Fan 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
a Reseat the fan cable. Reseat also the cable connecting the fan to the
board.
b Check the cable for damage, and replace if necessary.
Does the problem remain?
Go to step 3. The problem is solved.
Step 3
Check the fan for damage and functionality, and replace if necessary.
Does the problem remain?
Go to step 4. The problem is solved.
Step 4
Check the engine controller board pins for damage, and replace if
necessary. See
“Engine controller board removal” on page 353.
Does the problem remain?
Contact the next level
of support.
The problem is solved.
189 errors
189 error messages
Error code Description Action
189.00 The 2 x 500‑sheet tray communication failed. See
“2 x 500-sheet tray communication error
service check” on page 165.
189.00 The 2500‑sheet tray communication failed. See
“2500-sheet tray communication error service
check” on page 166.
189.01 The expansion controller board communication
failed.
See
“Expansion controller board failure service
check” on page 165.
189.61 The staple, hole punch finisher communication failed.
189.61 The staple finisher communication failed.
189.63 The horizontal paper transport communication failed.
189.64 The hole punch booklet finisher communication
failed.
7421
Diagnostic information
164
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