Block Diagram - Power Amp Section - Sony STR-DA4400ES Service Manual

STR-DA4400ES
6-8.

BLOCK DIAGRAM - POWER AMP Section -

FRONT-L
(Page 33) 45
L PREOUT
SL PREOUT
(Page 33)
46
SBL PREOUT
C PREOUT
W PREOUT
STR-DA4400ES
PRE DRIVE BOOSTER
Q1501 – 1505 Q1507, 1508
CURRENT
BIAS
DETECT
Q1521
Q1522, 1523
RV1501
BIAS ALIGNMENT
PRE DRIVE BOOSTER
SL
Q1701 – 1705 Q1707, 1708
CURRENT
BIAS
DETECT
Q1721
Q1722, 1723
RV1701
BIAS ALIGNMENT
PRE DRIVE BOOSTER
SBL
Q1801 – 1805 Q1807, 1808
CURRENT
BIAS
DETECT
Q1821
Q1822, 1823
RV1801
BIAS ALIGNMENT
PRE DRIVE BOOSTER
C Q1601 – 1605 Q1607, 1608
CURRENT
BIAS
DETECT
Q1871
Q1872, 1873
RV1851
BIAS ALIGNMENT
R-CH
R-CH
R-CH
RY1101 RY1102 RY1103 RY1104
RELAY DRIVE RELAY DRIVE RELAY DRIVE RELAY DRIVE
Q1101 Q1102 Q1103 Q1104
CURRENT LIMITTER
LIMITTER
LIMITTER
DETECT DETECT
IC1901
Q1524 Q1907, 1908
4/8
(Page 38)
LEVEL
PROTECT
DETECT
Q1904 – 1906
CURRENT
DETECT
Q1724
CURRENT
DETECT
Q1824
R-CH
R-CH
CURRENT
DETECT
Q1874
J1101
L
FRONT
R
L
SURROUND
R
J1102
PRE OUT
L
SUR
BACK
R
CENTER
SUB
WOOFER
34 34
HP SW
R-CH
HP-RY RELAY DRIVE
Q1402
RY1401
50
R-CH
SP-A RELAY DRIVE
Q4001
RY4001
SP-B RELAY DRIVE
Q4002
RY4002
R-CH
R-CH
REAR-RY
RELAY DRIVE
Q4102
RY4102
SB-RY RELAY DRIVE
Q4101
RY4101
C-RY RELAY DRIVE
Q4003
RY4003
HP SW
HPSW
HP-RY
HP-RY
SP-A
SP-A-RY
SP-B
SP-B-RY
REAR-RY
REAR-RY
SB-RY
SB-RY
C-RY
C-RY
PREOUT-RY PREOUT-RY
PREOUT-RY
J702
PHONES
TM4002
+
L
−
FRONT A
+
−
R
+
− L
FRONT B
+
−
R
TM4101
SPEAKERS
+
L
−
SURROUND
+
−
R
+
− L
SURROUND
+
BACK (ZONE 2)
−
R
TM4001
+
CENTER
−
• R-CH is omitted due to same as L-CH.
• SIGNAL PATH
: AUDIO (ANALOG)
5 (Page 27)