Epson AcuLaser C2900N Service Manual page 39

Chapter 1 Troubleshooting
FIP-1.2 010-317: IOT Fuser Unit Detached
Step
Possible causative parts:
FUSER UNIT (PL6.1.1)
HARNESS ASSY FUSING UNIT MG SFP (PL6.1.2)
PWBA MCU (PL8.2.13)
PWBA LVPS (PL8.2.1)
Checking after resetting the fuser unit
Reseat the fuser unit.
Warning: Start the operation after the fuser unit has
1
cooled down.
Does the error still occur when the power is turned OFF and
ON?
Checking the connectors for connection.
Remove the fuser unit.
Warning: Start the operation after the fuser unit has
cooled down.
Check the connections between the PWBA MCU (P/J17)
and fuser unit (P/J171).
Check the connections between the fuser unit (P/J171) and
PWBA LVPS (P/J47).
Check the connections between the PWBA LVPS (P/J501
and P/J502) and PWBA MCU (P/J14 and P/J15).
Are these connectors connected correctly?
2
Does the error still occur when the power is turned OFF and
3
ON?
Checking the HARNESS ASSY FUSING UNIT MG SFP for
continuity.
Disconnect J17 from the PWBA MCU.
4
Disconnect J47 from the PWBA LVPS.
Is each cable of J17 and J47 <=> P171 continuous?
NOTE: P171 is attached to the frame.
Epson AcuLaser C2900N
Check
1 - 26
Remedy
Yes
Go to step 2. End of work.
"Reconnect the
connector(s) P/
J17, P/J47, P/
Go to step 4. J171, P/J501, P/
J502, P/J14 and/
or P/J15 correctly,
then go to step 3."
Go to step 4. End of work.
Replace the
HARNESS ASSY
Go to step 5.
FUSING UNIT MG
SFP.
Revision B
No
Confidential