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Diagnostic Information 2-19
4044-XXX
The fuser lamp does not light
FRU Action
Model E310
Fuser Lamp
Lamp Cable
Thermistor
LVPS
Turn the printer off and disconnect
the fuser lamp wires from the fuser.
Check for continuity across the fuser
lamp wire contacts. If there is
continuity, go to step 1: Continuity.
If there is no continuity, go to
step 2: No Continuity.
Step 1: Continuity
Measure the voltage at connector
CN202 on the LVPS. It should match
the line voltage. If it does not,
replace the LVPS. If line voltage is
present, check the fuser lamp cable
for continuity. Replace if
defective.Make sure the fuser
thermistor is correctly connected to
CN1 on the LVPS. If the problem
persists, disconnect the thermistor
cable from CN1 on the LVPS board
and measure the voltage between
CN1-1 and ground. The voltage
measures approximately 3.9 V dc. If
the voltage is incorrect, replace the
LVPS. If correct, replace the
thermistor.
Step 2: No Continuity
Check the thermal fuse for continuity.
If incorrect, replace the thermal fuse.
If correct, replace the lamp.