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2-50 Service Manual
4069-XXX
Fuser Solenoid Service Check
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
“Fuser Solenoid Adjustment” on
page 4-3
.
FRU Action
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.