Display/Power Section - Sony STR-K650P Service Manual

– DISPLAY/POWER Section –
L
• R-CH is omitted due to same as L-CH
• Signal Path
: FM
SL SL
A
C
FL101
FLUORESCENT
INDICATOR TUBE
SW
F1 F2
IC100
FL DRIVE
D102-105
14 29 42 31
SEG1-16 GRID1-12 SW1 1
SW2 2
SW3 3
SW4 4
7 8 9
IC101
BUFFER
61 62 63 22
82 83 38 39 40
X1601
16MHz
FUNCTION FUNCTION FUNCTION FUNCTION
KEY KEY KEY
S100-106 S110-115 S120-125 S130-135
IC701
POWER AMP
Q703
+V OUT2 12
BOOSTER
Q701,702
LIMITER
8 IN2 NF2 9
1 MUTING
Q705,706
Q704
-V OUT2 11 CURRENT
BOOSTER
DETECT
IC702
POWER AMP
Q653
+V OUT2 12
BOOSTER
Q651,652
LIMITER
8 IN2 NF2 9
1 MUTING
Q655,656
Q654
CURRENT
-V OUT2 11
BOOSTER DETECT
POWER AMP
IC501
Q503
+V OUT 6
BOOSTER
Q501,502
LIMITER
1 IN+ IN- 2
Q505,506
Q504
-V OUT 5 CURRENT
BOOSTER
DETECT
D721
Q722,723,725
PROTECT
SWITCH
IC401
5 7
Q747,748
POWER
MUTING
66 67 71 69 70 68
SYSTEM CONTROL
IC1601(3/3)
41 59 60 56
3 1
S152
ENCODER
KEY
?/1
RV102
MASTER
VOLUME
R-CH
RY791
Q790
RELAY
DRIVE
RY701
Q740 D731 Q710
AF POWER RELAY R-CH
DRIVE
PROTECT
R-CH
RY601
D733
Q640 Q610
AF POWER RELAY
PROTECT DRIVE
RY501
D734
Q540 Q550
AF POWER RELAY
PROTECT DRIVE
RY560
Q560
RELAY
DRIVE
IC601 IC601
2 1 5 7
25
FUSE DETECT 55
IC102
REMOTE
g
SIRCS 54 1 CONTROL
RECEIVER
AVCC 35
+3.3V(STBY)
VCC3 84
VCC5 23
IC1602
RESET
RSTX 77 1 2
STOP 48
65
B
RESET
9 9
J791
PHONES
TM602
L
FRONT
R
SPEAKERS
TM601
SR
SURROUND
SL
C CENTER
IC1901
+3.3V
+3.3V 2
REG
4
+2.5V
+2.5V 5
REG
D902-905
IC1903
J405
+5V
+5V
SUB 3 1
AUDIO
REG
OUT WOOFER
D802
+B
-B
Q691,692
POWER AMP
-B
-B
SWITCH
FL101 Q801
-30V
-30V REG
D820-823
RELAY
+B
IC801
AUDIO +7V
1 3
+7V REG
Q471
+3.3V
+3.3V REG
IC802
AUDIO -7V
3 2
-7V REG
IC1503 IC807
VIDEO +5V
AUDIO +5V
3 1 3 1
+5V +5V REG
REG
IC804
VIDEO
-5V
3 2
-5V REG
IC1902
TUNER
+10V
3 1
+10V REG
IC1904
+3.3V
3 1
REG
Q921
AC DET
STR-K650P
T901
F1
F2
F901
T902
D910-913
AC
IN
D914 D915
RY901
Q901
RELAY
DRIVE