Sony MEX-BT4700U / MEX-BT4750U Service Manual ▷ View online
MEX-BT4700U/BT4750U
MEX-BT4700U/BT4750U
21
21
4-2. BLOCK DIAGRAM - AUDIO Section (2/2) -
R-CH
RDS DECODER
IC50
MPX
16
I2C_SDA
12
I2C_SCL
11
INTN
10
9
X50
8.664MHz
XTO
XTI
15
16
X1
4MHz
XTAL2
XTAL1
8
LOUT
A
ELECTRICAL VOLUME, INPUT SELECT
IC401
SYSTEM CONTROLLER
IC501 (2/3)
OUT_FLCH 34
OUT_RLCH 32
OUT_SLCH 30
R-CH
R-CH
FL+
FL–
4
1
9
FR+
FR–
2
12
RL+
CN701 (1/2)
POWER AMP
IC301 (1/2)
RL–
RR+
11
10
3
RR–
R-CH
R-CH
MUTING
Q480
MUTING
Q485
MUTING
Q483
• SIGNAL PATH
: TUNER
: CD PLAY
: AUDIO
: AUX IN
• R-ch is omitted due to same as L-ch.
IN-RL
11
IN-FL
12
I2C_SIO
2
I2C_SCK
4
OUT-RL- 7
OUT-RL+ 9
OUT-FL- 3
OUT-FL+ 5
R-CH
J901
FRONT
AUDIO OUT
L
REAR
AUDIO OUT
R
L
R
SUB
AUDIO OUT
L
R
DIAG
25
STB
22
BEEP
16
J901
AUX
9
ROUT
R-CH
SDA
19
SCL
18
RSSI
14
PLL
IC1
L6
FM MIX
FMIN1
4
FMIN2
3
AMPRFIN
1
AMSELIN2
29
AMSELIN1
28
AMSELOUT1
31
AMSELOUT2
32
MPXIN
12
MPXOUT
13
47
DAVN
37
VSM
22
I2C_SIO
23
I2C_SCK
98
ZAPPIN_BEEP
69
XDIAG
68
AMP_STB
100
BEEP
J1
(ANTENNA IN)
15
CD_LCH
6
BT_LCH
CD-L
ATT
BT-L
12
AUX_LCH
9
TU_LCH
4
ZAP_BEEP
13
I2C_SIO
38
I2C_SCK
37
ZAP_BEEP
16
(BT4700U)
(Page 20)
MEX-BT4700U/BT4750U
MEX-BT4700U/BT4750U
22
22
4-3. BLOCK DIAGRAM - PANEL, POWER SUPPLY Section -
LIQUID
CRYSTAL
DISPLAY
LCD901
LIQUID CRYSTAL DISPLAY DRIVER
IC981
SYSTEM CONTROLLER
IC501 (3/3)
BU B+
D600
D601
BATTERY
CHECK
Q600
S5 - S64
64
S101
RESET
XSYS_RST
86
BU_CHECK
67
XRESET
54
XNOSE_SW
20
KEY_IN0, KEY_IN1
S201, 951 - 967
(FRONT PANEL KEY)
XRC_IN1
34
RC_IN0
41
J701
REMOTE IN
(VOLUME)
X502
32.768kHz
13
14
X_OUT
X_IN
93
92
X501
7.92MHz
OSC_OUT
OSC_IN
28
BU +3.3V
AREA_SEL2
S502
SIRCS 95
D505
REMOTE
CONTROL
RECEIVER
IC982
LED DRIVE
Q991
LED991, 992
(LCD BACK LIGHT)
LED901 - 921, 924
(KEY ILLUMINATION)
26 RE_IN0
27 RE_IN1
27 RE_IN1
ROTARY
ENCODER
RE901 (2/2)
45 XKEY_ACK0
46 XKEY_ACK1
XSYS_RST
BU_CHECK
SYS_RST
BU +3.3V
RESET SIGNAL
GENERATOR
IC503
10k
9k
FREQUENCY
SELECT
3 - 64, 69, 74
COM1 - COM4
4
65 - 68
DI 78
CL 77
CE 76
LCD_SO
49
LCD_SCK
50
LCD_CE
48
DIMMER
79
LED201
LED202
(DISC SLOT ILLUMINATION)
RING
80
LED DRIVE
Q993
40, 39
BT_ON
DOOR_SW
B
KEY0
ACC
13
7
ATT
AMP-R
AMT-R
AMT-R
5
6
6
+B
19
BU B+
REGULATOR
IC301 (2/2)
CN701 (2/2)
AUDIO+B(8.5V)
30
VP2 6
ANT-REM
AUDIO +8.5V
27
AMP-REM 29
MECHA-6V
33
CD +6V
PANEL+B
34
LCD +9V
VBUS
BU+B
37
BU +3.3V
BU +5V
VP1 20
SERVO-3.3V
31
CD +3.3V
+3.3V
REGULATOR
IC502
ACCESSORY
CHECK
Q703
XACC_IN 82
TEL_ATT 81
RDS +3.3V
B+ SWITCH
Q52
BT +3.3V
+3.3V
REGULATOR
IC801
VP 35
MIC +3.3V
B+ SWITCH
Q826, 827
REGULATOR
CONTROL
Q802, 803
LEVEL SHIFT
Q701
BT_POWER_CTRL
DD_ON
4
80
SYNC_OUT 99
RDS_ON 58
BT_MIC_POW 87
DC/DC CONVERTER
IC851,
Q851 - 854, 861
USB POWER
ON/OFF SWITCH
IC852
DC/DC
CONVERTER
CONTROL
IC853
XUSB_OVR 76
USB_ON 79
(BT4750U: E, Mexican, Indian)
(BT4700U)
S102
(NOSE DETECT)
XDOOR_SW
21
S971
