Multiple Led Printhead Communication Failure - Lexmark X95x series Service Manual

Step Action and questions
Check the LED printhead for
2
proper connections.
Is the above component
properly connected?
Replace the printhead flat data
3
cable
Does the error remain?
Replace the printhead interface
4
contact.
Does the error remain?
Check the PC/developer drive
5
motor assembly.
Is the above component
properly installed?
POR the machine.
6
Does the error continue?
POR the machine.
7
Does the error continue?

115.11 Multiple LED printhead communication failure

Step Action and questions
Check the LED printhead for
1
proper installation.
Is the LED Printhead properly
installed?
Replace the printhead flat data
2
cable
Does the error remain?
Replace the printhead interface
3
contact.
Does the error remain?
POR the machine.
4
Does the error continue?
Yes
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.
Replace the lower engine PCBA.
Go to
"Lower engine PCBA
removal" on page 4-104.
Go to step 7.
Replace the upper printer engine
PCBA.
Go to
"Upper printer engine
PCBA removal" on page 4-186.
Yes
Go to step 2.
Go to step 3.
Go to step 4.
Replace the lower engine PCBA.
Go to
"Lower engine PCBA
removal" on page 4-104.
Go to step 5.
7558-xxx
No
Replace the connections.
Problem resolved
Problem resolved
Replace connections and
re-install the PC/developer drive
motor assembly.
Problem resolved
Problem resolved
No
Install the LED printhead
properly.
Problem resolved
Problem resolved
Problem resolved
Diagnostic information
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