Sony MEX-BT4700U / MEX-BT4750U Service Manual ▷ View online
MEX-BT4700U/BT4750U
MEX-BT4700U/BT4750U
29
29
4-9. SCHEMATIC DIAGRAM - MAIN Section (4/4) -
• See page 34 for Waveforms. • See page 34 for IC Block Diagrams. • See page 37 for IC Pin Function Description.
MAIN
8
BOARD
(3/4)
MAIN
BOARD
MAIN
BOARD
6
4
(2/4)
(2/4)
2
(1/4)
BOARD
MAIN
1
2
3
IC B/D
A
BOARD
SUB
0
0
0
0
0
0
0
0
3.3
0
0
0
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
0
0
0
0
3.3
0
0.2
3.3
3.3
3.3
3.3
3.3
0
0
0
0
1.6
1.7
1.5
3.2
3.1
0.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
0
0
0
0
0
0
3.2
0
0
0
0
0
0
0
1.5
1.7
3.3
1.8
0
0
0
3.3
3.3
3.3
3.3
3.3
0
0
0
0
0
0.8
0.9
3.2
3.2
3.2
0
1.6
3.2
3.2
2.5
3.2
0.7
1.6
2.5
3.1
3.2
0
3.3
3.3
0
0
3.3
3.3
5.1
5.1
0
0
43
29
470
R104
100k
R590
100k
R520
JL051
I2C_SCK
1000p
C110
0
R536
R58
10k
470
R534
100k
R552
48
1
C101
4.7k
R519
C60
0.01
0.01
C515
FB566
470
R103
33
100k
R539
0
R60
100k
R571
10k
R59
100k
R522
16V
220
C112
100k
R578
JL052
1000p
C514
0
R412
100
R529
44
10k
R528
100
R533
R541
100k
1
C102
ISA1235AC1TP-1EF
Q52
C54
0.1
4700p
C104
0
R535
JL055
C52
15p
21
C59
0.1
JL054
100
R570
10uH
L110
27p
C505
1
2
3
4
5
6
7
8
8P
CN501
RESET
CLK
NCO
RX
TX
3.3V
F_WRITE
GND
R54
10
0
R567
BAT54ALT1G
D400
C55
0.1
32.768kHz
X502
10k
R530
32
RT1N141C-TP-1
Q598
R50
0
31
R56
100k
FB52
0
46
0.01
C506
1
C507
100k
R551
38
100k
R521
100
R549
100k
R504
100
R547
10k
R514
18
JL050
100k
R558
4700p
C103
S101
RESET
53
R546
100k
100
R540
100
R557
7.92MHz
X501
100k
R565
23
C50
100p
R51
0
0.01
C510
FB105
0.01
C508
R55
10
100
R525
RDS_OUT
8.664MHz
X50
JL057
R542
100k
4.7k
R560
1000p
C512
12k
R101
20
100k
R502
R515
16V
C61
47
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
TDA7333013TR
IC50
VDDA
REF3
REF2
REF1
VSS
TM
VDDD
RESET
XTI
XTO
I2C_SCK
I2C_SIO
SA
CSN
INTN
MPX
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
IC501
MB90F883AHPF-G-103E1
BT_PLA
Y
BT_FR
BT_FF
BT_POWER_CTRL
BT_ST
A
TUS0
BT_ST
A
TUS1
BT_ST
A
TUS2
BT_ST
A
TUS3
XBT_RESET
BT_MFUNC
BT_OPRPOW
BT_ST
A
TUS_POW
X_OUT
X_IN
VCC
VSS
C
BT_TEST2
BT_TEST1
XNOSE_SW
XDOOR_SW
I2C_SIO
I2C_SCK
DOOR_IND
CYRIL_SEL
RE_IN0
RE_IN1
AREA_SEL2
AREA_SEL1
AREA_SEL0
B_OUT
_SEL
AVCC
AVRH
XRC_IN1
AVSS
SA_IN
VSM
TU_ATT
KEY_IN1
KEY_IN0
RC_IN0
XEXT_ATT_XEN
WAKE_UP
VSS
XKEY_ACK0
XKEY_ACK1
DAVN
LCD_CE
LCD_SO
LCD_SCK
XMD2
MD1
MD0
XRESET
UNISI
UNISO
UNSCK
RDS_ON
MC_RX
MC_TX
XTEST_IN
Z_MUTE
XILL_IN
AT
T
VCC
VSS
BU_CHECK
AMP_STB
XDIAG
EJECT_OK
SA_OUT
SA_CLK
F_AUX
BT_A
TT_XEN
VBUS_ON
XUSB_OVR
FLASH_EN0
FLASH_EN1
USB_ON
DD_ON
TEL_ATT
XACC_IN
XBUS_ON
CD_ON
CDM_ON
