Epson AcuLaser C2900N, Service Manual

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Chapter 1 Troubleshooting
Epson AcuLaser C2900N
Revision B
Confidential
FIP-1.36 075-101 / 075-102 / 075-923: IOT SSI Insert JAM / IOT SSI Paper Pullout JAM /
Waiting for reseat paper of SSI
Step Check
Remedy
Yes No
Possible causative parts:
HARN ASSY L SIDE (PL3.1.18)
SENSOR PHOTO (PL3.2.13)
PWBA MCU (PL8.2.13)
1
Checking the customer operation.
Did the customer insert the paper to the SSI during print?
After print
completion, insert
the paper to the
SSI.
Go to step 2.
2
Checking the SSI No Paper Sensor for operation.
Does the number on the screen increase by one, when the
actuator (ACTUATOR SSI) is operated by paper.
Checked by [Digital Input] - [Main Motor] in [IOT Diag] of
diagnosis.
Go to step 3. Go to step 4.
3
Checking the error.
Does the error still occur when printing?
Replace the
PWBA MCU.
(Refer to RRP8.9.)
End of work.
4
Checking the connectors of the SENSOR PHOTO (SSI No
Paper Sensor) for connection.
Check the connections between the PWBA MCU and
SENSOR PHOTO.
Are P/J23 and P/J233 connected correctly?
Go to step 6.
Reconnect the
connector(s) P/
J23 and/or P/J233
correctly, then go
to step 5.
5 Does the error still occur when printing? Go to step 6. End of work.
6
Checking the HARN ASSY L SIDE for continuity.
Disconnect J23 from the PWBA MCU.
Disconnect J233 from the SENSOR PHOTO.
Is each cable of J23 <=> J233 continuous?
Go to step 7.
Replace the
HARN ASSY L
SIDE.
7
Checking the power to the SENSOR PHOTO.
Disconnect J23 from the PWBA MCU.
Is the voltage across P23-6pin <=> ground on the PWBA
MCU, about +3.3 VDC?
Go to step 8.
Replace the
PWBA MCU.
(Refer to RRP8.9.)
8
Checking the SENSOR PHOTO for operation.
Check the voltage across J23-8pin <=> ground on the
PWBA MCU.
Remove the CHUTE ASSY LOW (PL3.2.27) once to check
the operation.
Does the voltage change, when the ACTUATOR SSI is
operated?
Replace the
PWBA MCU.
(Refer to RRP8.9.) Replace the
SENSOR
PHOTO.