/450cp Service Manual Page 4-19 www.printcopy.info...

  • Page 88: Rep 2.1.15: Carriage Motor

    If you allow the cam to rotate, the assembly will not be NOTE: Expect moderate to heavy resistance installed correctly. when removing bushings from printer Figure 4-27 Ground plate mounting screw side frames. Page 4-20 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 89 (Figure 4-28). Remove screws Figure 4-28 Carriage motor mounting screws 10. Remove the carriage motor, carefully guiding the carriage motor wire harness away from the printer. Xerox WorkCentre 450c/450cp Service Manual Page 4-21 www.printcopy.info...

  • Page 90: Rep 2.1.16: Printer Cover Open Switch

    J3 on the printer interface PWB). Mounting screw Figure 4-29 Printer cover open switch Printer cover open wiring harness 3. Remove mounting screw. 4. Remove the printer cover open switch mounting screw and remove the switch. Page 4-22 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 91: Rep 2.1.17: Printer Interface Pwb

    2. Disconnect all the cables attached to the printer interface PWB (Figure 4-30). 3. Pull out gently on the board to release it from the plastic snaps. Printer interface PWB Figure 4-30 Printer interface PWB Xerox WorkCentre 450c/450cp Service Manual Page 4-23 www.printcopy.info...

  • Page 92: Rep 2.1.18: Printer Assembly

    5. Reattach the ground wires on either side of the printer. 4. Remove the two self-tapping screws that secure the printer to the chassis. Page 4-24 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 93: Rep 2.1.19: Toggle Gear

    4. Remove the large 100:35 gear shown in Figure 4-33. Toggle gear Large 100:35 gear Figure 4-33 Printer gears 5. Remove the toggle gear assembly. 6. Remove the toggle gear and inspect for damage. Xerox WorkCentre 450c/450cp Service Manual Page 4-25 www.printcopy.info...

  • Page 94: Rep 2.1.20: Printer Cassette Latch

    1. Remove the WorkCentre's paper cassette. 2. Remove the screw that secures the latch to the printer. 3. Remove the latch and replace as shown in Figure 4-34. Figure 4-34 Printer cassette latch Page 4-26 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 95: Rep 3.1.1: Control Panel

    4. Disconnect the wire harness from connector J3 (labeled OPE) on the scanner relay board. 5. Tilt the Control Panel forward until it is vertical, then lift out of the slots. Xerox WorkCentre 450c/450cp Service Manual Page 4-27 www.printcopy.info...

  • Page 96: Xerox Workcentre 450C/450Cp Service Manual

    NOTE: Be sure to reset the ADF pad counter as two sides of the plastic housing that holds the described in Final Actions. pad and remove the housing with the pad (Figure 4-36. Page 4-28 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 97: Rep 3.1.3: Lcd Display

    (Figure 4-37). 4. Remove the 2 screws that secure the LCD display to the control panel. 5. Carefully remove the LCD display. LCD wiring harness LCD display Figure 4-37 LCD display Xerox WorkCentre 450c/450cp Service Manual Page 4-29 www.printcopy.info...

  • Page 98: Rep 3.1.4: Control Panel Circuit Board

    4. Remove the 13 screws that secure the control panel circuit board to the control panel. 5. Carefully remove the circuit board. Control panel circuit board LCD wiring harness Figure 4-38 Control panel circuit board Page 4-30 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 99: Rep 4.1.1: Scanner Assembly

    These screws are accessible through holes at the top of the scanner. See Figure 4-39. Remove screws Figure 4-39 Removing the scanner assembly 5. Lift the scanner unit away from the chassis. Xerox WorkCentre 450c/450cp Service Manual Page 4-31 www.printcopy.info...

  • Page 100: Rep 4.1.2: Scanner Rollers And Bushings

    Figure 4-41 ADF one-way bushing retaining circlip 3. Remove the old bushing, and slide the new bushing into place. 4. Reinstall the circlip. ADF separator 1-way bushing Figure 4-40 Scanner roller bushings Page 4-32 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 101: Rep 4.1.3: Cis Sensor Assembly

    5. Lift the CIS sensor out of it’s slot. 6. Place the new CIS sensor in the slot, and route the wiring harness as shown in Figure 4-42. assembly CIS wiring harness Figure 4-42 CIS wiring harness and assembly Xerox WorkCentre 450c/450cp Service Manual Page 4-33 www.printcopy.info...

