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Mp450 Operation Panel Board L - Canon PIXMA MP170 Service Manual

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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

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