Oki OKICOLOR 8 Maintenance Manual page 119

2-1 Paper input jam (1st tray)
• Does the paper reach the FF sensor 1 or 2?
• Yes Remove the paper jam.
Do the sensor levers (FF sensor 1, FF sensor 2) work right?
• No Replace the defective sensor lever (FF sensor 1, FF sensor 2).
• Yes Do the sensors (FF sensor 1, FF sensor 2) work right? (Operate each sensor lever and
check its signal on the related pin of the FSENS connector of the junction board (PXF-PCB).)
Pin 1 for FF sensor 1, Pin 4 for FF sensor 2
• No Check the connection of the signal cable or replace the sensor board (PXM PCB).
• Yes Is the junction board (PXF PCB) operation properly?
(Operate each sensor lever and check its signal on the related pin of the PXFIF connector
of the junction board (PXF-PCB).)
Pin B8 for FF sensor 1, Pin A7 for FF sensor 2
• No Replace the junction board (PXF-PCB).
• Yes Check the connection of the connectors between the junction board (PXF PCB) and the
engine board (PX4 PCB) or replace the engine board.
• No Replace the feed roller or the paper separation frame assembly of the paper cassette.
• Is the regist motor rotates properly?
Yes Replace the feed roller or the paper separation frame assembly of the paper cassette.
• No Is the resistance of the regist motor about 7.1 ohms?
No Replace the regist motor.
• Yes Is +32V being supplied on the FU2 of the engine board?
No Replace the low-voltage power supply.
• Yes Check the gear engagement and the connection of the cables or replace the engine board.
41057610TH Rev. 1
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