Service Checks; Led Printhead (K) Failure; 111.04 Led Printhead (K) Signal Failure; Led Printhead (C) Failure - Lexmark C950 Service Manual

5058-030

Service checks

111.01 LED printhead (K) failure

Step Action and questions
Check the LED Printhead (K) for
1
proper installation.
Is the LED Printhead (K)
properly installed?
Check the event log for the
2
history of errors that occurred.
1. Enter the Diagnostics Menu.
2. Navigate to EVENT LOG.
3. Touch Display Event Log.
Has any connection-related
errors occurred?

111.02-111.04 LED printhead (K) signal failure

Step Action and questions
Check the LED printhead.
1
Is the above component
properly connected?
Replace the LED printhead.
2
Go to
"LED printhead removal"
on page 4-96.
Does the error remain?
Replace the printhead interface
3
contact.
Does the error remain?
POR the machine.
4
Does the error continue?

112.01 LED printhead (C) failure

Step Action and questions
Check the LED Printhead (C) for
1
proper installation.
Is the LED Printhead (C)
properly installed?
Service Manual
2-34
Yes
Go to step 2.
Go to step
"111.02-111.04 LED
printhead (K) signal failure" on
page 2-34.
Yes
Go to step 2.
Go to step 3.
Go to step 4.
Replace the upper printer engine
PCBA.
Go to
"Upper printer engine
PCBA removal" on page 4-181.
Yes
Go to step 2.
No
Install the LED Printhead (K)
properly.
Replace the LED Printhead (K).
Go to
"LED printhead removal"
on page 4-96.
No
Replace the connections.
Replace the printhead flat data
cable.
Problem resolved
Problem resolved
Problem resolved
No
Install the LED Printhead (C)
properly.
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