Lexmark C950 - Clock Signal Communication Error; Controller Communication Failure; IM Logic Failure

Diagnostic information 2-215
5058-030
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940.02 Clock signal communication error
940.03 Controller communication failure
940.04 IM logic failure
Step Action and questions Yes No
1 Check the upper printer engine
PCBA connections.
Are the above connections
properly connected and not
damaged?
Go to step 2. Connect the components
properly and replace damaged
connections.
2
POR the machine.
Does the error continue?
Replace the upper printer engine
PCBA.
Go to “Upper printer engine
PCBA removal” on page 4-181.
If the error remains, then go to
step 3.
Problem resolved
3
POR the machine.
Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA
removal” on page 4-106.
Problem resolved
Step Action and questions Yes No
1 Check the bridge controller PCBA
connections.
Are the above connections
properly connected and not
damaged?
Go to step 2. Connect the components
properly and replace damaged
connections.
2
Replace the bridge PCBA. Go to
“Bridge PCBA removal” on
page 4-28.
Does the error remain?
Go to step 3. Problem resolved
3
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 Install the correct firmware.
Does the problem persist?
Go to step 2. Problem resolved
2
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