Sony STR-DA1200ES Service Manual page 76

STR-DA1200ES
– E-VOLUME Board –
IC1203, 1213, 1223, 1233 CXD9725M-HFL
NC 1
TRIM VOLUME
VSS 2
0-+24dB/
1dB STEP
TRIM 3
5 to 25 DECODER
LATCH CIRCUIT
TRIM 4
TRIM 5
OUT 6
MAIN
VOLUME
0- –95dB/
0.5dB STEP
VRGND 7
4 to 13 DECODER
LATCH CIRCUIT
NC 8
4 to 16 DECODER
VRIN 9 LATCH CIRCUIT
NC 10
CS1 11
GND 12
CLK 13
NC 14
– VIDEO Board –
IC6302, 6731 LA7213
SYNC V-SYNC
SEP SEP
1 2 3 4 5
76
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
28 NC
26 VDD
26 TRIM
25 TRIM
24 TRIM
23 OUT
MAIN
VOLUME
0- –95dB/
0.5dB STEP
22 VRGND
21 NC
20 VRIN
19 NC
18 CS2
17 LAT
16 DATA
15 NC
IC6303 TC7W53FU (TE12R)
COMMON 1
INH 2
VEE 3
GND 4
8
C
LOGIC
LEVEL OUT IN 7
CONVERTER
C
OUT IN 6
5
VCC
CH 0
CH 1
A