XSYS_RST
BT_MIC_POW
XBT_MIC_SEL
BT_MIC_DET
VCC
VSS
OSC_OUT
OSC_IN
BT_MUTE
SIRCS
BT_INT_HF
BT_CVC
ZAPPIN_BEEP
SYNC_OUT
BEEP
40
1000p
C509
42
100k
R537
C57
0.1
22
52
0
R568
0
R505
RT1N141C-TP-1
Q599
17
30
37
C51
100p
41
470
R579
100k
R51
1
FB50
R513
100k
R526
330
R110
R57
1k
FB53
27p
C504
100k
R553
12k
R102
19
LRB751V-40T1G
D505
VSM
JL053
1000p
C511
100k
R538
4.7k
R556
S502
I2C_SIO
JL056
D117
UDZSUSTE-176.8B
4.7k
R518
4.7k
R555
C58
0.1
100k
R550
0.01
C513
C53
15p
C56
0.1
FB51
RT1P141C-TP-1
Q597
100
R527
100p
C62
51
34
R503
100k
100
R548
100k
R572
100
R531
10k
R532
100
R569
100k
R585
49
56
10k
R516
R544
100k
R559
100k
47
45
BT_MUTE
BT_INT
ACC_IN
BT_CVC
CDM_ON
MC_RX
MC_TX
RE0
VSM
39
I2C_SIO
SIRCS
RE1
I2C_SCK
ILL_IN
SYN_OUT
CD_ON
TEL_ATT
BT_ON
I2C_SCK
I2C_SIO
DAVN
DAVN
VSM
RDS_ON
USB_ON
DD_ON
USB_OVR
VBUS_ON
EJECT_OK
BU_CHECK
Z_MUTE
LCD_DATA
LCD_CE
LCD_CLK
WAKE_UP
RC0
RC1
KEY0
KEY1
BT_TE1
BT_FR
BT_ST2
BT_TE2
BT_POW
BT_RST
BT_ST1
BT_PLA
Y
BT_FF
BT_ST3
BT_ST0
BT_OP
BT_MF
SYS_RST
LCD_+9V
100k
R576
100k
R577
SYS_RST
RDS_ON
RDS DECODER
IC50
SYSTEM CONTROLLER
IC501
(4/4)
MAIN BOARD
INVERTER
B+ SWITCH
(NC)
(CHASSIS)
RESET SWITCH
INVERTER
(BT4700U)
(BT4750U: E, MX, IND)
BT4700U/
BT4750U: EA
(BT4750U)
(BT4700U)
(BT4700U)
J
4
B
16
6
9
11
D
N
15
H
L
10
K
17
3
5
12
C
F
18
M
1
19
E
8
G
20
14
A
2
13
I
7
FREQUENCY
SELECT
9k
10k
(BT4750U)
100
R509
100k
R510
DOOR_SW
100
R512
MAZ8068GMLS0
D501
(NOSE DETECT)
S102
SA_CLK
SA_DA
2.2k
R554
100k
R575
100k
R574
100k
R573
100p
C521
100p
C522
SA_OUT
55
50
MAZ8068GMLS0
D1
10
0.1
C122
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
20
21
21P
CN102
DOOR_IND
DOOR_SW
+B (LCD-LED)
SIRCS
KEY0
LCD_DATA
RE1
RE0
LCD_CLK
LCD_CE
KEY1
GND (KEY)
AUX_L
AUX_GND
AUX_R
GND (LCD-LED)
GND (LCD-LED)
19
GND (USB)
GND (USB)
VBUS (USB)
VBUS (USB)
RT1P141C-TP-1
Q590
RT1N141C-TP-1
Q589
DOOR_SW
LED DRIVE
Q589, 590
LED_+9V
KEY1
LCD_CE
LCD_CLK
RE0
RE1
LCD_DATA
KEY0
SIRCS
MAZ8068GMLS0
D109
MAZ8068GMLS0
D108
MAZ8068GMLS0
D107
MAZ8068GMLS0
D106
MAZ8068GMLS0
D105
MAZ8120GMLS0
D104
MAZ8051GMLS0
D103
MAZ8068GMLS0
D101
(Page
26)
(Page
27)
(Page 28)
(Page 27)
(Page
31)
MEX-BT4700U/BT4750U
MEX-BT4700U/BT4750U
30
30
4-10. PRINTED WIRING BOARDS - SUB Section -
1
A
B
C
D
E
F
G
H
I
2
3
4
5
6
7
8
9
10
11
;
1-877-079- (11)
11
CN201
S201
LED201,S201
LED201
LED202
(DISC SLOT ILLUMINATION )
LED202
1
10
11
20
SERVO
BOARD
BOARD
(2/2)
1-877-079-
(11)
11
1
21
1
3
CN203
C201
C202
C203
D203
D204
D205
D206
R201
R202
R205
R206
K
A
K
A
A
MAIN BOARD
CN102
B
KEY BOARD CN901
LED201, 202
A
K
•
: Uses unleaded solder.
