Lexmark C 950 Service Manual

Diagnostic information 2-61
  5058-030
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132.04 ATC sensor (C) failure
7Check the developer motor for 
proper connection.
 Is the above component 
properly connected?
Replace the PC/developer drive 
motor. 
Go to “PC/developer drive motor removal” on page 4-135.
Replace the connection.
8POR the machine.
 Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA removal” on page 4-101.
Go to step 9.
Problem resolved
9POR the machine.
 Does the error continue?...

2-62  Service Manual 5058-030  
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137.01 Upper printer engine PCBA communication error
5Check the toner dispense motor 
for proper connection.
 Is the above component 
properly connected?
Replace the toner dispense 
motor. 
Go to “Toner dispense motor removal” on page 4-166.
Replace the connections.
6Check the developer motor for 
proper operation.
When performing motor tests, ensure 
that all cover and 
door interlock 
switches are 
overridden.
1. Enter the Diagnostics Menu.
2. Touch...

Diagnostic information 2-63
  5058-030
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140.01 Registration drive motor failure 
141.01 Drum drive motor (K) failure 
StepAction and questionsYesNo
1Check the registration drive 
motor for proper operation.
When performing motor tests, ensure 
that all cover and 
door interlock 
switches are 
overridden.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch PRINTER MOTOR 
TESTS.
4. Touch Registration motor.
 Does the above component 
operate properly (motor 
rotating)?
Go to...

2-64  Service Manual 5058-030  
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141.02 Drum drive motor (Y/M/C) failure
2Check the drum motor for proper 
connection.
 Is the above component 
properly connected?
Replace the PC/developer drive 
motor. Go to “PC/developer drive motor removal” on page 4-135.
Replace the connections.
3POR the machine.
 Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA removal” on page 4-101.
Go to step 4.
Problem resolved
4POR the machine.
 Does the error continue?...

Diagnostic information 2-65
  5058-030
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146.xx Tray 1 lift motor failure
StepAction and questionsYesNo
1Check the sensor (tray 1 media 
level) on the tray 1 media feeder.
Is the sensor properly 
attached?
Go to step 2.Reattach the sensor.
2Check the sensor for proper 
operation. 
Navigate to: Diagnostics Menu > 
SENSOR TESTS >  PRINTER SENSOR TESTS > Sensor (tray 1 media level)
Does the display on the 
operator panel change every 
time the sensing area of the 
sensor is interrupted...

2-66  Service Manual 5058-030  
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151.01 Transfer belt motor failure
151.02 First transfer contact/retract failure
StepAction and questionsYesNo
1Check the transfer belt motor for 
proper operation.
When performing motor tests, ensure 
that all cover and 
door interlock 
switches are 
overridden.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch PRINTER MOTOR 
TESTS.
4. Touch Transfer belt motor.
 Does the above component 
operate properly (motor 
rotating)?
Go to step...

Diagnostic information 2-67
  5058-030
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151.03 Second transfer contact/retract failure
2Check the sensor (1st transfer 
rolls retract HP) for proper 
connection.
 Is the above component 
properly connected?
Replace the 1st transfer retract 
clutch assembly. 
Go to “1st transfer retract clutch assembly removal” on page 4-22.
Replace the connections.
3Check the 1st BTR retract motor 
for proper operation.
When performing motor tests, ensure 
that all cover and 
door interlock 
switches...

2-68  Service Manual 5058-030  
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154.01 Developer (Y/M/C) motor failure
2Check the sensor (2nd transfer 
roll retract HP) for proper 
connection.
 Is the above component 
properly connected?
Replace the printer left duplex 
door assembly. Go to “Printer left duplex door assembly removal” on page 4-139.
Replace the connections.
3Check the 2nd transfer roller 
retract motor for proper 
operation.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch PRINTER MOTOR 
TESTS.
4....

Diagnostic information 2-69
  5058-030
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155.01 Toner dispense motor (K) failure
2Check the developer motor for 
proper connection.
 Is the above component 
properly connected?
Replace the PC/developer drive 
motor. Go to “PC/developer drive motor removal” on page 4-135.
Replace the connections.
3POR the machine.
 Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA removal” on page 4-101.
Go to step 4.
Problem resolved
4POR the machine.
 Does the error...

2-70  Service Manual 5058-030  
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156.01 Toner dispense motor (C) failure
157.01 Toner dispense motor (M) failure
StepAction and questionsYesNo
1Replace the toner cartridge.
 Does the error remain?
Go to step 2.Problem resolved
2Check the toner smart chip PCB.
 Is the above component 
properly connected?
Go to step 3.Replace the connections.
3Check the toner dispense motor 
for proper operation.
When performing motor tests, ensure 
that all cover and 
door interlock 
switches are...