Epson AcuLaser C2900N, Service Manual

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Chapter 1 Troubleshooting
Epson AcuLaser C2900N
Revision B
Confidential
FIP-1.60 093-926 / 093-960 / 093-961 / 093-962: IOT (YMCK) CRUM ID Error
Step Check
Remedy
Yes No
Possible causative parts:
CONNECTOR CRUM (PL5.1.14)
TONER CARTRIDGE (Y) (PL5.1.24)
TONER CARTRIDGE (M) (PL5.1.23)
TONER CARTRIDGE (C) (PL5.1.22)
TONER CARTRIDGE (K) (PL5.1.21)
HARN ASSY TONER CRUM (PL5.1.26)
PWBA MCU (PL8.2.13)
1
Close the COVER ASSY WINDOW TNR correctly.
Does the error still occur when the power is turned OFF and
ON?
Go to step 2. End of work.
2
Checking the Toner Type.
Is the Toner for C2900 seated?
Go to step 3.
Change the Toner
Type setting to
Non-GenuineToner.
3
Checking after resetting the TONER CARTRIDGE (Y, M, C
or K).
Reseat the TONER CARTRIDGE (Y, M, C or K), and check
that the lock key is in the lock position.
Does the error still occur when the power is turned OFF and
ON?
Go to step 4. End of work.
4
Checking after replacing the TONER CARTRIDGE (Y, M, C
or K).
Replace the TONER CARTRIDGE (Y, M, C or K), and check
that the lock key is in the lock position. (Refer to RRP5.4.)
Does the error still occur when the power is turned OFF and
ON?
Go to step 5. End of work.
5
Checking the connector for connection.
Check the connectors between the PWBA MCU and
CONNECTOR CRUM.
Are P/J31 and P/J311(Y),P/J312(M),P/J313(C),P/J314(K)
connected correctly?
Example: For Yellow
Go to step 7.
Reconnect the
connector(s) P/
J31 and/or P/J311
(Y),P/J312 (M),P/
J313 (C),P/J314
(K) surly, 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 HARN ASSY TONER CRUM for continuity.
Disconnect J31 from the PWBA MCU.
Disconnect J311 from the CONNECTOR CRUM.
Is each cable of J31 <=> J311/J312/J313/J314 continuous?
Go to step 8.
Replace the
HARN ASSY
TONER CRUM(Y,
M, C or K).
8
Checking the power to CONNECTOR CRUM.
Disconnect J31 from the PWBA MCU.
Is the voltage across P31-3pin(Y)/-7pin(M)/-11pin(C)/-15pin
<=> ground on the PWBA MCU, about +3.3 VDC? Replace the
CONNECTOR
CRUM(Y, M, C or
K).
Replace the
PWBA MCU.
(Refer to RRP8.9.)