Oki C9850 Maintenance Manual page 196

-2 Paper Supply Jam (Multipurpose Tray)
• Immediately after turning ON the power, does the paper jam occur?
• YES
• NO
• YES
• YES
• NO Immediately after intaking the paper, does a paper jam occur?
• YES
• NO
• NO Is the resist motor operating?
• NO
• YES
• YES Check the cable connection, then replace the Motor Driver PCB (S2P).
43627911TH Rev. 3
Is there a jam in the IN1 Sensor or 1st Hopping Sensor?
YES Remove the paper jam.
(A)
Does the Sensor Lever (IN1 Sensor, Paper Hopping Sensor) operator
normally?
NO Replace the defective sensor lever.
Does the Sensor (IN1 Sensor, Paper Hopping Sensor) operate normally?
(Check the sensor output using the switch scan test in the self-diagnosis
mode.)
NO Check the signal cable connection, then replace the Sensor PCB
(S2S PWB).
After checking the signal cable connection, replace the Motor Driver PCB
(S2P).
Did the paper reach the IN2 sensor?
YES Go to (A).
Replace the multipurpose tray Assy.
Is 20V or more output to the DC0 connector pin of the Motor Driver PCB
(S2P)?
NO Replace the low voltage power unit.
Check the cable connection, then replace the Motor Driver PCB (S2P).
Oki Data CONFIDENTIAL
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