Printer is printing solid black pages
Actions Yes No
Step 1
Check the imaging unit for damage.
Is it free of damage?
Go to step 2. Replace the imaging
unit.
Step 2
Remove any contamination from the imaging unit contacts.
Does the problem remain?
Go to step 3. The problem is solved.
Step 3
Check the imaging unit contacts for damage.
Are they free of damage?
Replace the power
supply. See “Power
supply removal” on
page 191.
Replace the printer.
Repeating defects
Actions Yes No
Step 1
Measure the distance between defects. Is the distance between defects
equal to any of the following?
• 3.82 in. (97 mm)
• 1.85 in. (47 mm)
• 1.5 in. (38 mm)
Replace the imaging
unit.
Go to step 2.
Step 2
Is the distance between defects equal to 3.15 in. (80 mm)?
Replace the fuser. See
“Fuser removal” on
page 211.
Contact the next level
of support.
4514-420, -430
Diagnostic information
40
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