2G4
1-4-9
6000 Broken heater lamp error
The temperature won’t rise by 1 degree
Celsius during warming up and the
heater is turned on for 5 seconds.
The temperature won’t rise by 1 degree
Celsius during printing and the heater is
turned on for 5 seconds with the duty
cycle more than 60%.
Defective fuser
thermistor.
Follow the flow chart.
Broken thermal
cutout or heater
lamp.
Defective engine/
high voltage PWB.
Code Contents
Remarks
Causes Check procedures/corrective measures
No
Yes
No
Yes
Open
(infinite)?
Open
(infinite)?
Replace the engine/high
voltage PWB.
Replace the thermal cutout
or heater lamp.
Measure resistance
between pins 1 and 2 of
the detached connector.
Measure resistance
between pins 1
and 2 of
the detached connector.
Replace the fuser
thermistor.
Detach YC1 connector
on the power source
PWB.
Detach YC7 connector on
the engine/high voltage
PWB.
Turn power switch off, and
remove power cord.
Start
See page P.1-5-10.
See page P.1-5-14.
See page P.1-5-10.
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