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ERROR CODE AND TROUBLESHOOTING
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[CB11] Buffer tray guide motor abnormality
[CB12] Buffer roller drive motor abnormality
[CB30] Tray 1/2 shift motor abnormality
* You receive a [CB11] error when the [ED16] error occurs three times in succession.
MJ-1101
Is there any mechanical problem when the buffer tray guide is opened/closed while the buffer
roller is lifted up?

YES Fix the mechanism.
NO
Is the harness between the buffer tray guide motor (M3) and the finisher control PC board
(CN18) disconnected or open circuited?
l

YES • Reconnect the connector securely.
• Replace the harness.
NO
1. Replace the buffer tray guide motor (M3).
2. Replace the finisher control PC board.
MJ-1101
Is there any mechanical problem when the buffer roller is rotated?

YES Fix the drive mechanism.
NO
Is the harness between the buffer roller drive motor (M6) and the finisher control PC board
(CN18) disconnected or open circuited?
l

YES • Reconnect the connector securely.
• Replace the harness.
NO
1. Replace the buffer roller drive motor (M6).
2. Replace the finisher control PC board.
MJ-1030
Are the tray 1 shift area sensors 1-3 and tray 2 shift area sensors 1-3 normal?
 NO  Replace the tray 1/2 shift area sensor boards.
YES
Are the wirings between the finisher controller PC board and the tray 1/2 shift motors (M37/
M38) correct?
 NO  Correct the wirings.
YES
Is there any problem with the tray lift mechanism?
 NO  Fix the lift mechanism.
YES
1. Replace the tray 1/2 shift motors.
2. Replace the finisher controller PC board.
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