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STR-K7000
19
19
STR-K7000
4-7. BLOCK DIAGRAM — POWER SECTION —
POWER AMP
Q701-704
CURRENT
DETECT
Q705,706
RY791
RY600
RY601
RY701
PRE DRIVER
IC701
SPEAKERS
IMPEDANCE
USE 6-16
Ω
R
L
FRONT B
L
SURROUND
CENTER
R
R-CH
R-CH
R-CH
L-CH
R-CH
SL-CH
C-CH
R-CH
SR-CH
R-CH
RY901
RY801
AC1
AC2
F2
+3.3V
(STBY)
+2.6V
+5V-1
-7V
+7V
TU+10V
-20V
RECT
D910-913
T902
POWER
TRANSFORMER
D914
AC IN
DETECT
Q921
D915
AC IN
~
OVERLOAD
DETECT
D740,Q740
POWER AMP
Q501-504
CURRENT
DETECT
Q505,506
-20V REG
Q801
B- SWITCH
Q691,692
RELAY
DRIVER
Q901
PRE DRIVER
IC501
OVERLOAD
DETECT
D540,Q540
POWER AMP
Q651-654
CURRENT
DETECT
Q655,656
PRE DRIVER
IC601
OVERLOAD
DETECT
D640,Q640
RELAY
DRIVER
Q790
RELAY
DRIVER
Q610
RY501
RELAY
DRIVER
Q550
PROTECTOR
D721,722,732
Q722,723,725,793,795
F1
IC691
-B-1
-B
+3.3V
IC1901
+5V-2
IC1001
IC1904
IC1902
-15V
+15V
IC801
IC802
IC1031
+B
+B-1
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
RECT
D802
RECT
D920-923
RECT
D805-808
T901
POWER
TRANSFORMER
TM602
R
FRONT A
L
R-CH
TM601
TM502
J791
PHONES
HP-RY
SB-RY
FRONT RY
REAR-RY
CENTER RY
HP DETECT
HP-RY
HP DETECT
SB-RY
FRONT-RY
REAR-RY
CENTER RY
-B-1 +B-1
-B-1 +B-1
-B-1 +B-1
RELAY
DRIVER
Q710
RELAY
DRIVER
Q809
R810
R811
F901
R910
RELAY
SWITCH
B+ SWITCH
Q693-695
RELAY
DRIVER
Q800
D1110
D1108
D1107
D1111
• Signal path
: TUNER (FM/AM)
• R-ch is omitted due to
same as L-ch.