Block Diagram - Power Key Section - Sony STR-DH720 Service Manual

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