Epson AcuLaser C2900N Service Manual page 102

Chapter 1 Troubleshooting
FIP-1.42 077-215: IOT Duplexer Failure (Duplex Model only)
Step
Possible causative parts:
HARN ASSY DUP RELAY (PL1.2.13)
PWBA MCU (PL8.2.13)
HARNESS ASSY DUP (PL11.1.14)
FEEDER ASSY DUP SFP STD (PL11.1.1)
HARN ASSY OPTION (PL3.1.20)
Checking the Option Duplex for installation.
1
Is the Option Duplex installed correctly?
Does the error still occur when the power is turned OFF
2
and ON?
Checking the connectors for connection.
Check the connections between the PWBA DUP and
3
PWBA MCU.
Are P/J27, P/J271,P/J272 and P/J 601 connected surely?
Does the error still occur when the power is turned OFF
4
and ON?
Checking the HARNESS ASSY DUP for continuity.
Disconnect P/J601 from the PWBA DUP.
5
Disconnect P/J272 from the HARNE ASSY DUP.
Is each cable of P/J601 <=> P/J272 continuous?
Checking the HARN ASSY DUP RELAY for continuity.
Disconnect P/J271 from the HARNESS ASSY DUP.
6
Disconnect P/J 272 from the HARN ASSY OPTION.
Is each cable of P/J271<=> P/J272 continuous?
Checking the HARN ASSY OPTION for continuity.
Disconnect P/J27 from the PWBA MCU.
7
Disconnect P/J 271 from the HARN ASSY DUP RELAY.
Is each cable of P/J27<=> P/J271 continuous?
Checking after replacing the FEEDER ASSY DUP SFP
STD.
Replace the FEEDER ASSY DUP SFP STD. (Refer to
8
RRP9.1.)
Does the error still occur when the power is turned OFF
and ON?
Epson AcuLaser C2900N
Check
1 - 89
Remedy
Yes
Reseat the Option
Go to step 3. Duplex, then go to
step 2.
Go to step 3. End of work.
Reconnect the
connector(s) P/
J27, P/J271,P/
Go to step 5.
J272 and/or P/J
601 surely, then
go to step 4.
Go to step 5. End of work
Replace the
Go to step 6. HARNESS ASSY
DUP.
Replace the
HARN ASSY DUP
Go to step 7. RELAY.
(Refer to
RRP1.12.)
Replace the
Go to step 8. HARN ASSY
OPTION.
Replace the
PWBA MCU. End of work.
(Refer to RRP8.9.)
Revision B
No
Confidential