Sony MEX-BT4700U / MEX-BT4750U Service Manual ▷ View online
MEX-BT4700U/BT4750U
MEX-BT4700U/BT4750U
25
25
4-5. PRINTED WIRING BOARDS - MAIN Section (2/2) -
C20
C21
C22
C23
C24
C25
C26
C27
FB418
FB419
C29
Q851
Q852
Q853
Q854
FB420
R416
R801
FB1
Q861
FB2
FB3
R805
R806
R807
R808
R808
S102
R809
R810
R811
R812
R810
R811
R812
R813
R823
R824
R825
R826
C402
R829
JL001
JL003
JL004
C408
JL005
JL007
JL008
JL009
R832
R833
R835
R836
JL010
JL011
C415
JL012
JL013
JL014
C801
JL015
JL016
C803
JL017
JL018
C805
JL019
C807
JL020
JL021
R849
JL022
JL023
JL024
JL025
C812
C813
JL027
JL028
R851
R852
R855
C860
R856
R858
R472
R473
C822
C823
R860
C1
R861
C826
R862
R863
R864
C5
R865
C6
R866
C7
R867
C8
R868
R480
C9
R869
R482
R483
R484
JL045
R485
JL046
JL047
R870
R871
R872
R873
R874
JL050
JL051
JL052
JL053
JL054
JL055
JL056
JL057
C850
C851
C853
C854
C855
C856
C857
C858
C858
C470
C859
C471
C472
C473
C474
D801
C861
D802
C864
C865
C869
C486
C487
C870
C871
C871
D820
D824
D821
IC801
D823
R301
R302
R303
D851
D852
D853
D854
R900
R712
IC851
IC852
IC853
C301
C302
C110
IC1
Q597
Q598
Q599
C504
C505
R929
C312
C313
R10
C314
R11
R12
R13
R547
R14
R548
R15
R549
R16
C320
C324
FB566
C327
R559
C333
C334
R568
R569
R1
R2
R3
R4
R5
R570
C924
R579
VR1
C930
R585
R57
R60
D306
FU851
Q802
Q803
W1
W2
FB14
FB15
C12
C13
C16
C17
C18
C19
J701
L701
L851
L852
C804
C806
C852
C863
C476
R701
CN701
C303
C701
C319
D301
D302
D303
D304
D305
D307 D308
D309
D310
PL02
PL01
D311
D312
D701
J901
J1
L2
L6
IC301
C413
C414
C457
C458
C463
C464
C480
C482
C483
C484
C485
L7
L8
C315
C317
C321
C322
C326
1
13
26
14
BT800
S101
CN811
L110
R110
C112
X501
X502
C401
C403
C407
C502
CN350
C28
C61
L1
CN501
C100
S502
X50
X1
PAT001
L2001
CN2001
R487
R814
C454
C462
R703
C706
C329
1
2
20
21
CN102
D855
D107
G
S
D
D
D
D
D
D
G
S
D
D
D
D
G
S
D
D
1
16
17
32
1
4
5
8
1
4
5
8
1
4
5
8
1
PL03
3
4
5
5
18
19
17
16
8
9
1
1
37
2
36
1
3
B1
A1
A14
B14
8
1
9 k
10 k
(FREQUENCY SELECT)
(ANTENNA IN)
FU701
K
K
K
A
A
A
1-878-708-
