Sony STR-DA3000ES Service Manual page 78

STR-DA3000ES
IC642 CXD9725M
TRIM VOLUME
VSS 1
0-+24dB/
1dB STEP
TRIM 2
5 to 25 DECODER
LATCH CIRCUIT
TRIM 3
TRIM 4
OUT 5
MAIN
VOLUME
0- –95dB/
0.5dB STEP
VRGND 6
4 to 13 DECODER
LATCH CIRCUIT
NC 7
4 to 16 DECODER
VRIN 8 LATCH CIRCUIT
NC 9
CS1 10
GND 11
CLK 12
– DIGITAL Board –
IC2005 TC74HC151AF (EL)
D3 1 16 V
CC
D2 2 D2 D3 D4 15 D4
3 14
D1 D1 D5 D5
4 D0 D6 13
D0 D6
Y 5 Y D7 12 D7
XY 6 11 A
W A
OE 7 S C B 10 B
GND 8 9 C
78
TRIM VOLUME
0-+24dB/
1dB STEP
5 to 25 DECODER
& &
LATCH CIRCUIT
4 to 13 DECODER
& &
LATCH CIRCUIT
4 to 16 DECODER
& &
LATCH CIRCUIT
24 BIT
SHIFT REGISTER
CIRCUIT
LEVEL SHIFT
CIRCUIT
24 VDD
23 TRIM
22 TRIM
21 TRIM
20 OUT
MAIN
VOLUME
0- –95dB/
0.5dB STEP
19 VRGND
18 NC
17 VRIN
16 NC
15 CS2
14 LAT
13 DATA
IC2008, 2461, 2462 TC74HC595AF (EL)
16 15 14 13
VCC
12 11
SHIFT REGISTER
LATCH
2 3 4 5 6 7
1
PARALLEL DATA
OUTPUT
10 9
GND
8