Oki C9850

Oki Data CONFIDENTIAL
43627911TH Rev. 3
197 /
-3 Paper feed Jam
• Immediately after turning ON the power, does a paper feed jam occur?
• YES Does the paper jam occur at the IN 2 Sensor, WR Sensor or Exit Sensor?
YES Remove the jammed paper.
(A)
• NO Does the lever of the IN 2 Sensor, WR Sensor or Exit Sensor work properly?
NO Replace the defective sensor lever.
• YES Does the sensor (IN 2 Sensor, WR Sensor or Exit Sensor) work properly?
(Check the sensor output using the switch scan test in the self-diagnosis
mode.)
NO After checking the cable connection, replace the Sensor PCB (S2S
PWB).
• YES Check the signal cable connection. (FSNS, DRV0 & DRV1 on the S2P
and DRV0, DRV1 & RSNS on the S2V PWB)
Are they connected properly?
NO Properly connect cable.
• YES Replace the engine PCB.
• NO Immediately after intaking the paper, does a paper feed jam occur?
• YES Did the paper reach the WR sensor?
YES Go to (A).
• NO Is the resist motor operating?
• NO Is the resist motor resistance the rated value at approx. 7.9
Ω
?
NO Replace the resist motor.
• YES Check the gear bite, then replace the engine PCB.
• YES Replace resist roller A or B.
• NO Does a paper feed jam occur when loading the paper?
• YES Is the belt motor running?
• NO Is the resistance of the belt motor the rated level (4.7
Ω
)?
NO Replace the Belt Motor.
• YES After checking the gear engagement and cable connection, re-
place the Motor Driver PCB (S2P).
• YES Is ID rotating?
NO After checking the gear engagement, replace the ID.
• YES After checking the gear engagement, replace the Belt Cassette Assy.
• NO END