Epson AcuLaser C2900N Service Manual page 112

Chapter 1 Troubleshooting
FIP-1.47 077-907: IOT Remain Duplex JAM (Duplex Model only)
Step
Possible causative parts:
HARN ASSY L SIDE (PL3.1.18)
SENSOR PHOTO (SSI No Paper Sensor) (PL3.2.13)
PWBA MCU (PL8.2.13)
Checking the SENSOR PHOTO (SSI No Paper Sensor) for
operation.
Does the number on the screen increase by one, every time
1 the actuator of the SENSOR PHOTO (SSI No Paper
Sensor) is operated?
Checked by [Digital Input] - [DI-0] in [IOT Diagnosis] of
diagnosis.
Checking the connectors of the SENSOR PHOTO (SSI No
Paper Sensor) for connection.
2 Check the connections between the PWBA MCU and
SENSOR PHOTO.
Are P/J23 and P/J233 connected correctly?
Checking the connectors of the SENSOR PHOTO (SSI No
Paper Sensor) for connection.
3 Check the connections between the PWBA MCU and
SENSOR PHOTO.
Are P/J23 and P/J233 connected correctly?
Checking the HARN ASSY L SIDE for continuity.
Disconnect J23 from the PWBA MCU.
4
Disconnect J233 from the SENSOR PHOTO.
Is each cable of J23 <=> J233 continuous?
Checking the power to the SENSOR PHOTO.
Disconnect J23 from the PWBA MCU.
5
Is the voltage across P23-6pin <=> ground on the PWBA
MCU, about +3.3 VDC?
Epson AcuLaser C2900N
Check
1 - 99
Remedy
Yes
Replace the
PWBA MCU. Go to step 2.
(Refer to RRP8.9.)
Reconnect the
connector(s) P/
Go to step 3.
J23 and/or P/J233
correctly.
Reconnect the
connector(s) P/
Go to step 4.
J23 and/or P/J233
correctly.
Replace the
Go to step 5. HARN ASSY L
SIDE.
Replace the
Replace the
SENSOR
PWBA MCU.
PHOTO(SSI No
(Refer to RRP8.9.)
Paper Sensor)
Revision B
No
Confidential