Read Sony MEX-BT3700U / MEX-BT3750U Service Manual online
MEX-BT3700U/BT3750U
MEX-BT3700U/BT3750U
7
7
(1/4)
1
(2/4)
BOARD
7
MAIN
(4/4)
BOARD
6
MAIN
MAIN
BOARD
5
BOARD
MAIN
(2/4)
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
3.3
3.3
0
3.3
0
3.3
13.8
0
13.8
13.8
0
C905
1000p
6
0.22
C323
220
R493
LTC614TKFP8T146
Q484
1A4-A2
D305
0
R463
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
10k
R479
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
100p
C499
1
C455
38
4.7k
R309
54
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
0
R456
GND_1
220
R490
0
R464
1000p
C930
C519
1000p
100k
R500
TDA8588AJ/N2/R1
IC301
1
TAB
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
SERVO-3.3V
32
GND
33
MECHA-6V
34
PANEL+B
35
VP
36
CBU
37
BU+B
4.7k
R701
1
C307
16V
10
C317
1A4-A2
D309
2
1
C456
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
1k
R489
RT1P141C-TP-1
Q493
0.22
C313
1
C314
100p
C471
1A4-A2
D311
1k
R488
1SR154-400TE-25
D306
1
TU_RCH
1
C308
10k
R482
48
50V
10
C413
0.01
C325
46
2200p
C487
0
R469
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
0
R468
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
1
2
3
3P
CN410
SUB_OUT
GND
SUB_OUT
100p
C475
1SR154-400TE-25
D855
10k
R478
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
0
R457
0
R306
100p
C470
50V
22
C303
16V
10
C319
12
45
47
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)
(MONO)
SUB OUT
J401
IN
BUS AUDIO
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
AEP, UK
BT3700U:
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
(BT3700U: AEP, UK)
(BT3700U: US, CND/BT3750U: E, EA, MX)
TO
CN701
TO
CN701
TO
CN701
TO
CN701
RL+
FL+
GND
GND
ACC
FR+
RR+
RL+
FL+
FR+
RR+
RL-
FL-
FR-
ILL
BATT
BATT
ACC
ILL
RR-
RL-
FL-
FR-
RR-
ATT
(BT3750U: IND (for Gasoline car))
AMP REM
MAX 0.3A
ANT REM
MAX 0.1A
ANT REM
MAX 0.1A
RL+
FL+
GND
GND
ACC
FR+
RR+
RL+
ACC
ANT REM
RR+
FL+
ILL
FR+
RL-
FL-
FR-
BATT
ILL
BATT
RR-
RR-
FL-
FR-
RL-
ATT
(BT3750U: IND (for Diesel car))
AMP REM
MAX 0.3A
ANT REM
2-5. SCHEMATIC DIAGRAM - MAIN Board (3/4) -
(Page 5)
(Page 6)
(Page 8)
(Page 6)
Click on the first or last page to see other MEX-BT3700U / MEX-BT3750U service manuals if exist.