Lexmark C950 Service Manual page 274

5058-030
Step
Check the toner dispense motor assembly for proper
4
operation.
Replace the toner dispense motor.
Go to
page
Does the problem remain?
Check the LED printhead assembly installation.
5
Install the LED printhead assembly properly, and
perform a print test. Go to
page
Does the problem remain?
Check the LED printhead assembly for connection.
6
Is the above component properly connected?
Check the developer HVPS PCBA for proper
7
connectivity. Disconnect and reconnect all appropriate
cables.
Replace the developer HVPS PCBA.
Go to
page
Perform a print test. Go to
page
Does the problem remain?
Check the transfer roll HVPS PCBA for proper
8
connectivity. Disconnect and reconnect all appropriate
cables.
Replace the transfer roll HVPS PCBA.
Go to
page
Perform a print test. Go to
page
Does the problem remain?
Replace the LED printhead assembly.
9
Go to
Does the problem remain?
Check the upper printer engine PCBA for proper
10
connectivity. Disconnect and reconnect all appropriate
cables.
Replace the upper printer engine PCBA.
Go to
page
Perform a print test. Go to
page
Does the problem remain?
Service Manual
2-226
Check
"Toner dispense motor removal" on
4-163.
"PRINT TESTS" on
3-22.
"Developer HVPS PCBA removal" on
4-69.
"PRINT TESTS" on
3-22.
"Transfer roll HVPS PCBA removal" on
4-175.
"PRINT TESTS" on
3-22.
"LED printhead removal" on page
"Upper printer engine PCBA removal" on
4-181.
"PRINT TESTS" on
3-22.
Yes
Go to step 5.
Go to step 6.
Go to step 7.
Go to step 8.
Go to step 9.
Go to step 10.
4-96.
Replace the RIP
PCBA.
Go to
"RIP
PCBA removal"
on page 4-144.
Previous
No
Problem
resolved
Go Back
Problem
resolved
Replace the
connection.
Problem
resolved
Problem
resolved
Problem
resolved
Problem
resolved
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