Read Sony MEX-BT2800 / MEX-BT2807E / MEX-BT2850 Service Manual online
MEX-BT2800/BT2807E/BT2850
MEX-BT2800/BT2807E/BT2850
28
28
• IC Block Diagrams
– MAIN Board –
IC1 TEF6617T/V1/S470, 518
AMRFIN 1
AMRFDEC 2
FMIN2 3
FMIN1 4
LOUT 8
ROUT 9
MPXOUT 13
RSSI 14
XTAL2 15
XTAL1 16
GNDAUD 10
GNDRF 5
VCC+8.5V 6
AMRFAGC 7
AMIFAGC 11
MPXIN 12
AMOUT2
32
AMOUT1
31
AMIFAGC1
30
AMSELIN2
29
VCOLOOP
25
VCCVCO
24
VREF+4V
20
SDA
19
SCL
18
GNDDIG
17
GNDANA
23
AMSELIN1
28
TESTCT
27
VCOREF
26
VCC+8.5V
22
GREGSUP
21
AM
TUNER
FM
TUNER
OUTPUT
PLL
TUNING
SYSTEM
I2C BUS
POWER
SUPPLY
STEREO DECODER
HIGH CUT
SOFT MUTE
NOISE BLANKER
SIGNAL
IMPROVEMENT
CONTROL
BANDWIDTH
CONTROL
IC401 BD3447AFV-E2
21
22
29
30
23
24
40
FIL
GND
SDA
SCL
OUT
-FR
OUT
-FL
OUT
-RR
OUT
-RL
SUB-R
SUB-L
SAOUT
SADA
MIN1
MIN2
EBIAS2
DS2-R
DS1-R
DS3-R
SACLK
39
38
37
VCC
36
27
28
25
26
31
32
33
34
35
20
19
12
11
18
17
1
BUS-R
BUS-L
TU-R
TU-L
CD-L
AUX-R
AUX-G
AUX-L
PD-R
PD-G
PD-L
FP1
FN2
FP2
EBIAS1
DS2-L
DS1-R
DS3-R
FN1
2
3
4
CD-R
5
14
13
16
15
10
9
8
7
6
I2C BUS
LOGIC,
VCO
FADER
FADER
FADER
HPF
LPF
GND
ISO AMP
GND
ISO AMP
180
q/0q
3 BAND P-EQ (TONE CONTROL)
7 BAND
SPECTRUM ANALYZER
/LEVEL METER
EFFECT
VOLUME/MUTE
INPUT GAIN
INPUT SELECTOR (3 SIGLE-END AND 3 STEREO IS O)
FADER
FADER
SPEANA
LVL METER
LVL METER
SPEANA
GND
ISO AMP
GND
ISO AMP
GND
ISO AMP
GND
ISO AMP
IC580 BA8271F-E2
1
2
3
4
5
6
7
8
9
10
14
13
12
11
VCC
BUS ON
LINK OFF
CLK OUT
DA
TA
OUT
DA
TA
IN
BUS RESET
BUS DA
TA
VREF
BUS CLK
GND
BUS ON IN
BUS ON OUT
RESET
RESET
SWITCH
IC681, 800 TK11133CSCL-G
CONTROL
CIRCUIT
BANDGAP
REFERENCE
+
–
OVER HEAT &
OVER CURRENT
PROTECTION
1
VCONT
3
NP
2
GND
4
VOUT
5
VIN
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