Epson AcuLaser C2900N Service Manual page 115

Chapter 1 Troubleshooting
FIP-1.50 091-916: IOT PHD CRUM ID Error
Step
Possible causative parts:
DRUM CARTRIDGE (PL4.1.21)
PWBA MCU (PL8.2.13)
HARN ASSY PHD XPRO (PL9.1.11)
Does the error still occur when the power is turned OFF and
1
ON?
Checking the DRUM CARTRIDGE type.
2
Is the seated DRUM CARTRIDGE for C2900?
Does the error still occur when the power is turned OFF and
3
ON?
Checking after resetting the DRUM CARTRIDGE.
Reseat the DRUM CARTRIDGE.
4
Does the error still occur when the power is turned OFF and
ON?
Checking the connectors for connection.
Check the connectors between the PWBA MCU and DRUM
5
CARTRIDGE.
Are P/J42 and P/J422 connected correctly?
Does the error still occur when the power is turned OFF and
6
ON?
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?
7
Checking after replacing the DRUM CARTRIDGE.
Replace the DRUM CARTRIDGE. (Refer to RRP4.6.)
8
Does the error still occur when the power is turned OFF and
ON?
Epson AcuLaser C2900N
Check
1 - 102
Remedy
Yes
Go to step 2. End of work.
Replace the PHD
Go to step 4. ASY for C2900,
then go to step 3.
Go to step 4. End of work.
Go to step 5. End of work.
Reconnect the
connector(s) P/
Go to step 7. J42 and/or P/J422
surly, then go to
step 6.
Go to step 7. End of work.
Replace the
Go to step 8. HARN ASSY PHD
XPRO.
Replace the
PWBA MCU. End of work.
(Refer to RRP8.9.)
Revision B
No
Confidential