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Chapter 2 Troubleshooting
5
Checking the resistances of Temp. Sensor in the FUSING
UNIT.
Remove the FUSING UNIT.
Warning: Start the operation after the FUSING UNIT has
cooled down.
Check the resistances across the following pins of the
removed FUSING UNIT.
J171-5pin <=> J171-4pin
J171-6pin <=> J171-8pin
J171-6pin <=> J171-7pin
Can the resistances be measured? (The resistances are 7
k-ohm at 180 degrees C).
Go to step 6.
Warning: Start the
operation after the
FUSING UNIT has
cooled down.
Replace the
FUSING UNIT.
(Refer to REP6.1.)
After replacement,
be sure to clear
the life counter
value.
6
Checking after the PWBA LVPS.
Replace the PWBA LVPS. (Refer to REP8.9.)
Does the error still occur when the power is turned off and
on?
Replace the KIT
PWBA MCU
(Refer to
REP8.10.)
End of work.
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