![background image](http://html.mh-extra.com/html/sony/hcd-gsx75-system-components/hcd-gsx75-system-components_service-manual_420742026.webp)
HCD-GSX75
26
26
– AMP Section –
POWER AMP
IC601
• Signal Path
: FM
• R-ch is omitted due to same as L-ch.
MUTING
Q517, 518
MUTING
CONTROL
Q551
MUTE
SWITCH
Q353
R-CH
DBFB
FRONT
L-CH
68
67
STK-MUTE
A-MUTE
70
PROTECT
A-MUTE
STK-MUTE
14
18
11
10
8
9
12
A-MUTE
STKMUTE
Q553
+VL
PROTECT
DETECT
Q561,558
+
D557
AC
DET.
OVER LOAD
DETECT
Q152, 252
+
+
+
MUTING
Q153, 253
RELAY
DRIVE
Q562
MUTING
CONTROL
Q552
H/P CHK
F-RELAY
76
F-RELAY
69
H/P-CHK
DC DETECT
Q556, 557
H/P CHK
+
–
+
–
SPEAKER
L
R
PHONES
J882
RY501
Q560
F-RELAY
AC
DET.
SYSTEM CONTROLLER
IC801 (4/5)
J357
F
INPUT/EVR
SECTION
(Page 25)
INPUT/EVR
SECTION
(Page 25)
M
FAN MOTOR
DRIVE
Q351,352
(FAN MOTOR)
M351
TH501
-VH
IN/CH1
+RE/CH2
-RE/CH2
+RE/CH1
-RE/CH1
IN/CH2
-PRE
Q511
THERMAL
DETECT
G
SWITCH
Q354,355