• See page 23 for Circuit Boards Location.
Ref. No. Location
• Semiconductor
Location
D203
H-5
D204
H-3
D205
F-10
D206
F-10
LED201 B-5
LED202 C-3
LED202 C-3
(Page 32)
(Page 25)
MEX-BT4700U/BT4750U
MEX-BT4700U/BT4750U
31
31
4-11. SCHEMATIC DIAGRAM - SUB Section -
BOARD
KEY
(4/4)
BOARD
CN102
CN901
B
MAIN
A
1
2
3
3P
CN203
D+ (USB)
D- (USB)
GND (USB)
D- (USB)
GND (USB)
S201
MAZ8068GMLS0
D206
MAZ8068GMLS0
D205
MAZ8068GMLS0
D204
MAZ8068GMLS0
D203
10
R201
10
R202
R206
R205
0.1
C202
0.1
C201
1
21
VBUS(USB)
VBUS(USB)
GND(USB)
GND(USB)
GND(LCD-LED)
GND(LCD-LED)
AUX_R
AUX_GND
AUX_L
GND(KEY)
KEY1
LCD_CE
LCD_CLK
RE0
RE1
LCD_DATA
KEY0
SIRCS
+B(LCD-LED)
DOOR_SW
DOOR_IND
VBUS(USB)
GND(USB)
GND(USB)
GND(LCD-LED)
GND(LCD-LED)
AUX_R
AUX_GND
AUX_L
GND(KEY)
KEY1
LCD_CE
LCD_CLK
RE0
RE1
LCD_DATA
KEY0
SIRCS
+B(LCD-LED)
DOOR_SW
DOOR_IND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
20P
CN201
AUX-R
AUX-GND
KEY1
KEY0
KEY0
KEYGND
LCD-DATA
LCD-CE
GND-USB
VBUS-USB
GND-LCDLED
GND-LCDLED
GND-LCDLED
D- (USB)
D+ (USB)
LCD-CLK
LCD-CLK
SIRCS
RE0
RE1
RE1
DOORSW
+B-LCDLED
AUX-L
0.1
C203
LED202
SIRCS
DOORSW
LCD-DATA
RE1
RE0
LCD-CLK
LCD-CE
AUX-L
AUX-GND
AUX-R
KEY1
LCD-CLK
SIRCS
RE0
RE1
RE1
DOORSW
AUX-L
LCD-CE
AUX-R
AUX-GND
KEY1
KEY0
KEY0
LCD-DATA
KEY0
SUB BOARD
SERVO
BOARD
(DISC SLOT ILLUMINATION)
(2/2)
1k
5.6k
SCM015BC7TT86P
LED201
SCM015BC7TT86P
C
1
A
B
2
3
4
D
5
E
(Page 33)
(Page 29)
MEX-BT4700U/BT4750U
MEX-BT4700U/BT4750U
32
32
4-12. PRINTED WIRING BOARDS - KEY Section -
1
36
72
37
B
E
E
D975
D976
D977
D978
IC982
LCD901
LED901
LED902
LED903
LED904
LED905
LED906
LED907
LED908
LED909
LED910
LED911
LED912
LED913
LED914
LED915
LED916
LED917
LED918
LED919
LED920
LED921
LED924
Q971
LED991
LED992
C905
S951
S952
S953
S954
S955
S956
S957
S958
S959
S960
S961
S962
S963
S964
S965
S966
S967
10
1
20
11
BE
5
8
1
4
D981
D913
D982
IC971
IC981
L921
FB904
R900
R901
R902
R903
R904
R904
R905
R906
R907
R908
R909
R910
R911
R912
R913
R914
R915 R916
R917
R918
R919
CN901
R920
CL001
CL002
CL003
R926
R927 R928
Q991
Q993
C903
C904
R944
R945
R946
R951
R952
R953
R954
R955
R956
R957
R958
R959
R960
R961
R962
R963
R964
R965
R966
R967
R971
R972
R973
R974
R975
R976
R977
R978
R981
R982
R983
R984
R985
R986
R987
R988
R991
R992
R993
R994
D901
D903
D904
D906
D907
D908
D910
D911
D912
C981
C982
C983
C984
C985
C986
C991
C992
C993
C995
S971
RE901
CN971
FB902
FB901
FB903
J901
W0G
W0L
W0R
LIQUID CRYSTAL DISPLAY
A
K
A
K
A
K
A
K
A
K
A
K
A
K
A
K
A
K
A
K
A
K
A
K
A
K
A
1
3
2
4
K
A
K
A
K
A
K
A
K
A
K
A
K
A
K
A
K
OFF
LED901, S951
LED902, S956
ZAP
LED903, S954
LED905, S953
SEEK +
.
