Main Pcb Input And Output - Canon CanoScan 9900F Service Manual

CHAPTER 2
C. Main PCB Input and Output
AC Adapter
Scanning Unit
Scanner
button
COPY
SCAN
FILE
E-MAIL
Power
LED
Power Switch
Button PCB
H o m e P o s i t i o n
S e n s o r
Drive motor
2 - 4
J2-1
+24V
-2
+24V
-3
+24V
-4
NC
-5
GND
JP1-1
LAMP_GND
-2
LAMP_GND
-3
LAMP_PWR
-4
LAMP_PWR
-5
CCD_PWR
-6
CCD_PWR
-7
AGND
-8
CCD_CK1
-9
CCD_CK2
-10
AGND
-11
VAROS_PWR
-12
AGND
-13
ASIC_VAROS
-14
B_TG
-15
CLB
-16
G_TG
-17
RB
-18
R_TG
-19
VCC
-20
AGND
-21
MTATHOME
-22
AGND
-23
AGND
-24
OUT_B
-25
AGND
-26
OUT_G
-27
AGND
-28
OUT_R
JP2-1
HOTKEY0
-2
HOTKEY1
-3
HOTKEY2
-4
HOTKEY3
-5
LED
-6
DGND
-7
DGND
-8
PWRSW
JP6-1
OUT1B
-2
OUT1A
-3
OUT2A
-4
OUT2B
Figure 2-3
COPYRIGHT 2003 CANON INC. CANOSCAN 9900F REV.0 FEB. 2003 PRINTED IN JAPAN (IMPRIME AU JAPON)
Main PCB
XPA J1-1
FAU_LED -2
FAU_DET -3
NC -4
LMP_PWR -5
XPAGND -6
NC -7
XPAGND -8
Vbus JP9-1
D- -2
D+ -3
GND -4
VP JP9-1
VG -2
TPBN -3
TPB -4
TPAN -5
TPA -6
"H" when Scanner button is
pressed
"H" when power LED is ON
"H" when scanning unit is in
home position
Drive motor drive signal
To Film Scanning
Unit
To Host
Computer
To Host
Computer