Sony STR-K670P - Block Diagram - DISPLAY;POWER Section

1313
STR-K670P
STR-K670P
3-2. BLOCK DIAGRAM — DISPLAY/POWER SECTION —
• R-CH is omitted due to same as L-CH
IN2
8
12
+V OUT2
POWER AMP
IC501
POWER AMP
IC601
9
NF2
LIMITER
Q501,502
11
-V OUT2
IN2
12
+V OUT2
9
NF2
11
-V OUT2
BOOSTER
Q503
BOOSTER
Q504
CURRENT
DETECT
Q505,506
AF POWER
PROTECT
Q507
LIMITER
Q601,602
BOOSTER
Q603
BOOSTER
Q604
CURRENT
DETECT
Q605,606
IN2
8
12
+V OUT2
POWER AMP
IC701
IC502
WOOFER AMP
9
NF2
LIMITER
Q701,702
11-V OUT2
BOOSTER
Q703
BOOSTER
Q704
CURRENT
DETECT
Q705,706
IN1
6
2
+V OUT1
5
NF1
LIMITER
Q751,752
3-V OUT1
BOOSTER
Q753
BOOSTER
Q754
CURRENT
DETECT
Q755,756
D883
PROTECT
SWITCH
Q881-883
RELAY
DRIVE
Q509
RY502
RELAY
DRIVE
Q508
RY501
D731
RELAY
DRIVE
Q608
RY601
D733
RELAY
DRIVE
Q708
RY701
D734
L
R
SR
SL
C
SW
R-CH
R-CH
R-CH
PHONES
TM601
TM600
61
PROTECTOR
62
HP RY
66
FRONT RY
69
REAR RELAY
68
C/SB RY
RV102
ENCODER
3 1
VOL_ENC(B)
46
VOL_ENC(A)
45
POWER KEY
56
?/1
S152
77
RSTX
48
STOP
54
SIRCS
63
FUSE DETECT
REMOTE
CONTROL
RECEIVER
1
IC102
D910-913
AC
IN
T902
RY901
E51
D915
F901
D914
RELAY
DRIVE
Q901
D920-923
23
VCC5
84
VCC3
-7V
REG
3 2
+7V
REG
1 3
AUDIO
+7V
IC821
IC822
POWER RY
58
RELAY
+B
D804-807
82 83
X0
X1
X1101
24MHz
F1
F2
L
SLSL
C
SW
A
J700
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
FL DRIVE
IC100
FUNCTION
KEY
A/D0
38
S100-108S131-139
FUNCTION
KEY
A/D1
39
FUNCTION
KEY
A/D2
40
S110-116
SYSTEM CONTROL
IC1101(3/3)
• Signal Path
: FM
AF POWER
PROTECT
Q607
AF POWER
PROTECT
Q707
IC850
21
FRONT
SURROUND
SUB WOOFER
CENTER
IC850
57
55
HP DETECT
BUFFER
IC101
35
AVCC
+3.3V
REG
3 1
IC1904
AUDIO
-7V
+10V
REG
3 1
TUNER
+10V
AEP, UK, RU
TUNER
+3.3V
IC1902
T901
+3.3V REG
Q471
Q911
AC DET
1 2
IC1111
+3.3V
D811
+B
-B
-B
SWITCH
Q851,852
-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
+3.3V
REG
IC1071
AUDIO
+5V
SPEAKERS
MASTER
VOLUME
8
RESET
+3.3V(STBY)
S901
VOLTAGE
SELECTOR
MAIN
SECTION
7
3
Ver. 1.2
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
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