Lexmark 4069-XXX Manual Do Utilizador

Service Manual

Service Tip: Try changing the envelope enhance level setting. A 
different setting may correct the problem.

Note:  Check the fuser envelope conditioner solenoid adjustment as 
described in the adjustment section 

1

Fuser Envelope Conditioner 
Solenoid

The operation of the fuser solenoid 
can be observed by removing the 
redrive assembly. Check for proper 
mechanical operation of the solenoid 
and associated hardware, link and so 
on. If correct, check the resistance of 
the solenoid between J4-1 and J4-2. 
The resistance measures between 5 
ohms and 10 ohms. If incorrect, 
replace the solenoid assembly.

2

Fuser Control Board

The solenoid receives power from the 
engine board. The fuser control board 
receives +42Vdc from the LVPS via 
the interconnect board. Check for 
approximately +42 V dc at the
+42 V dc test point on the fuser control 
board. If the voltage is correct, replace 
the fuser control board.

3

LVPS
Interconnect Board

If the +42 V dc test point does not 
measure approximately +42 V dc, 
check the voltage at CN3-18 on the 
LVPS. The voltage measures 
approximately
+42 V dc. If the voltage is correct, 
replace the interconnect board 
assembly. If the voltage is incorrect, 
replace the LVPS.

4

Fuser DC Cable (Engine 
Board to Fuser Board Cable) 
Engine Board

Check for continuity of the DC fuser 
cable that is attached between J2 on 
the engine board and J1 on the fuser 
control board. If the cable does not 
measure continuity, replace the cable. 
If the cable measures continuity, 
replace the engine board.