Lexmark C 950 Service Manual

							Diagnostic information 2-81
  5058-030
Go Back Previous
Next
191.14 Lower engine PCBA fuse 10 blown
191.15 Lower engine PCBA fuse 11 blown
191.16 Lower engine PCBA fuse 12 blown
StepAction and questionsYesNo
1Warning: Remove the cause of 
blown fuse before replacing the 
lower engine PCBA.
Check the following parts circuits 
for overcurrent and overvoltage:
• 2nd transfer roller contact 
retract motor
• Printer left duplex door 
assembly
 Are the current and voltage 
values normal?
Go to step 2.Replace the faulty parts, or repair 
the circuits.
2POR the machine.
 Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA removal” on page 4-101.
Problem resolved
StepAction and questionsYesNo
1Warning: Remove the cause of 
blown fuse before replacing the 
lower engine PCBA.
Check the following parts circuits 
for overcurrent and overvoltage:
•Fuser motor 
• Registration drive motor 
 Are the current and voltage 
values normal?
Go to step 2.Replace the faulty parts, or repair 
the circuits.
2POR the machine.
 Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA removal” on page 4-101.
Problem resolved
StepAction and questionsYesNo
1Warning: Remove the cause of 
blown fuse before replacing the 
lower engine PCBA.
Check the following parts circuits 
for overcurrent and overvoltage:
• PC/Developer drive motor 
• Fuser motor assembly 
 Are the current and voltage 
values normal?
Go to step 2.Replace the faulty parts, or repair 
the circuits. 
						

							2-82  Service Manual 5058-030  
Go Back Previous
Next
191.17 Lower engine PCBA fuse 13 blown
191.18 Upper engine PCBA data failure
191.19 Upper engine PCBA access failure
2POR the machine.
 Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA removal” on page 4-101.
Problem resolved
StepAction and questionsYesNo
1Warning: Remove the cause of 
blown fuse before replacing the 
lower engine PCBA.
Check the PC/Developer drive 
motor (Y,M,C) circuits for 
overcurrent and overvoltage:
 Are the current and voltage 
values normal?
Go to step 2.Replace the faulty parts, or repair 
the circuits.
2POR the machine.
 Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA removal” on page 4-101.
Problem resolved
StepAction and questionsYesNo
1POR The machine.
 Does the error continue?
Go to step 2Problem resolved
2Install the correct version of the 
firmware.
 Does the problem persist?
Turn the power OFF, and replace 
the upper printer engine PCBA. 
Go to 
“Upper printer engine PCBA removal” on page 4-184.
Problem resolved
StepAction and questionsYesNo
1POR The machine.
 Does the error continue?
Go to step 2Problem resolved
2Turn the power OFF and check 
whether there is poor connection 
between the EEPROM and the 
upper engine PCBA.
 Are there no problems with the 
connection?
Turn the power OFF, and replace 
the upper printer engine 
assembly. Go to 
“Upper printer engine PCBA removal” on page 4-184.
Problem resolved
Step Action and questions Yes No 
						

							Diagnostic information 2-83
  5058-030
Go Back Previous
Next
191.20  Upper engine PCBA buffer failure
191.23 Lower engine PCBA fuse 14 blown
191.24 Lower engine PCBA fuse 15 blown
StepAction and questionsYesNo
1POR The machine.
 Does the error continue?
Go to step 2Problem resolved
2Turn the power OFF, and check 
whether there is poor connection 
between the EEPROM and the 
upper engine PCBA.
 Are there no problems with the 
connection?
Turn the power OFF, and replace 
the upper printer engine 
assembly. Go to 
“Upper printer engine PCBA removal” on page 4-184.
StepAction and questionsYesNo
1Warning: Remove the cause of 
blown fuse before replacing the 
lower engine PCBA.
Check the following parts circuits 
for overcurrent and overvoltage:
• Upper redrive assembly
• Lower redrive shift motor 
assembly 
 Are the current and voltage 
values normal?
Go to step 2Replace the faulty parts, or repair 
the circuits.
2POR the machine.
 Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA removal” on page 4-101.
Problem resolved
StepAction and questionsYesNo
1Warning: Remove the cause of 
blown fuse before replacing the 
lower engine PCBA.
Check the upper redrive 
assembly circuits for overcurrent 
and overvoltage:
 Are the current and voltage 
values normal?
Go to step 2Replace the faulty parts, or repair 
the circuits.
2POR the machine.
 Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA removal” on page 4-101.
Problem resolved 
						

