SHARP AR-SS2
Manual de Servicio

AR-SS2 b. Stapler motor ON/OFF control ON/OFF and the rotation direction of the stapler motor are controlled by the combination of the following two signals. 1. Stapler motor forward rotation signal (SPMCW�) 2. Stapler motor reverse rotation signal (SPMCCW�) Stapler motor rotating direction SPMCW� SPMCCW� Forward 1 0 Reverse 0 1 Stop 1 0 c. Stapler motor overcurrent protection When the stapler motor starts rotation, the current detection circuit detects the current flowing through the stapler motor. When an overcurrent is detected, the current detection circuit turns on Q54 and Q55 to control the stapler motor drive. 3) Stapler motor staple jam control When a staple jam occurs in the stapler unit, the stapler motor (M5) is controlled as follows. 1) An overload is applied to the stapler motor by a staple jam. � 2) The stapler does not return to the home position within about 0.6sec after starting stapling. � 3) The stapler motor is rotated in reverse to return to the home position of stapling. � 4) An alarm is made to the copier. 4) Safety switch (MS3) When your finger enters the stapling position, the actuator is lowered to turn off the safety switch. When the safety switch is turned off, the stapler motor (M5) power is cut off and the signal is sent to the CPU to turn off the drive signal of the stapler motor (M5) to stop stapling.
Staple Plate Spring Staple cartridge
MS5 MS6

5) Staple empty detection The staple empty detection in the staple cartridge is made by the staple empty detection switch (MS5) provided in the stapler. The staples in the staple cartridge are pushed up by the spring and the plate. the staples are also pushed toward the tip of the stapler. When there are staples in the cartridge, the staple empty detection switch (MS5) is pushed by the staples and the sorter controller detects presence of the staples. When the staples are exhausted (when the remaining quantity of the staples becomes about 40 pcs.), the staple detection switch (MS5) is opened (MS5: normal open), and the sorter controller detects staple empty. At the same time, the sorter controller displays the staple supply display. When staple empty is detected, stapling is stopped. When, however, staple empty is detected during continuous stapling, stapling is stopped after completion of the job.
Staple feed roller Staple empty detection switch Cartridge empty detection switch

MS5

MS6

Safety switch (MS3)

(3) Stapler unit oscillation control
1) Outline When the bin is shifted, the stapler unit oscillates as shown below so that the stapler unit does not make contact with the paper in the bin. Oscillation is performed by the stapler unit oscillation motor (M4). When the stapler unit reaches the stapling position, the drive power is supplied to the stapler motor. To detect the home position, the stapler home position switch (MS4) is provided.

Actuator

9 � 13