Yamaha DVD-S2300MK2, Руководство по обслуживанию, Страница: 63 / 63

A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
DVD-S2300MK2
SCHEMATIC DIAGRAM (AUDIO)
49
★
All voltages are measured with a 10M
Ω
/V DC electronic volt meter.
★
Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
IC332: M51951BHP
System Reset
IC302~305 : AD1955ARS
DAC
+
–
–
1
V
CC
2 OUTPUT
3
GND
R
R
1.25V
VCC E– C+ NC
OUTPUT
(+5V) DELAY
RESET OUT
BAL. ADJ.
GND
ON/OFF
E– C– NC –VCC
DELA
Y
CIRCUIT
REFERENCE
REGULATOR
PROTECTION
ON/OFF
CONTROL
REFERENCE
IN +
+
CURRENT
CONTROL CURRENT
CONTROL
16 15 12 7
9
10
3 2 4
6
11
8
1
14 13
5
OUTPUT
(–5V)
CURRENT
CONTROL
IC301: M5290FP
Constant-Voltage Tracking Supply with Reset
IC650: MD3221N
Voltage Regulator
IC652: NJM7909FA
Voltage Regulator
COMMON
OUTPUT
INPUT
Page 51
to MAIN (1)
A5
Page 50
to MAIN (1)
G1
Page 48
to SACD
M7
AUDIO (2)
Page 51
to MAIN (1)
F3
Page 51
to MAIN (1)
A8
IC306: TC7WU04F
Triple Inverter
1A
3Y
GND
VCC
1Y
1
2
3
4 5
2A 3A
2Y
6
7
8
IC307~318, 320~323: OPA2134UA/2K5
Dual OP-Amp.
– +
1
2
3
4 5
– +
6
7
8 OUT1
IN-1
IN+1
VSS
VDD
OUT2
IN-2
IN+2
IC325~327: NJM5532M
Dual OP-Amp.
1
2
3
4 5
6
7
8 A OUT
A-IN
A+IN
V-
V+
B OUT
B-IN
B+IN
IC651: PQ09RD11
Regulator
1 Vin 2 Vo
4 Vc
3
GND
AUDIO (1)
Page 51
to MAIN (1)
A8
AUDIO DAC
I-V CONVERTER
DIFFERENTIAL AMP
LPF AMP
MUTE CIRCUIT
POWER ON MUTE CIRCUIT
BUFFER
BASS MNG CIRCUIT
BUFFER
6 1 2 7
8
307
7
8
3
2
1
4
308
309
4
3
6
5
7
8
2
3
1
4
6
5
7
8
2
3
1
4
5
7
8
2
3
1
4
5
7
8
2
3
1
4
6
5
7
8
2
3
1
4
6
5
7
8
2
3 1
4
6
5
7
2
3
1
4
6
5
8
6
5
7
8
6
6
2
1
8
3
5
7
4
6
6
7
8
5
3
1
4
2
6
7
8
317
318
5
3
1
4
2
3
2
1
4
1
2
3
8
5 4
7
6
1
2
3
8
5
4
7
6
1
2
3
8
5 4
7
6
2
3
1
8
6
5
7
4
5
3
2
1
4
6
7
8
5
6
2
4
3
1
0
7
8
5
4
6
3
1
2 8 7
REGULATOR
TRACKING
REGULATOR
RESET
SIGNAL
GENERATOR
POWER ON
MUTE DRIVER
MUTE DRIVER
SW GAIN
CONTROL
24K
24K
12K
12K 1K
47
47/50
47/50
47/50
47/50
5600P/100
5600P/100
2.5
2.6
5.0
2.5
2.5
2.5
2.5
2.4
2.4
2.4
2.4
5.0
2.4
2.4
3.1
0
0
0
0
3.3
3.3
2.5
5.0
5.0
5.0
0 0
0
2.5
5.0
0
0
5.0
2.5
2.5
2.5
2.5
2.4
2.4
2.4
2.4
5.0
2.4
2.4
3.1
0
0
0
0
3.3
3.3
2.5
5.0
5.0
5.0
0 0
0
5.0
2.5
2.5
2.5
2.5
2.4
2.4
2.4
2.4
5.1
2.4
2.4
3.1
0
0
0
0
3.3
3.3
2.5
5.0
5.0
5.0
0 0
0
5.0
2.5
2.5
2.5
2.5
0.8
2.4
2.4
2.4
5.0
0.8
2.2
3.1
0
0
0
0
3.3
3.3
2.5
5.0
5.0
5.0
0 0
0
5.1
0
0
-0.9
-0.7
-8.1
2.4
2.4
2.4
2.4
8.2
-0.7
-0.7
-8.1
2.4
2.4
2.4
2.4
8.2
-0.9
-0.7
-8.1
2.4
2.4
2.4
2.4
8.2
-0.7
-0.9
-8.1
2.4
2.4
2.4
8.2
-0.9
-0.7
-8.1
2.4
2.4
2.4
2.4
8.2
-0.7
-0.7
-8.1
2.4
2.4
2.4
2.4
8.2
6.5
-6.9
-8.1
0.8
2.4
2.5
2.4
8.2
-6.9
6.6
-8.1
2.2
2.4
0.8
2.4
8.2
-1.7
8.2
-1.7
-4.3
2.4
-0.1
0.1
8.2
-0.2
-0.2
0.1
-8.1
-0.2
-0.2
-0.1
8.2
-0.2
-0.2
0.1
-8.1
-0.2
-0.1
-0.1
8.2
-0.1
-0.2
0.1
-8.1
-0.2
-1.7
-1.7
-4.3
-8.1
0
0
8.1
0
0
-8.1
0
0
0
0
8.1
0
0
-8.1
0
0
0
0
0
8.1
0
-8.1
0
0
0
0
0
8.1
0
0
0
0
-0.2
3.3
0
-0.1 -0.1
0 0
-8.1
3.3
3.1
2.6
2.6
2.6
3.1
2.6
2.6
3.1
-8.0
3.1
3.1
3.1
3.1
3.1
7.9
7.9
9.1
9.1
1.5
2.2
5.1
0
0
0
0
3.2
5.1
5.1
0
0
5.1
5.1
0
0
5.1
5.1
0
0
5.1
5.1
0
0
0
0
-8.0
0
0
-8.0
0
0
-8.0
0
0
-8.0
0
0
-8.0
0
0
-8.0
0
0
-8.0
0
0
-8.0
8.1
-8.1
0
0
0
0
0
0
1.5
5.1
0
0.1
0.8
5.1
0.1
0.8
5.0
0
0
0.1
0.8
5.0
0
0.1
8.2
-8.1
0
0
0
0
0
0
-8.1
0
0
0
0
0
0
-8.0
8.2
0.1
0
1.9
0
0
0
5.9 9.0
9.0
9.0
9.0
9.0 2.9
3.9
9.4
5.9
0
0 0 0 0 0
2.9
3.9
8.2
5.9
5.9
5.9
5.9
9.4
0.8
5.9
0
10.9 10.9
9.1
0
-11.3
-9.1
0 0 0 9.1
8.4
8.4
8.2 1.2
0 0
-9.1 -8.1 -8.1
1.4 3.1
-9.1 -8.1
-8.1
-9.1 8.2
7.9
w w w . x i a o y u 1 6 3 . c o m
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