(FRONT PANEL OPEN/CLOSE DETECT)
DOOR_IND
24
BATTERY
CHECK
Q604, 605
LED DRIVE
Q589, 590
ILL
14
DIMMER
DETECT
DETECT
Q702
XILL_IN 63
;
(Page 20)
MEX-BT4700U/BT4750U
MEX-BT4700U/BT4750U
23
23
• Circuit Boards Location
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specifi ed.
• f :
internal
component.
•
C : panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
•
A : B+ Line.
• Power voltages is dc 14.4V and fed with regulated dc
power supply from ACC and BATT cords.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER
( ) : CD PLAY
• Voltages are taken with a VOM (Input impedance 10
( ) : CD PLAY
• Voltages are taken with a VOM (Input impedance 10
M
Ω).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F :
AUDIO
f :
TUNER
J
: CD PLAY
p : Bluetooth
l : USB
N :
MIC
E :
AUX
IN
• Abbreviation
EA
EA
: Saudi Arabia model
IND
: Indian model
MX
: Mexican model
For Printed Wiring Boards.
Note:
•
•
X : Parts extracted from the component side.
•
Y : Parts extracted from the conductor side.
•
W : Indicates side identifi ed with part number.
• f :
Internal
component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts on the parts face side seen from
the pattern face are indicated.
Parts on the pattern face side seen from
the parts face are indicated.
the pattern face are indicated.
Parts on the pattern face side seen from
the parts face are indicated.
Caution:
Parts face side:
(Conductor Side)
Pattern face side:
(Component Side)
Parts face side:
(Conductor Side)
Pattern face side:
(Component Side)
Parts on the parts face side seen from
the pattern face are indicated.
Parts on the pattern face side seen from
the parts face are indicated.
the pattern face are indicated.
Parts on the pattern face side seen from
the parts face are indicated.
• Abbreviation
EA :
EA :
Saudi
Arabia
model
IND :
Indian
model
MX :
Mexican
model
• Indication of transistor.
C
B
These are omitted.
E
Q
Note: The components identifi ed by mark
0 or dotted
line with mark
0 are critical for safety.
Replace only with part number specifi ed.
MAIN board
SENSOR board
SERVO board
KEY board
JACK board
– main unit –
– front panel –
BT board
ANTENNA board
SUB board
Note: When the BT board or MAIN board (including BT
board) is replaced, it is necessary to confi rm opera-
tion. Refer to “BLUETOOTH FUNCTION CHECKING
METHOD USING A CELLULAR PHONE” of the ser-
vicing notes (See page 5).
tion. Refer to “BLUETOOTH FUNCTION CHECKING
METHOD USING A CELLULAR PHONE” of the ser-
vicing notes (See page 5).
Note: When the BT board or MAIN board (including BT
board) is replaced, it is necessary to confi rm opera-
tion. Refer to “BLUETOOTH FUNCTION CHECKING
METHOD USING A CELLULAR PHONE” of the ser-
vicing notes (See page 5).
tion. Refer to “BLUETOOTH FUNCTION CHECKING
METHOD USING A CELLULAR PHONE” of the ser-
vicing notes (See page 5).
