Lower Engine Pcba Fuse 9 Blown; Lower Engine Pcba Fuse 10 Blown; Lower Engine Pcba Fuse 11 Blown - Lexmark C950 Service Manual

5058-030

191.13 Lower engine PCBA fuse 9 blown

Step Action and questions
Warning: Remove the cause of
1
blown fuse before replacing the
lower engine PCBA.
Check the toner dispense motor
(Y, M, C, K) for overcurrent and
overvoltage.
Are the current and voltage
values normal?
POR the machine.
2
Does the error continue?

191.14 Lower engine PCBA fuse 10 blown

Step Action and questions
Warning: Remove the cause of
1
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?
POR the machine.
2
Does the error continue?

191.15 Lower engine PCBA fuse 11 blown

Step Action and questions
Warning: Remove the cause of
1
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?
POR the machine.
2
Does the error continue?
Service Manual
2-80
Yes
Go to step 2.
Replace the lower engine PCBA.
Go to
"Lower engine PCBA
removal" on page 4-98.
Yes
Go to step 2.
Replace the lower engine PCBA.
Go to
"Lower engine PCBA
removal" on page 4-98.
Yes
Go to step 2.
Replace the lower engine PCBA.
Go to
"Lower engine PCBA
removal" on page 4-98.
No
Replace the faulty parts, or repair
the circuits.
Problem resolved
No
Replace the faulty parts, or repair
the circuits.
Problem resolved
No
Replace the faulty parts, or repair
the circuits.
Problem resolved
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