Service manual

CHAPTER 2
2 - 4
COPYRIGHT  2002 CANON INC. CANOSCAN 8000F REV.0 OCT. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
C. Main PCB Input and Output
Figure 2-3
JP8-1
-2
-3
-4
Power
LED
Home Position
Sensor
"H" when scanning unit is in
home position
Drive motor drive signal
JP2-1
-2
-3
-4
-5
-6
Scanner
Button
Button PCB
GND
LED
HOTKEY0
HOTKEY1
HOTKEY2
HOTKEY3
+12V
GND
"H" when power LED is ON
Vbus
D-
D+
GND
J1-1
-2
-3
-4
-5
-6
-7
-8
XPA
XPAGND
FAU_DET
VCC
IRLED
XPAGND
XPAGND
XPAGND
AC Adapter
JP1-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
-22
-23
-24
-25
-26
-27
-28
LAMP_GND
LAMP_GND
LAMP_PWR
LAMP_PWR
CCD_PWR
CCD_PWR
AGND
PHI1
PHI2
PHI3
VAROS_PWR
AGND
ASIC_VAROS
CCD_SHG
CCD_CP
CCD_SHG
CCD_RS
CCD_SHR
VCC
AGND
MTATHOME
AGND
AGND
CCD_B
AGND
CCD_G
AGND
CCD_R
OUT1B
OUT1A
OUT2A
OUT2B
JP9-1
-2
-3
-4
To FAU
To Host Computer
J2-1
-2
Main PCB
Scanning Unit
Drive motor
COPY
SCAN
FILE
E-MAIL
"H" when Scanner button is
pressed