Sony STR-DB798 Service Manual page 59

IC173 TC9273F-012 (EL)
VSS 1
S1 2
S2 3
S3 4
S4 5
S5 6
10BIT 10BIT
S6 7 LATCH LATCH
CIRCUIT CIRCUIT
(L-CH) (R-CH)
S7 8
S8 9
S9 10
S10 11
S11 12
GND 13
LEVEL SHIFT & SHIFT REGISTER
CK 14
– MAIN Board –
IC401, 501, 601, 651 CXD9725M
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
28 VDD
27 S1
26 S2
25 S3
24 S4
23 S5
22 S6
21 S7
20 S8
19 S9
18 S10
17 S11
16 STB
15 DATA
TRIM VOLUME
0-+24dB/
1dB STEP
5 to 25 DECODER
&
LATCH CIRCUIT
MAIN
VOLUME
0- –95dB/
0.5dB STEP
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
22 VRGND
21 NC
20 VRIN
19 NC
18 CS2
17 LAT
16 DATA
15 NC
STR-DB798
59