12
MAIN BOARD
(CONDUCTOR SIDE)
(BT4750U)
(BT4750U: E, MX, IND)
(BT4700U)
(BT4700U)
(BT4700U)
(BT4700U)
(BT4750U)
(BT4700U)
(BT4750U)
(BT4700U)
L
R
FRONT AUDIO
OUT
L
R
L
R
SUB AUDIO
OUT
REAR AUDIO
OUT
E
E
E
(NC)
RESET
1
3
EXTERNAL
MICROPHONE
J801
E
E
BT BOARD
1-879-110-
1-879-110-
ANTENNA BOARD
(SIDE A)
ANTENNA BOARD
(SIDE B)
(PATTERN ANTENNA)
E
E
SERVO
BOARD (1/2)
SENSOR
BOARD
CD MECHANISM
DECK
MG-101Z-188//Q
1
9
WHT/BLK
WHT
GRN/BLK
GRN
VIO/BLK
VIO
GRY/BLK
GRY
WHT
GRN/BLK
GRN
VIO/BLK
VIO
GRY/BLK
GRY
BLU
RED
YEL
BLK
YEL
BLK
FRONT LCH (–)
FRONT LCH (+)
REAR LCH (–)
REAR LCH (+)
REAR RCH (–)
REAR RCH (+)
FRONT RCH (–)
FRONT RCH (+)
FRONT LCH (+)
REAR LCH (–)
REAR LCH (+)
REAR RCH (–)
REAR RCH (+)
FRONT RCH (–)
FRONT RCH (+)
ANT REM MAX 0.1A
ACC
BATT
GND
BATT
GND
2
10
3
11
4
12
5
13
6
14
7
15
8
16
1
1
9
WHT/BLK
GRN/BLK
VIO/BLK
GRY/BLK
WHT
GRN
VIO
GRY
BLU
RED
BLK
2
2
10
3
3
11
4
4
12
5
5
13
6
6
14
7
7
15
8
8
1
2
3
4
5
6
7
8
16
RL+
RL–
GRN/BLK
WHT/BLK
GRY/BLK
VIO/BLK
GRN
WHT
GRY
VIO
FL+
FL–
FR+
FR–
RR+
RR–
ACC GND
BLK
YEL
RED
BLU
ANT
REM
NC
NC
BATT
NC
NC
TO
CN701
(BT4700U)
(BT4750U)
YEL
ATT
AMP REM
MAX 0.3 A
AMP REM
MAX 0.3 A
LIGHT BLU
BLU / WHT
ATT
AMP REM
AMP REM
MAX 0.3 A
LIGHT BLU
BLU / WHT
REMOTE
IN
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
10
11
11
(11)
11
(11)
A
SUB BOARD
NOSE
DETECT
•
: Uses unleaded solder.
• See page 23 for Circuit Boards Location.
Ref. No. Location
• Semiconductor
Location
D107
H-4
D301
C-6
D302
C-6
D303
C-6
D304
C-6
D305
C-6
D306
C-6
D307
C-5
D308
C-5
D309
D-5
D310
D-5
D311
D-5
D312
D-5
D701
C-8
D801
G-8
D802
G-8
D820
G-6
D821
G-6
D823
G-6
D824
G-6
D851
F-9
D852
F-9
D853
F-8
D854
E-8
D855
C-9
IC1
E-2
IC301
B-5
IC801
G-8
IC851
E-8
IC852
H-6
IC853
F-7
Q597
G-2
Q598
G-2
Q599
G-2
Q802
G-8
Q803
G-7
Q851
E-8
Q852
E-8
Q853
F-8
Q854
F-8
Q861
F-8
(Page 30)
MEX-BT4700U/BT4750U
MEX-BT4700U/BT4750U
26
26
4-6. SCHEMATIC DIAGRAM - MAIN Section (1/4) -
• See page 34 for IC Block Diagrams.