  • Page 102: Rep 4.1.4: Scanner Relay Board

    REP 1.1: WorkCentre Cover on page 4-3 2. Disconnect all wiring harnesses connected to the scanner relay board. 3. Remove the screw that attaches the scanner relay board to the scanner chassis. Figure 4-43 Scanner relay board Page 4-34 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 103: Rep 4.1.5: Doc And Read Point Sensor Assembly

    4. Remove the screw that attaches the doc and read point sensor assembly to the scanner chassis. See Figure 4-44. Doc and read point sensor assembly Figure 4-44 Doc and read point sensor assembly Xerox WorkCentre 450c/450cp Service Manual Page 4-35 www.printcopy.info...

  • Page 104: Rep 4.1.6: Scanner Cover Open Switch

    J1 on the scanner relay board. Scanner cover open switch Scanner relay board Figure 4-45 Scanner cover open switch 4. Push up on the bottom of the switch to remove it from the slot. Page 4-36 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 105: Rep 4.1.7: Scanner Motor And Gear Assembly

    To remove the scanner motor only, remove these screws Figure 4-46 Scanner motor 4. To remove the scanner motor and gear assembly, remove the two screws that secure this assembly to the scanner chassis (Figure 4-46) Xerox WorkCentre 450c/450cp Service Manual Page 4-37 www.printcopy.info...

  • Page 106: Rep 5.1.1: Power Supply

    REP 3.1.1: Control Panel on page 4-27 d. REP 4.1.1: Scanner Assembly on page 4-31 2. Disconnect the AC wire harness from the power supply. (Figure 4-47) AC wiring harness Figure 4-47 AC wiring harness Page 4-38 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 107: Rep 5.1.2: Main Board

    REP 5.1.1: Power Supply on page 4-38 2. Remove the 8 screws that secure the main board to the chassis. 3. Tilt up slightly and disconnect main board connector CN8 from analog board connector J1. Xerox WorkCentre 450c/450cp Service Manual Page 4-39 www.printcopy.info...

  • Page 108: Rep 5.1.3: Ni-Metal Battery

    5. Solder the new battery into place, making sure that the positive end of the battery is pointing towards the printer. Use as little heat as possible in resoldering the new battery into place. Page 4-40 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 109: Rep 5.1.4: Analog Board

    All others: unplug the LCU from the analog board. 4. Remove the 4 screws that secure the analog board to the chassis. 5. Tilt up slightly, and disconnect analog board connector J1 from main board connector CN8. Xerox WorkCentre 450c/450cp Service Manual Page 4-41 www.printcopy.info...

  • Page 110: Rep 5.1.5: Lcu

    2. For USO/XCL/AO/FX: Disconnect the LCU wire harness at connector J1 on the LCU. Disconnect wiring harness on LCU 3. For XL: Use a flat-blade screw driver and gently pry the LCU out of the slot. Page 4-42 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 111: Rep 5.1.6: Waste Ink Pads

    AC receptacle; the others on the main circuit board. See Figure 4-48. Remove these 2 screws also Figure 4-48 Waste ink pad cover 3. Remove the insulator plate, and replace the 3 ink absorbent pads. Xerox WorkCentre 450c/450cp Service Manual Page 4-43 www.printcopy.info...

  • Page 112: Rep 5.1.7: Speaker Assembly

    3. Use your thumb to push out the speaker retaining clips until you can remove the speaker from the slot (Figure 4-49). Speaker retaining tab Figure 4-49 Speaker assembly 4. Remove the speaker cushion. Page 4-44 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 113: Adj 2.1: Printhead Alignment

    Choose the best alignment pattern. 5. Use the LEFT or RIGHT keys to display the index number of the best vertical alignment pattern. 6. Press ENTER. Figure 4-50 Vertical alignment test pattern Xerox WorkCentre 450c/450cp Service Manual Page 4-45 www.printcopy.info...

