HT-S20R
31
Sony CONFIDENTIAL
For Authorized Servicer
4-9. PRINTED WIRING BOARD - TOUCH KEY Board (SA-WS20R) -
•
: Uses unleaded solder.
• See page 25 for Circuit Boards Location.
TOUCH KEY BOARD
(SIDE A)
TOUCH KEY BOARD
(SIDE B)
A
1
2
3
4
4-10. SCHEMATIC DIAGRAM - TOUCH KEY Board (SA-WS20R) -
TP22
4P/1.25
TP
16
TP
18
TP
20
C4
05
TP
15
TP
17
TP
19
R403
R
410
R
411
R
412
TP3
TP5
CN401
CN7/125V
eKTF5616
IC400
eKTF5616
R413
TP6
R414
TP7
R415
R416
TP8
TP10
TP400
BT
TP4
VOL-
R417
TP11
TP401
VOL+
R418
TP12
TP402
C4
02
C4
03
C4
04
Source
R419
TP13
TP403
Power
R420
TP14
TP404
FB401
C4
07
C408
10U/6.3V
ASGND
C
406
R421
TP26
TP405
10
4
0
10
K
10
K
10
K
1
2
3
4
5
6
7
100
100
100
10K
10K
10K
22
P
22
P
22
P
10K
10K
100
10
4
10
4
10K
SCL_UR
SDA_UR
B_LED
INT_TH
SCL_TH
SDA_TH
UART
For Touch debug
Connect Jack
EB1: to OLED+IR board
SB1: to MAIN board
CN400
BK3.3V_T
BK3.3V_T
BK3V3_T
BK3.3V_T
BK3V3_T
1
2
3
4
GND
9
GND
8
P71/TK10
1
P70/TK9
2
P67/TK8
3
P66/TK7
4
P65/TK6
5
P64/TK5
6
P63/
TK
4
7
P62/
TK
3
8
P61/
TK
2
9
P60/
TK
1/
T
C
1
10
VDD
11
VSS
12
P50//Reset/RX//SS
13
P51/TX/SI
14
P52/SDA0/SO
15
P53/SCL0/SCK
16
P54/SDA1/INT0
17
P55/OSCO/SCL1/INT1
18
P80/
TK
13/
PW
M
A
/A
D
0
19
P81
/TK
14
/P
W
M
B/AD1
20
P8
2/
TK
15
/A
D
2
21
P
83/
T
K
16/
A
D
3
22
P8
4/
VREF/
A
D4
23
P85/
A
D
5
24
PA
D GN
D
25
1
1
1
1
1
1
A
D
B
C
1
2
3
4
5
6
TOUCH KEY BOARD
SYS SET
2021/02/10 22:25:21 (GMT+09:00)