(3/4)
MAIN
BOARD
1
(4/4)
MAIN
BOARD
2
(2/4)
3
MAIN
BOARD
IC B/D
IC B/D
IC B/D
0
2.7
0.6
0
0
6.1
0.6
0
0
3.3
14.2
14.2
14.2
7.2
14.2
14.2
3.3
2.6
0.9
5.1
5.1
3.3
3.3
5.1
5.1
5.1
3.3
1.6
0
14.2
14.2
13
0.5
4
1.2
0.7
14.2
5.1
5.1
13
5.1
5.1
0
4.8
0
0
5.1
5.1
0
5.1
5.1
3.3
0
6.1
0
JL022
2SC3052EF-T1-LEF
Q703
2SC3052EF-T1-LEF
Q605
JL012
10V
100
C403
MAZ8180GMLS0
D703
1k
R600
JL013
0.01
C408
JL008
1000p
C705
JL023
JL025
100
R403
1k
R602
JL005
0
R409
16V
10
C401
1k
R406
MAZ8180GMLS0
D704
JL014
10k
R705
10V
100
C407
100
R400
MAZ8075GMLS0
D600
0.01
C400
JL010
0.01
C402
JL019
JL028
10k
R706
0
R618
JL027
4.7k
R711
1k
R407
JL024
RT1N141C-TP-1
Q600
RT1N141C-TP-1
Q604
MAZ8180GMLS0
D601
100
R401
MAZ8180GMLS0
D705
JL016
3300p
C709
JL020
0.47
C707
JL007
JL015
MAZ8180GMLS0
D702
JL017
2SC3052EF-T1-LEF
Q701
JL001
JL018
100k
R404
JL021
1000p
C704
47k
R709
JL004
47k
R710
47k
R704
JL003
0.01
C924
0
R408
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
28P
CN350
NCO
NCO
SYS_RST
BU_3.3V
BU_GND
NCO(FLASH_W)
VBUS_ON
Z_MUTE
VBUS_CHECK
D_GND
TXD(MC-BUS)
RXD(MC-BUS)
MECHA_8.5V
USB_GND
DR_6V
DR_GND
CD_ON
CDM_ON
AU_ATT
AU_LCH
AU_GND
AU_RCH
A_GND
A_3.3V
EJECT_OK
OPEN_REQ
BU_CHECK
WAKE_UP
JL011
J701
0.47
C708
3300p
C710
0
R415
0
R416
0
R413
0
R714
0
R713
0
R712
39k
R861
2SB1690KT146
Q854
0.1
C865
6
5
4
3
2
1
D
D
G
S
D
D
TPC6108(T5RSONYF
,M
Q861
8
7
6
5
4
3
2
1
TC7WH123FU(TE12R)
IC853
A
B
CLR
GND
Q
Cx
Rx/Cx
VCC
MAZ8056GMLS0
D853
0.1
C851
4.7k
R867
10k
R873
0.22
C850
MA2J1110GLS0
D854
8
7
6
5
4
3
2
1
TPS40200DRG4
IC851
RC
SS
COMP
FB
GND
DR
V
ISNS
VCC
470p
C869
1.5k
R855
470p
C856
RT1N141C-TP-1
Q852
100k
R858
10k
R868
MA24D5000BS0
D852
6
5
4
3
2
1
D
D
G
S
D
D
RSQ035P03TR
Q853
330k
R860
1k
R866
10k
R865
1500p
C858
0.1
C870
0.1
C861
1
C857
1k
R871
6
5
4
3
2
1
D
D
G
S
D
D
TPC6108(T5RSONYF
,M
Q851
100k
R864
0
R872
0
R874
0.1
C854
0.1
C871
47uH
L851
36V
2A
FU851
10k
R869
0.1
C864
68k
R856
16V
220
C863
100k
R862
470p
C855
1
C860
15p
C859
68uH
L852
8
7
6
5
4
3
2
1
TPS2051BDRG4
IC852
GND
IN
IN
/EN
/OC
OUT
OUT
OUT
MAZ8120GMLS0
D851
47k
R851
47k
R852
1
C853
25V
470
C852
1k
R870
22k
R863
560p
C406
560p
C405
FB418
FB419
FB420
L401
2.2uH
17
18
20
22
19
21
23
1
7
6
5
2
4
8
9
10
11
16
14
15
13
28
27
24
25
12
MC_TX
CD_ON
CDM_ON
EJECT_OK
WAKE_UP
ACC_IN
VBUS_ON
Z_MUTE
MC_RX
USB_ON
USB_OVR
SYN_OUT
DD_ON
RC0
RC1
TEL_A
TT
BU_CHECK
(1/4)
MAIN BOARD
IC853
CONTROL
USB POWER
IC852
IC851
DC/DC CONVERTER
LEVEL SHIFT
ACCESSORY
CHECK
ON/OFF SWITCH
DC/DC CONVERTER
DC/DC CONVERTER
Q854, 861
DC/DC CONVERTER
DC/DC CONVERTER
Q851, 852
REMOTE
IN
SERVO
BOARD
BOARD
SENSOR
(1/2)
MG-101Z-188//Q
DECK
CD MECHANISM
J
4
B
16
6
9
11
D
15
H
10
K
3
5
12
C
F
1
E
8
G
14
A
2
13
I
7
BATTERY CHECK
1SS355WTE-17
D708
MAZ8180GMLS0
D706
2SC3052EF-T1-LEF
Q702
22k
R708
100k
R707
ILL_IN
DIMMER DETECT
50V
4.7
C706
220k
R604
3
220k
R605
BATTERY CHECK
Q604, 605
0
R623
(Page 28)
(Page 27)
(Page 29)
MEX-BT4700U/BT4750U
MEX-BT4700U/BT4750U
27
27
4-7. SCHEMATIC DIAGRAM - MAIN Section (2/4) -
• See page 34 for IC Block Diagrams.
