Sony XR-M500R Service Manual page 42

Q Q
3 7 6 3 1 5 1 5 0
• IC Block Diagrams
– MAIN Board –
IC100 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
SOFTMUTE
T E
L 1 3 9 4 2 2 9 6 5 1 3
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
MAIN CH0 AUX AM
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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IC102 BA3834F
18
REGISTER REGISTER REGISTER
PEAK PEAK PEAK
HOLD HOLD HOLD
68Hz 170Hz 420Hz
B.P.F. B.P.F. B.P.F.
1 2 3 4 5
Q Q
3 7 6
IC200, 201 NJM2160AM-TE2 (XR-M550)
VCCL 1
INL 2
BUFFER
SVRL
3
BUFFER
REFERENCE
INML 4
INMR 5
REFERENCE
BUFFER
SVRR 6
BUFFER
INR 7
VCCR 8
u 1 6 3
y
42 42
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2 4
8 9 9
17 16 15 14 13 12 11 10
MULTIPLEXER DECODER
REGISTER REGISTER REGISTER REGISTER
PEAK PEAK PEAK PEAK
HOLD HOLD HOLD HOLD
1kHz 2.4kHz 5.9kHz 14.4kHz
B.P.F. B.P.F. B.P.F. B.P.F.
DIFFERENTIAL
AMPLIFIER
6 7 8 9
3 1 5 1 5 0 8 9
IC400 LB1930M-TLM
VCC 1
BUFFER
NC 2
IN1 3
VCCL
16 CL+
IN2 4
15 CL–
LIFT
BUFFER
AMP
S-GND 5
VCCL
14 LGND
SIGNAL
AMP
13 OUTL
VCCR
12
OUTR
SIGNAL
AMP
11 RGND
VCCR
LIFT
AMP
10 CR–
9 CR+
m
c o
.
2
8 9 9
2 4 9 8 2 9 9
NC
10
9 OUT1
MOTOR
CONTROL
DRIVE
8 NC
CIRCUIT
CIRCUIT
7 OUT2
6 P-GND