Xerox Phaser 4500 Service Manual page 192

General Troubleshooting
4-38
Troubleshooting Procedure (continued)
Steps Actions and Questions
Check the print cartridge right guide
6
assembly (1)
Does the Ground Plate of the print
cartridge right guide make proper contact
with terminals on the HVPS/engine logic
board?
7 Check the print cartridge right guide
assembly (2):
1. Remove the print cartridge.
2. Remove the print cartridge right guide
assembly (page 8-47).
Is the Ground Plate of the print cartridge
right guide free of damage or deposits?
8 Check ANT harness assembly for
continuity:
1. Disconnect P/J15 from the HVPS/engine
logic board.
Is J15 <=> J150 continuous?
9 Check the PWB grounds:
Remove the LVPS Shield Plate and HVPS
Shield Plate. (RRP12.1, 12.9)
Is the ground normal?
Are the screws for the grounds of the
following PWBs firmly tightened?
All screws of HVPS/engine logic board
All screws of LVPS
When an Optional 550-Sheet Paper Feeder
is installed:
Are the screws of the 550-sheet feeder
PWBA firmly tightened?
When a duplex unit is installed:
Are the screws of the duplex unit PWBA
firmly tightened?
When a stacker is installed:
Are the screws of the stacker PWBA firmly
tightened?
10 Warning: Allow the fuser assembly to cool
down before removing.
Replace the fuser assembly (page 4-15).
Does the problem still occur after
replacement?
11 Replace the HVPS/engine logic board
(page 8-73).
Does the problem still occur after
replacement?
Yes No
Go to step 7. Replace the
print
cartridge
right guide
assembly
(page 8-47).
Go to step 8. Clean the
plate or
replace the
print
cartridge
right guide
assembly
(page 8-47).
Go to step 9. Replace ANT
harness
assembly.
Go to step 10. Repair the
faulty ground.
Go to step 11. Problem
solved.
Replace all Problem
related parts. solved.
Phaser 4500/4510 Service Manual