4
BOARD
MAIN
(4/4)
3
BOARD
MAIN
(1/4)
MAIN
(3/4)
BOARD
5
IC B/D
IC B/D
MAIN
IC B/D
BOARD
(4/4)
7
MAIN
BOARD
(3/4)
8
0
0
0
0
0
3.3
0
4.2
4.2
4.2
4.2
4.2
4.2
8.4
1.2
1.5
0
0.5
1.3
0
3.3
5
0
0
0
0
3.3
3.3
0
4.2
0
4.2
4.2
4.2
4.2
4.2
8.4
4.2
4.2
0
0
0
0
3.3
0
3.3
3.3
4.2
2.3
3.5
0
3.1
0
0.5
0
3.1
0
3.7
3.8
1.3
3.7
6.7
5.7
8
0
8
5.7
8
8
5.4
0.8
3
4.6
3.7
3
100
R815
100
R816
100
R817
100
R818
100
R819
100
R820
100
R821
100
R822
100
R823
100
R824
100k
R809
100k
R810
100k
R811
100k
R812
100k
R813
100k
R814
100
R805
100
R803
100
R806
100
R807
100
R808
LBAT54CLT1G
D802
RT1N141C-TP-1
Q802
LBAT54ALT1G
D801
10k
R801
0.1
C801
0.01
C803
0.01
C805
16V
47
C804
10V
100
C806
0.01
C807
1
2
3
3P
CN811
EXT_MIC_IN
A-GND
MIC_DETECT
4.7k
R825
1000p
C823
1k
R829
C826
4.7
2.2k
R832
0
R830
1000p
C828
2.2k
R831
4.7
C830
4.7k
R833
LRB751V-40T1G
D823
D820
MAZ8068GMLS0
8
7
6
5
4
3
2
1
NJM4580V(TE2)
IC813
8
7
6
5
4
3
2
1
NJM4580V(TE2)
IC814
RT1N141C-TP-1
Q823
0.047
C880
Q826
RT1N141C-TP-1
0
C809
1
2
2P
CN810
MIC_IN
A-GND
RT1P141C-TP-1
Q803
RT1P141C-TP-1
Q820
RT1P141C-TP-1
Q821
1k
R834
C822
1000p
0
R826
100k
R847
0
R849
1
C838
3.9k
R886
3.9k
R887
RT1N141C-TP-1
Q822
1
C840
100k
R884
0.1
C845
1
C847
22k
R880
22k
R881
0
R883
0
R882
RT1N141C-TP-1
Q824
RT1P141C-TP-1
Q825
0
R893
220k
R890
220k
R889
22k
R891
0.01
C882
0.01
C881
0.1
C883
1k
R892
RT1P141C-TP-1
Q827
0
R898
1
2
3
4
5
6
TS5A3159DCKR
IC812
NO
GND
NC
COM
V+
IN
C834
0.1
MAZ8068GMLS0
D821
0
R800
C899
1000p
BT800
MIC_IN-
MIC_IN+
BT_INT-HF
BT_CVC
BT_PLAY
BT_STATUS0
BT_STATUS1
BT_STATUS2
BT_RESET
GND
VDD_3.3V
VDD_8.5V
A-GND
BT_AUDIO_L
A-GND
BT_AUDIO_R
BT_STATUS3
BT_MUTE
BT_FR
BT_FF
GND
BT_TEST1
BT_TEST2
BT_POW_ON
BT_OPRPOW
BT_MFUNC
C812
4.7
1k
R899
1k
R900
4.7
C829
5
4
3
2
1
TK11133CSCL-G
IC801
CONT
GND
NP
VOUT
VIN
C813
1000p
S
