Sharp SD-AT50 Service Manual page 13

D5 LED7
LED6
LED DRIVER
Q7
LED DRIVER
Q6
D DRIVER
Q5
N
ES
+5V(D)
SW1
LED8
H.P SW
Figure 13 BLOCK DIAGRAM (3/9)
– 13 –
SW2~SW5
SD-AT50
CN502A
KEY_1
1
+5V(D)
2
GND(U-COM)
3
STRLED
4
H.P SW
5
STDLED
6
R-CH
7
GND(D)
8
L-CH
9
VIRLED
10
GND(A)
11
DPLLED
12
LCDRESET
13
DDLED
14
LCDCS
15
DTSLED
16
LCDSCL
17
TIMERLED
18
LCDSDA
19
20 +3.7V(UN-SWD)
21 +3.3V(SWD)
22
POWERKEY
23 RXIN
24
BACK_LIGHT
25
LED9V