Read Sony STR-K402 Service Manual online
20
20
STR-K402
IC501 STK350-230 (MAIN BOARD)
1
2
3
4
5
6
7
8
9
TR3
R1
R2
TR4
TR6
TR7
R4
R9
TR5
TR1
TR2
R6
D4 D3
R7
R8
TR8
D1 D2
R5
R3
INPUT
NF
-VEOUT
+VEOUT
V
SS
GND
V
CC
SUB
IC701 uPC2581V (MAIN BOARD)
IC702 uPC2581V (MAIN BOARD)
IC702 uPC2581V (MAIN BOARD)
PROTECTOR
DRIVE
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15
PRE
DRIVE
PRE
DRIVE
BIAS CIRCUIT
REG
MUTE
+VOUT1
–VOUT1
COMP1
NF1
IN1
GND
IN2
NF2
COMP2
–VOUT2
+VOUT2
VCC1
VCC2
VEE
DRIVE
3-15. IC BLOCK DIAGRAMS
IC1008 AK4527 (DIGITAL BOARD)
1
2
3
4
5
6
7
8
9
10
11
33
32
31
30
29
28
27
26
25
24
23
12 13 14 15 16 17 18 19 20 21 22
44 43 42 41 40 39 38 37 36 35 34
FORMAT
CONVERTER
AUDIO
INTERFACE
INPUT
CIRCUIT
OUTPUT
CIRCUIT
CIRCUIT
LOOP1
LOOP0/SDA/CDTI
DIF1/SCL/CCLK
DIF0/CSN
P/SN
MCLK
DZF1
AVSS
AVDD
VREFH
VCOM
DZF2
RIN+
RIN–
LIN+
LIN–
ROUT1
LOUT1
ROUT2
LOUT2
ROUT3
LOUT3
DEM1
DEM0
TVDD
DVDD
DVSS
PDN
ICKS2
ICKS1
ICKS0
CAD1
CAD0
SDOS
I2C
SMUTE
BICK
LRCK
SDTI1
SDTI2
SDTI3
SDTO
DAUX
DFS
IC1015 NJM2279D (VIDEO BOARD)
VIN3
V-
14
SW2
13
VIN1
12
MUTE1
11
VOUT1
10
NC
9
V+
8
1
SW1
2
AMP
VIN2
3
MUTE2
4
VOUT2
5
GND2
6
GND1
7
AMP
IC950 NJM2103D (STANDBY BOARD)
1
2
3
4
5
6
7
8
V+
VSB/SESIN
VSA
RESET
GND
OUTC
VSC
CR
VREF
+
–
–
+
–
+
–
+
Q
R
S
IC1004 LC89055W-RA8 (DIGITAL BOARD)
46
43
40
37
34
31
47
44
41
38
35
32
48
45
42
39
36
33
25
26
27
28
29
30
3
6
9
12
15
18
2
5
8
11
14
17
1
4
7
10
13
16
24
23
22
21
20
19
X'TALL
DATA
RECOVER
TIMING
PLL
INPUT
MICRO COMPUTER
INTERFACE
FS
CALCULATION
LOCK
DETECTION
Pa, Pb
DETECTION
Cbit
DETECTION
CSFLAG
F0/P0/C0
F1/P1/C1
F2/P2/C2
VF/P3/C3
DVDD
DGND
AUTO
BPSYNC
ERROR
DO
DI
CE
CL
XSEL
MODE0
MODE1
DGND
DVDD
DOSEL0
DOSEL1
CKSEL0
CKSEL1
XMODE
AUDIO
ENPHA
XIN
XOUT
XMCK
DVDD
DGND
XSTATE
DATAO
DGND
BCK
CKOUT
AGND
AVDD
LPF
VIN
R
DVDD
DGND
DIN2
DIN1
DIN0
DOUT
DISEL
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