Epson AcuLaser C2900N, Service Manual

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Chapter 1 Troubleshooting
Epson AcuLaser C2900N
Revision B
Confidential
FIP-1.24 042-313: IOT Fan Motor Failure
Step Check
Remedy
Yes No
Possible causative parts:
FAN (PL8.1.1)
PWBA LVPS (PL8.2.1)
PWBA MCU (PL8.2.13)
HARNESS ASSY LVPS MAIN MG SFP (PL9.1.3)
1
Does the error still occur when the power is turned OFF and
ON?
Go to step 2. End of work.
2
Checking the FAN for rotation.
Does the FAN function normally?
Checked by [Digital Output] - [Main Motor or Fan Motor] in
[IOT Diag] of diagnosis.
During this check, close the COVER ASSY FRONT MG.
Replace the
PWBA MCU.
(Refer to RRP8.9.)
Go to step 3.
3
Check the connection between the FAN and the PWBA
LVPS.
Is P/J503 on the PWBA LVPS connected correctly?
Go to step 5.
Reconnect the
connector P/J 503
correctly, then go
to step 4.
4
Does the error still occur when the power is turned OFF and
ON?
Go to step 5. End of work.
5
Check the connections between the PWBA LVPS and
PWBA MCU.
Are P/J501 and P/J14 connected correctly?
Go to step 7.
Reconnect the
connector(s) P/
J501 and P/J14
correctly, then go
to step 6.
6
Does the error still occur when the power is turned OFF and
ON?
Go to step 7. End of work.
7
Checking the HARNESS ASSY LVPS MAIN MG SFP for
continuity.
Disconnect J501 from the PWBA LVPS.
Disconnect J14 from the PWBA MCU.
Is each cable of J501 <=> J14 continuous?
Go to step 8.
Replace the
HARNESS ASSY
LVPS MAIN MG
SFP.