Fuser Thermistor Service Check; Fuser Assembly Service Check - Lexmark X500n Service Manual

7100-XXX

Fuser thermistor service check

Step
1 Remove and reinstall fuser assembly. See
"Fuser assembly removal" on page
Does error clear?
2 Check fuser connector for damage. Replace
if necessary. Does error clear?
3 Turn printer off, and check cable that
connects engine controller board connector
FUCN to fuser for proper connection,
continuity, and pin shorts. Is cable okay?
4 Replace fuser assembly. See
assembly removal" on page
error clear?
Note: Fuser is a customer order supply.

Fuser assembly service check

Step
1 Check for proper input line voltage. Is line
voltage correct?
2 Remove and reinstall fuser assembly. See
"Fuser assembly removal" on page
Does error clear?
3 Check fuser connector for damage. Replace
if necessary. Does error clear?
4 Turn printer off, and check cable that
connects engine controller board connector
FUCN to fuser for proper connection,
continuity, and pin shorts. Is cable okay?
5 Replace fuser assembly. See
assembly removal" on page
error clear?
Note: Fuser is a customer-ordered supply.
2-24
Service Manual
Questions / actions
"Fuser
4-6. Does
Questions / actions
"Fuser
4-6. Does
Yes
Problem solved.
4-6.
Problem solved.
Go to step 4.
Problem solved.
Yes
Go to step 2.
Problem solved.
4-6.
Problem solved.
Go to step 5.
Problem solved.
No
Go to step 2.
Go to step 3.
Properly connect cable or
replace if damaged. If error
clears, problem solved,
otherwise go to step 4.
Replace engine controller
board. See "Engine
controller board removal"
on page 4-34.
No
Provide proper line voltage.
Go to step 3.
Go to step 4.
Properly connect cable or
replace if damaged. If error
clears, problem solved,
otherwise go to step 5.
Replace LVPS. See "Low
voltage power supply
(LVPS) with cage
removal" on page 4-40. If
error does not clear,
replace engine controller
board. See "Engine
controller board removal"
on page 4-34.