Xerox 3450B - Phaser B/W Laser Printer, Service Manual, Page: 67 / 180

3-20 Phaser 3450 Laser Printer Service Manual
Replace Print Cartridge (0x53) or Invalid Print
Cartridge (0x55)
The printer’s front panel displays “Replace Print Cartridge”. The Print Cartridge has
been replaced with the correct Xerox Print Cartridge. Printer power has been cycled
and the error still appears.
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
Cover open interlock switch "Print Engine Interconnect Diagram" on page 10-2
Switch actuator lever
Main Board
Troubleshooting Procedure
Steps Actions and Questions Yes No
1
Is the switch actuating lever on top of the
Print Cartridge damaged?
Replace Print
Cartridge.
Go to Step 2.
2
Is the Cover Open Switch connector
(CN20) properly connected to the Main
Board?
Go to Step 3. Reconnect CN20.
3
Use the embedded diagnostics to check
operation of the Cover Open Switch. Does
the switch operate correctly?
Replace the Main
Board.
Replace the
Cover Open
Switch.