  • Page 114: Adj 2.2: Printhead Gap Adjustment

    11. If the gap needs adjustment, rotate the carriage drive bushing on either side of the carriage shaft to move the head closer or farther from the rib. 12. Repeat steps 3 and 4 until the head gap is within tolerances. Page 4-46 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 115: Adj 2.3: Belt Tension Adjustment

    3. Manually slide the carriage to the far right, back to the far left, then back to the far right. 4. Tighten the encoder mounting screw. The belt tension is now set. Xerox WorkCentre 450c/450cp Service Manual Page 4-47 www.printcopy.info...

  • Page 116: Adj 2.4 Cam Alignment Procedure

    10. Reinstall the toggle gear, 100/35 tooth gear and paper feed motor/pump assembly. 11. Reinstall top covers, access cover and paper Upper gear alignment hole cassette. Figure 4-54 Upper Drive Gear Alignment Page 4-48 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 117: Section Contents

    PL 2.3 Printer assembly ....5-5 PL 3.1 Machine base ......5-6 PL 4.1 Control Panel ......5-7 PL 5.1 Miscellaneous Parts ....5-8 PL 6.1 Spare parts not illustrated ..5-9 Spare Parts Index ......5-11 Xerox WorkCentre 450c/450cp Service Manual Page 5-1 www.printcopy.info...

  • Page 118: Pl 1.1 Scanner Assembly

    110K09060 OP cover open switch assembly 062K08401 450c/450cp Scanner assembly, lower (USO, XCL, XL, AO) 062K49400 450cp Scanner assembly, lower (FX) 062K09170 450c Scanner assembly, lower (FX) 016E12380 ADF 1-way bushing 016E12370 Scanner bushing 007K09460 Gear train assembly Page 5-2 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 119: Pl 2.1 Printer Assembly

    127K22240 Pump 130K56600 Ink low sensor assembly 146K00491 Encoder — Tensioner 015E59830 Blotter 033E03512 Wiper (1 or 2) 019E35221 Cam pin shown 600K57360 Cam pin kit of 50 shown 041K05311 Encoder/tensioner assembly Xerox WorkCentre 450c/450cp Service Manual Page 5-3 www.printcopy.info...

  • Page 120: Pl 2.2 Printer Assembly

    Cam sensor PWB 110K09050 Cover open switch assembly 130K56490 Paper path sensor 007E52860 100-35 gear 046K00291 Printer assembly, no paper cassette (USO, XCL, XL, AO) 046K00340 Printer assembly, no paper cassette (FX) Page 5-4 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 121: Pl 2.3 Printer Assembly

    PL 2.3 Printer assembly Item Part Number Description 038K11210 Exit guide assembly 022K53800 Eject roller assembly Xerox WorkCentre 450c/450cp Service Manual Page 5-5 www.printcopy.info...

  • Page 122: Pl 3.1 Machine Base

    Fuse, 250V, 15A 1 (top) 2 (bottom) Note: The drawing shows the USA configuration. The wiring harness (item A) is not used in XL configurations. The photograph to the left shows the XL configuration. Page 5-6 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 123: Pl 4.1 Control Panel

    LCD assembly, FX 162K29130 CIS to relay harness assembly 162K29150 Relay to main harness assembly 160K32271 Scanner relay PWB 160K32283 Control panel PWB V1.9 032K02721 Guide assembly, scanner 3 (rear view) upper Xerox WorkCentre 450c/450cp Service Manual Page 5-7 www.printcopy.info...

  • Page 124: Pl 5.1 Miscellaneous Parts

    891E37170 Spanish 891E42070 Italian 891E42080 German 891E43980 Japanese 450cp Overlay label: 891E80820 English 891E80830 French 891E80840 Italian 891E80850 German 891E80860 Spanish 891E80870 Portuguese 891E81680 Japanese 050K35310 Paper cassette assembly (part of 2) Page 5-8 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 125: Pl 6.1 Spare Parts Not Illustrated

