D
R552 2.2
R553 2.2
TO
MAIN (CONTROL)
CIRCUIT(CN300)
ON SCHEMATIC
DIAGRAM-21
IC500
RSN311W64A-P
POWER AMP(HIGH,MID,LOW)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
18
19
20
21
22
23
24
25
26
16
17
SCHEMATIC DIAGRAM-22
12
2
1
3
4
5
6
7
8
9
A
B
C
D
E
F
Q505
KTC3199GRTA
OVER LOAD DET.
Q503
Q505
-VP
+B(6)
+B(2)
+B(1)
GND1
-B(1)
+B(4)
D.GND
A
B
E
D
C
A
TO
MAIN (CONTROL)
CIRCUIT(CN301)
ON SCHEMATIC
DIAGRAM-21
CP500
C521 0.01
D501
1D3E
R537 56K
C510 470P
C500 470P
C514 470P
C508 470P
R536 56K
C530 22P
R556 220K
C539 0.047
R546 470K
R532 56K
C51
1 470P
C503 470P
R506 2.7K
R501 4.7K
R502
4.7K
R505 2.7K
C526 15P
R555 120K
R560 120K
C527 15P
R533 56K
R534 56K
C528 15P
R557 120K
R535 56K
C529 15P
R558 150K
R559 180K
C531 22P
D519
RK306LFU1
D517
RK306LFU1
R520
2.7K
R513
4.7K
R516
2.7K
R509
2.7K
R507
4.7K
R512
2.7K
10
11
C548
50V3.3
R517
4.7K
R568
22K
R508
4.7K
R561
10K
C547
16V10
P.GND
+B(5)
LED9V
12
2
1
3
4
5
6
7
8
9
H.Lch IN
/CD
+B(3)
10
11
GND1
H.Rch IN
LOW CH
GND1
C CH
DC DET
P.CONT
HP SW
B
CP501
D502
RL1N4003S-P
D503
RL1N4003S-P
E
C
Q510
2SD2144STA
SWITCHING
R554
1K
C513 0.01
B
A
C509
0.01
R504
1.5K
C502
0.1
C551
50V3.3
R503
1.5K
C501
0.1
S CH
R562
8.2K
C554
10V470
Q503
2SC2785FTA
OVER LOAD DET.
7.7V
-7.9V
3.3V
5V
-31V
10.4V
0V
0V
60V
-60.7V
0V
29.1V
-29.7V
0V
0.2V
0V
0V
-0.2V
29.5V
-30V
0V
0V
60.2V
-28.5V
0V
0V
0V
0V
5V
0V
0V
5V
0.2V
0V
:NEGATIVE VOLTAGE LINE
:POSITIVE VOLTAGE LINE
:SURROUND SP. DRIVE SIGNAL LINE
:CENTER SP. DRIVE SIGNAL LINE
14.8V
8.6V
:CD-DA/V-CD (AUDIO) SIGNAL LINE