Action Yes No
Step 11
Replace the sensor (fusing speed). See
“Sensor (fusing speed) removal”
on page 317.
Does the problem remain?
Go to step 12. The problem is solved.
Step 12
Check the controller board pins for damage, and replace if necessary. See
“Controller board removal” on page 356.
Does the problem remain?
Contact the next level
of support.
The problem is solved.
Fuser temperature failure service check
Action Yes No
Step 1
Enter the Diagnostics menu, and then navigate to:
PRINTER SETUP > Reset Engine Service Error
Does the problem remain?
Go to step 2. The problem is solved.
Step 2
Check the environment for humidity. Remove or reduce sources of
humidity if necessary.
Does the problem remain?
Go to step 3. The problem is solved.
Step 3
a Make sure that the sensor (fuser temperature) is free from dust.
b Check the sensor for damage, and replace if necessary.
Does the problem remain?
Go to step 4. The problem is solved.
Step 4
a Make sure that the sensor (registration humidity) is free from dust.
b Check the sensor for damage, and replace if necessary.
Does the problem remain?
Go to step 5. The problem is solved.
Step 5
Observe the paper exit fan.
Is it working properly?
Go to step 7. Go to step 6.
7421
Diagnostic information
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