Block Diagram - Amp Section - Sony STR-DH550 Service Manual

5-3. BLOCK DIAGRAM – AMP Section –
POWER AMP
Q620
FL
Q622
Q624
Q625
Q670
FR
Q672
Q674
Q675
DH750
POWER AMP
Q820
SBL
Q822
Q824
Q825
Q870
SBR
Q872
>004B
Q874
ANALOG AUDIO
Q875
SECTION
(Page 15)
POWER AMP
Q720
SL
Q722
Q724
Q725
Q770
SR
Q772
Q774
Q775
POWER AMP
Q570
C
Q572
Q574
Q575
STR-DH550/DH750
BOOSTER
Q600
CURRENT
LIMITER
DETECT
Q602, Q603
Q604
BOOSTER
Q601
BOOSTER
Q650
CURRENT
LIMITER
DETECT
Q652, Q653
Q654
BOOSTER
Q651
BOOSTER
Q800
CURRENT
LIMITER
DETECT
Q802, Q803
Q804
BOOSTER
Q801
BOOSTER
Q850
CURRENT
LIMITER
DETECT
Q852, Q853
Q854
BOOSTER
Q851
BOOSTER
Q700
CURRENT
LIMITER
DETECT
Q702, Q703
Q704
BOOSTER
Q701
BOOSTER
Q750
CURRENT
LIMITER
DETECT
Q752, Q753
Q754
BOOSTER
Q751
BOOSTER
Q550
CURRENT
LIMITER
DETECT
Q552, Q553
Q554
BOOSTER
Q551
TH251
TH252
69 70
SYSTEM CONTROL
IC2001 (3/6)
CURRENT
RELAY
DETECT D600
DRIVER
Q605
Q929
CURRENT
RELAY
DETECT D650
DRIVER
Q655
Q350
CURRENT
DETECT D800
Q805
RELAY
DRIVER
Q360
CURRENT
D850
DETECT
Q855
CURRENT
DETECT D700
Q705
RELAY
DRIVER
Q355
CURRENT
DETECT
D750
Q755
RELAY
DRIVER
Q365
D2304
CURRENT
DETECT D550
Q555
D2302
D2303
PROTECTOR
Q320 ~ Q321,
Q323 ~ Q325
18 67 23 14 13 12 15 11
17 17
J101
PHONES
RY380
TB501 (1/2)
+
L
-
FRONT A
+
R
-
RY350
TB503
+
L SURROUND BACK/
-
BI-AMP/ FRONT HIGH/
+
R FRONT B
-
RY360
SPEAKERS IMPEDANCE USE 6-16
TB502
+
L
-
SURROUND
+
R
-
RY355
TB501 (2/2)
+
CENTER
-
RY365
>007B
DISPLAY/POWER
BRIDGEABLE RELAY
SECTION
(Page 20)
4
: AUDIO
STR-DH550/DH750