Xerox Phaser 4500, Service Manual

Page: 188 / 537

General Troubleshooting 4-35
HVPS/Engine Logic Board
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■
HVPS/Engine Logic Board
■
Print Cartridge Right Guide
Assembly
■
Print Cartridge
■
ANT Harness Assembly
■
LVPS Harness Assembly
■
“Print Cartridge, Transfer Roller Assembly” on
page 10-21
■
“24 V Interlock, Rear Cover Switch, Main Motor, Sub
Fan, Exit Motor Assembly” on page 10-18
■
“Print Engine General Wiring Diagram” on
page 10-17
■
“Print Engine Plug/Jack Locator” on page 10-3
Troubleshooting Procedure
Steps Actions and Questions Yes No
1
Check the power to the Print Cartridge
Right Guide Assembly.
Is Print Cartridge Right Guide Assembly
installed correctly?
Do the contacts on the Print Cartridge
Right Guide make proper contact with
both the plate of the HVPS/Engine Logic
Board and Print Cartridge? Go to step 2. Replace the Print
Cartridge Right
Guide Assembly
(page 8-58).
2 Check the Print Cartridge Right Guide
Assembly:
Remove the Print Cartridge Right Guide
Assembly (page 8-58).
Is the Ground Plate of the Print
Cartridge Right Guide damaged or
soiled? Replace the Print
Cartridge Right
Guide Assembly
(page 8-58).
Go to step 3.
3 Check 24 V to the HVPS/Engine Logic
Board:
1. Remove the Print Cartridge.
2. Measure the voltage across P/J10-1 <=>
P/J10-4 on the HVPS/Engine Logic
Board.
Is the v24 VDC?
Go to step 5. Go to step 4.