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Step
Check the four PC cartridges for spots or other damage
3
on the drum surfaces.
Are the PC cartridges free of excess wear and
contamination?
Print the print quality page suite.
4
Do the spots repeat for a given color?
Check the heat belt and pressure roll in the fuser
5
assembly for scratches or defects.
CAUTION: The fuser assembly might be hot.
Allow the fuser assembly to cool.
Remove the fuser assembly.
Is there contamination or cracks on the heat belt
and/or pressure roll?
Check the 2nd transfer roller for contamination and wear.
6
Is the 2nd transfer roller free of excess wear and
contamination?
Replace the transfer belt assembly. Go to
7
assembly removal" on page
Does the problem remain?
Check the LED printhead assembly.
8
Replace the LED printhead assembly.
Go to
"LED printhead removal" on page
Does the problem remain?
Check the upper printer engine PCBA for proper
9
connectivity. Disconnect and reconnect all appropriate
cables.
Replace the upper printer engine PCBA.
Go to
"Upper printer engine PCBA removal" on
page
4-187.
Perform a print test.
Does the problem remain?
Check
"Transfer belt
4-175.
4-102.
Yes
No
Go to step 4.
Replace the
appropriate PC
cartridge or
connector.
Replace the
Go to step 5.
appropriate
printhead. Go to
"LED printhead
removal" on
page
4-102.
Replace the
Go to step 6.
fuser assembly.
Go to
"Fuser
assembly
removal" on
page
4-84.
Go to step 7.
Replace the 2nd
transfer roller.
Go to
"2nd
transfer roller
removal" on
page
4-28.
Go to step 8.
Problem
resolved
Go to step 9.
Problem
resolved
Replace the RIP
Problem
card PCBA.
resolved
Go to
"RIP
PCBA removal"
on page
4-150.
Diagnostic information
7558-xxx
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