Sony D-V7000 Service Manual page 17

• IC Block Diagrams
– MAIN Board (1/2) –
IC301 TC74VHC157F
SELECT 11 1 16 V
CC
S
1A 2 1A G 15 STROBE
INPUT
3 14 4A
1B 1B 4A
4B
4 13
OUTPUT 1Y 1Y 4B
5 11 12 4Y
2A 2A 4Y
INPUT
6 11 3A
2B 2B 3A
2Y 7 2Y 3B 10 3B
OUTPUT
3Y
GND 8 9 3Y
IC360 BA3574BFS
MUTE SW 11
PW SW 12 P.SW
IN 1 13
IN 2 14
BIAS OUT 15
BIAS IN 16
RF OUT 17
RIPPLE
FILTER
RF IN 18
BEEP IN 19
V 20
CC
IC320 TC9434AFNEL
INPUT
OUTPUT
INPUT
OUTPUT
MUTE
BEEP
24 23 22 21
INPUT INTERFACE
CIRCUIT
DIGITAL FILTER CIRCUIT,
DIGITAL BASS BOOST CIRCUIT,
ATTENUATOR OPERATIONAL CIRCUIT,
DE-EMPHASIS FILTER CIRCUIT
∆Σ MODULATOR CIRCUIT
OUTPUT
CIRCUIT
TEST
CIRCUIT
ANALOG
FILTER
1 2 3 5 6 7
4
10
MUTE
9 LP
BB SW 8 MUTE SW
7 AVC
AVC DET
6 AVC IN
5
MIX OUT
4 OUT 1
3
VREF
2
OUT 2
1
GND
– 33 –
20 19 18 17 16 15 14 13
CPU INTERFACE
OSCILLATOR
CIRCUIT
TIMING GENERATOR
OUTPUT
CIRCUIT
ANALOG
FILTER
9 10 11 12
8