Lower Engine Pcba Fuse 12 Blown; Lower Engine Pcba Fuse 13 Blown; Upper Engine Pcba Data Failure - Lexmark X95 series Service Manual

191.16 Lower engine PCBA fuse 12 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:
• PC/Developer drive motor
• Fuser drive motor assembly
Are the current and voltage
values normal?
POR the machine.
2
Does the error continue?

191.17 Lower engine PCBA fuse 13 blown

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

191.18 Upper engine PCBA data failure

Step Action and questions
POR The machine.
1
Does the error continue?
Install the correct version of the
2
firmware.
Does the problem persist?
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
Turn the power OFF, and replace
the upper printer engine PCBA.
Go to
"Upper printer engine
PCBA removal" on page 4-187.
7558-xxx
No
Replace the faulty parts, or repair
the circuits.
Problem resolved
No
Replace the faulty parts, or repair
the circuits.
Problem resolved
No
Problem resolved
Problem resolved
Diagnostic information
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