Oki C9400 Maintenance Manual page 85

2-5 DUPLEX jam
• Does the paper jam occur immediately after the printer is turned on?
• Yes Is the paper jammed at the in sensor, rear sensor or front sensor in the DUPLEX unit?
Yes Remove the jammed paper.
• No Do the in sensor, rear sensor and front sensor in the DUPLEX unit operate properly?
No Replace the defective sensor.
• Yes Check the cable connections at the in sensor, rear sensor and front sensor of the DUPLEX
unit, or replace the DUPLEX unit board (V73 PWB).
• No Does the paper jam occur immediately after paper is fed into the DUPLEX unit?
• Yes Is the DUPLEX motor rotating?
No Replace the DUPLEX motor.
• Yes Check gear engagement or replace the DUPLEX board (V73 PWB).
• Yes Replace the DUPLEX unit.
41388601TH Rev.6
Oki Data CONFIDENTIAL
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