5-11. Schematic Diagram - Key Board - Sony DSX-A50BT Service Manual

5-11. SCHEMATIC DIAGRAM - KEY Board -

1 2
KEY BOARD
A
CN001
15P
GND 15
NC 14
GND 13
P ANEL_SW 12
ILL 11
B
A
LCD_CLK 10
LCD_CE 9
MAIN
LCD_DA T A 8
BOARD
(2/3)
SIRCS 7
CN103
R912
KEY_0 6 100
(Page 18)
KEY_1 5
RE_0 4
RE_1 3
C
KEY_GND 2
KEY_GND 1
D
E
F
S901
SOURCE
OFF
R968
220
G
H
DSX-A50BT
• See page 16 for waveforms. • See page 26 for IC Block Diagrams.
3 4 5
CL
R913
CE
68
DI
R914
68
R915
68
R916
82
R917
820
3
R901 R902 R903 R904 R905 R906
820 1k 1k 1.2k 1.5k 1.8k
1
S902 S903 S904 S905 S906
ROT ARY ENCODER
CALL
SEEK– SEEK+
/MODE
PUSH ENTER/
R965
220
LSW901 LSW902 R966 LSW903
220
SCRL SHUF/MIC P AUSE
DSPL 4 3
6 5 6 5 6 5
R967
220
4 3 4 3 4 3
2 1 2 1 2 1
R907 R908
820 1k
6 7 8
R920
0
LED902
SCM015B17TT86P R955
470
SEEK+
LED904
SCM015B17TT86P
R952
330
/MODE
LED901
NESW505DT-A0-UV
(LCD BACK LIGHT)
LED903 LED905
SCM015B17TT86P SCM015B17TT86P
SEEK-
0
5.1
Q901
RT1N140C-TP-1 R951 R954
330 470
DIMMER CONTROL
IC902
R938
0
7
REMOTE CONTROL
RECEIVER
5 1 2 3
IC902
PNA4813M01S0
2
4 R928 R929
150 150
6
S907
D902 C901 C902
SELECT
RKZ5.1B2KGP1 0.1 0.1
(VOLUME)
R962
220
LSW904 R963 LSW905
220
ALBUM ALBUM
2 1
6 5 6 5
R964 R961
220 220
4 3 4 3
2 1 2 1
R909 R910 R91 1
1k 1.2k 1.5k
25 25
9 10 11
LED906
SCM015B17TT86P
CALL
COM3 2.5
LED907
COM4 2.5
SCM015B17TT86P
SEG2 2.5
SOURCE
OFF
5.1
3.4
1.7
3.6
4.7
R958
330
R935 100
CE 0
R950 100
CL 3.3
R936 100
DI 0
R957
330
IC B/D
11
R933
1k
R930 R932
1M 1k
C905 C903 C904 R934 R931 C912
0.47 0.1 0.1 1k 39k 1000p
LSW906 R960
220
PTY
(AEP , UK)
AF/TA
(E, IND)
PTY
6 5
4 3
36 35 34 33 32 31 30 29 28 27 26 25 24
2 1
DSX-A50BT
12 13 14
36 35 34 33 32 31 30 29 28 27 26 25
2.5 SEG13
37 COM3 SEG24 24
2.5 SEG14
38 COM4 SEG23 23
2.5 SEG15
39 SEG35 SEG22 22
2.5 SEG16
40 VDD SEG21 21
2.5 SEG17
IC901
41 VDD1 SEG20 20
42 VDD2 SEG19 19
LIQUID CRYST AL DISPLAY DRIVER 2.5 SEG1
43 VSS SEG18 18
IC901
2.5 SEG25
PT6586-LQ
44 OSC SEG17 17
2.5 SEG26
45 INH SEG16 16
2.5 SEG27
46 CE SEG15 15
2.5 SEG28
47 CL SEG14 14
2.5 SEG29
48 DI SEG13 13
1 2 3 4 5 6 7 8 9 10 11 12
CL001
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
LCD901
LIQUID CRYST AL DISPLAY