Epson AcuLaser C2900N Service Manual page 103

Chapter 1 Troubleshooting
FIP-1.43 077-300: IOT Cover Front Open
Step
Possible causative parts:
COVER ASSY FRONT MG (PL1.2.1)
PWBA LVPS (PL8.2.1)
HARN ASSY INTERLOCK (PL8.2.5)
PWBA MCU (PL8.2.13)
HARNESS ASSY LVPS MAIN MG SFP (PL9.1.3)
Checking the COVER ASSY FRONT MG (Front Cover) for
1 shape.
Are there any damages on the COVER ASSY FRONT MG?
Checking the COVER ASSY FRONT MG for latching.
2 Open and close the COVER ASSY FRONT MG.
Is the COVER ASSY FRONT MG latched correctly?
Checking the interlock switch for operation.
Does the number on the screen increase by one, when the
3 COVER ASSY FRONT MG is closed and opened?
Checked by [Digital Input] - [Cover Open Sensor] in [IOT
Diag] of diagnosis.
Checking the connectors for connection.
Check the connections between PWBA MCU and PWBA
LVPS.
Are P/J14 and P/J501 connected correctly?
4
Does the error still occur when the power is turned OFF and
5
ON?
Checking the HARNESS ASSY LVPS MAIN MG SFP for
continuity.
6 Disconnect J14 from the PWBA MCU.
Disconnect J501 from the PWBA LVPS.
Is each cable of J14 <=> J501 continuous?
Epson AcuLaser C2900N
Check
1 - 90
Remedy
Yes
Replace the
COVER ASSY
Go to step 2.
FRONT MG.
(Refer to RRP1.8.)
Reseat or replace
the COVER ASSY
Go to step 3.
FRONT MG.
(Refer to RRP1.8.)
Replace the
PWBA MCU. Go to step 4.
(Refer to RRP8.9.)
Reconnect the
connector(s) P/
Go to step 6. J14 and/or P/J501
correctly, then go
to step 5.
Go to step 6. End of work.
Replace the
HARNESS ASSY
Go to step 7.
LVPS MAIN MG
SFP.
Revision B
No
Confidential