    Region B Generic AT, 019E38680 Cassette holder latch, left 300K70980 450cp Hong Kong/China V3.12 Disk 019E38690 Cassette holder latch, right 300K70700 450c CD-ROM assembly with case, 830E06730 Cradle EFSP, V1.02 300K70710 450c CD-ROM assembly with case, 830E06740 Cradle Bracket EFIGSP...
  • Page 126 S/W kit 110K09500 Telephone with Handset 117K26560 Data Cable (UK) 117K26608 Tel Cable (RX) 117K26638 Tel Cable (Spain) 117E18690 IEEE 1284 Cable 110K07490 Telephone 673K42160 Cradle Screw Kit (Thumb and Fastener Screws) Page 5-10 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 127: Spare Parts Index

    160K32290 300K71101 022K53800 101K32540 123K03910 160K32300 300K71220 023E14841 105E07621 123K04080 160K33140 300K71230 032K02721 105K16320 123K04740 160K45370 300K81190 033E03512 110K07490 127E10790 160K49400 300K81200 038K11210 110K09050 127E10800 160K59960 300K81210 041K05311 110K09060 127E10810 160K59970 300K81220 Xerox WorkCentre 450c/450cp Service Manual Page 5-11 www.printcopy.info...
  • Page 128 300K81260 891E80820 300K81290 891E80830 300K81670 891E80840 300K81680 891E80850 600K57360 891E80860 673K35450 891E80870 673K35460 891E81680 673K35470 917W00721 673K35480 673K35490 673K38570 673K38620 673K38790 673K38820 673K42160 673K55150 830E06730 830E06740 891E08110 891E26530 891E37170 891E37180 891E42070 891E42080 Page 5-12 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 129: General Procedures

    Electro Static Discharge ....6-1 General Procedures includes a Service Menu WorkCentre 450c/450cp Test Print ..6-2 map, all unique service operations and the Xerox Test Print 82P151 ....6-3 machine soft switch parameters and defaults.

  • Page 130: Workcentre 450C/450Cp Test Print

    WorkCentre 450c/450cp Test Print This section shows the WorkCentre 450c/ 450cp test print. This page shows the printer ROM version, the page setup, and font setup for the WorkCentre. It also contains a test pattern, gray or color scale, and font printout for your evaluation.

  • Page 131: Xerox Test Print 82P151

    Xerox Test Print 82P151 The illustration on the following page shows the Xerox Test Print, part number 82P151. Use the test print when you test the copier and fax functions of the WorkCentre 450c/450cp (see System Check: Copier, and System Check: Send Fax.

  • Page 132: Firmware Updates

    Firmware Updates From time to time Xerox will issue firmware updates for the WorkCentre 450c/450cp. To update the firmware, the WorkCentre must be attached to a PC through the supplied IEEE 1284 printer cable. Also, the PC must be in DOS mode, not in a DOS shell window.

  • Page 133: Service Menu Map

    1 Documents 2 Protocol trace 5 Test Group 1 Modem test 2 Sensors test 3 Keyboard test 4 LCD test 5 Panel LED 6 RAM test 7 DTMF test 8 Dial pulse test Xerox WorkCentre 450c/450cp Service Manual Page 6-5 www.printcopy.info...

  • Page 134: Information

    Exiting Service Mode To exit Service Mode: 1. Press the Exit key. 2. Press the * key three times. Figure 6-3 Additional Information Obtained By Printing the Service Menu Page 6-6 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 135: Soft Switch Setup

    How to change a soft switch 24: FEDCBA9876543210 0011000111100001 Soft switch in the WorkCentre 450c/ 5. Use the arrow keys to move to the desired bit position, 450cp control panel, or through the and the 1 or 0 key to change the value.

