Lexmark 5021-0XX - Manual (Page 139)

Diagnostic information 2-61
5021-0XX
921,922,923,924,925—Fuser assembly service check
Step Questions / actions Yes No
1 Check for proper input line
voltage. Is line voltage
correct? Go to step 2. Provide proper
line voltage.
2 Remove and reinstall fuser
assembly. See
“Fuser
assembly removal” on
page 4-9
. Does error
clear?
Problem solved. Go to step 3.
3 Check fuser connector for
damage. Replace if
necessary. Does error
clear? Problem solved. Go to step 4.
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? Go to step 5. Properly connect
cable or replace
if damaged. If
error clears,
problem solved,
otherwise go to
step 5.
5 Replace fuser assembly.
See
“Fuser assembly
removal” on page 4-9 .
Does error clear?
Note: Fuser is a customer
ordered supply.
Problem solved. Replace LVPS.
See
“Low
voltage power
supply (LVPS)
with cage
removal” on
page 4-60
. If
error does not
clear, replace
engine controller
board. See
“Engine
controller
board removal”
on page 4-55
.