Oki B6500

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Chapter 1 Troubleshooting
FIP2.9 MOTOR DUPLEX
Step Check Yes No
Possible causes:
MOTOR DUPLEX (PL21.1.29)
PWBA DUPLEX (PL21.1.32)
HARNESS ASSY DUP (PL21.1.7)
HVPS/MCU (PL12.1.19)
LVPS (PL12.1.5)
HARNESS ASSY LVPS (PL12.1.1)
1
Checking HARNESS ASSY DUP for continuity
Remove Option Duplex.
Disconnect P/J50 from PWBA DUPLEX.
Does each cable between J2750 and J50 have continu-
ity?
Go to step 2.
Replace HAR-
NESS ASSY DUP.
2
Checking HARNESS ASSY LVPS for continuity
Disconnect P/J27 from HVPS/MCU.
Does each cable between J27 and J2750 have continu-
ity?
With tool Go to
step 3. Without
tool Go to step 4.
Replace HAR-
NESS ASSY LVPS.
3
Checking MOTOR DUPLEX for rotation
Does the motor rotate?
Check by the rotating sound of the motor.
Check using Chapter 2 Diagnostic [Duplex Motor,
Clockwise Normal Speed Test].
Replace HVPS/
MCU.
(RRP12.10)
Go to step 4.
4
Checking after replacing MOTOR DUPLEX
Replace MOTOR DUPLEX.
Is the problem cleared after replacing the MOTOR
DUPLEX?
End of work Go to step 5.
5
Checking the power to MOTOR DUPLEX
Is the voltage across P/J27-8(+) and P/J27-7(-) on
HVPS/MCU, 24 VDC?
Go to FIP2.8
PWBA DUPLEX.
Go to step 6.
6
Checking HVPS/MCU for continuity
Disconnect P/J10 and P/J27 from HVPS/MCU.
Is there continuity between P10-1 and P27-8?
Go to FIP1.24
LVPS.
Replace HVPS/
MCU. (RRP12.10)