Toshiba e-STUDIO556 Service Manual page 667

Replace parts
Finisher control board
[CB50] Staple motor abnormality
Classification
Finisher related service call
Check item
Stapler
Finisher control board
Replace parts
Stapler
Finisher control board
[CB60] Stapler shift motor abnormality
Is the stapler shift home position sensor (PI7) working normally?
NO 

YES
Is the wiring between the finisher controller PC board and the stapler shift motor (M4)
correct?
YES  Correct the wiring.

NO
Is there any mechanical problem with the stapler stand motion path?
YES  Fix the mechanism.

NO
Try replacing the staple shift motor. Is the problem corrected?
YES  END

NO
Replace the finisher controller PC board.
[CB70] Stack amount detection sensor abnormality
[Procedure 1]
Is the problem solved by turning OFF and ON the power of the equipment?
YES  END

NO
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• Connector check
• Harness check
• Connector check
• Board check
Replace the sensor.
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Remarks
Error item
Measures
Remarks
e-STUDIO556/656/756/856/557/657/757/857
ERROR CODE AND TROUBLESHOOTING
8