Xerox Phaser 4500 Service Manual page 128

Error Messages and Codes
3-50
Troubleshooting Procedure (continued)
Steps Actions and Questions
1. Remove the duplex unit left cover
6
(page 8-96).
2. Manually rotate the gears.
Do the duplex unit roller and all
gears rotate smoothly?
1. Open the duplex unit housing cover
7
and insert paper, then close it.
2. Manually rotate the upper roller gear
clockwise and check paper transfer.
Is the paper transferred smoothly?
Enter Service Diagnostics, and from
8
the Motors/Fan Tests
the Duplex Motor High
Does the duplex unit motor rotate
normally?
9 Enter Service Diagnostics, and from
the Motors/Fan Tests
the
Duplex Motor Low
Does the duplex unit motor rotate
normally?
Yes
Go to step 7.
Go to step 8.
Go to step 9.
menu select
test.
Replace the
menu select HVPS/engine
test. logic board
(page 8-73).
Phaser 4500/4510 Service Manual
No
Replace parts
as necessary.
Replace drive
parts as
necessary.
Go to "Duplex
Unit Motor" on
page 4-50.