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Sony MEX-BT2707E Service Manual Page 30

Bluetooth audio system.
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MEX-BT2700/BT2707E/BT2750
Q Q
3 7 6 3 1 5 1 5 0
• Waveforms
– MAIN Board –
IC501
(XOUT)
2.7 Vp-p
30.4 μs
1 V/DIV, 10 μs/DIV
IC501
(OSCOUT)
3.6 Vp-p
91 ns
1 V/DIV, 50 ns/DIV
IC51
(XTO)
T E
L
1 3 9 4 2 2 9 6 5 1 3
2.5 Vp-p
116 ns
1 V/DIV, 50 ns/DIV
w w w
MEX-BT2700/BT2707E/BT2750
• IC Block Diagrams
– MAIN Board –
IC1 TEF6607T/V4/S470, 518
AMRFIN 1
AM
AMRFDEC 2
TUNER
FMIN2 3
FM
TUNER
FMIN1 4
GNDRF 5
VCC+8.5V 6
AMRFAGC 7
LOUT 8
STEREO DECODER
HIGH CUT
OUTPUT
ROUT 9
SOFT MUTE
NOISE BLANKER
GNDAUD 10
AMIFAGC 11
MPXIN 12
SIGNAL
IMPROVEMENT
CONTROL
MPXOUT 13
BANDWIDTH
RSSI 14
CONTROL
XTAL2 15
XTAL1 16
IC51 TDA7333013TR
VDDA
1
REF3
2
SIGMA DELTA
REF2
3
CONVERTER
REF1
4
VSS
5
TM
6
TEST LOGIC
VDDD
7
&
RESETN
8
PIN MIX'S
SINC4
SINC4
REG
I2C/SPI
FILTER
INTERFACE
RAM BUFFER
BANDPASS
&
FILTER
CONTROL LOGIC
RDS DEMODULATOR
MPX
INTERPOLATOR
&
SYNCHRONISATION
x
a o
y
.
i
http://www.xiaoyu163.com
8
IC401 BD3447AFV-E2
40
39
38
37
I2C BUS
LOGIC,
VCO
32
AMOUT2
31
AMOUT1
30
AMIFAGC1
AMSELIN2
29
AMSELIN1
28
27
TESTCT
26
VCOREF
PLL
TUNING
25
VCOLOOP
SYSTEM
24
VCCVCO
23
GNDANA
22
VCC+8.5V
POWER
SUPPLY
21
GREGSUP
VREF+4V
20
19
SDA
I2C BUS
18
SCL
17
GNDDIG
Q
Q
3
7
6
3
16 MPX
15 INTN
14 CSN
13 SA_DATAOUT
12 SDA_DATAIN
11 SCL_CLK
10 XTO
1
2
3
9 XTI
u 1 6 3
.
30
30
2
4
9
9
8
36
35
34
33
32
31
30
29
28
27
FADER
FADER
FADER
FADER
FADER
LPF
180°/0°
HPF
1
5
1
5
0
8
9
2
4
7 BAND
3 BAND P-EQ (TONE CONTROL)
SPECTRUM ANALYZER
/LEVEL METER
VOLUME/MUTE
SPEANA
SPEANA
INPUT GAIN
INPUT SELECTOR (3 SIGLE-END AND 3 STEREO IS O)
GND
GND
GND
GND
GND
ISO AMP
ISO AMP
ISO AMP
ISO AMP
ISO AMP
4
5
6
7
8
9
10
11
12
13
m
c o
2
9
9
26
25
24
23
22
21
EFFECT
9
8
2
9
9
LVL METER
LVL METER
GND
ISO AMP
14
15
16
17
18
19
20

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