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

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