Xerox Phaser 7500 Service Manual page 252

Error Messages and Codes
3-114
Troubleshooting Procedure (Continued)
Step Actions and Questions
4 Check the connections between
the Motor Drive PWB J508 and the
IBT Drive Motor J248, as well as
between the Motor Drive PWB
J507 and the IBT Drive Motor J249
for open circuits, short circuits, and
poor contacts.
Are they conducting properly?
5 Remove the cheat.
Install the IBT Unit and close the L/
H Cover.
Perform the IBT Belt Motor test in
Diagnostics.
Does the IBT Drive Motor rotate?
6 Check the connection between the
IBT Drive Motor J249-8 and the
Motor Drive PWB J507-1 for open
circuit, short circuit, and poor
contact.
Yes No
Replace the Repair the
following parts sections that
in sequence: have short
circuits and
IBT Drive
■
Motor poor contacts.
Assembly
(REP 3.10,
page 8-36)
Motor Drive
■
PWB (REP
18.13,
page 8-204)
MCU PWB
■
(REP 18.12,
page 8-202)
Go to step 6. Check the IBT
Drive for loading.
Also, check the
IBT for loading
due to blockage
in the IBT Waste
Toner Collection
Auger.
Replace the Repair the
following parts sections that
in sequence: have short
circuits and
Motor Drive
■
poor contacts.
PWB (REP
18.13,
page 8-204)
MCU PWB
■
(REP 18.12,
page 8-202)
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