  • Page 136: Soft Switch Tables

    Soft Switch Tables Note: If [*] appears for a table entry in the Default column, that option is customer changeable or selectable through the 450c/450cp menu system. S/W Switch 0 BIT No NAME Define Default Description 2 ~ 0 KEY_IN_TIME...
  • Page 137 The percent of error line is more than ERROR_LINE, RTN(RTP) will be transmitted. FLAG_HOLD_TIME 0 : 90 Sec Wait Time for a frame after 1 : 180 Sec reception of HDLC flag Xerox WorkCentre 450c/450cp Service Manual Page 6-9 www.printcopy.info...
  • Page 138 01 for Germany (47db) 10 : 49.5db DATA CAPTURE MODE 0 : when strobe When 0, the interface ASIC will down latch data at strobe falling edge. 1 : when strobe up Page 6-10 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 139 Password transmission is possi- 1 : ON ble when ON MAILBOX RECEIPT 0 : OFF in case of ON mail box report REPORT 1 : ON automatically print out after MBOX reception Xerox WorkCentre 450c/450cp Service Manual Page 6-11 www.printcopy.info...
  • Page 140 00 [*] receive mode 01 : Manual 10 : Answering F ~ E CONFIRMATION_RPT 00 : ALWAYS 10 [*] confirmation report will be printed 01 : OFF automatically 11 : ON ERRORS Page 6-12 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 141 B ~ A RESERVED DIAGNOSTIC_MODE 0 : NO Diagnostic mode YES/NO 1 : YES F ~ D RESEND_RETRY 000 : Disable Total number of resend 001 : 1 time 111 : 7 times Xerox WorkCentre 450c/450cp Service Manual Page 6-13 www.printcopy.info...
  • Page 142 010 : SUPER FINE 8 ~ 6 CONTRAST 000 : Lighten Transmission contrast 001 : Normal 010 : Darken 100 : Halftone Lighten 101 : Halftone Normal 110 : Halftone Darken F ~ 9 RESERVED Page 6-14 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 143 01 : 4 mm (23 data lines) 10 : 6 mm (47 data lines) 11 : 8 mm (70 data lines) SCAN WIDTH 0 : 208 mm Scan width 1 : 214 mm Xerox WorkCentre 450c/450cp Service Manual Page 6-15 www.printcopy.info...
  • Page 144 0 : 32 (when bottom margin = Printer vertical margin in using 12.7 mm) LATOUR 1 : 95 (when bottom margin = 18 MTF_DISABLE 0 : MTF enabled Edge emphasis enable/disable 1 : MTF disabled Page 6-16 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 145 Minimum dial tone OFF time in 001 : OFF_TIME_200MS burst mode 010 : OFF_TIME_250MS *Sweden : TIME/10-10ms 011 : OFF_TIME_300MS 100 : OFF_TIME_350MS 101 : OFF_TIME_400MS 110 : OFF_TIME_450MS 111 : OFF_TIME_500MS Xerox WorkCentre 450c/450cp Service Manual Page 6-17 www.printcopy.info...
  • Page 146 110 : OFF_TIME_1000MS 111 : OFF_TIME_1100MS F ~ D DT_DETECT_LEVEL 000 : DETECT_LVL_25DB Dial tone detection level 001 : DETECT_LVL_30DB 010 : DETECT_LVL_35DB 011 : DETECT_LVL_40DB 100 : DETECT_LVL_45DB 101 : DETECT_LVL_50DB ♣ Page 6-18 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 147 1011 : FREQ_600HZ 1100 : FREQ_650HZ 1101 : FREQ_900HZ 1110 : FREQ_1150HZ 1111 : NO_FREQ 7 ~ 4 DT_FREQ_2 " " B ~ 8 DT_FREQ_3 " " F ~ C DT_FREQ_4 " " Xerox WorkCentre 450c/450cp Service Manual Page 6-19 www.printcopy.info...
