![background image](http://html.mh-extra.com/html/sony/hcd-gnx88/hcd-gnx88_service-manual_420699030.webp)
HCD-GNX88
30
30
HCD-GNX88
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
STK-MUTE
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
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
TM600
+
-
-
+
SURR SPEAKER
L
R
TM601
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
+
RY862
TM101
RELAY DRIVE
Q814, 815
D624
D812
D550
PROTECT
SWITCH
Q666
Q648
PROTECT
SWITCH
Q385
-
• SIGNAL PATH
Summary of Contents for HCD-GNX88
Page 81: ...81 HCD GNX88 MEMO ...