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Step
Check the LED beam route.
6
Check for debris between the LED printhead assembly
and the PC drum.
Check the four LED printhead assembly windows for
contamination.
Perform the printhead cleaning operation.
Is the LED beam route free of debris and the glass
window, in the LED printhead assembly, free of
contamination?
Check the toner dispense motor assembly for proper
7
operation.
Replace the toner dispense motor assembly.
Go to
"Toner dispense motor removal" on
page
4-170.
Does the problem remain?
Check the developer HVPS PCBA for proper
8
connectivity. Disconnect and reconnect all appropriate
cables.
Replace the developer HVPS PCBA.
Go to
"Developer HVPS PCBA removal" on
page
4-75.
Perform a print test.
Does the problem remain?
Check the transfer roll HVPS PCBA for proper
9
connectivity. Disconnect and reconnect all appropriate
cables.
Replace the transfer roll HVPS PCBA.
Go to
"Transfer roll HVPS PCBA removal" on
page
4-181.
Perform a print test.
Does the problem remain?
Check the upper printer engine PCBA for proper
10
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?
Replace the RIP card PCBA.
11
Go to
"RIP PCBA removal" on page
Does the problem remain?
Check
4-150.
Yes
No
Go to step 7.
Remove debris
or clean the LED
printhead
assembly
window.
Go to step 8.
Problem
resolved
Go to step 9.
Problem
resolved
Go to step 10.
Problem
resolved
Go to step 11.
Problem
resolved
Go to step 12.
Problem
resolved
Diagnostic information
7558-xxx
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