Schematic Diagram - Key Board - Sony MEX-BT31PW Service Manual

5-12. SCHEMATIC DIAGRAM - KEY Board -

1 2 3
KEY BOARD
A
R906
FB902
B
J901
FB901
AUX
FB903
C
CN901
20P
USB_GND 1
USB_VBUS 2
D_GND 3
KEY_GND 4
AUX_L 5
D
AUX_R 6
AUX_GND 7
RE_0 8
A
RE_1 9
MAIN KEY_1 10
BOARD
KEY_0 11
(2/5)
CN102 SIRCS 12
(Page 34)
LCD_DATA 13
E
LCD_CE 14
LCD_CLK 15
ILL 16
PANEL_SW 17
D– 18
D+ 19
GND 20
F
L903
3
C911
1000p
CN903 1
1
4P
2
G
3
4
H
I
J
MEX-BT31PW/BT3100P/BT3100U/BT3150U/BT3153U
• See page 42 for IC Block Diagrams.
4 5 6
LED931, 933, 935, 937, 939, 941, 943, 945, 947, R931 R933
LED951, 953, 955, 957, 959, 961, 963, 965 220 (BT31PW/BT3100P) 220 (BT31PW/BT3100P)
P1L015BC7TT86C (BT31PW/BT3100P) 680 (BT3100U/BT3150U/BT3153U) 820 (BT3100U/BT3150U/BT3153U)
SML-D12V8WT86TN (BT3100U/BT3150U/BT3153U)
1k
R931 R935
LED931
OFF
SOURCE
BT3100U/
BT3150U/
LED933 BT3153U
R930
220
MODE
C916
LED930
1000p
P1L015BC7TT86C
OFF
SOURCE
C912
0.1
LED932
P1L015BC7TT86C
MODE
R933 R932 R937
220
R943 R947 R942
680
DATA
LED943 LED947
CE
(ILLUMINATION)
CLK
LED945
R949
(ILLUMINATION)
R945 R951 R944
680
LED951
R953 R957
BT31PW/BT3150U/
PTY
BT3153U
CAT
4
PTY
(BT3100P)
PTY
2
AF/TA
(BT3100U)
BT3100U/
LED953
BT3150U/
BT3153U
ALBUM
1 R952
470
LED950
P1L015BC7TT86C
BT3150U/
PTY
BT3153U
PTY
AF/TA
(BT3100U)
LED952
P1L015BC7TT86C
ALBUM
1
R955 R954 R959
470
R947
R949, 955, 959, 963, 977 R951
330 (BT31PW/BT3100P)
470 (BT31PW/BT3100P) 560 (BT31PW/BT3100P)
1.2K (BT3100U/BT3150U/BT3153U)
1.2K (BT3100U/BT3150U/BT3153U) 1.2K (BT3100U/BT3150U/BT3153U)
7 8 9 10
R935, 943 R937, 945 R939 R941
680 (BT31PW/BT3100P) 680 (BT31PW/BT3100P) 470 (BT31PW/BT3100P) 470 (BT31PW/BT3100P)
1k (BT3100U/BT3150U/BT3153U) 1.2k (BT3100U/BT3150U/BT3153U) 680 (BT3100U/BT3150U/BT3153U) 820 (BT3100U/BT3150U/BT3153U)
R916
R939
820
S901
LED939
LED935
CALL
LED941
R917
1k
SEEK+
S902
BT3100U/
BT3150U/
OFF
LED937 BT3153U
SOURCE
BT3100U/
R934 BT3150U/
SEEK–
680 BT3153U
R918
1k
R938
470
S903
LED934
P1L015BC7TT86C
LED938
P1L015BC7TT86C
SEEK+
R919
SEEK+ CALL
1.2k
S904
LED936 LED940
P1L015BC7TT86C P1L015BC7TT86C
MODE
SEEK–
R936 R941 R940 R920
680 470 1.5k
S905
SEEK–
R921
R946
1.8k
S906
330
LED942 LED946
P1L015BC7TT86C SML-D12D8WT86TQ
(ILLUMINATION)
R922
2.2k
S907
LED944
P1L015BC7TT86C R948
CALL
470
(ILLUMINATION)
R950
560
BT3100U/
BT3150U/
BT3153U
LED965
R961
LED955
LED959 SCRL
