Mp450 Operation Panel Board L - Canon PIXMA MP170 Service Manual

2-2. MP450 Operation Panel Board L

J1 (Logic board)
No.
1 3.3V
2 5V
3 VSEN
4 SNS_HPS
5 POWER_SW
6 STOP_SW
7 POW_LED
8 ERR_LED
9 PANEL_RSTX
10 PANEL_INTX
11 SD_CMD
12 to 15 SD_D0to D3
17 SD_CLK
16, 18 GND
J2 (LCD)
No.
1 LED_SHDNX
2 LED_PWR
3 VDD
4 Vss
4 LED_Vss
6 to 13 DB0 to 7
14 RDB
15 WDB
16 RS0
17 RSTB
18 CS1B
J3 (Operation board R)
No.
1 to 4 RA4 to 7
5 to 7 CA4 to 6
8 SW_STP
9 HPS
10 VSEN
11 GND
Signal name
Signal name
Signal name
Function
+3.3V
+5.5V
Sensor power supply
Scanner HPS
Power button
Stop/Reset button
Power LED output
Alarm LED output
Reset signal
Interrupt signal
Command data switch
Data signal
Clock signal
Ground
Function
LED illumination control
LED power supply
+3.3V
Ground
Ground
Data signal
Data read
Data write
Register select
Reset signal
Chip select
Function
Key scan row address
Key scan column address
Stop/Reset button signal
Scanner HPS
Sensor power supply
Ground
3-8