SSM3J05FU
Q862
R836
R835
0
R838
0
R837
MAZ8068GMLS0
D824
33
29
30
31
32
34
35
24
25
27
28
36
100k
R885
0.01
C22
1
C21
0
R19
VR1
33k
R10
GND_1
0.1
C24
68k
R6
L2
2.2uH
0
R17
0.1
C26
1
C14
VSM
1
C15
TU_RCH
0
R15
4.7k
R11
16V
47
C28
6p
C7
0.01
C20
32
31
30
29
28
27
1
2
3
4
5
6
26
25
24
7
8
9
23
22
21
20
10
11
12
19
18
17
13
14
15
16
TEF6607T/V4/S470,518
IC1
AMRFIN
AMRFDEC
FMIN2
FMIN1
GNDRF
VCC2
AMRFAGC
LOUT
ROUT
GNDAUD
AMIFAGC2
MPXIN
MPXOUT
RSSI
XTAL2
XTAL1
GNDD
SCL
SDA
VREF
VREGSUP
VCC1
GND
VCODEC
PLL
PLLREF
TEST
AMSELIN1
AMSELIN2
AMIFAGC1
AMSELOUT1
AMSELOUT2
0
R18
FB2
0
R5
560uH
L8
1000p
C1
0.47
C16
8.5V
I2C_SCK
0
R4
560uH
L7
0.1
C27
100
R13
470k
R2
2.2
C13
22
R12
0.1
C25
L6
FM MIX
1
2
3
4
6
0.01
C23
1000p
C5
FB4
0.01
C8
3.3uH
L1
FB1
4MHz
X1
0
R16
0.01
C19
TU_LCH
0
R3
12p
C18
0.22
C12
I2C_SIO
0.1
C9
470k
R1
∗
C6
C29
330p
C32
10p
FB3
RDS_OUT
100
R14
0.1
C17
BT_FF
BT_FR
BT_MUTE
BT_ST3
BT_ST2
BT_ST1
BT_ST0
BT_PLAY
BT_CVC
BT_INT
BT_TE1
BT_TE2
BT_ON
BT_OP
BT_MF
BT_RST
BT_POW
BT_L
BT_R
MAIN BOARD (2/4)
MIC AMP
IC814
+3.3V REGULATOR
IC801
MIC AMP,
IC813
MIC INPUT SELECT
IC812
CENTER VOLTAGE
REGULATOR
G
V
V
G
MIC AMP
Q826, 827
B+ SWITCH
MUTING
Q802, 803
REGULATOR CONTROL
BOARD
BT
ANTENNA BOARD
CN2001
(PATTERN ANTENNA)
PAT001
MIC AMP
INVERTER
Q820-822
B+ SWITCH
10p (BT4700U)
∗C6
(BT4750U)
PLL
IC1
(CHASSIS)
9p (BT4750U)
(BT4700U)
(BT4700U)
(BT4750U)
(BT4750U)
(BT4750U)
(BT4700U)
(BT4700U)
(ANTENNA IN)
J1
(CHASSIS)
J801
EXTERNAL
MICROPHONE
MIC801
J
4
B
16
6
9
11
D
15
H
10
17
3
5
12
C
F
18
1
E
8
G
14
A
2
13
I
7
13
12
11
10
9
8
7
6
5
4
3
2
1
14
15
16
17
18
19
20
21
22
23
24
25
26
0
L2001
(Page 29)
(Page 28)
(Page
26)
(Page
29)
(Page
28)
MEX-BT4700U/BT4750U
MEX-BT4700U/BT4750U
28
28
4-8. SCHEMATIC DIAGRAM - MAIN Section (3/4) -
• See page 34 for IC Block Diagrams.
