Lexmark C950 - Single LED Printhead Mismatch Failure; Multiple LED Printhead Read Failure; Single LED Printhead Read Failure

2-40 Service Manual
5058-030
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115.06 Single LED printhead mismatch failure
115.07 Multiple LED printhead read failure
115.08 Single LED printhead read failure
Step Action and questions Yes No
1 Check the LED printhead.
Is the correct LED printhead
installed?
Check the LED printhead
installation and connections.
Install with the correct LED
printhead. Go to “LED printhead
removal” on page 4-105.
Step Action and questions Yes No
1 Check the LED printhead for
proper connections.
Is the above component
properly connected?
Go to step 2. Replace the connections.
2
Replace the printhead interface
contact.
Does the error remain?
Go to step 3. Problem resolved
3
POR the machine.
Does the error continue?
Replace the lower engine PCBA
card assembly.
Go to “Lower engine PCBA
removal” on page 4-98.
Go to step 4.
Problem resolved
4
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 connections.
Is the above component
properly connected?
Go to step 2. Replace the connections.
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