Block Diagram - Amp Section - Sony HCD-VM330AV Service Manual

Q Q
3 7 6 3 1 5 1 5 0
7-5. BLOCK DIAGRAM – AMP Section –
FRONT
L-CH
L
(Page 24)
SWITCH
D395, 399
D389
REAR
L-CH
M
(Page 24)
T E
L 1 3 9 4 2 2 9 6 5 1 3
CENTER
N
(Page 24)
47 48
w w w
.
DBFB AMP
IC303
POWER AMP
IC501
R-CH
MUTING MUTING
DBFB DBFB LEVEL
Q517, 518 Q501
CONTROL
Q141 Q142
MUTING MUTING
R-CH
CONTROL CONTROL
Q522 Q502, 516
R-CH
STK MUTE
Q524
STK MUTE
REAR OUTPUT
SELECT SWITCH
IC307
11 10
8 9
R-CH
6 12
MUTING
POWER AMP
Q602, 603
IC602
R-CH R-CH
MUTING
R-MUTE
CONTROL
Q341, 342
MUTING
Q601
MUTING
C-MUTE
CONTROL
Q343, 344
35 34 65 44 23 21
x a o
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i
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8
OVER LOAD
DETECT
Q506, 507
D501
AU +9V
DC DETECT
+
Q513, 515
POWER ON PROTECT
MUTING DETECT
Q521 Q514
PROTECTOR
Q505, 508
D513
Q Q
3 7 6 3
OVER LOAD
DETECT
Q604, 605
OVER LOAD
DETECT
Q606
SYSTEM CONTROLLER
IC801 (4/5)
u 1 6 3
.
25 25
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2 4
9 9 8
+
+ + +
RY501
MUTING RELAY DRIVE
Q519, 520 Q504, 510
MUTING
CONTROL
+
Q523
+
+ + +
1 5 1 5 0 8 9 2 4
RY502
RY503
RELAY DRIVE
Q503, 509
40 55 45
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
m
: TUNER
c o
HCD-VM330AV
2
9 9
J503
PHONE
J501 (1/2)
+
L
–
FRONT SPEAKER
+
R
–
M391
(FAN)
FAN MOTOR
+
M
DRIVE
Q391, 392
D503
J501 (2/2)
+
L
+
–
REAR
9 8 2 9 9
+
R
–
SURROUND
SPEAKER
+
CENTER
–
J502