Block Diagram - Audio Output Section - Sony STR-DA2800ES Service Manual

5-3.

BLOCK DIAGRAM - AUDIO OUTPUT Section -

POWER AMP
IC512
NF1 5
+VOUT1 2
L_OUT 6 IN1
–VOUT1 3
POWER AMP
IC517
NF1 5
+VOUT1 2
SL_OUT 6 IN1
–VOUT1 3
POWER AMP
>006B IC507
(Page 44)
NF1 5
+VOUT1 2
SBL_OUT 6 IN1
–VOUT1 3
POWER AMP
IC502
NF1 5
+VOUT1 2
C_OUT 6 IN1
–VOUT1 3
R-ch is omitted due to same as L-ch.
SIGNAL PATH
: AUDIO
STR-DA2800ES
BOOSTER
IC513
CURRENT
LIMITER
DETECT
Q521, 522
Q520, 523
BOOSTER
IC514
D510
BOOSTER
IC515
CURRENT
LIMITER
DETECT
Q525, 526
Q524, 527
BOOSTER
IC516
D512
BOOSTER
IC505
CURRENT
LIMITER
DETECT
Q509, 510
Q508, 511
BOOSTER
IC506
D504
BOOSTER
IC500
CURRENT
LIMITER
DETECT
Q501, 502
Q500, 503
BOOSTER
IC501
D500
PROTECTOR
Q302 – 306
62 174
>008B
HP SW
(Page 52)
–2
–1
RELAY DRIVE
RY306
Q311
–2
–1
R-CH
RELAY DRIVE
RY305
Q310
–1
–2
R-CH
RELAY DRIVE
RY304
Q309
–2
–1
R-CH
RELAY DRIVE
RY302
Q307
–1
RELAY DRIVE
RY303
Q308
D322
D320
D321
D319
D323
21 26 23 24 22
MAIN SYSTEM
CONTROLLER
IC2501 (3/5)
45 45
J171
PHONES
TB300
+
L
–
FRONT A
–
R
+
+
L
–
SURROUND
–
R
+
SPEAKERS
TB503
SURROUND BACK/
+
FRONT HIGH/
L
–
FRONT B/ZONE 2
TB504
+ SURROUND BACK/
FRONT HIGH/
R
–
FRONT B/ZONE 2
TB502
+
CENTER
–
STR-DA2800ES