Key Board - Haier LET32/40T900 Service Manual

10.4 Key Board

715G4749K0D000004M
U0102
CIN_01 1
CIN_02
2
CIN_03 3
CIN_04
4
CIN_07 5
CIN_09
6
IT7235BFN
VBIAS
C0101
100N16V
Touch Pad Shieldelectrode
Cap Pads
VOL+ CH-
CB0104 CB0106
CIN_04 1 CIN_02 1
TOUCH PAD 6X12-OVAL TOUCH PAD 6X12-OVAL
18 GPIO_07
CIN1 GPIO7
17
CIN2 INT#
16 SM_SDA
CIN3 SDA
SM_SCL
15
CIN4 SCLK
14 GPIO_09
CIN7 GPIO9
13
CIN9 DVCC
C0102
100N16V
C0103
100N16V
AC_SHIELD
R0112
100R
C0104
100P 50V
CH+ POWER
CB0105 CB0107
CIN_03 1 CIN_01 1
TOUCH PAD 6X12-OVAL TOUCH PAD 6X12-OVAL
R0115
R0120
R0122
10K
GPIO_13
3.9K
1.8K 1/16W
GPIO_02
GPIO_03
GPIO_11
R0119
R0118
3.9K
10K
GPIO_07
GPIO_09
GPIO_04
MENU
INPUT
CB0101 CB0102
CIN_07 1 CIN_09 1
TOUCH PAD 6X12-OVAL TOUCH PAD 6X12-OVAL
104
3.3V
R0110 0.05R
SM_SCL
SM_SDA
C0105
R0111 0.05R
100N16V
3.3V
Key 1
R0121
680R 1/16W 5%
R0123
NC/0R05 1/16W
3.3V
R0125
0.05R
R0117
1.8K 1/16W
GPIO2,3,4,7,9,11, 13 output data format
is like mechanical switch output form,
i.e., No touch: Open, Touch: GND.
VOL+ CH-
CIN(+) 4 2
CIN(-)
LED output
GPIO output 11 13
VOL-
Voltage
0.65 2.61
CB0103
CIN_11 1
TOUCH PAD 6X12-OVAL
CN0101
1
2
Key 1
3
Key 2 4
OTP
5
6
7
CONN
Key 2
Input MENU
CH+ POWER VOL-
3 1 7 9 11
2 4 7 9 3
1.96 1.96 1.31 2.61 1.31