Block Diagram - Amp Section - Sony HCD-GTX66 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
6-5. BLOCK DIAGRAM — AMP SECTION —
POWER AMP
IC601
MAIN
F
F-L 18 11
SECTION
10
(Page 33)
F-R 14 8
9
12
MUTING
Q604, 606, 610
T E
L 1 3 9 4 2 2 9 6 5 1 3
67
w w w
HCD-GTX66/GTX77
MAIN
I DBFB F/B
SECTION
(Page 33)
D624
+ +
OVER LOAD
MUTE
DETECT
Q640, 641
Q668, 618
MUTE
THERMAL
CONTROL
DETECT
Q634,682,684
Q628, 630
TH629
OVERLOAD
DETECT
SWITCH
OVER CURRENT
PROTECTOR
IC550
D550
1
OCP CT 4
3
OUT
2
VP
DISPLAY
K
/POWER VL(AC)
SECTION
(Page 36)
TH630
94
x a o
y
. i
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RY646
+
RELAY DRIVE
Q644, 647
Q648
FAN DETECT
Q580–582
FAN CONTROL
DISPLAY/
Q Q
J 3 7 SWITCH 6
POWER FAN CONTROL
Q584
SECTION
(Page 36)
HI SPEED
SWITCH
Q581
UNDER VOLTAGE
DETECT SWITCH
Q506
61 69 70 68 88
SYSTEM CONTROL
IC401 (5/6)
u 1 6 3
35 35
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2 4
8 9 9
+
L
-
+
R
-
• R-CH is omitted due to same as L-CH.
• SIGNAL PATH
: AUDIO
FAN MOTOR
3 1 DRIVE 5 1 M 5 M891 0 8 9 2
Q579, 585 DC FAN
100
m
c o
.
HCD-GTX66/GTX77
2
8 9 9
J1101
PHONES
TM600
FRONT SPEAKER
4 9 8 2 9 9