Sharp LC-32SV502B, Service Manual

Page: 99 / 140

LC-32SV502B/LC-42SV502B/LC-42SV602B/LC-46SV602B/LC-46SV502L
99
[3] KEY SCHEMATIC DIAGRAM
R122
2.94K 1%
CH - CH + VOL- VOL + Power Input Menu
1.87 1.4 0.93 0.47 0.47 1.4 0.93
R116
NC/ 2K7 1/16W 5%
1
2
3
4
5
6
7
8
9
CN0101
CONN
SM_SDA
SM_SCL
OTP
KEY2
KEY1
R120
330 OHM 1/16W
R119
820R 1%
R124
NC/ 2K2 1/16W 5%
R115
330 OHM 1/16W
M E N U I N P U T V O L -
R121
820R 1%
V O L + C H - C H +
CIN_03
1
CB104
TOUCH PAD 6X12-OVAL
1
CB106
TOUCH PAD 6X12-OVAL
1
CB105
TOUCH PAD 6X12-OVAL
1
CB107
TOUCH PAD 6X12-OVAL
1
CB101
TOUCH PAD 6X12-OVAL
1
CB102
TOUCH PAD 6X12-OVAL
1
CB103
TOUCH PAD 6X12-OVAL
P O W E R
1
Touch Pad Shieldelectrode
CIN_07 CIN_01
CIN1
1
CIN2
2
CIN3
3
CIN4
4
CIN7
5
CIN9
6
CI
N1
1
7
VSH
IL
D
8
VBI
AS
9
AVSS
10
AVC
C
11
GPI
O
1
1
12
DVCC
13
GPIO9
14
SCLK
15
SDA
16
INT#
17
GPIO7
18
GPI
O
4
19
D
VSS
20
GPI
O
3
21
GPI
O
2
22
NC
23
THD1
24
E-PAD
25
U102
IT7235BFN-3108/AX (R)
Key 2
Key 1
3.3V
GPIO_09
GPIO_03
3.3V
GPIO_11
GPIO_02
GPIO_13
GPIO_04
3.3V
GPIO2,3,4,7,9,11, 13 output data format
is like mechanical switch output form,
i.e., No touch: Open, Touch: GND.
9
GPIO output
2
2 7
1
CIN_04
13
CIN_11 CIN_09
11 9
LED output
CIN_02
11
4
7
3
CIN(+)
Voltage
CIN(-)
4 3
AC_SHIELD
Cap Pads
C101
0.1uF 25V
C105
0.1uF 25V
VBIAS
AC_shield is a large
cooper which encircles the
Cin button and it's path.
R112
100OHM1/16W
C104
100P 50V
GPIO_07
M E N U
I N P U T
P O W E R
C H +
C H -
V O L +
V O L -
R118
1.65K 1%
CIN_01
CIN_03
CIN_02
CIN_04
CIN_07
CIN_09
D
VSS
GPI
O
_1
3
OT
P
SM_SDA
SM_SCL
GPIO_07
GPIO_09
3.
3V
AVS
S
VBI
AS
AC
_S
H
IELD
GPI
O
_1
1
CI
N_
11
C102
0.1uF 25V
R117
1.65K 1%
3.
3V
C103
0.1uF 25V
GPI
O
_0
2
GPI
O
_0
3
GPI
O
_0
4