Oki Data CONFIDENTIAL
42049001TH Rev.1 74 /
2-1 Paper Loading Jam (1st tray)
• Does a paper loading jam occur immediately after the printer is turned on?
• YES Is paper jammed at the entrance sensor 1 or the entrance sensor 2?
YES Remove the jammed paper.
(A)
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• NO Do the levers (of entrance sensor1 and the entrance sensor 2) move properly?
NO Replace defective sensor lever(s).
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• YES Do the sensors operate properly? [Operate each sensor lever to check the signals on FSNS
connector pins of the engine board (RSN PWB)]. Pin 4: Entrance sensor 1, Pin 2: Entrance
sensor 2.
NO Replace the front sensor board (RSF PWB) after checking signal cable connection.
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• YES Replace the engine board after checking signal cable connection.
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• NO Does a paper loading jam occur moments after paper is drawn into the printer?
• YES Has paper reached the entrance sensor 1 or the entrance sensor 2?
YES Go to (A).
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• NO Replace the feed roller or the paper cassette’s paper separation frame assy.
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• NO Is the 1st hopping motor running?
• YES Is the solenoid operating properly?
NO Replace the solenoid.
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• YES Does the solenoid have a rated resistance (approx. 8.9Ω)?
NO Replace the solenoid.
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• YES Replace the feed roller or the paper cassette’s paper separation frame assy.
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• NO Does the 1st hopping motor have a rated resistance (approx. 3.5Ω)?
NO Replace the 1st hopping motor.
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• YES Is 24V being output to the fuse F2 on the engine board?
NO Replace the low voltage power unit.
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• YES Replace the engine board after checking gear engagement and cable connection.
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