Oki B6500

1 – 88
Chapter 1 Troubleshooting
FIP3.7 No Recognition of Option OCT
Step Check Yes No
Possible causes:
HVPS/MCU (PL12.1.19)
HARNESS ASSY OCT1 (PL12.1.26)
PWBA OCT (PL23.1.22)
HARNESS ASSY OCT2 (PL23.1.25)
1
Checking Option OCT detection signal (1)
Disconnect P/J70 on PWBA OCT.
Is the voltage across J70-5(+) and J70-6(-) of HAR-
NESS ASSY OCT2, 3.3 VDC?
Go to step 5. Go to step 2.
2
Checking Option OCT detection signal (2)
Is the voltage across P/J30-4(+) and P/J30-3(-) on
HVPS/MCU, 3.3 VDC?
Go to step 3.
Replace HVPS/
MCU. (RRP12.10)
3
Checking HARNESS ASSY OCT2 for continuity
Remove HARNESS ASSY OCT2.
Is there continuity between J70 and J3070?
Go to step 4.
Replace HAR-
NESS ASSY
OCT2.
4
Checking HARNESS ASSY OCT1 for continuity
Remove HARNESS ASSY OCT1.
Is there continuity between J30 and J3070?
Go to step 5.
Replace HAR-
NESS ASSY
OCT1.
5
Checking PWBA OCT
Replace PWBA OCT.
Does the problem still occur, after replacing PWBA
OCT with a new PWBA OCT.
Replace HVPS/
MCU.
(RRP12.10)
End of work