Main Board - Sony STR-K685 Service Manual

STR-K685
– DIGITAL Board –
IC1452 PCM1602APT
36 35 34 33
FUNCTION
RST 37
CONTROL
INTERFACE
SYSTEM
SCKI 38
SYSTEM
CLOCK
CLOCK
SCKO 39
MANAGER
BCK 40
LRCK 41
TEST 42
4X/8X
OVER SAMPLING
SERIAL
DIGITAL
VDD 43
INPUT
FILTER
INTERFACE
WITH
DGND 44
FUNCTION
CONTROLLER
DATA1 45
DATA2 46
DATA3 47
ZEROA 48
ZERO DETECT
1 2 3 4 5
– MAIN Board –
IC400 M61542FP
GND 1
INL5 2
INR5
3
INL4 4
INR4 5
INL3 6
INR3 7
INL2 8
INR2 9
INL1
10
INR1
11
AVEE 12
ADIFL
13
ADIFR
14
15
34
32 31 30
29
DAC
DAC
DAC
ENHANCED
MULTI-
DAC
LEVEL
DELTA-
SIGMA
MOJULATOR
DAC
DAC
DAC
DAC
6 7 8
56 55 54 53
Input ATT
(for ADC)
Input ATT
(for ADC)
16 17
28 27 26 25
24
23
22
21
OUTPUT AMP
20
AND LPF
19
OUTPUT AMP
AND LPF
18
17
OUTPUT AMP
AND LPF
16
OUTPUT AMP
AND LPF
15
OUTPUT AMP
AND LPF
14
OUTPUT AMP
AND LPF
13
OUTPUT AMP
AND LPF
OUTPUT AMP
AND LPF
9 10 11 12
Volume
Volume
Volume
Volume
MCU I/F
18 20 21 22 23 24
19 25 26 27 28
IC1503 TC7WH157FU
1
1A
2
1B
VCC3
AGND3
VCC4
2Y
3
AGND4
GND
4
VOUT8
AGND6
VCC5
AGND5
VOUT7
VCOM
VOUT1
VOUT2
42 SRC
41 SLOUT
SLOUT
40
SLC
39
SLVIN
38
37 SLIGO
36 CIGO
CVIN
35
34 CVC
COUT
33
32 SWOUT
SWC
31
30
SWVIN
29 SWIGO
8
Vcc
7
1Y
2B
6
2A
5