Sony HCD-MG110, Service Manual

Page: 24 / 74

HCD-MG110/MG310AV
24 24
R-MUTE
10 11
6 12
9 8
REAR OUTPUT
SELECT SWITCH
IC307
R-CH R-CH
DBFB
SWITCH
Q141
DBFB LEVEL
CONTROL
Q142
R-CH
R-CH
POWER AMP
IC501
MUTING
Q517, 518
MUTING
CONTROL
Q522
MUTING
Q501
MUTING
CONTROL
Q502, 516
R-CH
65
STK-MUTE
44
A-MUTE
23
R-MUTE
21
C-MUTE
STK-MUTE
A-MUTE
R-MUTE
C-MUTE
34
FRONT
35
REAR
47
DBFB-ON
48
DBFB-H/L
49
SURROUND
STK MUTE
STK MUTE
R-CH
MUTING
Q602, 603
MUTING
CONTROL
Q341, 342
MUTING
Q601
POWER AMP
IC602
MUTING
CONTROL
Q343, 344
C-MUTE
Q524
POWER ON
MUTING
Q521
D513
AU +9V
PROTECT
DETECT
Q514
PROTECTOR
Q505, 508
+
D501
OVER LOAD
DETECT
Q506, 507
+ + +
+
+ + +
OVER LOAD
DETECT
Q604, 605
OVER LOAD
DETECT
Q606
MUTING
Q519, 520
MUTING
CONTROL
Q523
+
–
+
–
+
–
40
R-RELAY
HP CHK
F-RELAY
55
F-RELAY
45
HP-CHK
DC DETECT
Q513, 515
RY502
RY503
RELAY DRIVE
Q504, 510
HP CHK F-RELAY
RELAY DRIVE
Q503, 509
J501 (2/2)
M391
(FAN)
J502
REAR
IMPEDANCE
USE 8
Ω
L
R
SURROUND
SPEAKER
CENTER
IMPEDANCE
USE 8
Ω
+
–
+
–
FRONT SPEAKER
IMPEDANCE
USE 8
Ω
L
R
PHONE
J503
RY501
SURROUND
AMP
IC308
SURROUND
SWITCH
Q301
DBFB AMP
IC303
SYSTEM CONTROLLER
IC801 (4/5)
D389
D395, 399
• SIGNAL PATH
: TUNER
• R-ch is omitted due to same as L-ch.
FRONT
L-CH
G (Page 23)
REAR
L-CH
J
(Page 23)
CENTER
H
(Page 23)
J501 (1/2)
(HCD-MG110)
(HCD-MG310AV)
(HCD-MG110)
(HCD-MG310AV)
(Australian model)
+
+
+
+
D503
FAN MOTOR
DRIVE
Q391, 392
M
7-4. BLOCK DIAGRAM – AMP Section –
Ver 1.1