							2-84  Service Manual 5058-030  
Go Back Previous
Next
191.25 Lower engine PCBA fuse 16 blown
200.01 Sensor (registration) static jam 
StepAction and questionsYesNo
1Warning: Remove the cause of 
blown fuse before replacing the 
lower engine PCBA.
Check the registration/transport 
roller assembly.
 Are the current and voltage 
values normal?
Go to step 2Replace the faulty part or repair 
the circuits.
2POR the machine.
 Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA removal” on page 4-101.
Problem resolved
StepAction and questionsYesNo
1Check the media path.
 Is the media path free of any 
media fragments?
Go to step 2.Remove any media or media 
fragments.
2Check the sensor (registration) 
for proper operation.
1. Enter the Diagnostics Menu.
2. Touch SENSOR TESTS.
3. Touch PRINTER SENSOR 
TESTS.
4. Touch Sensor (registration).
 Does the display on the 
operator panel change every 
time the sensing area of the 
above sensor is interrupted or 
blocked?
Go to Step 4.Go to Step 3.
3Check the sensor (registration) 
for proper connection.
 Is the above component 
properly connected?
Replace the registration/transport 
roll assembly.
Go to “Registration/transport roller assembly removal” on page 4-146.
Replace the connections.
4Check the registration/transport 
roll assembly.
 Is the above component free of 
excess wear and 
contamination?
Go to step 5.Clean or replace the registration/
transport roll assembly.
Go to “Registration/transport roller assembly removal” on page 4-146.
5POR 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 page 4-101.
Go to step 6.
Problem resolved 
						

							Diagnostic information 2-85
  5058-030
Go Back Previous
Next
200.03 Sensor (registration) late jam (feeding from the tray)
6POR 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.
Problem resolved
StepAction and questionsYesNo
1Check the media path.
 Is the media path free of any 
media fragments?
Go to step 2.Remove any media or media 
fragments.
2Check the sensor (registration) 
for proper operation.
1. Enter the Diagnostics Menu.
2. Touch SENSOR TESTS.
3. Touch PRINTER SENSOR 
TESTS.
4. Touch Sensor (registration).
 Does the display on the 
operator panel change every 
time the sensing area of the 
above sensor is interrupted or 
blocked?
Go to step 4.Go to step 3.
3Check the sensor (registration) 
for proper connection.
 Is the above component 
properly connected?
Replace the registration/transport 
roll assembly.
Go to “Registration/transport roller assembly removal” on page 4-146.
Replace the connections.
4Check 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?
Go to step 6.Go to step 5.
5Check the registration motor for 
proper connection.
 Is the above component 
properly connected?
Replace the registration drive 
motor. 
Go to “Registration drive motor removal” on page 4-144.
Replace the connection.
Step Action and questions Yes No 
						

							2-86  Service Manual 5058-030  
Go Back Previous
Next
200.03 Sensor (registration) late jam (feeding from the MPF)
6Check the media transport/MPF 
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 Tray [x] feed/lift 
motor (pick)
5. Touch Tray [x] feed/lift 
motor (feed).
 Does the above component 
operate properly?
Go to step 8.Go to step 7.
7Check the tray feed/lift motor for 
proper connection.
 Is the above component 
properly connected?
Replace the media feed lift motor. 
Go to “Media feed lift motor removal” on page 4-118.
Replace the connection.
8POR 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 page 4-101.
Problem resolved
9POR 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.
Problem resolved
StepAction and questionsYesNo
1Check the media path.
 Is the media path free of any 
media fragments?
Go to step 2.Remove any media or media 
fragments.
Step Action and questions Yes No 
						

							Diagnostic information 2-87
  5058-030
Go Back Previous
Next
2Check the Sensor (registration) 
for proper operation.
1. Enter the Diagnostics Menu.
2. Touch SENSOR TESTS.
3. Touch PRINTER SENSOR 
TESTS.
4. Touch Sensor (registration).
 Does the display on the 
operator panel change every 
time the sensing area of the 
above sensor is interrupted or 
blocked?
Go to step 4.Go to step 3.
3Check the sensor (registration) 
for proper connection.
 Is the above component 
properly connected?
Replace the registration/transport 
roll assembly.
Go to “Registration/transport roller assembly removal” on page 4-146.
Replace the connections.
4Check the registration drive 
motor for proper operation.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch PRINTER MOTOR 
TESTS.
4. Touch Registration motor.
Does the above component 
operate properly?
Go to step 6.Go to step 5.
5Check the registration drive 
motor for proper connection.
 Is the above component 
properly connected?
Replace the registration drive 
motor. 
Go to “Registration drive motor removal” on page 4-144.
Replace the connection.
6Check the media transport/MPF 
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 MPF feed/lift motor 
(pick)
5. Touch MPF feed/lift motor 
(feed).
 Does the above component 
operate properly?
Go to step 8.Go to step 7.
Step Action and questions Yes No 
						

