Ricoh D131 Service Manual page 526

Finisher stapler movement motor error (D610)
The stapler HP sensor is not activated within the specified time
SC722-42 B
after the stapler motor turned on. The 1st detection failure issues a
jam error, and the 2nd failure issues this SC code.
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Finisher corner stapler rotation motor error (D610)
The stapler does not return to its home position within the specified
SC722-43 B
time after stapling. The 1st detection failure issues a jam error, and
the 2nd failure issues this SC code.
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Finisher corner stapler motor error (D610)
The stapler motor does not switch off within the prescribed time
SC722-44 B
after operating. The 1st detection failure issues a jam error, and the
2nd failure issues this SC code.
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SM Appendix
Stapler movement motor disconnected, defective
Stapler movement motor overloaded due to obstruction
Stapler HP sensor disconnected, defective
Stapler rotation motor disconnected, defective
Stapler rotation motor overloaded due to obstruction
Stapler rotation HP sensor disconnected, defective
Staple jam
Number of sheets in the stack exceeds the limit for stapling
Stapler motor disconnected, defective
2-59
SC700: Peripherals
D131/D132/D133