AR-F12 (serv.man5). Puncher unit (option) basic operation - Sharp Copying Equipment Service Manual (repair manual). Page 13

2) After the horizontal registration sensors (LED1 to 4, PTR1 to 4) detect the edge of the paper at its

inner side in keeping with the paper size signals arriving from the host machine, the horizontal
registration motor (M2P) drives the punch slide unit to a predetermined position further towards
the front, and stops the unit at this position.

Horizontal registration sensor 1(LED1,PTR1)
: detects the edge of A3, A4, LT, and LD papers

Horizontal registration sensor 2 (LED2,PTR2)
detects the edge of B4, B5, LT-R, and LG papers

Horizontal registration sensor 3 (LED3,PTR3)
: detects the edge of A4-R paper

Horizontal registration sensor 4 (LED4,PTR4)
: detects the edge of B5-R paper

3) When the trailing edge sensor (LED5, PTR5) detects the trailing edge of the paper, drive of the

inlet feed motor (M9) and first feed motor (M1) on the finisher is stopped to stop paper feed.
Next, the punch motor (M1P) is driven to punch holes in the paper.

Punch