  • Page 148 F ~ D BUSY_MIN_ON_TIME 000 : MIN_ON_TIME_100MS Minimum ON time in burst mode 001 : MIN_ON_TIME_150MS 010 : MIN_ON_TIME_200MS 011 : MIN_ON_TIME_250MS 100 : MIN_ON_TIME_300MS 101 : MIN_ON_TIME_350MS 110 : MIN_ON_TIME_400MS 111 : MIN_ON_TIME_450MS Page 6-20 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 149 Minimum OFF time in burst 6 ~ 4 BUSY_MIN_OFF_TIME 000 : 100MS 001 : 150MS mode 010 : 200MS 011 : 250MS 100 : 300MS 101 : 350MS 110 : 400MS 111 : 450MS Xerox WorkCentre 450c/450cp Service Manual Page 6-21 www.printcopy.info...
  • Page 150 1110 : 1000MS 1111 : 1100MS D ~ B BUSY_DETECT_LVL 000 : 25DB Detection level 001 : 30DB 010 : 35DB 011 : 40DB 100 : 45DB 101 : 50DB F ~ E RESERVED Page 6-22 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 151 1011 : FREQ_600HZ 1100 : FREQ_650HZ 1101 : FREQ_900HZ 1110 : FREQ_1150HZ 1111 : NO_FREQ 7 ~ 4 BUSY_FREQ_2 " " B ~ 8 BUSY_FREQ_3 " " F ~ C BUSY_FREQ_4 " " Xerox WorkCentre 450c/450cp Service Manual Page 6-23 www.printcopy.info...
  • Page 152 C ~ A INTERDIGIT_DELAY 000 : IDP_DELAY_400MS inter digit time for pulse dial 001 : IDP_DELAY_500MS 010 : IDP_DELAY_600MS 011 : IDP_DELAY_700MS 100 : IDP_DELAY_800MS 101 : IDP_DELAY_900MS 110 : IDP_DELAY_1000MS 111 : IDP_DELAY_1100MS Page 6-24 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 153 DTMF_TEST_TIME 000000 : dtmf_min_on_time DTMF Test tone generation time 000001 : 3S by 3sec steps. Can be used in 000010 : 6S Service mode. If 0 then use DTMF min on time Xerox WorkCentre 450c/450cp Service Manual Page 6-25 www.printcopy.info...
  • Page 154 MEM COPY MODE 0 : direct copy 1 : memory scan + memory print RESERVED RESERVED TTI_REPLACE_FLAG 0 : do not replace Replace upper document 1 : replace lines by TTI header Page 6-26 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 155 Min Ring on time 01 : MIN_ON_TIME_350MS 10 : MIN_ON_TIME_500MS 11 : MIN_ON_TIME_750MS F ~ E MAX_RING_ON_TIME 00 : MAX_ON_TIME_3S Max Ring on time 01 : MAX_ON_TIME_6S 10 : MAX_ON_TIME_9S 11 : MAX_ON_TIME_12S Xerox WorkCentre 450c/450cp Service Manual Page 6-27 www.printcopy.info...
  • Page 156 100 : INTERVAL_2MIN 101 : INTERVAL_3MIN 110 : INTERVAL_4MIN 111 : INTERVAL_5MIN F ~ E NUMBER_OF_SUBGR 00 : NUM_OF_SGROUP_3 Number of members in subgroup 01 : NUM_OF_SGROUP_5 10 : NUM_OF_SGROUP_7 11 : NUM_OF_SGROUP_9 Page 6-28 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 157 010 : 1000MS 011 : 1500MS 100 : 2500MS 101 : 3500MS 110 : 4500MS 111 : 5500MS F ~ D SCAN_MARGIN_FLAG Used to evaluate scan motor counter default : 010 Xerox WorkCentre 450c/450cp Service Manual Page 6-29 www.printcopy.info...
  • Page 158 100 : 800MS 101 : 900MS 110 : 1000MS 111 : 1100MS F ~ D PABX_DETECT_LVL 000 : 25DB 001 : 30DB 010 : 35DB 011 : 40DB 100 : 45DB 101 : 50DB Page 6-30 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 159 1010 : 550HZ 1011 : 600HZ 1100 : 650HZ 1101 : 900HZ 1110 : 1150HZ 1111 : NO_FREQ 7 ~ 4 PABX_FREQ_2 " B ~ 8 PABX_FREQ_3 " F ~ C PABX_FREQ_4 " Xerox WorkCentre 450c/450cp Service Manual Page 6-31 www.printcopy.info...
