Epson AcuLaser C2900N Service Manual page 66

Chapter 1 Troubleshooting
FIP-1.26 042-326: IOT Sub Motor Failure
Step
Possible causative parts:
DRIVE ASSY SUB (PL7.1.1)
PWBA MCU (PL8.2.13)
HARNESS ASSY SUB MOT MG SFP (PL9.1.8)
Does the error still occur when the power is turned OFF and
1
ON?
Checking after resetting the fuser unit and DRUM
CARTRIDGE
Reseat the fuser unit and DRUM CARTRIDGE.
2 Warning: Start the operation after the fuser unit has
cooled down.
Does the error still occur when the power is turned OFF and
ON?
Checking the Sub Motor for rotation.
Does the Sub Motor function normally?
- PC Operation :
3 Checked by [Fuser Motor Operation Check] of the [Machine
Check] in Tool Box.
- Panel Operation : Checked by [Digital Output] - [Sub
Motor] of [IOT Diag] in diagnosis.
Checking the connectors of the SUB MOTOR for
connection.
Check the connections between the PWBA MCU and
DRIVE ASSY SUB.
Are P/J22 and P/J221 connected correctly?
4
Does the error still occur when the power is turned OFF and
5
ON?
Checking the HARNESS ASSY SUB MOT MG SFP for
continuity.
6 Disconnect J22 from the PWBA MCU.
Disconnect J221 from the DRIVE ASSY SUB.
Is each cable of J22 <=> J221 continuous?
Checking after resetting the DRIVE ASSY SUB.
Reseat the DRIVE ASSY SUB.
7
Does the error still occur when the power is turned OFF and
ON?
Checking the power to the DRIVE ASSY SUB.
Disconnect J22 from the PWBA MCU.
8 Are the voltages across J22-2pin/J22-4pin <=> ground on
the PWBA MCU, about +24 VDC when the interlock switch
(HARN ASSY INTERLOCK) is pushed?
Epson AcuLaser C2900N
Check
1 - 53
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. J22 and/or P/J221
correctly, then go
to step 5.
Go to step 6. End of work.
Replace the
HARNESS ASSY
Go to step 7.
SUB MOT MG
SFP.
Go to step 8. End of work.
Replace the
Replace the
DRIVE ASSY
PWBA MCU.
SUB. (Refer to
(Refer to RRP8.9.)
RRP7.1.)
Revision B
No
Confidential