Xerox PHASER 7500 - HV Fan Fail

Phaser 7500 Printer Service Manual 3-117
Error Messages and Codes
HV Fan Fail
The HV Fan error was detected.
Applicable Chain-Link Code
• 042-329: HV Fan Fail
Initial Actions
• Rotate the HV Fan manually to check for loading.
• Power cycle the printer.
• If the problem persists, follow the procedure below.
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ HV Fan Assy, PL4.3.1
■ MCU PWB, PL18.3.6
Troubleshooting Procedure
Step Actions and Questions Yes No
1 Check the Fault History.
Has error 041-330 MCU PWB F7
Blows occurred?
Check whether
the F7 on the
MCU PWB has
opened.
Go to step 2.
2 Turn Off the power.
Disconnect and reconnect P/ J235.
Turn On the power.
Perform the Fan Motors test in
Diagnostics.
Is the HV Fan rotating?
Go to step 4. Go to step 3.
3 Check the connection between the
HV Fan J235 and the MCU PWB
J417 for open circuit, short circuit,
and poor contact.
Is it conducting properly?
Replace the
following parts
in sequence:
■ HV Fan (REP
4.3,
page 8-40)
■ MCU PWB
(REP 18.12,
page 8-202)
Repair the
sections that
have short
circuits and
poor contacts.
4 Check the connection between the
HV Fan J235-2 and the MCU PWB
J417-A12 for open circuit, short
circuit, and poor contact.
Is it conducting properly?
Replace the
MCU PWB (REP
18.12,
page 8-202).
Repair the
sections that
have short
circuits and
poor contacts.