  • Page 160 USA/Canada: 000 450c: ACO: 001 000 : English XL: 010 001 : International English 010 : French Canadian 011 : French 100 : Germany 101 : Italian 110 : Spanish 111 : Portuguese Page 6-32 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 161 100 : 800MS 101 : 900MS 110 : 1000MS 111 : 1100MS F ~ D IT_DETECT_LVL 000 : 25DB 001 : 30DB 010 : 35DB 011 : 40DB 100 : 45DB 101 : 50DB Xerox WorkCentre 450c/450cp Service Manual Page 6-33 www.printcopy.info...
  • Page 162 1010 : 550HZ 1011 : 600HZ 1100 : 650HZ 1101 : 900HZ 1110 : 1150HZ 1111 : NO_FREQ 7 ~ 4 IT_FREQ_2 " B ~ 8 IT_FREQ_3 " F ~ C IT_FREQ_4 " Page 6-34 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 163 1 : Disconnect when RTN when receive RTN D ~ C RTC NUMBER 00 : 1 EOP numbers of 01 : 3 RTC signal 10 : 6 11 : 16 F ~ E RESERVED Xerox WorkCentre 450c/450cp Service Manual Page 6-35 www.printcopy.info...
  • Page 164 3 : 900 1800 2700 larger than this value, then RTN is 7 : 2100 4200 6300 sent. ON HOOK DIAL 0 : diabled When 1, press 1 : enabled SPEED twice to dial in on-hook Page 6-36 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 165 0 : 0.5 sec base Packet time from DCE to DTE 1 : 1 sec base 2 : 2 sec base CL2_MISSING_AS_0 0 : NO Do not change missing parame- 1 : YES ter in Class2 Xerox WorkCentre 450c/450cp Service Manual Page 6-37 www.printcopy.info...
  • Page 166 RETRY FAILED FAXES 0 : No 1 [*] To enable RESEND when 1 : Yes comm. error after sending starts. F ~ 8 REDIAL INTERVAL 00000000 : 0 min. 3 [*] 11111111 : 255min Page 6-38 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 167 D ~ C FAX SPEED 00 : 4800 bps 10 [*] Maximum fax speed 01 : 9600 bps 10 : 14400 bps ALARM SOUND 0 : Off 1 [*] 1 : On Xerox WorkCentre 450c/450cp Service Manual Page 6-39 www.printcopy.info...
  • Page 168 Timer used in DOS printing DOWNLOAD MODE 0 : Polling mode When download to printer, if 1, 1 : DMA mode data is transferred by DMA oper- ation which is faster than polling operation. Page 6-40 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 169 (See Ink low threshold 2 in switch 28) F ~ 8 THE NUMBER OF MFPI 0 ~ 255 After MFPI init, the first N 1284 RESPONSE BY TASK requests are handled not by ISR but by TASK. Xerox WorkCentre 450c/450cp Service Manual Page 6-41 www.printcopy.info...
  • Page 170 Top, left, and right margins: 5 mm Point size: 6, 12, 24 pt (Incoming faxes) Bottom margin: 10 mm CG Times (portrait and landscape) Pitch: Proportional Point size: 6, 12, 24 pt Page 6-42 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 171 Letter: 8.5x11 in (216x279 mm) tray, 20 sheets maximum) Legal: 8.5x14 in (216x356 mm) A4: 8.3x11.7 in (210x297 mm) Unprintable area Top, left, and right margins: 5 mm Bottom margin: 10 mm (Copying) Xerox WorkCentre 450c/450cp Service Manual Page 6-43 www.printcopy.info...
  • Page 172 600T1997 Head Gap Adjustment Tool Whenever you install a Tag kit or all the piece parts that make up a Tag, mark the Multimeter (Volts/Ohms) appropriate number in the Tag matrix. Page 6-44 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 173: Section Contents

