Block Diagram — Display/Power Section - Sony STR-K670P Service Manual

Q Q
3-2. BLOCK DIAGRAM — DISPLAY/POWER SECTION —
3 7 6 3 1 5 1 5 0
• R-CH is omitted due to same as L-CH
L
• Signal Path
: FM
SL SL
MAIN A
SECTION
C
FL101
FLUORESCENT
T E
L 1 3 9 4 2 2 9 6 5 1 3
INDICATOR TUBE
SW
F1 F2
14 29 42 31
SEG1-16 GRID1-12
IC100
FL DRIVE
7 8 9
IC101
BUFFER
59 60 57
82 83 38 39 40
w w w
X1101
24MHz
FUNCTION FUNCTION FUNCTION
KEY KEY KEY
S131-139 S100-108 S110-116
STR-K670P
IC501
POWER AMP
Q503
+V OUT2 12
BOOSTER
Q501,502
LIMITER
8 IN2 NF2 9
Q505,506
Q504
-V OUT2 11 CURRENT
BOOSTER
DETECT
IC601
POWER AMP
Q603
+V OUT2 12
BOOSTER
Q601,602
LIMITER
8 IN2 NF2 9
Q605,606
Q604
-V OUT2 11 CURRENT
BOOSTER DETECT
POWER AMP
IC701
Q703
+V OUT2 12
BOOSTER
Q701,702
LIMITER
8
IN2 NF2 9
Q705,706
Q704
-V OUT2 11 CURRENT
BOOSTER
DETECT
Q753
+V OUT1 2
BOOSTER
IC502 Q751,752
WOOFER AMP LIMITER
6
3 7 IN1 NF1 5
Q755,756
Q754
-V OUT1 3 CURRENT
BOOSTER
DETECT
D883
Q881-883
PROTECT
SWITCH
62 66 69 68 61
SYSTEM CONTROL
IC1101(3/3)
46 45 56
x a o
3 1
y
S152
ENCODER
?/1
RV102
. i
MASTER
VOLUME
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8
R-CH
RY502
Q509
RELAY
DRIVE
RY501
Q507 D731 Q508
AF POWER RELAY R-CH
PROTECT DRIVE
R-CH
RY601
D733
Q607 Q608
AF POWER RELAY
PROTECT DRIVE
RY701
D734 Q708
Q707
AF POWER RELAY
PROTECT DRIVE
Q Q
3 7 6 3
IC850 IC850
2 1 5
55
FUSE DETECT 63
IC102
REMOTE
1
SIRCS 54 CONTROL
RECEIVER
AVCC 35
+3.3V(STBY)
VCC3 84
VCC5 23
IC1111
1 RESET 2
RSTX 77
STOP 48
58
u 1 6 3
.
13 13
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2 4
9 9 8
J700
PHONES
TM600
L
FRONT
R
C
CENTER
SPEAKERS
TM601
SR
SURROUND
SL
SW SUB WOOFER
IC1901
+3.3V
+3.3V 2
REG
4
+2.5V
+2.5V 5
REG
IC1031
+5V
+5V 3 1
1 5 1 5 0 8 9 2 4
REG
D811
+B
-B
Q851,852
POWER AMP
-B
-B
SWITCH
7
FL101 Q801
-20V
-20V REG
D920-923
RELAY
+B
IC821
AUDIO +7V
1 3
+7V REG
Q471
+3.3V
+3.3V REG
IC822
AUDIO
-7V
3 2
-7V
REG
IC1001 IC1902
AUDIO
+5V TUNER +10V
3 1 3 1
+5V +10V
REG REG
IC1071
TUNER +3.3V
+3.3V REG
AEP, UK, RU
IC1904
+3.3V
3 1
REG
Q911
AC DET
m
c o
STR-K670P
Ver. 1.2
2
9 9
D804-807 T901
9 8 2 9 9
E51
S901
F1 VOLTAGE
SELECTOR
F2 F901
T902
D910-913
AC
IN
D914 D915
RY901
Q901
RELAY
DRIVE