Upper Engine Pcba Access Failure; Upper Engine Pcba Buffer Failure; Lower Engine Pcba Fuse 14 Blown - Lexmark X95 series Service Manual

7558-xxx

191.19 Upper engine PCBA access failure

Step Action and questions
POR The machine.
1
Does the error continue?
Turn the power OFF and check
2
whether there is poor connection
between the EEPROM and the
upper engine PCBA.
Are there no problems with the
connection?

191.20 Upper engine PCBA buffer failure

Step Action and questions
POR The machine.
1
Does the error continue?
Turn the power OFF, and check
2
whether there is poor connection
between the EEPROM and the
upper engine PCBA.
Are there no problems with the
connection?

191.23 Lower engine PCBA fuse 14 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:
• Upper redrive assembly
• Lower redrive shift motor
assembly
Are the current and voltage
values normal?
POR the machine.
2
Does the error continue?
Service Manual
2-88
Yes
Go to step 2
Turn the power OFF, and replace
the upper printer engine
assembly. Go to
"Upper printer
engine PCBA removal" on
page 4-187.
Yes
Go to step 2
Turn the power OFF, and replace
the upper printer engine
assembly. Go to
"Upper printer
engine PCBA removal" on
page 4-187.
Yes
Go to step 2
Replace the lower engine PCBA.
Go to
"Lower engine PCBA
removal" on page 4-104.
No
Problem resolved
Problem resolved
No
Problem resolved
No
Replace the faulty parts, or repair
the circuits.
Problem resolved
Previous
Next
Go Back