S951 – 967
KEY BOARD
(COMPONENT SIDE)
LED901 – 921, 924
LED917 – 920
A
K
(LCD BACK LIGHT)
BLUETOOTH
BT
LED908, S957
LED904, 921,
S955
LED906, S958
LED909, S966
(BT4750U)
(BT4700U)
LED910, S965
LED911, S964
LED912, S963
LED913, S962
LED914, S961
LED915, S960
LED916, S959
N
SEEK –
LED924, S967
MODE
SOURCE
LED907, S952
– ALBUM
1
ALBUM +
2
REP
3
SHUF
4
MIC
5
PAUSE
6
SCRL
DSPL
DSPL
BTM
1-877-076-
21
(21)
PTY
AF/TA
PUSH ENTER/
SELECT/
(LCD BACK LIGHT)
1
20
21
40
41
60
61
80
PUSH ENTER/
SELECT/
(VOLUME)
ROTARY
ENCODER
RE901
B
SUB BOARD
CN201
(USB)
BRN
RED
ORG
1
4
1-877-076-
21
(21)
KEY BOARD
(CONDUCTOR SIDE)
FRONT PANEL
OPEN/CLOSE
DETECT
S971
1
7
6
3
2
4
5
BRN
RED
ORG
AUX
JACK
BOARD
1-877-077-
21
(21)
A
B
C
D
E
1
2
3
4
5
6
7
8
•
: Uses unleaded solder.
• See page 23 for Circuit Boards Location.
Note: Refer to the servicing notes “NOTE FOR REPLACEMENT
OF THE USB CONNECTOR (CN971)” (See page 4), if
replacing the Ref. No. CN971.
replacing the Ref. No. CN971.
Ref. No. Location
• Semiconductor
Location
D901
E-6
D903
E-6
D904
E-6
D906
D-6
D907
E-7
D908
E-6
D910
D-7
D911
E-6
D912
D-7
D913
E-3
D975
B-7
D976
A-7
D977
A-7
D978
A-7
D981
D-4
D982
E-4
IC971
D-7
IC981
D-5
IC982
A-3
LED901 A-1
LED902 B-2
LED903 A-2
LED904 B-1
LED905 A-2
LED906 B-2
LED907 B-2
LED908 B-2
LED909 C-4
LED910 C-4
LED911 C-4
LED912 C-5
LED913 C-5
LED914 C-6
LED915 C-6
LED916 C-6
LED917 A-3
LED918 B-2
LED919 B-3
LED920 B-3
LED921 B-1
LED924 C-2
LED991 B-7
LED992 B-3
LED902 B-2
LED903 A-2
LED904 B-1
LED905 A-2
LED906 B-2
LED907 B-2
LED908 B-2
LED909 C-4
LED910 C-4
LED911 C-4
LED912 C-5
LED913 C-5
LED914 C-6
LED915 C-6
LED916 C-6
LED917 A-3
LED918 B-2
LED919 B-3
LED920 B-3
LED921 B-1
LED924 C-2
LED991 B-7
LED992 B-3
Q971
A-7
Q991
D-3
Q993
E-2
(Page 30)
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