Canon CANOSCAN FB330 series Service Manual page 33

2. CanoScan FB630U/FB636U
Button PCB
HP1
Home
position
sensor
BT1
Start
button
CS1
Scanning unit drive motor
Contact image sensor
COPYRIGHT © 1999 CANON INC. CANOSCAN FB330/FB630 SERIES REV.0 OCT. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
J2-1
HMSEN
-2
GND
-3
VCC
-4
BTON
J3-1
LEDG
-2
LEDR
-3
LEDB
-4
LED COMMON
-5
CP
-6
RS
-7
CLK
-8
SP
-9
GND
-10
VAD
-11
VDD
-12
OS
-13
GND
-14
GND
-15
GND
-16
GND
-17
AP
-18
AN
M1 -19
BP
-20
BN
Figure 2-5
Main PCB
"H" when scanning unit is in home position.
"L" when start button is pressed.
Scanning unit drive motor drive signal
CHAPTER 2
+5V J1-1
D- -2
To host
D+ -3
computer
GND -4
2 - 5