BenQ Q74A Service Manual page 31

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R3
3K
J2
4
3
2
1
CON4
GND
SW5
STS-1102A-1
LED1
SAM5270
1
GND
R carbon
film(T-52
Small)
R2
1.5K
SW4 SW3
STS-1102A-1
STS-1102A-1
GND
R1
1.5K
SW2 SW1
STS-1102A-1 STS-1102A-1
GND
GND
J3
KEY 1
4
CON4
LED_Green
3
LED_RED
3
2
1
-31-
Q74A Service Manual
5V
J1
1
KEY 1
6
KEY2
5
LED_GREEN
3
LED_RED
2
4
7
CON8