Xerox Phaser 7500 Service Manual page 250

Error Messages and Codes
3-112
Troubleshooting Procedure (Continued)
Step Actions and Questions
4 Check the connections between
the Motor Drive PWB J508 and the
Drum/ Deve Drive Motor (K) J240,
as well as between the Motor Drive
PWB J506 and the Drum/ Deve
Drive Motor (K) J241 for open
circuits, short circuits, and poor
contacts.
Are they conducting properly?
5 Install the Imaging Unit (K) and
the Developer (K) and close the
Front Cover.
Perform the Developer Motors test
in Diagnostics.
Does the Drum/ Deve Drive Motor
(K) rotate?
6 Check the connection between the
Drum/Deve Drive Motor (K) J241-8
and the Motor Drive PWB J506-1
for open circuit, short circuit, and
poor contact.
Is it conducting properly?
Yes No
Replace the Repair the
following parts sections that
in sequence: have short
circuits and
Drum/Deve
■
Drive Motor poor contacts.
(K) (REP 3.9,
page 8-35)
Motor Drive
■
PWB (REP
18.13,
page 8-204)
MCU PWB
■
(REP 18.12,
page 8-202)
Go to step 6. Check the
Imaging Unit
(K) and the
Developer (K) for
loading.
Replace the Repair the
following parts sections that
in sequence: have short
circuits and
Motor Drive
■
PWB (REP poor contacts.
18.13,
page 8-204)
MCU PWB
■
(REP 18.12,
page 8-202)
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