Block Diagram - Amp Section - Sony STR DA2400ES - 7.1 Channel Home Theater AV Receiver Service Manual

STR-DA2400ES/DG920
6-4.

BLOCK DIAGRAM - AMP Section -

L_OUT, SL_OUT, SBL_OUT,
C_OUT, SW_OUT L_OUT
(Page 29) 22
SL_OUT
SBL_OUT
C_OUT
SW_OUT
Abbreviation
ECE : Continental European, East European and Russian models
R-ch is omitted due to same as L-ch.
SIGNAL PATH
STR-DA2400ES/DG920
POWER AMP
IC500
NF2 9
BIAS RV470
8 IN2 (DA2400ES: AEP, ECE, UK)
Q471, 472
BIAS ALIGNMENT
–VOUT2 11
POWER AMP
IC600
NF2 9
BIAS RV570
8 IN2 (DA2400ES: AEP, ECE, UK)
Q571, 572 BIAS ALIGNMENT
–VOUT2 11
POWER AMP
IC400
NF2 9
BIAS RV670
8 IN2 (DA2400ES: AEP, ECE, UK)
Q671, 672
BIAS ALIGNMENT
–VOUT2 11
POWER AMP
IC700
NF1 5
BIAS RV400
6 IN1 (DA2400ES: AEP, ECE, UK)
Q421, 422
BIAS ALIGNMENT
–VOUT1 3
LIMITER
VEE
SWITCH
(FOR POWER AMP)
Q1902
LIMITER
SWITCH
Q1903
: AUDIO (ANALOG)
BOOSTER
Q473
CURRENT AF POWER
DETECT SENSOR
Q475, 476 Q477
BOOSTER
Q474
BOOSTER
Q573
CURRENT AF POWER
DETECT SENSOR
Q575, 576 Q577
BOOSTER
Q574
BOOSTER
Q673
CURRENT AF POWER
DETECT SENSOR
Q675, 676 Q677
BOOSTER
Q674
BOOSTER
Q423
CURRENT AF POWER
DETECT SENSOR
Q425, 426 Q427
BOOSTER
Q424
AF POWER
PROTECTOR
Q720, 728, 729
AMP B–
LIMITER OVER LOAD
CONTROL DETECT
Q1907, 1908 IC1901
D4007
D4005
D4006
D4008
D4009
D4004
LIMITER D1907 D1911
CONTROL
Q1901, 1914
23 172
30 30
–2
–1
RELAY DRIVE
RY500
Q505 TM601 (DG920)
TM602 (DA2400ES)
–2
–1
RELAY DRIVE
RY601
Q601
–2
–1
R-CH
RELAY DRIVE
RY611
Q611
TB1501 (DA2400ES)
TB1503 (DG920)
–2
–1
R-CH
RELAY DRIVE
RY1502
Q1502
–2
–1
R-CH
RELAY DRIVE
RY1501
Q1501
TB1502 (DA2400ES)
TB1504 (DG920)
RELAY DRIVE
RY1503
Q1503
J406
RELAY DRIVE
RY401
Q560
17 22 21 19 18 20 10 54
SYSTEM CONTROLLER
IC8014 (4/7)
J702
PHONES
+
L
–
FRONT A
–
R
+
+
L
–
FRONT B
–
R
+
+
L
–
SPEAKERS
SURROUND
–
R
+
+
L
–
SURROUND BACK
–
R
+
+
CENTER
–
SUBWOOFER
AUDIO OUT
(DG920)
PROTECTOR
25 (Page 34)
RELAY
23 (Page 29)