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Chapter 2 Troubleshooting
FIP-1.57 042-326: IOT Sub Motor Failure
Step Check
Remedy
Yes No
Possible causative parts:
DRIVE ASSY SUB (PL7.1.1)
PWBA MCU (PL8.3.6)
HARNESS ASSY SUB MOT MG AIO (PL9.1.8)
1
Does the error still occur when the power is turned OFF and
ON?
Go to step 2. End of work.
2
Checking after resetting the FUSING UNIT and PHD ASSY
Reseat the FUSING UNIT and PHD ASSY.
Warning: Start the operation after the FUSING UNIT has
cooled down.
Does the error still occur when the power is turned OFF and
ON?
Go to step 3. End of work.
3
Checking the Sub Motor for rotation.
Does the Sub Motor function normally?
- PC Operation :
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.
Replace the KIT
PWBA MCU.
(Refer to
REP8.10.)
Go to step 4.
4
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?
Go to step 6.
Reconnect the
connector(s) P/
J22 and/or P/J221
correctly, then go
to step 5.
5
Does the error still occur when the power is turned OFF and
ON?
Go to step 6. End of work.
6
Checking the HARNESS ASSY SUB MOT MG AIO for
continuity.
Disconnect J22 from the PWBA MCU.
Disconnect J221 from the DRIVE ASSY SUB.
Is each cable of J22 <=> J221 continuous?
Go to step 7.
Replace the
HARNESS ASSY
SUB MOT MG
AIO.
7
Checking after resetting the DRIVE ASSY SUB.
Reseat the DRIVE ASSY SUB.
Does the error still occur when the power is turned OFF and
ON?
Go to step 8. End of work.
8
Checking the power to the DRIVE ASSY SUB.
Disconnect J22 from the PWBA MCU.
Are the voltages across J22-2pin/J22-4pin <=> ground on
the PWBA MCU, about +24 VDC when the interlock switch
(HARN ASSY INTERLOCK AIO) is pushed?
Replace the
DRIVE ASSY
SUB. (Refer to
REP7.1.)
Replace the KIT
PWBA MCU.
(Refer to
REP8.10.)
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