Epson AcuLaser C2900N Service Manual page 40

Chapter 1 Troubleshooting
Step
Checking the resistances of Temp. Sensor in the fuser unit.
Remove the fuser unit.
Warning: Start the operation after the fuser unit has
cooled down.
Check the resistances across the following pins of the
removed fuser 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).
5
Checking after the PWBA LVPS.
Replace the PWBA LVPS. (Refer to RRP8.5.)
6
Does the error still occur when the power is turned off and
on?
Epson AcuLaser C2900N
Check
1 - 27
Remedy
Yes
Warning: Start the
operation after the
fuser unit has
cooled down.
Replace the fuser
Go to step 6.
unit. (Refer to
RRP6.1.) After
replacement, be
sure to clear the
life counter value.
Replace the
PWBA MCU. End of work.
(Refer to RRP8.9.)
Revision B
No
Confidential