MX-FN19, MX-FN20, MX-PN12. All Sections - Sharp Copying Equipment Specification (repair manual). Page 17

MX-FN19  ADJUSTMENTS AND SETTINGS  3 – 4

To enter the service mode, turn ON the power supply while the
dipswitch1 of FIN is ON.

Perform the following when the punch control PCB, transmission
sensor (photosensor PCB/LED PCB), or reflection sensor (waste
full photosensor PCB unit) has been replaced.
1) Remove the rear cover of the puncher after ensuring that the

power supply of the host machine is OFF.

2) Set the SW601 of the punch control PCB as shown below.

3) Turn ON the host machine.
4) Press the SW602 on the punch control PCB. The sensor out-

put is automatically adjusted.
* The adjustment is complete when the LED 601 and LED 602

on the punch control PCB blink alternately.

5) Press the SW602 or SW603 on the punch control PCB to end

the adjustment mode. Then, set all the bits of the SW601 to
OFF.

6) Turn OFF the host machine.

Perform the following to register the type of punch module (number
of holes) used to the IC on the punch control PCB for identification
by the finisher. Be sure to register the type whenever you have
replaced the punch control PCB.
1) Remove the rear cover of the puncher after ensuring that the

power supply to the host machine is turned OFF.

2) Set the SW601 of the punch control PCB as shown below.

3) Turn ON the host machine.
4) Press the SW602 on the punch control PCB to select your

desired number of punch holes.
* Each press on SW602 moves the selection through the fol-

lowing (repeatedly from top to bottom).

5) Press the SW603 on the punch control PCB. Then, the num-

ber of punch holes is registered into the punch control PCB.
* The registration is complete when the LED 601 and LED

602 on the punch control PCB blink alternately.

6) Press the SW602 or SW603 on the punch control PCB to end

the adjustment mode. Then, shift all the bits of the SW601 to
OFF.

7) Turn OFF the host machine.

Number of punch holes

LED601/602

2 holes (punch module L1)

Blinks once in a cycle

2/3 holes (punch module M1)

Blinks twice in a cycle

4 holes (punch module N1 (FRA))

Blinks thrice in a cycle

4 holes (punch module P1 (SWD))

Blinks four times in a cycle

ON

1

2

3

4

ON

1

2

3

4