Action Yes No
Step 23
a Check the redrive belt for proper tension, and adjust if necessary.
b Check the redrive gear and belt for wear or damage, and replace if
necessary.
Does the problem remain?
Go to step 24. The problem is solved.
Step 24
Replace the motor (redrive). See
“Motor (redrive) removal” on page
364.
Does the problem remain?
Go to step 25. The problem is solved.
Step 25
Make sure that the blue screws and marked screws in the paper path area
are tightened.
Does the problem remain?
Go to step 26. The problem is solved.
Step 26
Check the expansion controller board pins for damage, and replace if
necessary. See
“Expansion controller board removal” on page 351.
Does the problem remain?
Go to step 27. The problem is solved.
Step 27
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.
23y paper jams
23y paper jam messages
Error code Description Action
230.91 The paper remains detected at the sensor
(duplex pass through 1) after the printer is
turned on.
See
“Duplex jam service check” on page 80.
230.93 The sensor (duplex pass through 1) did not
detect the paper.
232.93 The paper remains detected at the sensor
(registration) during a duplex job.
232.99 Skew correction did not complete at the
registration roller during a duplex job.
7421
Diagnostic information
79
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