Lexmark X95 series - Lower Engine PCBA Fuse 4 Blown; Upper Engine PCBA Fuse 5 Blown; Lower Engine PCBA Fuse 6 Blown

2-84 Service Manual
7558-xxx
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191.08 Lower engine PCBA fuse 4 blown
191.09 Upper engine PCBA fuse 5 blown
191.10 Lower engine PCBA fuse 6 blown
Step Action and questions Yes No
1 Warning: Remove the cause of
blown fuse before replacing the
lower engine PCBA.
Check the following parts circuits
for overcurrent and overvoltage:
• Tray module controller PCBA
• HCF
Are the current and voltage
values normal?
Go to step 2. Replace the faulty parts, or repair
the circuits.
2
POR the machine.
Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA
removal” on page 4-104.
Problem resolved
Step Action and questions Yes No
1 Warning: Remove the cause of
blown fuse before replacing the
lower engine PCBA.
Check the finisher circuit for
overcurrent and overvoltage.
Are the current and voltage
values normal?
Go to step 2. Replace the faulty parts, or repair
the circuits.
2
POR the machine.
Does the error continue?
Replace the lower engine PCBA.
Go to “Lower engine PCBA
removal” on page 4-104.
Problem resolved
Step Action and questions Yes No
1 Warning: Remove the cause of
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?
Go to step 2. Replace the faulty parts, or repair
the circuits.