							2-88  Service Manual 5058-030  
Go Back Previous
Next
200.05/200.55 Sensor (registration) lag jam
7Check the MPF feed/lift motor for 
proper connection.
 Is the above component 
properly connected?
Replace the media transport/MPF 
drive motor. 
Go to “Media transport/MPF drive motor removal” on page 4-121.
Replace the connection.
8POR 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 page 4-101.
Problem resolved
9POR 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.
Problem resolved
StepAction and questionsYesNo
1Check the media path.
 Is the media path free of any 
media fragments?
Go to step 2.Remove any media or media 
fragments.
2Check the registration/transport 
roller assembly.
 Is the above component free of 
excess wear and 
contamination?
Go to step 3.Clean or replace the registration/
transport roller assembly.
Go to “Registration/transport roller assembly removal” on page 4-146.
3Check the 2nd transfer roller.
 Is the above component free of 
excess wear and 
contamination?
Go to step 4.Clean or replace the 2nd transfer 
roller.
Go to “2nd transfer roller removal” on page 4-24.
4Check the sensor (registration) 
for proper operation.
1. Enter the Diagnostics Menu.
2. Touch SENSOR TESTS.
3. Touch PRINTER SENSOR 
TESTS.
4. Touch Sensor (registration).
 Does the display on the 
operator panel change every 
time the sensing area of the 
above sensor is interrupted or 
blocked?
Go to Step 6.Go to Step 5.
Step Action and questions Yes No 
						

							Diagnostic information 2-89
  5058-030
Go Back Previous
Next
5Check the sensor (registration) 
for proper connection.
 Is the above component 
properly connected?
Replace the media transport/
MPF drive motor assembly. 
Go to “Media transport/MPF drive motor removal” on page 4-121.
Replace the connections.
6Check the fuser motor for proper 
operation.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch PRINTER MOTOR 
TESTS.
4. Touch Fuser/lower redrive/
1st transfer retract motor.
 Does the above component 
operate properly?
Go to step 8.Go to step 7.
7Check the fuser motor for proper 
connection.
 Is the above component 
properly connected?
Replace the fuser motor. 
Go to “Fuser/lower redrive/1st BTR retract motor removal” on page 4-94.
Replace the connections.
8Check the Media Transport/MPF 
drive motor assembly 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 Media Transport/MPF 
drive motor.
 Does the above component 
operate properly?
Go to step 10.Go to step 9.
9Check the media transport/MPF 
drive motor assembly for proper 
connection.
 Is the above component 
properly connected?
Replace the media transport/
MPF drive motor assembly. 
Go to “Media transport/MPF drive motor removal” on page 4-121.
Replace the connection.
10POR the machine.
 Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA removal” on page 4-101.
Problem resolved
Step Action and questions Yes No 
						

							2-90  Service Manual 5058-030  
Go Back Previous
Next
200.53 Sensor (registration) late jam (80K interval exceeded for feed rollers)
StepAction and questionsYesNo
1Check the media path.
 Is the media path free of any 
media fragments?
Go to step 2.Remove any media or media 
fragments.
2Replace the pick/feed rollers. Go 
to “Pick roller removal” on page 4-138.
 Does the jam continue?
Go to step 3.Problem resolved
3Check the sensor (registration) 
for proper operation.
1. Enter the Diagnostics Menu.
2. Touch SENSOR TESTS.
3. Touch PRINTER SENSOR 
TESTS.
4. Touch Sensor (registration).
 Does the display on the 
operator panel change every 
time the sensing area of the 
above sensor is interrupted or 
blocked?
Go to Step 5.Go to step 4.
4Check the sensor (registration) 
for proper connection.
 Is the above component 
properly connected?
Replace the media transport/MPF 
drive motor. 
Go to “Media transport/MPF drive motor removal” on page 4-121.
Replace the connections.
5Check 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?
Go to step 7.Go to step 6.
6Check the registration drive motor 
for proper connection.
 Is the above component 
properly connected?
Replace the registration drive 
motor. 
Go to “Registration drive motor removal” on page 4-144.
Replace the connection.