Read Sony HT-DDW970 / STR-K970P Service Manual online
13
13
STR-K970P
STR-K970P
3-2. BLOCK DIAGRAM – DISPLAY/POWER SECTION –
• R-CH is omitted due to same as L-CH.
IN2
8
12
+V OUT2
POWER AMP
IC701
POWER AMP
IC601
9
NF2
LIMITER
Q701,702
11
-V OUT2
IN2
12
+V OUT2
9
NF2
11
-V OUT2
BOOSTER
Q703
BOOSTER
Q704
CURRENT
DETECT
Q705,706
AF POWER
PROTECT
Q740
LIMITER
Q651,652
BOOSTER
Q653
BOOSTER
Q654
CURRENT
DETECT
Q655,656
IN2
8
12
+V OUT2
POWER AMP
IC501
9
NF2
LIMITER
Q501,502
11
-V OUT2
BOOSTER
Q503
BOOSTER
Q504
CURRENT
DETECT
Q505,506
2
+V OUT1
5
NF1
LIMITER
Q571,572
3
-V OUT1
BOOSTER
Q533
BOOSTER
Q534
CURRENT
DETECT
Q535,536
D721
PROTECT
SWITCH
Q722,723,725
RELAY
DRIVE
Q790
RY791
RELAY
DRIVE
Q710
RY701
D731
RELAY
DRIVE
Q610
RY601
RY610
D733
RELAY
DRIVE
Q810
RELAY
DRIVE
Q550
RY501
D734
L
R
SR
SL
C
R-CH
R-CH
R-CH
PHONES
TM601
TM610
61
PROTECTOR
62
HP RY
66
FRONT RY
69
REAR RY
68
C/SB RY
67
SP_B_RY
RV102
ENCODER
3
1
VOL_ENC(B)
46
VOL_ENC(A)
45
POWER KEY
56
?/1
S131
77
RSTX
48
STOP
54
SIRCS
72
BRIGEABLE RY
63
FUSE DETECT
REMOTE
CONTROL
RECEIVER
1
IC102
D910-913
AC
IN
T902
RY901
D915
F901
T2AL/250V
D914
RELAY
DRIVE
Q901
D920-923
23
VCC5
84
VCC3
-7V
REG
3
2
+7V
REG
1
3
AUDIO
+7V
IC801
IC802
POWER RY
58
RELAY
+B
D805-808
82
83
X0
X1
X1101
24MHz
F1
F2
L
SL
SL
C
A
IN1
6
SBL
J791
FLUORESCENT
INDICATOR TUBE
FL101
59
FL_DATA
60
FL_CLK
57
FL_LAT
7
DIN
8
CLK
9
STB
14 29
SEG1-16
42 31
GRID1-12
F1
F2
1
SW1
2
SW2
3
SW3
4
SW4
FL DRIVE
IC100
D101-104
FUNCTION
KEY
A/D0
38
S100-110
S140-143,
S148-153
S148-153
FUNCTION
KEY
A/D1
39
FUNCTION
KEY
A/D2
40
S120-125,
S128-130
S128-130
SYSTEM CONTROL
IC1101(3/3)
• Signal Path
: FM
AF POWER
PROTECT
Q640
AF POWER
PROTECT
Q540
AF POWER
PROTECT
Q580
IC691
2
1
FRONT A
FRONT B
SURROUND
IC691
5
7
55
HP DETECT
BUFFER
IC101
35
AVCC
+3.3V
REG
3
1
IC1904
AUDIO
-7V
+10V
REG
3
1
TUNER
+10V
IC1902
RY801
T901
Q921
AC DET
1
2
IC1111
D802
R803
+B
-B
-B
SWITCH
Q691,692
RELAY
DRIVE
Q809
-20V REG
Q801
FL101
-20V
POWER AMP
-B
+5V
REG
3
1
IC1031
+5V
+2.5V
REG
5
+2.5V
+3.3V
REG
2
4
IC1901
+3.3V
+5V
REG
3
1
IC1001
AUDIO
+5V
SPEAKERS
IMPEDANCE USE 6-16
MASTER
VOLUME
VOLUME
8
RESET
+3.3V(STBY)
MAIN
SECTION
TM501
CENTER
SB
SURROUND
BACK
Q110
LED DRIVE
BLUE LED
47
MUMLTI CHANNEL
DECODING
D105
(Page 12)
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