Schematic Diagram - Key Board - Sony MEX-BT39UW Service Manual

5-9.

SCHEMATIC DIAGRAM - KEY Board -

1 2 3
KEY BOARD
A
FB902
FB901
J901
AUX
R905
0
FB903
B
CN901
20P
USB_GND 1
USB_VBUS 2
D- 3
D+ 4
GND 5
KEY_GND 6
AUX_L 7
C
AUX_R 8
9
AUX_GND
MAIN
BOARD A RE_0 10
(3/3)
RE_1 11
CN102
KEY_1 12
(Page 27)
KEY_0 13
R995 1k
SIRCS 14
LCD_DATA 15
LCD_CE 16
LCD_CLK 17
D
ILL(FP+B) 18
PANEL_SW 19
GND 20
E
5
CN902
4P
GND-USB
D+
7
D–
VBUS-USB
6
F
G
H
I
J
MEX-BT39UW/BT3900U/BT3950U
• See page 30 for IC Block Diagrams.
4 5 6
LED913 LED912
CL-197HB1E-D-T SML-D12V8WT86SN
SEEK– SEEK–
. .
m m
C915
R901 R927 R902
1000p
1k 470 1k
C916 LED939 LED940
1000p
SL-194S-WS-SD-T SL-194S-WS-SD-T
MODE MODE
C912
R903 R912
0.1
1.2k
1.2k
R977 R935 R936
1.5k 470 1.5k
LED911 LED910
CL-197HB1E-D-T
SML-D12V8WT86SN
SEEK+ SEEK+
M
M
>
>
DATA
CE
CLK
R979
470
R987
470
R941 R942 R949 R978 R989
180 820 180 820 560
R943 R976 R951 R994
180 820 180 820
VDR906
VDR908
R999
10
R980 R983 R952 R954
2.2k 1k
820 470
R981 R984 R953 R955 R956
820 1.8k 1.2k 470 820
RE901
ROTARY ENCODER
R982 R985 R957
PUSH ENTER/ 820 1.8k 820
SEL/
(VOLUME)
R944
10
7 8 9
R986 100
5 3 1
LSW905
Z
SCRL
DSPL
6 4 2
R920
S901
820
R960 R962
R938 180 150
R928
820
820
R961 R963
OFF 150
180
SOURCE
5 3 1
LSW906
R921 PAUSE
S902
1k 6
6 4 2
SEEK+ R929
1k
M
>
R948
1.5k
5 3 1
LSW907
R922 MIC/ZAP
S903
1k 5
R974 R972
6 4 2 820
180
R975 R973
R930
820 180
1k
/MODE
R923
S904 5 3 1
1.2k LSW908
ALBUM +
4
6 4 2
SEEK–
.
m R931
1.2k
R996
820
R924
S905 5 3 1
1.5k LSW909
ALBUM –
3
6 4 2
R990
R965 R966 R932
1k
150 1.5k
180
R925
S906
1.8k
5 3 1
LSW910
SHUF
R991
1.2k 2
BT
6 4 2
R926
S907
2.2k
R964 R967
180 150
5 3 1
LSW911
REP
1
6 4 2
R933
1.8k
R968 R970 R934
220 2.2k
470
LSW912
BT39UW/BT3900U: 5 3 1
CAT
US, CND
PTY
R958
BT3900U:
820 PTY
AEP, RU, UK
6 4 2
AF/TA
(BT3950U)
PTY
R959
820
R969 R971
470 220
D921
RKZ6.8B2KGP1
29 29
MEX-BT39UW/BT3900U/BT3950U
10 11 12
R940 R906
150 150
5.2 1
VCC
4.7 3
OUT
2
GND
IC902
IC902
PNA4813M01S0
REMOTE CONTROL
SIGNAL RECEIVER
48 47 46 45 44
R908
120
S[4] 2.6
SEG4
49
S[3]
2.6
SEG3
50
COM[4] 2.6
COM4
51
COM[3] 2.6
COM3
52
D902
R909 C906 COM[2] 2.6
COM2
RKZ5.1B2KGP1 53
120 0.1
COM[1] 2.6
COM1
54
S[2]
2.6
SEG2
55
C903 0.1 5.2
R910 VDD
56
120 C902 0.1
3.5
VDD1
57
C901 0.1 1.8
VDD2
58
VSS
59
C904 0.47 S[1] 2.6
SEG52
60
2.6
INH
61
CE R915 100
0
LCD_CE
62
CLK R916 100 3.2
LCD_CLK
1
63
DATA R917 100 3
LCD_DATA
64
C911 100p
C910 100p
C909 100p
IC B/D 1 2 3 4 5
Q901
RT1N140C-TP-1
0.1
LCD BACK LIGHT
DIMMER CONTROL
R911 5.2
1.5k
R998
0
0
Q904
Q903 RT6N140C-TP-1
RT6N140C-TP-1 LED DRIVER
8.9
LED DRIVER
5.2
0
52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20
Note: Refer to the servicing notes "NOTE FOR REPLACEMENT OF
THE USB CONNECTOR (CN902) AND THE AUX JACK (J901)"
(See page 5), if replacing the Ref. No. CN902 and the Ref. No. J901.
13 14
43 42 41 40 39 38 37 36 35 34 33
2.6 S[21]
32
SEG21
S[22]
2.6
SEG22 31
2.6 S[23]
SEG23 30
2.6 S[24]
SEG24 29
2.6 S[25]
SEG25 28
2.6 S[26]
SEG26 27
IC901 S[27]
2.6
SEG27 26
2.6 S[28]
IC901 25
SEG28
S[29]
LC75829PWH-US-H 2.6
SEG29 24
LCD DRIVER,LED CONTROL
2.6 S[30]
SEG30 23
2.6 S[31]
SEG31 22
2.6 S[32]
SEG32 21
2.6 S[33]
20
SEG33
S[34]
2.6
SEG34 19
2.6 S[35]
SEG35 18
2.6 S[36]
SEG36 17
6 7 8 9 10 11 12 13 14 15 16
19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
LCD901
LIQUID CRYSTAL DISPLAY PANEL