Epson AcuLaser C2900N Service Manual page 65

Chapter 1 Troubleshooting
FIP-1.25 042-325: IOT Main Motor Failure
Step
Possible causative parts:
DRIVE ASSY MAIN (PL7.1.2)
PWBA MCU (PL8.2.13)
HARNESS ASSY MAIN MOT MG SFP (PL9.1.7)
Does the error occur when the power is turned OFF and
1
ON?
Checking after resetting the DRUM CARTRIDGE.
Reseat the DRUM CARTRIDGE.
2
Does the error still occur when the power is turned OFF and
ON?
Checking the Main Motor for rotation.
Does the Main Motor function normally?
- PC Operation :
Checked by [Main Motor Operation Check] of the [Machine
3
Check] in Tool Box.
- Panel Operation :
Checked by [Digital Output] - [Main Motor] of [IOT Diag] in
diagnosis.
Checking the connectors of the MAIN MOTOR for
connection.
Check the connections between the PWBA MCU and
DRIVE ASSY MAIN.
Are P/J21 and P/J211 connected correctly?
4
Does the error still occur when the power is turned OFF and
5
ON?
Checking the HARNESS ASSY MAIN MOT MG SFP for
continuity.
6 Disconnect J21 from the PWBA MCU.
Disconnect J211 from the DRIVE ASSY MAIN.
Is each cable of J21 <=> J211 continuous?
Checking after resetting the DRIVE ASSY MAIN.
Reseat the DRIVE ASSY MAIN.
7
Does the error still occur when the power is turned OFF and
ON?
Checking the power to the DRIVE ASSY MAIN.
Disconnect J21 from the PWBA MCU.
8 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?
Epson AcuLaser C2900N
Check
1 - 52
Remedy
Yes
Go to step 2. End of work.
Go to step 3. End of work.
Replace the
PWBA MCU. Go to step 4.
(Refer to RRP8.9.)
Reconnect the
connector(s) P/
Go to step 6. J21 and/or P/J211
correctly, then go
to step 5.
Go to step 6. End of work.
Replace the
HARNESS ASSY
Go to step 7.
MAIN MOT MG
SFP.
Go to step 8. End of work.
Replace the
Replace the
DRIVE ASSY
PWBA MCU.
MAIN. (Refer to
(Refer to RRP8.9.)
RRP7.2.)
Revision B
No
Confidential