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STR-DH720/DH720HP
STR-DH720/DH720HP
18
18
5-6. BLOCK DIAGRAM – POWER KEY Section –
6
2
3
DRIVE
PRE DRIVER
IC701
IN 1
+VOUT1
-VOUT2
8
12
11
IN 2
+VOUT2
-VOUT2
FL-CH
FR-CH
FL-CH
FR-CH
SL-CH
SBL-CH
SBR-CH
SR-CH
SL-CH
SR-CH
+3.3V
(STBY)
+5V
-5V
+4V
+6V
-7V
+7V
87
6
2
3
DRIVE
PRE DRIVER
IC601
IN 1
+VOUT1
-VOUT2
8
12
11
IN 2
+VOUT2
-VOUT2
99
80
+5V
(STBY)
-5V
REG
IC202
+3.3V
REG
IC2107
1.1V
(STBY)
2
3
POWER OPERATION AMP
IC2803
-15V
+15V
+7V
REG
IC350
-7V
REG
IC352
+5V
REG
IC201
+4V
REG
2
1
IC1500
+6V
REG
2
1
IC1600
FRONT_SPK_A_R
Y
HP_R
Y
SBL-SBR_R
Y
C/SL-SR_R
Y
PREOUT_SW_R
Y
HP_DET
FRONT_SPK_A_RY
PROTECTOR
2
BRIDGEABLE_RY
HP_DET
FUSE_DET(RESERVE)
STOP
79
4
HP_RY 3
100
PREOUT_SW_RY
98
C/SL-SR_RY
FRONT_SPK_A_RY
HP_DET
SBL-SBR_RY
HP_RY
PREOUT_SW_RY
C/SL-SR_RY
SYSTEM
CONTROL
IC2105 (5/5)
PRE
DRIVE
C-CH
6
2
3
DRIVE
PRE DRIVER
IC501
IN 1
+VOUT1
-VOUT2
PRE
DRIVE
SW-CH
PRE
DRIVE
6
2
3
DRIVE
PRE DRIVER
IC801
IN 1
+VOUT1
-VOUT2
8
12
11
IN 2
+VOUT2
-VOUT2
PRE
DRIVE
1
SBL-SBR_RY
4
SIGNAL
SELECTOR
IC2032
PHONES
J790
R
L
L
SUBWOOFER
AUDIO OUT
CENTER
SURROUND
R
TB503
TB504
TB503
J405
FRONT
SPEAKERS
IMPEDANCE
USE 8-16
ȍ
F901
POWER TRANSFORMER
(SUB)
T902
AC IN
~
RECT
D921
F912
F913
RY901
D990
F910
F911
F940
F941
RECT
D910-913
RECT
D941
D2303
D2302
D2110
PROTECTOR
D326-327, Q320-321,
Q323-325
POWER AMP
Q701-704,
Q751-754
POWER AMP
Q551-554
POWER AMP
Q601-604,
Q651-654
POWER AMP
Q801-802,
Q503-504,
Q851-854
RY350
RY365
RY301
RY375
RELAY
DRIVER
Q375
RELAY
DRIVER
Q365
RELAY
DRIVER
Q301
RELAY
DRIVER
Q350
RY920
RELAY
DRIVER
Q920
RY355
RELAY
DRIVER
Q355
R
SURROUND BACK/
FRONT HIGH
L
TB502
RY360
RELAY
DRIVER
Q360
CURRENT
DETECT
Q711,712
CURRENT
DETECT
Q761,762
CURRENT
DETECT
Q861,862
CURRENT
DETECT
Q550,555
CURRENT
DETECT
Q611,612
CURRENT
DETECT
Q661,662
CURRENT
DETECT
Q811,812
RELAY
DRIVER
Q901
AC IN
DETECT
Q990
RECT
D993-D994
T901
POWER TRANSFORMER
(MAIN)
6LJQDOSDWK
: TUNER (FM/AM)
5FKLVRPLWWHGGXHWR
VDPHDV/FK
62
1
UART_SEL
TUNER/
AUDIO
SECTION
(Page 13)
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