Actions Yes No
Step 7
CAUTION—SHOCK HAZARD: Do not perform this step if the printer
is on.
a Make sure that the high voltage board cables are properly connected.
b Check the high voltage board for damage, and replace if necessary.
Does the problem remain?
Go to step 8. The problem is solved.
Step 8
a Make sure that the printhead is properly installed.
b Check the printhead for damage, and replace if necessary. See
“Printhead removal” on page 275.
Does the problem remain?
Contact the next level
of support.
The problem is solved.
Toner smear check
Leading edge
Trailing edge
ABC
DEF
Actions Yes No
Step 1
Make sure that the paper type and weight are supported.
Does the problem remain?
Go to step 2. The problem is solved.
Step 2
Check the environment for proper 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 fuser and its cable are properly connected.
b Check the fuser for damage, and replace if necessary. See “Fuser
removal” on page 279.
Does the problem remain?
Go to step 4. The problem is solved.
7421
Diagnostic information
57
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