Main Pcb Input And Output - Canon CANOSCAN N1220U Service Manual

C. Main PCB Input and Output
J1-1
To host computer
CS1
Contact image sensor
COPYRIGHT 2000 CANON INC.
USB connector PCB
J2-1
Vbus
-2
-2 D-
-3
-3 D+
-4
-4 GND
-5
-6
-7
-8
M1
Drive motor
Q4
Home
position
sensor
S1
Start
button
Figure 2-3
CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
Main PCB
J1-1
GND
-2
+5V
-3
GND
-4
D-
-5
D+
-6
GND
-7
+5V
-8
+5V
J2-1
PA+
-2
PB-
-3
Drive motor drive signal
PB+
-4
PA-
J3-1
Vob
-2
Misc6
-3
GND
-4
Vcis
-5
Vref
-6
TR
-7
PHI1
-8
Vled
-9
BEN
-10
GEN
-11
REN
-12
GND
HPSEN "H" when scanning unit is in home position
GND
SCANSW "L" when start button was pressed
GND
CHAPTER 2
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