(1/4)
1
(2/4)
BOARD
7
MAIN
(4/4)
BOARD
6
MAIN
MAIN
BOARD
5
BOARD
MAIN
(2/4)
IC B/D
IC B/D
IC B/D
3.2
7
3.2
7
7
7
14.4
8.4
8.4
8.4
8.4
8.4
8.4
7
7
7
14.4
3.3
7
3.3
13.5
8.4
13.5
0 (3.3)
0 (6)
10.4
14.4
14.4
5
3.3
3.3
5
3.3
4.8
1.3
0
0
0
0
0
0
0
0
0
0
0
0
8.5
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
3.3
3.3
0
3.3
0
3.3
13.8
0
13.8
13.8
0
0
6
0.22
C323
220
R493
LTC614TKFP8T146
Q484
1A4-A2
D305
5
4
3
2
1
TK11133CSCL-G
IC502
CONT
GND
NP
VOUT
VIN
0.22
C702
100p
C474
0
R461
RT1N141C-TP-1
Q471
50V
10
C483
0.22
C312
0.01
C320
50V
1
C463
1SS355WTE-17
D470
LTC614TKFP8T146
Q482
2.2k
R106
100p
C473
10k
R484
0
R301
14
10k
R480
16
1SS355WTE-17
D502
40
13
16V
47
C476
1k
R702
1
C311
10V
1000
C326
0.22
C301
52
38
4.7k
R309
50V
1
C458
220
R491
0.22
C703
50V
10
C484
TU_LCH
8
42
1k
R472
0.01
C316
16V
47
C315
50V
1
C464
0
R929
220
R494
22
R470
MC2838-T112-1
D472
0.22
C324
47p
C459
0
R302
LTC614TKFP8T146
Q485
50V
10
C480
RT1P141C-TP-1
Q490
GND_1
220
R490
3.3k
R464
0.01
C930
C519
1000p
100k
R500
TDA8588AJ/N2/R1
IC301
1
TA
B
2
I2C_SIO
3
OUT
-FL-
4
I2C_SCK
5
OUT
-FL+
6
VP2
7
OUT
-RL-
8
P-GND1
9
OUT
-RL+
10
SVR
11
IN-RL
12
IN-FL
13
S-GND
14
IN-FR
15
IN-RR
16
BEEP
17
OUT
-RR+
18
P-GND3
19
OUT
-RR-
20
VP1
21
OUT
-FR+
22
STB
23
OUT
-FR-
24
P-GND4
25
DIAG
26
RST
27
ANT
-REM
28
CRES
29
AMP-REM
30
AUDIO+B(8.5V)
31
SER
VO-3.3V
32
GND
33
MECHA-6V
34
P
ANEL+B
35
VP
36
CBU
37
BU+B
4.7k
R701
1
C307
16V
10
C317
1A4-A2
D309
2
220
R492
47k
R460
44
100p
C472
FB15
10k
R485
0.01
C327
36
250uH
L701
53
50V
1
C457
4
40
39
38
37
36
35
34
7
6
5
4
3
2
1
33
32
30
31
8
27
28
29
9
10
11
12
13
14
24
17
25
26
23
22
21
20
19
18
15
16
BD3447AFV-E2
IC401
BUS_RCH
BUS_LCH
TU_RCH
TU_LCH
CD_RCH
CD_LCH
AUX_RCH
AUX_GND
AUX_LCH
BT_RCH
NCO
BT_LCH
ZAP_BEEP
NCO
NCO
ZAP_BEEP
EBIAS
DS2_L
DS1_L
DS3_L
DS3_R
DS1_R
DS2_R
EBIAS
NCO
NCO
SA_CLK
SA_DA
SA_OUT
OUT_SLCH
OUT_SRCH
OUT_RLCH
OUT_RRCH
OUT_FLCH
OUT_FRCH
VCC(8.5V)
I2C_SCK
I2C_SIO
GND
FIL
10k
R483
50V
2.2
C100
43
RT1P141C-TP-1
Q470
