Sony XR-C7500R Service Manual page 32

Q Q
3 7 6 3 1 5 1 5 0
• IC Block Diagrams
– MAIN Board –
IC10 TDA7402TR
33 32 31 30
MONO-
FADER
ACINLF 34
FRONT
SWINR 35 ACIN
OUTPUT
SWINL 36
REAR
SELECTOR
ACOUTR 37
MAIN SW
ACOUTL 38
SECOND
CREF 39
LP
VOICE
BANDPASS
HP
BASS
TREBLE
VOLUME
T E
L 1 3 9 4 2 2 9 6 5 1 3
SOFTMUTE
COMPANDER
LOUDNESS LOUDNESS
MUX 40
IN-GAIN
+
IN-GAIN MUTE
+AUTO ZERO
MAIN SOURCE MIXING SECOND SOURCE
SELECTOR SELECTOR SELECTOR
MD1 41
MAIN
MD1G 42
INPUT
MULTIPLEXER FM
MD2 43
PHONO
MD2G 44
AM
MAIN CH0 AUX
1 2 3 4 5 6 7 8 9 10 11
w w w
29 28 27 26 25 24 23
MIXER
MONO- MONO- MONO- MONO- MONO-
FADER FADER FADER FADER FADER
SUBWOOFER
+PHASE
CONTROL
22 VDD
21 SCL
20 SDA
SUPPLY 19 GND
HIGH-CUT
18 SM
S&H PULSE
FORMER
25kHz
QUAL 17 QUAL
LP
16 MPOUT
MULTIPATH
DEMODULATOR
DETECTOR
15 MPIN
+STEREO ADJUST
+STEREO BLAND
BEEP
D/A
14 LEVEL
CONVERTER
PILOT
CANCELATION
PIL DET
PLL
80kHz
13 MPX
LP
AM/FM
12 AMIF
NOISE BLANKER
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IC50 SAA6588T/V2-118
20 18
19
MULTI
PATH
57kHz
DETECTOR
8th ORDER
BAND-PASS FILTER
CLOCKED
COMPARATOR
RDS/RDBS RDS/RDBS
DEMODULATOR DECODER
TEST OSCILLATOR
CONTROL & CLOCK
1 2 4 5 6
3
IC100 CXD2726Q-4
Q Q
3 7 6
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58
SERIAL DATA
I/F
PLCLK 81 MICRO
COMPUTER
XECKSTP 82
I/F
AVDP 83
VSS4
84
T. P 85
T. P 86
T. P 87 512kbit
DELAY
T. P
88
RAM
T. P 89
T. P 90
T. P 91
T. P 92
T. P
93
T. P 94
VDD4 95
AVSD 96
T. P
97
T. P 98
T. P 99
AVDD 100
u 1 6 3
y 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 29 30
32 32
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2 4
8 9 9
17 15 14
16 13 12 11
POWER SUPPLY PAUSE
& RESET DETECTOR
SIGNAL QUALITY
DECODER
4 5
4
CLOCK
CLOCK
INTERFACE
DATA
REGISTER
DATA
IIC BUS SLAVE
TRANSCEIVER
7 8 9 10
3 1 5 1 5 0 8 9
57 56 55 54 53 52
SERIAL
DATA
I/F
ADC2
ADC1
–
DAC6
DIGITAL
+
DSP
FILTER
–
DAC5
+
–
DAC4
+
CLOCK CLOCK
GENERATOR/ GENERATOR/
TIMING CIRCUIT TIMING CIRCUIT
–
DAC3
+
PLL
–
DAC2
+
–
DAC1
+
m
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.
2
8 9 9
2 4 9 8 2 9 9
51
50 AVS6
49 AVD2
48 AVS2
47 RREF
46 RIN
45 AVS8
44 AVD8
43 AOUTR2
42 AVSX
41 XTLI38
40 XTLO38
39 AVDX
38 AOUTL2
37 AVD7
36 AVS7
35 LIN
34 LREF
33 AVS1
32 AVD1
31 AVS5