41956001TH Rev.6 118 /
Oki Data CONFIDENTIAL
3 Paper size error
• Is paper of regulated size being used?
No Use paper of regulated size.
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• Yes Is a jam detected by the entrance FF sensor or paper width sensor?
Yes Remove the jammed paper.
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• No Is the entrance FF sensor lever functioning properly?
No Place the faulty sensor lever.
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• Yes Is the entrance FF sensor functioning properly?
(Check the FSENS connector pin signal on the engine board (K7N PWB).)
Pin 4: Entrance FF sensor
No Check the cable connections, then replace the sensor board (R71 PWB).
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• Yes Is the entrance belt sensor functioning properly?
No Place the faulty sensor lever.
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• Yes Is the entrance belt sensor functioning properly?
(Operate the sensor lever and confirm that the sensor functions properly in the switch scan
test in the system maintenance mode. Also check the FSENS connector pin signal on the
engine board (K7N PWB).)
Pin 6: Entrance belt sensor
No Check the cable connections, then replace the sensor board (R71 PWB).
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• Yes Are all paper size detection switch on the size detection board (PXC-PWB) functioning
properly?
(Press the paper size detection switch and check the PSIZE connector pin signal on the
engine board.)
Pin 3: Paper size detector 1
Pin 4: Paper size detector 2
Pin 5: Paper size detector 3
Pin 6: Paper size detector 4
No Check the cable connections, then replace the paper size detection board (PXC-PWB).
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• Yes Check the cable connections, then replace the engine board.
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