Schematic Diagram - Key Section - Sony MEX-BT38UW Service Manual

MEX-BT38UW/BT3800U/BT3807U/BT3850U

4-11. SCHEMATIC DIAGRAM - KEY Section -

1
A
GND 1
USB_VBUS 2
GND 3
USB_GND 4
KEY_GND 5
B
USB_D+ 6
AUX_LCH 7
USB_D- 8
KEY1 9
MAIN
BOARD A AUX_RCH 10
(4/4) RE1 11
CN101
AUX_GND 12
(Page 30)
RE0 13
KEY0 14
LCD_CE 15
C
SIRCS 16
LCD_CLK 17
LCD_DATA 18
ILL_+B 19
PANEL(NOSE_SW) 20
D
E
VBUS-USB
CN902
D–
D+
GND-USB
F
JACK BOARD
FB902
G
FB901
J901
AUX
FB903
H
I
J
MEX-BT38UW/BT3800U/BT3807U/BT3850U
• See page 33 for IC Block Diagrams.
2 3 4
KEY BOARD
CN901
20P
C912
0.1
AUX_LCH
AUX_RCH
AUX_GND
CE D910
MAZ8068GMLS0
CLK
D906
DATA
MAZ8180GMLS0
VDR907
VDR901
VDR900
R945 R946
L901
10 10
3 4
CN902
6P 1 2
5
6
R948
470
CL-197HB1E-D-T
W003 W005 AUX_RCH
R949
470
W001 W004 AUX_LCH
CL-197HB1E-D-T
W002 W006 AUX_GND
5 6 7
5 3 1
SCRL
DSPL
6 4 2
R962 R928
180 820
5 3 1
R920
PAUSE
S901
820
6 4 2
R929
1k
5 3 1
LED905 LED903
CL-197HB1E-D-T CL-197HB1E-D-T
R921 MIC
(DISC SLOT INDICATOR) S902
1k
SOURCE
OFF 6 4 2
R983 R989 R963 R930
680 560 180 1k
R922
S903
1k
R984 R990
680 560
SEEK +
R985 R991
1k 680
5 3 1
R923
S904
SHUF
1.2k
R899
MODE
470 6 4 2
LED907
R931
CL-197HB1E-D-T
1.2k
R900
(ILLUMINATION)
470
R924
S905
1.5k
SEEK –
5 3 1
REP
LED932 LED909
CL-197HB1E-D-T CL-197HB1E-D-T
(ILLUMINATION)
(ILLUMINATION)
6 4 2
R925
S906
1.8k
R966 R932
180 1.5k
R942
LED934
470
CL-197HB1E-D-T
5 3 1
(ILLUMINATION)
R943
470 R926
ALBM +
S907
2.2k
ZAP
6 4 2
R967 R933
180 1.8k
LED914 LED919
LED910
CL-197HB1E-D-T CL-197HB1E-D-T
SOURCE
OFF
SEEK + MODE
5 3 1
R952 R958
470 470
ALBM -
R953 R959
6 4 2
470 470
R970 R934
LED912 LED921 180 2.2k
CL-197HB1E-D-T
LED916
BTM
SEEK –
CL-197HB1E-D-T
5 3 1
ZAP
AF/TA
1 6 4 2
5
R918 BTM
0
4
(BT3850U)
3
R971 R935
2
180 3.3k
RE901
R919
ROTARY
0
ENCODER 5 3 1
PUSH ENTER/
BLUETOOTH
R999
SELECT/
10
(VOLUME)
6 4 2
32 32
8 9 10
R907
150
IC902
R905
R906
100 S[4]
150 2.6
REMOTE CONTROL
49
RECEIVER S[3]
2.6
50
IC902
COM[4] 2.6
RS-470
51
5.1 1 2 COM[3] 2.6
VCC GND1 52
5 3 4 COM[2] 2.6
GND2
OUT 53
COM[1] 2.6
54
S[2] 2.6
55
5.1
56
C902 0.1 3.4
57
R904 C903
1.8
1M 0.1
58
C901 0.1
6
59
S[1]
2.6
60
2.6
61
CE R915 100 0.3
D902
62
MAZ8051GMLS0
CLK R916 100 3.2
63
C906 C904
DATA R917 100 3.1
0.1 0.47
5
64
C911 C909
100p 100p
C910
100p
LED901
NESW505CT-AST
(LCD BACK LIGHT)
R908
220
R909
220
4
R910
220
Q901
RT1N140C-TP-1
0.3
LED DRIVE
R911 5.1
1.2k
3
R998
0
2
R914
0
1
R974
1.5k
LED924, 925, 928, 929
(RING ILLUMINATION)
R975
1.2k
CAT
(BT3800U: AEP, UK/BT3807U)
R976
PTY
1.5k
R977
1.8k
0.3
5.1
Q907
RT1N140C-TP-1
LED DRIVE
BT
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
LCD901 LIQUID CRYSTAL DISPLAY
Note: Refer to the servicing notes "NOTE FOR REPLACEMENT OF THE USB CONNECTOR
(CN902)" (See page 5), if replacing the Ref. No. CN902.
11 12 13
IC B/D
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
S[21]
2.6
32
SEG4 SEG21
S[22]
2.6
31
SEG3 SEG22
2.6 S[23]
COM4 SEG23 30
2.6 S[24]
COM3 SEG24 29
2.6 S[25]
COM2 SEG25 28
2.6 S[26]
COM1 SEG26 27
IC901 2.6 S[27]
SEG2 SEG27 26
2.6 S[28]
VDD LIQUID CRYSTAL DISPLAY DRIVER SEG28 25
2.6 S[29]
IC901 24
VDD1 SEG29
LC75829PWH-US-H 2.6 S[30]
23
VDD2 SEG30
S[31]
2.6
22
VSS SEG31
S[32]
2.6
21
SEG52 SEG32
S[33]
2.6
20
INH SEG33
2.6 S[34]
LCD_CE SEG34 19
BACK-LIGHT 2.6 S[35]
LCD_CLK SEG35 18
2.6 S[36]
LCD_DATA SEG36 17
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1