Oki B6500 Service Manual page 54

Step
Checking CLUTCH REGI (PL5.1.23)
Remove SHIELD PLATE HVPS (PL12.1.18).
7 Disconnect P/J243.
Remove EP CARTRIDGE.
Does FAN MAIN rotate, when the power is turned ON?
Checking OPERATION PANEL
Disconnect HARNESS ASSY PANEL from PWBA ESS.
Remove EP CARTRIDGE.
8
Does FAN MAIN rotate, when the power is turned ON?
Check with the wind from exhaust on back of the
printer.
Checking HARNESS ASSY PANEL for continuity
Disconnect HARNESS ASSY PANEL from PWBA ESS.
9
Is there any open circuit or short circuit on the harness,
and is every cable continuous?
Checking ROS ASSY
Disconnect P/J13, P/J14, P/J16 and P/J17 from HVPS/
10 MCU.
Remove EP CARTRIDGE.
Does FAN MAIN rotate, when the power is turned ON?
Checking PWBA FEEDER
Disconnect P/J20 from HVPS/MCU.
11
Remove EP CARTRIDGE.
Does FAN MAIN rotate, when the power is turned ON?
Checking INTERLOCK S/W
Disconnect P/J44 and P/J45 from LVPS.
Are the followings continuous when pushing the lever of
12
INTERLOCK S/W, and not continuous when releasing?
P/J44-1 and P/J44-3
P/J45-1 and P/J45-3
Checking SWITCH I/L ASSY
Disconnect P/J411.
13 Is it continuous between P/J411-2 and P/J411-1, when
SWITCH I/L ASSY is pushed, and is not when
released?
Checking CLUTCH ASSY PH
Disconnect P/J242 and P/J247 from HARNESS ASSY
TRAY 1/2.
14
Remove EP CARTRIDGE.
Does the FAN MAIN rotate, when the power is turned
ON?
Checking MAIN MOTOR
Disconnect P/J43 from LVPS.
15
Remove EP CARTRIDGE.
Does FAN MAIN rotate, when the power is turned ON?
Checking FAN MAIN
Replace FAN MAIN. (RRP12.6)
16 Remove EP CARTRIDGE.
Does the FAN MAIN rotate, when the power is turned
ON?
Check
1 – 34
Chapter 1 Troubleshooting
Yes
Go to FIP1.38
Go to step 8.
CLUTCH REGI.
Go to step 9. Go to step 10.
Replace OPERA- Replace HAR-
TIONAL PANEL. NESS ASSY
(RRP1.4)
Replace ROS
Go to step 11.
ASSY. (RRP8.1)
Replace PWBA
FEEDER 550. Go to step 12.
(RRP20.8)
Replace INTER-
Go to step 13.
(RRP8.5, 12.5)
Replace SWITCH I/
Go to step 14.
L ASSY. (RRP1.6)
Go to FIP1.39
CLUTCH ASSY Go to step 15.
PH.
Go to FIP1.25
Go to step 16.
MAIN MOTOR.
End of work Go to step 17.
No
PANEL.
LOCK S/W.