Actions Yes No
Step 7
CAUTION—SHOCK HAZARD: Do not perform this step if the printer
is on.
a Make sure that the following cables are properly connected:
• High voltage charge cable
• High voltage transfer cable
• High voltage toner charge cable
b Make sure that the high voltage charge and developer contacts are
secure.
c Check the high voltage board cables and contacts for damage, and
replace if necessary.
Does the problem remain?
Go to step 8. The problem is solved.
Step 8
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 9. The problem is solved.
Step 9
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.
Shadow images check
ABCD
ABCD
ABCD
ABCD
Leading edge
Trailing edge
7421
Diagnostic information
52
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