Sony HCD-GNX80 - Block Diagram - AMP Section

HCD-GNX80
3030
HCD-GNX80
7-5. BLOCK DIAGRAM – AMP SECTION –
IC600
POWER AMP
IC800
POWER AMP
IC550
OVER CURRENT
PROTECTOR
: FM
MUTING
Q604, 606, 610
F-R
DBFB F/B
F-L
SW OUT
LINE-MUTE
78 70
STK-MUTE
52
THERMAL VACS
PROT
STK-MUTE
14
14
11
4
3
12
STK MUTE
FAN DET
FAN-CTL
FAN-ON
FAN-K
OVER LOAD
DETECT
Q668, 618
+ +
+
+
MUTING
Q640, 641
MUTING
CONTROL
Q634,682
F-RELAY
HP-DET
HP-MUTE
FAN-K
100
HD DETT
75
HP-MUTE
77
LINE/SURR-RLY
61
UNDER VOLTAGE DET
76
FR-RELAY
36
FAN KICK-OFF
OVER LOAD
DETECT
Q800, 850
RELAY DRIVE
Q644, 647
H/P DET
F-RELAY
HP-MUTE
+
-
-
+
FRONT SPEAKER
SUB WOOFER
OUT
L
R
PHONES
J1103
RY646
SYSTEM CONTROLLER
IC401 (4/5)
TM600
+
-
-
+
SURR SPEAKER
L
R
TM601
MAIN
SECTION
(Page 29)
H
MAIN
SECTION
(Page 29)
M
FAN MOTOR
DRIVE
Q580,581,584
DC FAN
M891
VL(AC)
TH629
TH630
THERMAL
DETECT
Q628, 630
THERMAL
DETECT
Q629
SW MUTE
Q812
MUTE
Q810
Q583
+
68
SW RY/IO-EXP CLK
RY862
E2, E3, E51
TM101
RELAY DRIVE
Q814, 815
G
DISPLAY
SECTION
(Page 31)
J
DISPLAY
SECTION
(Page 31)
I
6
4
OVER
LOAD
DC DET
VP
OCP
CT
OUT
D624
D812
D550
2
1
PROTECT
SWITCH
Q666
Q648
PROTECT
SWITCH
Q385
18 11
10
9
14
8
-
Q506
7
5
• SIGNAL PATH