Oki Data CONFIDENTIAL
42049001TH Rev.1 78 /
2-5 Duplex Print Jam
• Does a paperfeed jam occur at the instant following the printer is turned on?
• YES Does paper exist in the duplex unit?
YES Remove the jammed paper.
(A)
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• NO Do the duplex-in sensor, rear sensor and front sensor levers move properly?
NO Replace problem sensor lever(s).
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• YES Do the duplex-in, rear and front sensors function properly? (Through the switch scan test
of System Maintenance mode, check the sensors are placed at the paper absence detection
level.)
NO Replace malfunctioned sensor(s) after checking cable connection.
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• YES Replace the duplex controller board (V7X PWB).
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• NO Does a paperfeed jam occur moments after paper is drawn into the printer?
• YES Has paper reached the duplex rear sensor?
YES Proceed to (A).
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• NO Is the duplex motor running?
• NO Does the duplex motor have a rated resistance (approx. 6.0Ω)?
NO Replace the duplex motor.
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• YES Replace the duplex board (V7X PWB) after checking gear engagement.
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• YES Replace the registration roller A or B.
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• NO Replace the duplex unit.
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