Fuser Service Check - Lexmark Optra T 4069 series Service Manual

4069-XXX
FRU
3 Error Code 927 (Fan runs)
4 Error Code 927
(Fan not running)

Fuser Service Check

Hot Roll Fuser
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: 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.
Action
Check the voltage at J1-1 on the
engine board. The voltage measures
+5 V dc (static) 0 V dc (fan running).
If incorrect, replace the main fan. If
this does not fix the problem, replace
the engine board.
Check the voltage at J1-3 on the
engine board. The voltages are as
follows:
+22 V dc to +24 V dc
(printer and fan running)
+12 V dc to +15 V dc
(printer not running - fan running
about half speed).
If incorrect, replace the engine
board. If this does not fix the
problem, replace the main fan.
Diagnostic Information
2-47