Sony HT-7200DH / STR-K7200 Service Manual ▷ View online
STR-K7200
STR-K7200
45
45
• See page 48 for IC Block Diagrams.
6-30. SCHEMATIC DIAGRAM - DCDC CONVERTER Board -
Z
STANDBY
CNP911
BOARD
BOARD
X
(2/2)
HDMI
CN3509
BOARD
W
CNP103
XM
CNP512
AB BOARD
T
(4/5)
DIGITAL
IC B/D
IC B/D
16.
7
6.
3
5
2.
4
3.
3
4.
3
2.
4
16.
7
35V
3300
C4002
FH4003
FH4004
C4102
0.
1
C4007
0.47
0.
1
C4004
L4102
100uH
1
3
4
5
6
7
7P
CN4102
D_GND
2
NC
+6.3V
+4.1V
DGND
+6.3V
DGND
D5SBA20-4003
D4001
~
~
FH4001
FH4002
C4009
0.47
1
3
4
5
6
7
7P
CN4101
+6.3V
2
NC
+6.3V (NC)
D_GND
D_GND
+4.1V
+4.1V
1
2
3
4
5
6
6P
CN4001
AC-R2-17V
AC-R2-17V
GND
GND
AC-R2-17V
AC-R2-17V
35V
1000
C4003
35V
C4100
1000
470
R4001
R4101
470
100uH
L4000
L4100
100uH
100uH
L4001
JW4000
C4006 0.47
C4011
0.47
0.47
C4012
RB060M-30
D4803
RB051LA-40TR
D4804
1.5k
R4000
680
R4002
R4100 1.5k
R4102
680
1
2
3
4
5
SI-8050S-LF1101
IC4001
1
2
3
4
5
SI-8033S
IC4100
16V
1000
C4005
16V
C4103
1000
+3.3V REGULATOR
IC4100
+5V REGULATOR
IC4001
DCDC CONVERTER BOARD
VI
N
SW OUT
GND
VOS
S.
S
VI
N
GND
SW OUT
S.
S
VOS
F4001
T3.15AL/250V
T3.15AL/250V
F4002
D
B
5
3
1
C
E
8
9
6
7
4
A
2
(Page 47)
(Page 39)
(Page 28)
(Page 33)
STR-K7200
STR-K7200
46
46
6-31. PRINTED WIRING BOARD - STANDBY Board -
•
: Uses unleaded solder.
• See page 20 for Circuit Boards Location.
C
B
E
BE
B
E
B
E
D950
D951
D952
D953
D955
D990
D991
Q901
Q951
Q955
R903
R904
Q990
C910
C911
R955
R956
R957
C950
C951
C952
R990
R991
R993
D901
D910
D911
D912
D913
C999
1
4
1
3
1
6
1
6
3
1
5
CNP910
CNP911
CNP913
JS903
JS950
F901
B900
R901
R902
R910
R911
CN912
FH901
FH902
C912
C913
RY901
JW900
C954
C955
JW905
JW906
JW907
JW908
JW909
JW910
JW911
JW912
JW913
JW914
ET901
C992
CNP901
CNP902
T904
STANDBY BOARD
(CHASSIS)
(CHASSIS)
1
1
3
4
9
5
Z
DCDC
CONVERTER
BOARD
CN4001
K
MAIN
BOARD
CNP912
U
N
J
DIGITAL
AB
BOARD
CNP505
(AC IN)
MAIN
BOARD
CNP940
MAIN
BOARD
CNP921
T901
MAIN POWER
TRANSFORMER
1-875-591-
12
(12)
SUB POWER
TRANSFORMER
A
B
C
D
E
1
2
3
4
5
6
(Page 44)
(Page 31)
(Page 21)
(Page 21)
(Page 21)
Ref. No. Location
• Semiconductor
Location
D901
C-4
D910
D-3
D911
D-4
D912
D-4
D913
D-4
D950
D-2
D951
D-2
D952
D-2
D953
D-2
D955
D-3
D990
D-2
D991
D-2
Q901
C-4
Q951
C-3
Q955
C-4
Q990
C-3
STR-K7200
STR-K7200
47
47
6-32. SCHEMATIC DIAGRAM - STANDBY Board -
BOARD
CN4001
CONVERTER
Z
DCDC
(4/5)
DIGITAL
U
CNP505
AB BOARD
BOARD
(3/3)
CNP912
K
MAIN
(3/3)
MAIN
J
CNP940
BOARD
(3/3)
N
CNP921
MAIN
BOARD
0
13. 7
13. 9
14. 8
7.1
0
0.6
0.8
0.2
50V
1
C992
1
R902
FH901
FH902
RY901
E
ET901
25V
C955
1000
JS950
1
2
3
3P
CNP910
R2 AC
R2 CENTER TAP
R2 AC
25V
1000
C913
1
3
3P
CNP901
LIVE
NEUTRAL
25V
2200
C912
16V
C954
6800
1
4
4P
CNP902
LIVE
NEUTRAL
F901
0.1
C910
0.1
C911
2SC3052EF-T1-LEF
Q990
22k
R991
10k
R993
47k
R990
0.
1
C951
0.
