Oki B6500

1 – 80
Chapter 1 Troubleshooting
FIP2.11 SWITCH DUPLEX
Step Check Yes No
Possible causes:
SWITCH DUPLEX (PL21.1.27)
HARNESS ASSY LVPS (PL12.1.1)
HARNESS ASSY DUP COVER (PL21.1.31)
PWBA DUPLEX (PL21.1.32)
HARNESS ASSY DUP (PL21.1.7)
HVPS/MCU (PL12.1.19)
LVPS (PL12.1.5)
1
Checking SWITCH DUPLEX for continuity
Remove SWITCH DUPLEX.
Is J520-2 and J520-1 continuous, when SWITCH
DUPLEX is pushed, and cut when released?
Go to step 2.
Replace SWITCH
DUPLEX.
(RRP21.12)
2
Checking HARNESS ASSY DUP COVER for continuity
Remove HARNESS ASSY DUP COVER.
Is there continuity between J52 and J520?
Go to step 3.
Replace HAR-
NESS ASSY DUP
COVER.
3
Checking HARNESS ASSY DUP for continuity
Remove HARNESS ASSY DUP.
Is there continuity between J50 and J2750?
Go to step 4.
Replace HAR-
NESS ASSY DUP.
4
Checking HARNESS ASSY LVPS for continuity
Remove HARNESS ASSY LVPS.
Is there continuity between J27 and J2750?
Go to step 5.
Replace HAR-
NESS ASSY LVPS.
5
Checking the voltage of SWITCH DUPLEX
Remove EP Cartridge.
Is the voltage across P/J27-4(+) and P/J27-3(-) on
HVPS/MCU, 3.3 VDC?
Go to FIP2.8
PWBA DUPLEX.
Go to step 6.
6
Checking HVPS/MCU for continuity
Disconnect P/J27 from HVPS/MCU.
Is there continuity between P27-4 and P11-16?
Replace HVPS/
MCU.
(RRP12.10)
Go to FIP1.24
LVPS.