Ncu Sub Board - Canon Pixma MP530 Service Manual

3-3. NCU Sub Board

CN402 (PictBridge Harness)
No. Signal name
1 S_GND
2 D+
3 D-
4 VBUS
CN902 (Speaker )
No. Signal name
1 SPV01
2 SPV02
CN903 (to Logic Board)
No. Signal name
1 +5V
2 DIODE1
3 DIODE0
4 DIA1
5 DIA0
6 GND
7 SCAN_OPEN
8 BUZZER
9 SPSTP
System ground
D+ signal
D- signal
PictBridge Vbus signal
Speaker drive signal 1
Speaker drive signal 2
VCC +5V
Diode sensor signal 1
Diode sensor signal 0
Diode sensor anode 1
Diode sensor anode 0
Ground
Scanner open switch signal
Keypad/Alarm volume control
Speaker stop signal
3-10
Function
Function
Function
Input / Output
-
BUS
BUS
OUT
Input / Output
IN
OUT
OUT
IN
IN
-
OUT
IN
IN