Lexmark T62X, Service Manual

Page: 93 / 430

Diagnostic Information
2-65
4069-5XX/7XX
Cold Fuser Service Check
Error codes 920, 921, and 922 may display for a cold fuser failure. A
920 error caused by low line voltage can sometimes be cleared by
turning the machine off and then on again. A 925 service error
indicates the wrong fuser lamp is installed in the printer and does not
match the one stored in the printer code.
Note: If the correct lamp is installed and you still have 925 fuser
errors, try the following:
1. The fuser may have reached standby temperature too quickly.
Check the fuser assembly, system board or LVPS.
2. Ensure that the correct hot roll is installed.
3. Check the AC line voltage to ensure it is not above the
maximum rating for the printer.
Note: Make sure the fuser is correctly installed before proceeding
with this service check. The fuser must be firmly seated in the two
rear connectors. Both the right and left lock down screws must be
tight.
Service Tip: Set the Fuser Temperature to NORMAL before starting
this service check.
2 Fan Assembly
System Board Check to make sure the auxiliary fan
cable is seated on connector J6 on
the system board. If correct, check
for +24 V dc on J6-1 on the system
board. If incorrect, replace the
system board. If correct, replace the
cartridge fan.
Note: When the printer is in warm-
up the voltage at J6-1 measures
approxi12 V dc. When the
printer is running, the voltage
measures approxi24 V dc.
FRU Action