Service manual

CHAPTER 2
2 - 4
COPYRIGHT © 2001 CANON INC. CANOSCAN D1230U/D2400U REV.0 MAR. 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
C. Main PCB Input and Output
1. CanoScan D1230U
Figure 2-3
JP8-1
-2
-3
-4
Drive Motor
Power
LED
Home Position
Sensor
"H" when scanning unit is in
home position
Drive motor drive signal
JP2-1
-2
-3
Start
Button
Button PCB
VCC
LED
HOTKEY0
+12V
GND
"H" when power LED is ON
"H" when Start button is pressed
Vbus
D-
D+
GND
J1-1
-2
-3
-4
-5
-6
-7
-8
XPAGND
XPAGND
FAU_DET
VCC
CN
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
12V_LAMP
12V_LAMP
+18VP
+18VP
C-DGND
PHI1
PHI2
PHI3
CN
C-DGND
AGND
CCD-SHB
CLB
CCD-SHG
RB
CCD-SHR
VCC
C-DGND
AGND
C-DGND
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