15
49
16V
C322
47
1
C309
6.3V
330
C502
RT1P141C-TP-1
Q493
0.22
C313
1
C314
100p
C471
1A4-A2
D31
1
1SR154-400TE-25
D306
1
TU_RCH
1
C308
10k
R482
48
50V
10
C413
0.01
C325
46
2200p
C487
8.5V
16V
10
C321
35
1A4-A2
D303
47p
C333
CN701
19P
FL+
RL+
RR+
FR+
AMP-R
ANT-R
ACC
GND
FL-
RL-
RR-
FR-
+B
TEL-ATT
ILL
TEST
+B
+B
+B
2.2
C334
1
C310
47k
R305
1A4-A2
D310
MAZ8068GMLS0
D119
1A4-A2
D312
L1
R1
L2
R2
R3
L3
L
R
L
R
R
L
J901
6P
1
C305
0.1
C415
0
R304
LTC614TKFP8T146
Q480
51
0.1
C501
1.5k
R462
37
1
C460
0.01
C500
0.01
C318
1A4-A2
D307
2200p
C486
4
3
1
2
XC61CN2802NR
IC503
VOUT
VIN
NC
VSS
0.22
C302
1A4-A2
D308
11
9
1k
R473
MAZ8068GMLS0
D118
1SR154-400TE-25
D855
FB14
16V
3300
C701
1A4-A2
D301
7
1A4-A2
D302
1
C306
16V
100
C414
1A4-A2
D304
41
1N5404-C311-3
D701
10k
R506
150
R303
LTC614TKFP8T146
Q483
0.01
C503
1
C304
10
50V
10
C482
50V
10
C485
5
3.3k
R457
0
R306
100p
C470
50V
22
C303
16V
10
C319
12
45
47
39
3
56
I2C_SCK
I2C_SIO
I2C_SCK
I2C_SIO
BT_R
BT_L
(3/4)
MAIN BOARD
IC401
ELECTRICAL VOLUME, INPUT SELECT
IC503
RESET SIGNAL GENERATOR
+3.3V REGULATOR
IC502
POWER AMP,
IC301
REGULATOR
(CHASSIS)
SUB
AUDIO OUT
AUDIO OUT
REAR
AUDIO OUT
FRONT
MUTING
MUTING
Q482-485
MUTING CONTROL
MUTING CONTROL
MUTING CONTROL
Q470, 471
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
10A
32V
FU701
J
4
B
16
6
21
9
11
D
15
H
L
10
K
17
3
5
12
C
F
18
M
N
1
19
E
8
G
20
14
A
2
13
I
7
RL-
RL-
RL+
RL+
FL-
FL-
FL+
FL+
FR-
FR-
FR+
FR+
RR-
RR-
RR+
RR+
ATT
AMP REM
BATT
GND
MAX 0.3A
ACC
AMT REM
BATT
GND
FRONT LCH-
FRONT LCH+
REAR LCH+
REAR LCH-
REAR RCH+
REAR RCH-
FRONT RCH+
FRONT RCH-
ACC
GND
BATT
ATT
AMP REM
MAX0.3A
ACC
AMT REM
ANT REM
MAX0.1A
(BT4700U)
(BT4750U)
TO
CN701
TO
CN701
0
R487
0
R486
50
55
SA_CLK
0
R465
SA_DA
0
R466
SA_OUT
0
R467
0.033
C454
4700p
C453
3.3k
R456
0.033
C462
4700p
C461
3.3k
R463
MC2836
D494
6.3V
330
C329
4.7k
R703
(Page 26)
(Page 27)
(Page 29)
(Page 27)
Click on the first or last page to see other MEX-BT4700U / MEX-BT4750U service manuals if exist.