Read Sony STR-DH740 Service Manual online
STR-DH740
STR-DH740
17
17
5-3. BLOCK DIAGRAM – AMP Section –
FL
POWER AMP
LIMITER
Q602, Q603
BOOSTER
Q600
CURRENT
DETECT
Q604
CURRENT
DETECT
Q605
BOOSTER
Q601
D600
D650
D800
D850
D700
D750
D550
RY350
RY921
TB501 (1/2)
TB501 (2/2)
FRONT A
R
L
+
-
+
-
J101
PHONES
FR
Q620
POWER AMP
Q622
Q624
Q625
Q624
Q625
Q670
Q672
Q674
Q675
Q672
Q674
Q675
Q720
POWER AMP
Q722
Q724
Q725
Q724
Q725
Q570
POWER AMP
Q572
Q574
Q575
Q574
Q575
Q770
Q772
Q774
Q775
Q772
Q774
Q775
Q820
Q822
Q824
Q825
Q822
Q824
Q825
Q870
Q872
Q874
Q875
Q872
Q874
Q875
LIMITER
Q652, Q653
BOOSTER
Q650
CURRENT
DETECT
Q654
CURRENT
DETECT
Q655
RELAY
DRIVER
Q375
BOOSTER
Q651
SBL
LIMITER
Q802, Q803
BOOSTER
Q800
CURRENT
DETECT
Q804
CURRENT
DETECT
Q805
BOOSTER
Q801
LIMITER
Q852, Q853
CURRENT
DETECT
Q854
CURRENT
DETECT
Q855
SL
LIMITER
Q702, Q703
BOOSTER
Q700
CURRENT
DETECT
Q704
CURRENT
DETECT
Q705
BOOSTER
Q701
LIMITER
Q752, Q753
BOOSTER
Q750
CURRENT
DETECT
Q754
CURRENT
DETECT
Q755
BOOSTER
Q751
SYSTEM CONTROL
IC2100 (3/6)
C
PROTECT
TEMP_SENSOR_2
TEMP_SENSOR_1
LIMITER
HP_R
Y
FRONT_SPK_R
Y
SBL_SBR_R
Y
C/SL_SR_R
Y
HP_DET
LIMITER
Q552, Q553
BOOSTER
Q550
CURRENT
DETECT
Q554
CURRENT
DETECT
Q555
PROTECTOR
Q320 ~ Q325
BOOSTER
Q551
TH251
TH252
SBR
SR
RELAY
DRIVER
Q350
RELAY
DRIVER
Q360
RELAY
DRIVER
Q355
RELAY
DRIVER
Q365
RY360
TB503
SURROUND BACK/
BI-AMP FRONT HIGH/
FRONT B
R
L
+
-
+
-
SPEAKERS
RY355
TB502
SURROUND
R
L
+
-
+
-
RY365
D2119
D2118
D2120
CENTER
+
-
BOOSTER
Q850
BOOSTER
Q851
ANALOG AUDIO
SECTION
(Page 15)
(Page 15)
B
67
68
92
66 86 90
88 91
ZONE2_PREOUT_SW_R
Y
89
4
SLJQDO SDWK
: AUDIO
R-FK LV RPLWWHG GXH WR
R-FK LV RPLWWHG GXH WR
VDPH DV L-FK
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