Epson AcuLaser C2900N Service Manual page 92

Chapter 1 Troubleshooting
Step
Checking the ACTUATOR REGI ROLL M for shape and
operation.
Remove the CHUTE ASSY LOW (PL3.2.27) once to check
17
the shape and operation.
Are the shape and operation of the ACTUATOR REGI
ROLL M normal?
Checking the connectors for connection.
Check the connections between the PWBA MCU and
DRIVE ASSY MAIN (Main Motor).
Are P/J21 and P/J211 connected correctly?
18
Checking the HARNESS ASSY MAIN MOT MG SFP for
continuity.
19 Disconnect J21 from the PWBA MCU.
Disconnect J211 from the DRIVE ASSY MAIN.
Is each cable of J21 <=> J211 continuous?
Checking the power to the DRIVE ASSY MAIN.
Disconnect J21 from the PWBA MCU.
20 Are the voltages across J21-2pin/J21-4pin <=> ground on
the PWBA MCU, about +24 VDC when the interlock switch
(HARN ASSY INTERLOCK) is pushed?
Checking the connectors of the SOLENOID FEED
(Cassette Feed Solenoid) for connection.
Check the connections between the PWBA MCU and
SOLENOID FEED.
Are P/J23 and P/J231 connected correctly?
21
Checking the HARN ASSY L SIDE for continuity.
Disconnect J23 from the PWBA MCU.
22
Disconnect P231 from the SOLENOID FEED.
Is each cable of J23 <=> P231 continuous?
Checking the power to the SOLENOID FEED.
Disconnect J23 from the PWBA MCU.
23 Is the voltage across P23-1pin <=> ground on the PWBA
MCU, about +24 VDC when the Interlock Switch (HARN
ASSY INTERLOCK) is pushed?
Epson AcuLaser C2900N
Check
1 - 79
Remedy
Yes
Reseat the
ACTUATOR REGI
Replace the
ROLL M. If broken
PWBA MCU.
or deformed,
(Refer to RRP8.9.)
replace it with a
new one.
Reconnect the
connector(s) P/
Go to step 19.
J21 and/or P/J211
correctly.
Replace the
HARNESS ASSY
Go to step 20.
MAIN MOT MG
SFP.
Replace the
Replace the
DRIVE ASSY
PWBA MCU.
MAIN. (Refer to
(Refer to RRP8.9.)
RRP7.2.)
Reconnect the
connector(s) P/
Go to step 22.
J23 and/or P/J231
correctly.
Replace the
Go to step 23. HARN ASSY L
SIDE.
Replace the
Go to step 24. PWBA MCU.
(Refer to RRP8.9.)
Revision B
No
Confidential