    Connector numbers are repeated on more than one component. Printer interface Board BSD ..... 7-5 Connector Pin Assignments ....7-6 LCU Module DIP Switch Settings (not for USA) ....7-10 Line connection pinouts ....7-14 Xerox WorkCentre 450c/450cp Service Manual Page 7-1 www.printcopy.info...

  • Page 174: Connector Locations Bsd

    J5 to carriage motor J6 to paper feed motor J7 to cam sensor J8 to paper out sensor Power Scanner J9 to printer cover open sensor Supply Relay Board Main SOPEN Circuit Board Page 7-2 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 175: Scanner Relay Board Bsd

    Scanner Relay Board BSD Scanner Cover To ADF Scanner CIS Open Switch Sensors SOPEN Scanner Relay Board Control Panel Circuit Board LCD PCB To Main Board Xerox WorkCentre 450c/450cp Service Manual Page 7-3 www.printcopy.info...

  • Page 176: Analog Relay Board Bsd

    Analog Relay Board BSD Speaker Wire harness on USA version. Edge connector on all others Page 7-4 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

  • Page 177: Printer Interface Board Bsd

    Printer interface Board BSD Paper out Ink level Printer cover sensor sensor open sensor Paper feed motor sensor Printer interface board Encoder Carriage motor CN10 on main Paper path circuit board sensor Xerox WorkCentre 450c/450cp Service Manual Page 7-5 www.printcopy.info...

  • Page 178: Connector Pin Assignments

    Table 7-4 Connector OPE (to control panel) Description DOC-ADF +5 VDC +5 VDC DOC-RPS OPRX Table 7-2 Connector CIS OPIX (to CIS assembly) Description CIS-DATA +5 VDC -12 VDC CIS-START CIS-CLK CIS-LED-ON +5 VDC Page 7-6 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 179 +5 VDC +12 VDC CIS-DATA Not Used +5 VDC DSR+ DOC-RPS Not Used DOC-ADF DIR+ Not Used SCAN-COVER-OPEN TEL LOOP+ Not Used CMLR+ CO(7) FAXTX CO(6) Frame GND CO(5) DTMF CO(4) FAXRX Xerox WorkCentre 450c/450cp Service Manual Page 7-7 www.printcopy.info...
  • Page 180 OPTX Description CIS-LED-ON PAPER OUT CIS-CLK PAPER IN CIS-START NO PAPER -12 VDC +5 VDC ENCA +5 VDC ENCB CIS-DATA +5 VDC +5 VDC ENC OUT DOC-RPS Not Used DOC-ADF CAM OUT Page 7-8 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 181 Table 7-9 Connector CN10 Description CAM IN Not Used Not Used PHOTORA PHOTORB PHOTORC PHOTORD Not Used Not Used CMDTDRA CMDTDRB CMDTDRC CMDTDRD Not Used +5 VDC INK LEVEL SLED7 SLED6 Xerox WorkCentre 450c/450cp Service Manual Page 7-9 www.printcopy.info...

  • Page 182: Lcu Module Dip Switch Settings (Not For Usa)

    LCU Module DIP Switch Settings (not for USA) Refer to the following illustration to locate switches on the LCUs. LCU for RX LCU for France Figure 7-1 LCU Switch Locations (SW1) COUNTRY CODE LANGUAGE DIAG Page 7-10 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 183 TURKEY (TR) 01011 HOLLAND (NL) 11000 HUNGARY (HU) 01100 NORWAY (NO) Language code definition: 1 = ON S6 - S7 LANGUAGE S6 - S7 LANGUAGE S6 - S7 LANGUAGE PRIMARY SECONDARY THIRD Xerox WorkCentre 450c/450cp Service Manual Page 7-11 www.printcopy.info...
  • Page 184 Return loss (Off-Hook AC Impedance: 1 = ON DC Holding (Off-Hook DC resistance: 1 = ON Page 7-12 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 185 Dial pulse dialing (Pulse shape and spark quench: 1 = ON Ring and input impedance, Ring sensitivity and insensitivity: 1 = ON Xerox WorkCentre 450c/450cp Service Manual Page 7-13 www.printcopy.info...
  • Page 186 Line 1 Tel 1 Line 2 Tel 2 Tel 2 Germany (DE) (Harness Name : DE) Pin No. Line Socket Ext-Tel Socket Tel 2 Line 2 Tel 1 Line 1 Tel 2 Page 7-14 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...
  • Page 187 Tel 1 Line 1 Tel 2 Tel 2 Spain (ES) (Harness Number : ES) Also used for Ireland Pin No. Line Socket Ext-Tel Socket Line 1 Tel 1 Line 2 Tel 2 Xerox WorkCentre 450c/450cp Service Manual Page 7-15 www.printcopy.info...
  • Page 188 This page intentionally left blank Page 7-16 Xerox WorkCentre 450c/450cp Service Manual www.printcopy.info...

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