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ERROR CODE AND TROUBLESHOOTING
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[CB30] Movable tray shift motor abnormality
[CB31] Movable tray paper-full detection error
[CB40] Rear aligning plate motor abnormality
MJ-1101
Is there any mechanical problem when the movable tray is moved?

YES Fix the mechanism.
NO
Is the harness between the movable tray shift motor (M7) and the finisher control PC board
(CN8) disconnected or open circuited?
l

YES • Reconnect the connector securely.
• Replace the harness.
NO
Is there a disconnection of the connector, incorrect installation or breakage of the movable tray
position A, B, and C sensors (S13, S14, and S15)?
l

YES • Replace the harness.
• Reinstall the sensor correctly.
• Replace the sensor.
NO
1. Replace the movable tray shift motor (M7).
2. Replace the finisher control PC board.
MJ-1101
Is there any mechanical problem when the actuator of the movable tray paper-full sensor
(S16) is moved?

YES Fix the mechanism.
NO
Is there a disconnection of the connector, incorrect installation or breakage of the
movable tray
paper-full sensor (S16)?
l
l

YES • Connect the connector securely.
• Reinstall the sensor correctly.
• Replace the sensor.
NO
Is the harness between the
movable tray paper-full sensor (S16) and the finisher control PC
board (CN13) disconnected or open circuited?
l

YES • Reconnect the connector securely.
• Replace the harness.
NO
Replace the finisher control PC board.
MJ-1030
Is the rear aligning plate home position sensor (PI37) normal?
 NO  Correct the wiring.
YES
Is there any mechanical problem with the path of aligning plate?
 NO  Fix the mechanism.
YES
1. Replace the rear aligning plate motor.
2. Replace the finisher controller PC board.
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