4069-XXX

 

FRU

Action

 

 

 

3

Error Code 927 (Fan runs)

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.

 

 

 

4

Error Code 927

Check the voltage at J1-3 on the

 

(Fan not running)

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.

 

 

 

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.

Diagnostic Information 2-47

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Lexmark 4069-XXX manual Fuser Service Check Hot Roll Fuser, Cold Fuser Service Check