Block Diagram - Power Amp Section - Sony STR-DA3300ES Service Manual

6-6. BLOCK DIAGRAM – POWER AMP Section –
PRE DRIVE
FRONT-L Q1501 – 1505
BIAS
Q1521
PRE DRIVE
SL
Q1701 – 1705
BIAS
Q1871
32
(Page
32)
PRE DRIVE
SBL Q1801 – 1805
BIAS
Q1771
PRE DRIVE
C Q1601 – 1605
BIAS
Q1571
(DA3300ES)
L PREOUT
R-CH
SL PREOUT
R-CH
33
SBL PREOUT
(Page
32)
R-CH
C PREOUT
W PREOUT
RY4051 RY4052
RELAY DRIVE
Q4051
STR-DA3300ES/DG1100
BOOSTER
Q1507, 1508
CURRENT CURRENT
LIMITTER
DETECT DETECT
IC1901
Q1522, 1523 Q1524
RV1501
BIAS ALIGNMENT
BOOSTER
Q1707, 1708
CURRENT CURRENT
DETECT DETECT
Q1872, 1873 Q1874
RV1851
BIAS ALIGNMENT
BOOSTER
Q1807, 1808
CURRENT CURRENT
DETECT DETECT
Q1772, 1773 Q1774
RV1751
BIAS ALIGNMENT
R-CH
R-CH
BOOSTER
Q1607, 1608
CURRENT CURRENT
DETECT DETECT
Q1572, 1573 Q1574
RV1551
BIAS ALIGNMENT
(DG1100)
RY4053 RY4054 RY4081
RELAY DRIVE RELAY DRIVE RELAY DRIVE RELAY DRIVE
Q4052 Q4053 Q4054 Q4081
HP SW
HP-RY RELAY DRIVE
LIMITTER
Q1009
DETECT LIMITTER
Q1907, 1908
37
LEVEL (Page 36)
PROTECT
DETECT
Q1904 – 1906
R-CH
SP-A RELAY DRIVE
SP-B RELAY DRIVE
REAR-RY RELAY DRIVE
SB-RY
RELAY DRIVE
C-RY RELAY DRIVE
J4051
L
FRONT
R
L
SURROUND
R
PRE OUT
L
SUR
BACK
R
J4052
CENTER
SUB
WOOFER
J4081
PRE OUT
SUB
WOOFER
PREOUT-RY
33 33
J702
R-CH PHONES
RY1009
TB1001
+
L
−
FRONT A
+
−
R
+
−
L
+ FRONT B
−
R
Q1007
RY1007
Q1008
RY1008
TB4001
SPEAKERS
+
− L
SURROUND
+
R-CH
−
R
+
− L
SURROUND
+
R-CH
BACK
−
R
Q4001
RY4001
Q4002
RY4002
TB1301
+
− CENTER
Q1006
RY1006
HP SW
HPSW
HP-RY
HP-RY
SP-A
SP-A-RY
SP-B
SP-B-RY
5
REAR-RY
REAR-RY
SB-RY (Page 28)
SB-RY
C-RY
C-RY
PREOUT-RY
PREOUT-RY
STR-DA3300ES/DG1100
• R-CH is omitted due to same as L-CH.
• SIGNAL PATH
: AUDIO (ANALOG)