MX-FNX2 (serv.man7). Section 5 - Operational Descriptions . - Sharp Copying Equipment Service Manual (repair manual). Page 14

MX-FNX2/AR-PN1/MX-RBX1  OPERATIONAL DESCRIPTION  5 – 14

b. Punching Operation
The hole puncher is driven by the punch motor (FPNM). The home
position for the hole puncher is detected by the punch home posi-
tion sensor (FPHPD).
The punch unit comes in four types, selected to suit the country of
installation: 2-hole (Punch Unit-J1), 2- and 3-hole (Punch Unit-K1),
or two types of 4-hole (Punch Unit-G1, Punch Unit-H1).
The 2-hole and 4-hole types punch a hole when the punch shaft is
rotated 180

° from the home position, causing the punch to make a

single round trip. The 2-/3-hole type punches a hole, but the cir-
cumference of the punch shaft is divided into two (half for 2-hole
and the other half for 3-hole).
1)

2-Hole, 4-Hole Type
The home position is identified when the punch home position
sensor (FPHPD) is ON. The punching operation for the first
sheet ends when the punch shaft has rotated 180

° and the

punch home position sensor (FPHPD) goes ON; the punching
operation for the second sheet ends when the punch shaft has
rotated 180

° in reverse and the punch home position sensor

(FPHPD) goes ON.
<1> A hole is punched along the trailing edge of the 1st sheet.

<2> A hole is made along the trailing edge of the 2nd sheet.

2)

2-/3-Hole Type
The home position is identified when the punch home position
sensor (FPHPD) is ON. To make two holes, the punching oper-
ation for the first sheet ends when the punch shaft rotates 180

°

(half circumference) and the punch home position sensor
(FPHPD) goes ON. At this time, the 3-hole puncher makes a
single round trip in escape direction (moving up the hole
puncher) on a half circumference of the punch shaft. The
punching operation for the second sheet ends when the punch
shaft has rotated 180

° counterclockwise and the punch home

position sensor (FPHPD) goes ON (half circumference).
At this time, the 3-hole puncher makes a single round trip in
escape direction (moving up the hole puncher) on the other
half circumference of the punch shaft.
The punching operation takes place as follows when making
two holes in two sheets of paper:

<1> A hole is made along the trailing edge of the 1st sheet.

While two holes are being made, the 3-hole puncher
makes a single round trip in escape direction.

<2> Holes are made along the trailing edge of the 2nd sheet.

While two hole are being made, the 3-hole puncher makes
a single round trip in escape direction (moving up the hole
puncher).

(punch shaft at rest/

home position)

(punch shaft CW rotation

by 90°/hole made)

(punch shaft CW rotation by 180°/

end ofpunching operation)

Sensor flag

Punch home position
sensor (FPHPD)

Punch shaft

Eccentric cam

Hole
puncher

Die

Die

Paper

Waste paper

(punch shaft at rest/

home position)

(punch shaft CW rotation

by 90°/hole made)

(punch shaft CW rotation by 180°/

end of punching operation)

Sensor flag

Punch shaft

Eccentric cam

Hole
puncher

Die

Die

Paper

Waste paper

Punch home position
sensor (FPHPD)

(punch shaft at rest/

home position)

(punch shaft CW rotation

by 90°/hole made)

(punch shaft CW rotation by 180°/

end of punching operation)

Sensor flag

Punch shaft

Eccentric cam

Hole
puncher

Die

Die

Paper

Waste paper

Punch home position
sensor (FPHPD)

(punch shaft at rest/

home position)

(punch shaft CW rotation by 90°/

punch at upper limit)

(punch shaft CW rotation by 180°/

punch back to initial position)

(punch shaft at rest/

home position)

(punch shaft CCW rotation

by 90°/hole made)

(punch shaft CCW rotation by 180°/

end of punching operation)

(punch shaft CCW rotation by

90°/punch at upper limit)

(punch CCW rotation by 180°/

punch back at initial position)

(punch shaft at rest/

home position)