Sony STR-K685, Service Manual

Page: 34 / 52

34
STR-K685
IC1452 PCM1602APT IC1503 TC7WH157FU
1
2
3
4
8
7
6
5
Vcc
1Y
2B
2A
1A
1B
2Y
GND
SYSTEM
CLOCK
MANAGER
SYSTEM
CLOCK
FUNCTION
CONTROL
INTERFACE
SERIAL
INPUT
INTERFACE
4X/8X
OVER SAMPLING
DIGITAL
FILTER
WITH
FUNCTION
CONTROLLER
ENHANCED
MULTI-
LEVEL
DELTA-
SIGMA
MOJULATOR
ZERO DETECT
DAC
AND LPF
OUTPUT AMP
DAC
DAC
DAC
DAC
DAC
DAC
DAC
RST
SCKI
SCKO
BCK
TEST
VDD
DGND
DATA1
DATA2
DATA3
ZEROA
LRCK
37
38
39
40
42
43
44
45
46
47
48
41
ZERO1/GPO1 ZERO2/GPO2 ZERO3/GPO3 ZERO4/GPO4 ZERO5/GPO5 ZERO6/GPO6
NC NC
VOUT6 VOUT5 VOUT4 VOUT3
1 2 3 4 5 6 7 8 9 10 11 12
VOUT2
VOUT1
VCOM
VOUT7
AGND5
VCC5
AGND6
VOUT8
AGND4
VCC4
AGND3
VCC3
13
14
15
16
17
18
19
20
21
22
23
24
ML MC MDI MDO
ZERO8 DATA4 ZERO7
NC VCC1 AGND1 VCC2 AGND2
36 35 34 33
31 30
29 28 27 26 25
32
AND LPF
OUTPUT AMP
AND LPF
OUTPUT AMP
AND LPF
OUTPUT AMP
AND LPF
OUTPUT AMP
AND LPF
OUTPUT AMP
AND LPF
OUTPUT AMP
AND LPF
OUTPUT AMP
IC400 M61542FP
– MAIN Board –
– DIGITAL Board –
2
1
55 53 56 54
16 17
3
4
5
6
5 Input selector
7
8
9
10
11
12
15
13
19
18 20 21 22 23 24
25 26 27 28
5 Input selector
45
29
30
32
31
Volume
14
Input ATT
(for ADC)
Input ATT
(for ADC)
36
35
33
34
Volume
37
38
40
39
Volume
GND
SRC
SLOUT
SLC
SLVIN
SLIGO
CIGO
CVIN
CVC
COUT
SWOUT
SWC
SWVIN
SWIGO
SLOUT
RECR2 RECR1 RECL1 LIGO LVIN LV
C
LOUT ROUT RVC RVIN RIGO SRIGO SRVIN RECL2
INL5
INR5
INL4
INR4
INL3
INR3
INL2
INR2
INL1
INR1
ADIFL
ADIFR
GND
LIN
RIN
SLIN
SRIN
CIN
SWIN
GND GND
D
ATA
CLOCK
DVDD
A
VCC
GND
AVEE
44
43
41
42
Volume
52 51 49 50
V
olume
46 48 47
V
olume
MCU I/F