1
C950
1SR154-400TE-25
D955
MA2J1110GLS0
D901
MA2J1110GLS0
D991
MA2J1110GLS0
D990
R955
2.2k
1
2
3
4
5
6
6P
CNP911
AC-R2-17V
AC-R2-17V
GND
GND
AC-R2-17V
AC-R2-17V
1
3
4
5
6
7
8
9
2
T904
2SC3052EF-T1-LEF
Q901
2SC3052EF-T1-LEF
Q955
2.2k
R956
2.2k
R903
2SB1132-T100-R
Q951
0.1
C999
1/2W
0.22
R910
1/2W
0.22
R911
JS903
C952
0.1
47k
R904
47k
R957
1
3
4
5
6
6P
CN912
+15V
2
NC
R2 GND IN
STBY GND
-15V
R2 RETURN GND
1
2
3
4
5
6
6P
CNP913
+15V
POWER_RY
STANDBY GND
STOP (AC-OFF-DET)
STANDBY (+9V)
SUB-T (CEC)
1/2W
3.3M
R901
D910
1SR154-400TE-25
D911
1SR154-400TE-25
1SR154-400TE-25
D913
1SR154-400TE-25
D912
D953
1SR154-400TE-25
1SR154-400TE-25
D952
1SR154-400TE-25
D951
1SR154-400TE-25
D950
STANDBY BOARD
(AC IN )
(CHASSIS)
(CHASSIS)
B900
5A/125V
TRANSFORMER
SUB POWER
AC OFF DETECT
RELAY DRIVE
Q951, 955
B+ SWITCH
T901
MAIN POWER
TRANSFORMER
D
B
F
5
3
G
1
C
E
8
9
6
7
4
A
2
(Page 24)
(Page 28)
(Page 45)
(Page 24)
(Page 24)
STR-K7200
STR-K7200
48
48
• IC Block Diagrams
– MAIN Board –
– MAIN Board –
IC400 BD3471KS2
1
GND
2
HPFN
3
LPF01
4
LPF02
5
LPFN2
6
LPFN1
7
SWVOL
8
VCC
9
DGND
10
DA
11
CL
12
VEE
13
FROUT
14
FLOUT
15
SWOUT
16
COUT
17
SROUT
18
SLOUT
19
SBROUT
20
SBLOUT
21
GND
22
GND
23
RECL4
24
RECR4
25
RECL3
26
RECR3
27
RECL2
28
RECR2
29
RECL1
30
RECR1
40
GND
39
INR13
38
INL13
37
INR14
36
INL14
35
INR15
34
INL15
33
INR16
32
INL16
31
GND
60 INR3
59 INL3
58 INR4
57 INL4
56 INR5
55 INL5
54 INR6
53 INL6
52 INR7
51 INL7
50 INR8
49 INL8
48 INR9
47 INL9
46 INR10
45 INL10
44 INR11
43 INL11
42 INR12
41 INL12
61
INL2
62
INR2
63
INL1
64
INR1
65
GND
66
SBLIN1
67
SBRIN1
68
SBLIN1
69
SLIN1
70
SRIN1
71
CIN1
72
FLIN1
73
FRIN1
75
ADCR
76
ADCL
74
GND
78
SUB1R
79
SUB1L
77
GND
80
GND
ADC
SWITCH
FR
VOLUME
SUB1
LOGIC
SWITCH
SWITCH
SWITCH
SWITCH
FL
VOLUME
SW
VOLUME
C
VOLUME
SR
VOLUME
SL
VOLUME
SBR
VOLUME
SBL
VOLUME
EQ
REC
SUB2
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
SWITCH
SWITCH
SWITCH
SWITCH
SWITCH
IC600, 700, 800 μPC2581V-S
2
3
5
4
6
7
9
8
1
MUTE
+ VOUT1
– VOUT1
COMP1
MF1
IN1
GND
IN2
NF2
COMP2
– VOUT2
+ VOUT2
VCC1
VCC2
VEE
PROTECTOR
BIAS CIRCUIT
REG
DRIVE
PRE
DRIVE
11
10
12
13
15
14
DRIVE
PRE
DRIVE
– DIGITAL AB Board –
IC1008 TC74VHC157FT (EL)
SELECT 11
1
1A 2
3
4
5
6
7
INPUT
INPUT
OUTPUT
OUTPUT
1A
1B
1Y
2A
2B
2Y
1B
1Y
2A
2B
2Y
GND 8
V
CC
STROBE
16
4A
15
14
13
11
12
11
10
INPUT
INPUT
OUTPUT
OUTPUT
G
4B
4Y
3A
4A
4B
4Y
3A
3B
9
3B
3Y
3Y
S
IC1012 SI-3050KM-TL
IC1013 SI-3033KM-TL
IC1013 SI-3033KM-TL
1
VC
TSD
2
VIN
3
GND
4
VOUT
5
ADJ
+
–
REF
IC1016 TC74VHC393FT (EL)
14
13
12
11
10
9
8
1
2
3
4
5
6
7
Q
A
Q
B
Q
C
Q
D
A
CLEAR
VCC
Q
A
Q
B
Q
C
Q
D
A
CLEAR
GND
IC1017 TC7WH157FK (TE85R)
SELECT
11
6
ST
11
7
A 1
2
3
A
B
Y
5
Y
B
GND 4
VCC
8
Y
EN G
Y
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