MEX-BT4700U/BT4750U
MEX-BT4700U/BT4750U
24
24
4-4. PRINTED WIRING BOARDS - MAIN Section (1/2) -
R400
R401
R403
R404
R406
R407
R408 R409
R600
FB50
FB51
R602
FB52
FB53
Q470
Q471
R412
C32
R413
R415
R800
Q862
R803
FB4
Q480
Q482
E
E
E
E
E
Q483
R618
Q484
Q485
R815
R816
R817
R818
C50
Q490
C51
R819
C52
C53
Q493
C54
C55
C56
C57
R820
IC50
C58
R821
C59
R822
C400
C60
C405
C62
C406
CN810
R830
R831
R834
R837
R838
R456
R457
C809
R847
R460
R461
R462
R463
R464
R470
C828
C829
C830
Q52
C834
C838
R490
R491
R492
R493
C840
R494
C459
R880
C845
R881
R882
C847
R883
R884
D400
C460
R885
R886
R887
R889
D600
R890
D601
R891
R892
R893
R894
Q701
Q702
Q703
R898
R899
IC401
C880
C881
C882
C883
FB105
IC812
IC813
IC814
R101
R102
R103
R104
C899
R106
R304
R305
R306
R309
R500
R502
R503
R504
R505
R506
D470
R702
D472
R704
R705
R511
R706
R513
R514
R709
R515
R516
R518
R519
R710
R711
R713
R714
R520
R521
R522
C101
R525
C102
R526
C103
R527
C104
R528
R529
R530
R531
R532
R533
C304
R534
C305
R535
C306
R536
C307
R537
C308
R538
C309
R539
C500
C501
C503
C310
R540
C311
R541
C506
R542
C507
C508
R544
C509
C316
R546
C318
C702
C703
R17
C704
C510
R18
C705
C511
C522
C521
R19
C512
C707
C513
C708
C514
R550
C709
C515
R551
R552
C323
R553
C519
C325
R555
R556
R557
R557
C710
R558
R560
R565
R567
R6
R571
R572
R578
R50
R51
R54
R55
R56
R58
R59
R590
D117
D118
D119
D502
Q600
D505
L401
D702
D703
D704
D705
IC501
IC502
IC503
Q820
Q821
Q822
Q823
Q824
Q825
Q826
Q827
C14
C15
BE
B
E
R604
R605
Q604
Q605
R623
R707
R708
D706
D708
R465
R466
R467
D494
R554
R576
R577
C453
C461
R573
R574
R575
R486
B
E
B
E
R509
R510
R512
Q589
Q590
C122
D101
D103 D104
D105
D106
D108
D109
D110
D109
D110
D501
BE
B E
B E B E
8
9
16
1
1
1
2
B E
B
E
B
E
E
B E
21
20
40
1
B
E
E
B
E
1
100
30
31
81
80
50
51
BE
BE
BE
BE
B E
B E
BE
6
1
3
3
4
B E
1
2
3
4
1
3
3
4
5
1
4
4
5
8
1
4
4
5
8
K
A
K
A A
K
A
K
K
1-878-708-
12
MAIN BOARD
(COMPONENT SIDE)
MIC801
(BT4750U)
(BT4750U)
(BT4700U)
(BT4700U/BT4750U: EA)
(BT4700U)
(BT4750U)
(BT4700U)
(BT4750U)
(BT4700U)
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
•
: Uses unleaded solder.
• See page 23 for Circuit Boards Location.
Ref. No. Location
• Semiconductor
Location
D101
H-6
D103
G-7
D104
G-7
D105
G-7
D106
G-7
D108
G-7
D109
G-7
D110
G-7
D117
G-8
D118
E-7
D119
E-7
D400
F-4
D470
C-4
D472
E-5
D494
E-5
D501
H-5
D502
E-5
D505
G-5
D600
D-3
D601
C-2
D702
C-4
D703
C-4
D704
C-3
D705
C-3
D706
C-3
D708
D-3
IC50
F-8
IC401
D-7
IC501
G-6
IC502
D-5
IC503
E-5
IC812
H-4
IC813
G-5
IC814
F-4
Q52
G-8
Q470
D-4
Q471
D-4
Q480
B-7
Q482
B-6
Q483
B-7
Q484
B-7
Q485
B-7
Q490
E-5
Q493
E-5
Q589
G-7
Q590
G-7
Q600
D-2
Q604
D-2
Q605
D-2
Q701
D-4
Q702
D-4
Q703
D-3
Q820
F-4
Q821
F-4
Q822
F-4
Q823
H-4
Q824
G-4
Q825
G-4
Q826
F-4
Q827
F-4
Q862
H-5
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