Upper Engine Pcba Fuse 5 Blown; Lower Engine Pcba Fuse 6 Blown; Lower Engine Pcba Fuse 7 Blown - Lexmark X95x series Service Manual

7558-xxx

191.09 Upper engine PCBA fuse 5 blown

Step Action and questions
Warning: Remove the cause of
1
blown fuse before replacing the
lower engine PCBA.
Check the finisher circuit for
overcurrent and overvoltage.
Are the current and voltage
values normal?
POR the machine.
2
Does the error continue?

191.10 Lower engine PCBA fuse 6 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:
• Media transport/MPF drive
motor
• Media feed lift motor
• Fuser pressure roll retract
motor
• Waste toner agitator motor
Are the current and voltage
values normal?
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?
Service Manual
2-84
Yes
Go to step 2.
Replace the lower engine PCBA.
Go to
"Lower engine PCBA
removal" on page 4-104.
Yes
Go to step 2.
Replace the lower engine PCBA.
Go to
"Lower engine PCBA
removal" on page 4-104.
Yes
Go to step 2.
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.
Previous
Next
Go Back