Lexmark C 950 Service Manual

Diagnostic information 2-221
  5058-030
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951.xx RIP card assembly NVRAM failure  
953.xx Operator panel assembly NVRAM failure 
955.xx RIP card assembly NAND CRC failure  
StepAction and questionsYesNo
1Perform a POR.
 Does the error occur when the 
power is turned off/on?
Go to step 2.Perform several print tests. 
If the problem remains, then go to 
step 2.
2Turn the printer off for 60 
seconds.
 Does the error occur when the 
power is turned off/on again?
Replace the RIP card...

2-222  Service Manual 5058-030  
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956.00 RIP card assembly processor failure
956.01 RIP card assembly processor over temperature failure 
956.02 RIP card assembly cooling fan failure 
StepAction and questionsYesNo
1Perform a POR.
 Does the error occur when the 
power is turned off/on?
Go to step 2.Perform several print tests. 
If the problem remains, then go to 
step 2.
2Turn the printer off for 60 
seconds.
 Does the error occur when the 
power is turned off/on again?
Replace the...

Diagnostic information 2-223
  5058-030
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956.03 RIP card assembly FPGA failure
980.04 Duplex controller card assembly communication failure
StepAction and questionsYesNo
1Perform a POR. 
 Does the error occur when the 
power is turned off/on?
Go to step 2.Perform several print tests. 
If the problem remains, then go to 
step 2.
2Turn the printer off for 60 
seconds.
 Does the error occur when the 
power is turned off/on again?
Replace the RIP PCBA.
Go to “RIP PCBA removal” on page...

2-224  Service Manual 5058-030  
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980.05 Engine flicker communication failure   
957.01  BITZ1 initialize failure
957.02  BITZ2 initialize failure
StepAction and questionsYesNo
1Perform a POR.
 Does the error occur when the 
power is turned off/on?
Go to step 2.Perform several print tests. 
If the problem remains, then go to 
step 2.
2POR the machine, and perform a 
print test. Go to “PRINT TESTS” on page 3-22.
 Does the error continue?
Replace the upper printer engine 
PCBA.
Go to...

Diagnostic information 2-225
  5058-030
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995.00 Finisher NVM R/W failure
996.00 Finisher type failure
997.00 Duplex controller card assembly type failure
StepAction and questionsYesNo
1Turn the finisher off and on 
several times.
 Does the error still occur when 
the power is on?
Go to step 2.Problem resolved
2Check the finisher PCBA for 
connection.
 Are the connections of the 
finisher controller card 
assembly properly connected?
Replace the finisher PCBA.
Go to “Finisher PCBA...

2-226  Service Manual 5058-030  
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999.00 Finisher engine/RIP functional failure
3POR the machine, and perform a 
print test. Go to “PRINT TESTS” on page 3-22.
 Does the error continue?
Replace the upper printer engine 
PCBA.
Go to “Upper printer engine PCBA removal” on page 4-184.
Go to step 4.
Problem resolved
4POR the machine, and perform a 
print test. Go to “PRINT TESTS” on page 3-22.
 Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA removal” on...

Diagnostic information 2-227
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Image quality troubleshooting
Printer-related troubleshooting
First, get a printout as a base, and then follow the symptom table to identify the possible failing FRUs. 
Image quality symptoms 
•Faint print (low contrast)— “Faint print (Low contrast)” on page 2-228.
•Blank print (no print)— “Blank print (no print)” on page 2-230.
•Solid black— “Solid black” on page 2-232.
•Vertical lines and bands (process direction)— “Vertical lines and bands...

2-228  Service Manual 5058-030  
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Image Quality 
Faint print (Low contrast) 
Before starting, check the media route for foreign objects, such as staples, clips, and scraps, in the media path. 
Step Check Yes No
1Check the media condition.
Load new, dry, recommended media, and perform a print 
test. Go to “PRINT TESTS” on page 3-22.
 
Is the image density normal?Problem solved. Go to step 2.
2Check the four toner cartridges for proper installation.
Reprint the defective image.
 
Is...

Diagnostic information 2-229
  5058-030
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6Check the LED beam route.
Check for debris between the LED printhead assembly 
and the PC drum.
Check the four LED printhead assembly windows for 
contamination.
Perform the printhead cleaning operation.
 
Is the LED beam route free of debris and the glass 
window, in the LED printhead assembly, free of 
contamination?Go to step 7. Remove debris 
or clean the LED 
printhead 
assembly 
window.
7Check the toner dispense motor assembly for...

2-230  Service Manual 5058-030  
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Blank print (no print) 
Check the media path for foreign objects such as staples, clips, scraps of media.
11Replace the RIP PCBA.
Go to “RIP PCBA removal” on page 4-147.
 
Does the problem remain?Go to step 12. Problem 
resolved
12POR the machine.
Does the problem remain?Replace the 
LED printhead.
Go to “LED 
printhead 
removal” on 
page 4-99.Problem 
resolved
Step Check Yes No
1Check the four toner cartridges for proper installation.
Reprint the...