Epson AcuLaser C2900N, Service Manual

Page: 118 / 681

1 - 105
Chapter 1 Troubleshooting
Epson AcuLaser C2900N
Revision B
Confidential
FIP-1.53 091-972: IOT PHD Detached
Step Check
Remedy
Yes No
Possible causative parts:
DRUM CARTRIDGE (PL4.1.21)
PWBA MCU (PL8.2.13)
HARN ASSY PHD XPRO (PL9.1.11)
1
Checking after resetting the DRUM CARTRIDGE.
Reseat the DRUM CARTRIDGE.
Does the error still occur when the power is turned OFF and
ON?
Go to step 2. End of work.
2
Checking the connectors for connection.
Check the connectors between the PWBA MCU and DRUM
CARTRIDGE.
Are P/J42 and P/J422 connected correctly?
Go to step 4.
Reconnect the
connector(s) P/
J42 and/or P/J422
surly, then go to
step 3.
3
Does the error still occur when the power is turned OFF and
ON?
Go to step 4. End of work.
4
Checking the HARN ASSY PHD XPRO for continuity.
Disconnect P422 from the DRUM CARTRIDGE.
Disconnect J42 from the PWBA MCU.
Is each cable of P422 <=> J42 continuous?
Go to step 5.
Replace the
HARN ASSY PHD
XPRO.
5
Checking after replacing the DRUM CARTRIDGE.
Replace the DRUM CARTRIDGE. (Refer to RRP4.6.)
CAUTION: Be sure to pull eight sealing tapes out from a
new DRUM CARTRIDGE before installation.
Does the error still occur when the power is turned OFF and
ON?
Replace the
PWBA MCU.
(Refer to RRP8.9.)
End of work.