Block Diagram - Amp Section - Sony HCD-GNX780 Service Manual

HCD-GNX780/GNX880
7-4. BLOCK DIAGRAM – AMP SECTION –
F-L
F-R
STK MUTE
MAIN
H
SECTION
(Page 29)
SW MUTE
Q812
SW OUT
MUTE
LINE-MUTE
Q810
78
HCD-GNX780/GNX880
MAIN
G
SECTION
(Page 29)
IC600
POWER AMP
18 11
10
+
14 8
9
12
MUTING
TH629
Q604, 606, 610
THERMAL
DETECT
Q628, 630
CT VP
4 2
DC DET
D550
OUT
OVER OCP
3 1
LOAD
IC550
OVER CURRENT
PROTECTOR
IC800
POWER AMP
13
14 6
7
+
11 4
5
70
SYSTEM CONTROLLER
IC401 (4/5)
DBFB F/B
D624
+
RY646
OVER LOAD
DETECT
Q668, 618
MUTING
Q640, 641
RELAY DRIVE
Q644, 647
MUTING
CONTROL
Q634,682
Q648
HP-MUTE
HI SPEED
SWITCH
Q581
GNX880
D812
OVER LOAD
DETECT
Q800, 850
RELAY DRIVE
Q814, 815
RY862
68 60 77
30 30
J1103
PHONES
TM600
+
L
+ -
FRONT SPEAKER
+
R
-
RY665
GNX880
PROTECT
SWITCH
+
Q666
L
-
SURR SPEAKER
+
R
-
TM601
FAN DET
FAN-ON M891
FAN MOTOR M
DC FAN
FAN-K DRIVE
Q580,582,585
HI SPEED
FAN-CTL DISPLAY/POWER
I
SECTION
(Page 31)
Q583, 584
VL(AC)
DISPLAY/POWER
J
SECTION
(Page 31)
-
TM101
SUB WOOFER
OUT
+
75 36 76 100
• SIGNAL PATH
: FM