DSPL
ALBUM
SHUF
2
4 LED963
LED957
LED961
PAUSE
6
MIC/ZAP
3
5
BT3100U/ BT3100U/ BT3100U/
BT3150U/ BT3150U/ BT3150U/
BT3153U BT3153U BT3153U
(BT3100U) R956 (BT3100U) R960 LED964
470 470 P1L015BC7TT86C
SCRL
LED954 LED958
DSPL
P1L015BC7TT86C P1L015BC7TT86C
LED962
ALBUM SHUF
P1L015BC7TT86C
2 4
PAUSE
LED956 LED960
6
P1L015BC7TT86C P1L015BC7TT86C
R967 R966
470
5
3
R958 R963 R962 R977 R976
470 470 470
R953, 957, 961, 967
470 (BT31PW/BT3100P)
1K (BT3100U/BT3150U/BT3153U)
41 41
MEX-BT31PW/BT3100P/BT3100U/BT3150U/BT3153U
11 12 13 14
R973
100
IC902
LED901
NHSW157AT
1 3 2
REMOTE CONTROL
(LCD BACK LIGHT)
S909 RECEIVER
R971
IC902
SCRL 150
PNJ4813M01S0
DSPL
R923
820 R968 R972
120 150
S910
PAUSE S[4]
R969 R995 R996
6
120 1M 0
S[3]
R924
1k
COM[4]
C928
R970 0.1
S911 COM[3]
120
MIC/ZAP COM[2]
5
C921
COM[1]
R925 0.1
1k
S[2]
S912
C923
0.1
SHUF
4
R926
1.2k
C924
0.1
S913 S[1]
C922
0.47
3
CE
R927
1.5k
R997
470
S914
R998
ALBUM
470
2 CLK
R928
1.8k
R999
470
S915 DATA
ALBUM
C925 C926 C927
1
18p 18p 18p
R929
2.2k
S916
BT31PW/BT3150U/
PTY
BT3153U
CAT
PTY
(BT3100P)
PTY
AF/TA
(BT3100U)
BT3100U/
BT3150U/
BT3153U
0
Q930
5.2
LTC914TUBFS8TL
LED DRIVE
RE901
ROTARY
ENCODER
3 1 (BT31PW)
PUSH ENTER/
MENU
7 6
(VOLUME)
0
BT3100P/BT3100U/
5 2 4
BT3150U/BT3153U 5.2
PUSH ENTER/MENU/ Q931
APP LTC914TUBFS8TL
LED DRIVE
(VOLUME)
R975
0
53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29
LIQUID CRYSTAL DISPLAY PANEL
Ver. 1.1
15 16 17 18
35
48 47 46 45 44 43 42 41 40 39 38 37 36 34 33
2.6 2.6 S[21]
49 SEG4 SEG21 32
2.6 2.6 S[22]
31
50 SEG3 SEG22
2.6 2.6 S[23]
51 COM4 SEG23 30
2.6 2.6 S[24]
52 COM3 SEG24 29
2.6 2.6 S[25]
53 COM2 SEG25 28
2.6 2.6 S[26]
54 COM1 SEG26 27
2.6 2.6 S[27]
IC901
55 SEG2 SEG27 26
5.2 2.6 S[28]
56 VDD SEG28 25
3.4 LIQUID CRYSTAL DISPLAY DRIVER 2.6 S[29]
57 VDD1 SEG29 24
IC901
1.7 2.6 S[30]
PT16512-LQ
58 VDD2 SEG30 23
2.6 S[31]
59 VSS SEG31 22
2.6 2.6 S[32]
60 SEG1 SEG32 21
5 2.6 S[33]
61 INH SEG33 20
0 2.6 S[34]
62 LCD_CE SEG34 19
3.3 2.6 S[35]
63 LCD_CLK SEG35 18
0 2.6 S[36]
64 LCD_DATA SEG36 17
IC B/D
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
0
5.2
Q901
LTC014TUBFS8TL
LED DRIVE
28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
LCD901
Note: Refer to the servicing notes "NOTE FOR REPLACEMENT
OF THE USB CONNECTOR (CN903) AND THE AUX
JACK (J901)" on page 6, if replacing CN903 and J901.