Block Diagram - Amp Section - Sony HCD-MG510AV Service Manual

HCD-MG510AV
5-4. BLOCK DIAGRAM – AMP Section –
FRONT
L-CH
G
(Page 19)
DBFB
SWITCH
Q141
D395, 399
D389
REAR
L-CH
J
(Page 19)
CENTER
(Page 19) H
SW
Z
(Page 19)
47 48
DBFB AMP
IC303
POWER AMP
IC501
R-CH
MUTING MUTING
DBFB LEVEL
Q517, 518 Q501
CONTROL
Q142
MUTING MUTING
R-CH
CONTROL CONTROL
Q522 Q502, 516
R-CH
STK MUTE
Q524
STK MUTE
REAR OUTPUT
SELECT SWITCH
IC307
11 10
POWER AMP
8 9 IC602
R-CH
6 12
MUTING
Q602, 603
R-CH R-CH
MUTING
R-MUTE
CONTROL
Q341, 342
MUTING
Q601
POWER AMP
IC601
MUTING
C-MUTE
CONTROL
Q343, 344
MUTING
Q232
MUTING
SW-MUTE
CONTROL
Q333, 334
35 34 65 44 23 21 38
OVER LOAD
DETECT
Q506, 507
TERMINAL D501
TH501
DETECT
Q511, 512
AU +9V
DC DETECT
+
Q513, 515
POWER ON PROTECT
MUTING DETECT
Q514
Q521
PROTECTOR
Q505, 508
D513
OVER LOAD
DETECT
Q604, 605
OVER LOAD
DETECT
Q608
OVER LOAD
DETECT
Q607
SYSTEM CONTROLLER
IC801 (4/5)
20 20
+ + + +
RY501
MUTING RELAY DRIVE
Q519, 520 Q504, 510
MUTING
CONTROL
+
Q523
+
D503
+ + + + +
RY502
+ +
RY503
RELAY DRIVE
Q503, 509
40 55 45
J503
PHONE
J501 (1/2)
+
L
–
FRONT SPEAKER
IMPEDANCE
+
USE 8Ω
R
–
M391
(FAN)
FAN MOTOR
M
DRIVE
Q391, 392
J501 (2/2)
+
L
–
REAR
IMPEDANCE
+
USE 8Ω
R
–
SURROUND
+
CENTER SPEAKER
IMPEDANCE
–
USE 8Ω
+
SUPER WOOFER
IMPEDANCE
–
USE 8Ω
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
: TUNER