Read Sharp AR-F12 (serv.man5) Service Manual online
4-2
CHAPTER 4 PUNCHER UNIT (OPTION) BASIC OPERATION
B.
Inputs to and Outputs from Punch Driver PCB
1.
Inputs to Punch Driver PCB (1/3)
Punch driver PCB
PI1P
-2
J102-3
+5V
SREGHP
SREGHP
-1
-2
J1A-1
-3
SREG1*
SREG2*
SREG3*
SREG2*
SREG3*
-9
-10
-11
J7-12
-13
-5
SREG4*
-8
-6
PAEND*
-7
-7
-4
-3
J115-2
-1
-5
-6
-7
-6
-7
-4
-3
J11-2
-1
Horizontal
registration home
position sensor
registration home
position sensor
PI3P
MS2P
-3
J104-2
+5V
PUNCHHP*
PUNCHHP*
-1
-3
J1B-2
-1
+24V
+5V
+5V
PTR1
PTR2
PTR3
PTR4
PTR5
UDROPN
FDROPN
Always “1”.
When the hole puncher is
at the home position, “0”.
at the home position, “0”.
When the punch slide
unit is at the home
position, “1”.
unit is at the home
position, “1”.
When the front door is
closed, “1”.
closed, “1”.
When a paper is detected,
“0”.
“0”.
-2
J5-1
Front door
switch
switch
Photosensor PCB
N.O.
-4
J5-3
Punch home
position sensor
position sensor
PI2P
-2
J105-1
+5V
PUNCHCLK
PUNCHCLK
-3
-5
J1B-6
-4
When the punch motor
is rotating, alternatly
between “1” and “0”.
is rotating, alternatly
between “1” and “0”.
Punch motor
clock sensor
clock sensor
Figure 4-102
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