Epson AcuLaser C2900N Service Manual page 82

Chapter 1 Troubleshooting
Step
Checking the HARN ASSY L SIDE for continuity
Disconnect J23 from the PWBA MCU.
23
Disconnect P231 from the SOLENOID FEED MSI.
Is each cable of J23 <=> P231 continuous?
Checking the power to the SOLENOID FEED MSI
Disconnect J23 from the PWBA MCU.
24 Is the voltage across P23-1pin <=> ground on the PWBA
MCU, about +24 VDC when the Interlock Switch (HARN
ASSY INTERLOCK) is pushed?
Checking the SOLENOID FEED MSI for resistance.
25 Disconnect P/J231 of the SOLENOID FEED MSI.
Is the resistance across J231-1 and J231-2 about 96 ohm?
Checking the connectors of the SENSOR PHOTO (Regi
Sensor) for connection.
Check the connections between the PWBA MCU and
SENSOR PHOTO.
Are P/J23 and P/J232 connected correctly?
26
Checking the HARN ASSY L SIDE for continuity.
Disconnect J23 from the PWBA MCU.
27
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.
28
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.
29 Remove the CHUTE ASSY LOW (PL3.2.27) once to check
the operation.
Does the voltage change, when the actuator (ACTUATOR
REGI IN) is operated?
Epson AcuLaser C2900N
Check
1 - 69
Remedy
Yes
Replace the
Go to step 24. HARN ASSY L
SIDE.
Replace the
Go to step 25. PWBA MCU.
(Refer to RRP8.9.)
Replace the
Replace the
SOLENOID FEED
PWBA MCU.
MSI. (Refer to
(Refer to RRP8.9.)
RRP3.3.)
Reconnect the
connector(s) P/
Go to step 27.
J23 and/or P/J232
correctly.
Replace the
Go to step 28. HARN ASSY L
SIDE.
Replace the
Go to step 29. PWBA MCU.
(Refer to RRP8.9.)
Replace the
Replace the
SENSOR
PWBA MCU.
PHOTO:REGI.
(Refer to RRP8.9.)
(Refer to RRP3.8.)
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