Lower Engine Pcba Fuse 7 Blown; Lower Engine Pcba Fuse 8 Blown - Lexmark C950 Service Manual

Step Action and questions
POR the machine.
2
Does the error continue?

191.11 Lower engine PCBA fuse 7 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 cooling fan
• LVPS cooling fan
• Rear left exhaust fan
• Rear upper cooling fan
• Front right cooling fan
Are the current and voltage
values normal?
POR the machine.
2
Does the error continue?

191.12 Lower engine PCBA fuse 8 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:
• MPF tray feeder motor.
• Upper redrive motor.
• Duplex motor.
Are the current and voltage
values normal?
POR the machine.
2
Does the error continue?
Yes
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.
5058-030
No
Problem resolved
No
Replace the faulty parts, or repair
the circuits.
Problem resolved
No
Replace the faulty parts, or repair
the circuits.
Problem resolved
Diagnostic information
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