Epson AcuLaser C2900N Service Manual page 89

Chapter 1 Troubleshooting
Step
Checking the HARN ASSY L SIDE for continuity.
Disconnect J23 from the PWBA MCU.
7
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.
8
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 J23-5pin <=> ground on the
PWBA MCU.
9 Remove the CHUTE LOW CST (PL3.2.35) once to check
the operation.
Does the voltage change, when the actuator (ACTUATOR
REGI IN) is operated?
Epson AcuLaser C2900N
Check
1 - 76
Remedy
Yes
Replace the
Go to step 8. HARN ASSY L
SIDE.
Replace the
Go to step 9. PWBA MCU.
(Refer to RRP8.9.)
Replace the
Replace the
SENSOR
PWBA MCU.
PHOTO:REGI.
(Refer to RRP8.9.)
(Refer to RRP3.8.)
Revision B
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