Sony STR-K7200 - Av Receiver Component Service Manual page 48

STR-K7200
• IC Block Diagrams
– MAIN Board –
IC400 BD3471KS2
80 79 78 77 76 75 74 73 72 71 70 69 68
GND 1
SUB1 ADC
HPFN 2
LPF01 3
LPF02 4
LPFN2 5
6
LPFN1
SWVOL 7
VCC 8
DGND 9
DA 10
LOGIC
CL 11
VEE 12
FR
FROUT 13
VOLUME
FL
FLOUT 14
VOLUME
SW
EQ
VOLUME
SWOUT 15
C
COUT 16
VOLUME
SR
SROUT 17
VOLUME
SL
SLOUT 18
VOLUME
SBR
SBROUT 19
VOLUME
SBL
SBLOUT 20
VOLUME
SWITCH
SUB2
SWITCH
21 22 23 24 25 26 27 28 29 30 31 32
STR-K7200
67 66 65 64 63 62 61
SWITCH SWITCH SWITCH SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH SWITCH SWITCH
SWITCH
SWITCH
SWITCH
REC
SWITCH
SWITCH SWITCH SWITCH SWITCH
SWITCH SWITCH SWITCH
33 34 35 36 37 38 39 40
IC600, 700, 800 μPC2581V-S
BIAS CIRCUIT
PROTECTOR
PRE
REG DRIVE
DRIVE
1 2 3 4 5 6
60 INR3
59 INL3
58 INR4
57 INL4 – DIGITAL AB Board –
IC1008 TC74VHC157FT (EL)
56 INR5
55 INL5
SELECT 11 1 16 V
CC
S
1A 2 1A G 15 STROBE
INPUT
54 INR6
1B 3 1B 4A 14 4A
INPUT
1Y 4 1Y 4B 13 4B
OUTPUT
53 INL6
2A 5 2A 4Y 11 12 4Y OUTPUT
INPUT
2B 6 2B 3A 11 3A
INPUT
52 INR7
OUTPUT 2Y 7 2Y 3B 10 3B
3Y
GND 8 9 3Y OUTPUT
51 INL7
50 INR8
49 INL8
48 INR9
47 INL9
46 INR10
IC1016 TC74VHC393FT (EL)
45 INL10
14 13 12 11 10 9 8
VCC
44 INR11 Q Q Q Q
A B C D
A
CLEAR
43 INL11
CLEAR
A
42 INR12
Q Q Q Q
A B C D
GND
1 2 3 4 5 6 7
41 INL12
48 48
PRE
DRIVE
DRIVE
7 8 9 10 11 14 15
12 13
IC1012 SI-3050KM-TL
IC1013 SI-3033KM-TL
VC 1
VIN 2
GND 3
REF
VOUT 4
ADJ 5
IC1017 TC7WH157FK (TE85R)
EN G
A 1 A Y
B 2 B Y
Y 3
GND 4
TSD
–
+
8 VCC
11 7 ST
11 6 SELECT
5 Y