Epson AcuLaser C2900N Service Manual page 110

Chapter 1 Troubleshooting
Step
Checking after resetting the TRANSFER ASSY
Reseat the TRANSFER ASSY.
Does the error still occur when printing?
15
Checking the connectors of the SENSOR PHOTO (Regi
Sensor) for connection.
16 Check the connections between the PWBA MCU and
SENSOR PHOTO.
Are P/J23 and P/J232 connected correctly?
Checking the HARN ASSY L SIDE for continuity.
Disconnect J23 from the PWBA MCU.
17
Disconnect J232 from the SENSOR PHOTO.
Is each cable of J23 <=> J232 continuous?
Checking the power to the SENSOR PHOTO.
Disconnect J23 from the PWBA MCU.
18
Is the voltage across P23-3pin <=> ground on the PWBA
MCU, about +3.3 VDC?
Checking the SENSOR PHOTO for operation.
Check the voltage across 23-5pin <=> ground on the PWBA
MCU.
19 Remove the CHUTE ASSY LOW (PL3.2.27) once to check
the operation.
Does the voltage change, when the actuator of the
SENSOR PHOTO is operated?
Epson AcuLaser C2900N
Check
1 - 97
Remedy
Yes
Replace the
TRANSFER
End of work.
ASSY. (Refer to
RRP6.3.)
Reconnect the
connector(s) P/
Go to step 17.
J23 and/or P/J232
correctly.
Replace the
Go to step 18. HARN ASSY L
SIDE.
Replace the
Go to step 19. PWBA MCU.
(Refer to RRP8.9.)
Replace the Replace the
PWBA MCU. SENSOR
(Refer to RRP8.9.) PHOTO.
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