3-118 Phaser 7500 Printer Service Manual
Error Messages and Codes
IBT Fan Fail
The IBT Fan error was detected.
Applicable Chain-Link Code
• 042-334: IBT Fan Fail
Initial Actions
• Rotate the Fan manually to check for binding.
• Power cycle the printer.
• If the problem persists, follow the procedure below.
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
â– IBT Fan Assy, PL4.2.8
â– 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?
Is F7 on the MCU PWB open?
Note: The condition that caused
F7 to open must be corrected
before replacing the MCU PWB.
Go to step 5. Go to step 2.
2 Perform the IBT Fan Motors test in
Diagnostics.
Are both IBT Fans 1 and 2 rotating?
Go to step 5. Go to step 3.
3 Turn Off the power.
Reseat P/ J 619 and P 416.
Turn On the power.
Repeat the IBT Fan Motors test in
Diagnostics.
Are both IBT Fans 1 and 2 now
rotating?
Go to step 4. Go to step 5.
4 Does the error appear now when
making a print?
Go to step 5. Troubleshooting
complete.
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