Lexmark C950 - Multiple LED Printhead Communication Failure

2-42 Service Manual
5058-030
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115.11 Multiple LED printhead communication failure
4
Replace the printhead interface
contact.
Does the error remain?
Go to step 5. Problem resolved
5
Check the PC/developer drive
motor assembly.
Is the above component
properly installed?
Go to step 6. Replace connections and
re-install the PC/developer drive
motor assembly.
6
POR the machine.
Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA
removal” on page 4-98.
Go to step 7.
Problem resolved
7
POR the machine.
Does the error continue?
Replace the upper printer engine
PCBA.
Go to “Upper printer engine
PCBA removal” on page 4-181.
Problem resolved
Step Action and questions Yes No
1 Check the LED printhead for
proper installation.
Is the LED Printhead properly
installed?
Go to step 2. Install the LED printhead
properly.
2
Replace the printhead flat data
cable
Does the error remain?
Go to step 3. Problem resolved
3
Replace the printhead interface
contact.
Does the error remain?
Go to step 4. Problem resolved
4
POR the machine.
Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA
removal” on page 4-98.
Go to step 5.
Problem resolved
5
POR the machine.
Does the error continue?
Replace the upper printer engine
PCBA.
Go to “Upper printer engine
PCBA removal” on page 4-181.
Problem resolved
Step Action and questions Yes No