Xerox Phaser 7500 Service Manual page 208

Error Messages and Codes
3-70
Troubleshooting Procedure (Continued)
Step Actions and Questions
4 Check the wiring harness.
Check the connection between the
Motor Drive PWB J504 and the
Fuser Drive Motor J243 for open
circuit, short circuit, and poor
contact.
Is it conducting properly?
5 Perform the BTR 1/2 Contact &
Retract test in Diagnostics.
Does the Fuser Drive Motor rotate?
6 Check the connection between the
Fuser Drive Motor J243-8 and the
Motor Drive PWB J504-1 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
Fuser Drive
■
Motor (REP poor contacts.
3.3,
page 8-28)
Motor Drive
■
PWB (REP
18.13,
page 8-204)
MCU PWB
■
(REP 18.12,
page 8-202)
Go to step 6. Check the 1st
BTR Contact/
Retract Gear for
blockage and
damage.
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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