Action Yes No
Step 3
a If applicable, remove all internal options.
b Reset the printer, and then resend the print job.
Does the problem remain?
Go to step 4. The problem is solved.
Step 4
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.
Excess options service check
Action Yes No
Step 1
Reset the printer, and then resend the print job.
Does the problem remain?
Go to step 2. The problem is solved.
Step 2
If applicable, make sure that the internal option is supported.
Does the problem remain?
Go to step 3. The problem is solved.
Step 3
a If applicable, remove all internal options.
b Reset the printer, and then resend the print job.
Does the problem remain?
Go to step 6. Go to step 4.
Step 4
Check if the number of internal options installed is allowed, and remove
the excess option.
Does the problem remain?
Go to step 5. The problem is solved.
Step 5
Check if the number of input options installed is allowed, and remove the
excess option.
Does the problem remain?
Go to step 6. The problem is solved.
Step 6
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.
7421
Diagnostic information
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