Yamaha DVD-S2300MK2 Service Manual page 63

A B C
SCHEMATIC DIAGRAM (AUDIO)
1
Q Q
7
3
2
2.5
2.5
6 1 2 7
2.6
AUDIO DAC
5.0 0
0 2.5
0 5.0
0 5.0
0 5.0
2.5 3.3
2.5 3.3
2.5
3
2.5
0 0
2.4 2.4
2.4 2.4
2.4 3.1
5.0
2.4
Page 50
G1
to MAIN (1)
5.0 0
0 2.5
Page 48
0 5.0
0 5.0
M7
0 5.0
2.5 3.3
to SACD
2.5 3.3
2.5
2.5
0 0
2.4 2.4
4
2.4 2.4
2.4 3.1
5.0
2.4
5.0 0
0 2.5
0 5.0
0 5.0
0 5.0
2.5 3.3
2.5 3.3
2.5
2.5
0 0
2.4 2.4
2.4 2.4
2.4 3.1
5.1
5
2.4
5.0 0
0 2.5
0 5.0
0 5.0
0 5.0
2.5 3.3
T E
L 1 3 9 4
2.5 3.3
2.5
2.5
0 0
0.8 0.8
2.4 2.2
2.4 3.1
5.0
2.4
6
5.1
7
0
0
8
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to MAIN (1)
5.9
0
9.4
3.9
9
w w w
Page 51 A8
to MAIN (1)
.
10
AUDIO (2)
AUDIO (1)
D E F
1 5 1
6 3
I-V CONVERTER
DIFFERENTIAL AMP
8.2
2.4 6
8
7
2.4 5 -0.9
2
5.0 307
-0.1 1
3
8 0.1
3 -0.2 8
0 8.2
4
0 2.4 3
1
2.4 2 -0.7
4
-8.1
8.2
8
2.4 6
7
2.4 5 -0.7
-8.1
5 4
308 -0.2 7
6 0.1
-0.2
2.4 2
1
2.4 3
-0.7
4
-8.1
8.2
8
2.4 6
7
2.4 -0.9
5
6
309
-0.2 7
5 -0.1
-0.2 8
8.2
2.4 2
1
2.4 3 -0.7
4
-8.1
8.2
2.4 6 8
7
2.4 -0.7
5
-8.1
3
4
-0.2 1
2 0.1
-0.2
2.4
2
1
2.4 3 -0.9
4
-8.1
8.2
2.4 6 8
7
5 -0.9
2.4
6
-0.1 7
5 -0.1
-0.1 8
8.2
2.4 2
1
2.4 3
-0.7
4
-8.1
2 2 9 6 5 1 3
317
8.2
2.4 6 8
7
-0.7
2.4 5
-8.1
3
4
-0.2 1
2 0.1
-0.2
2.4 2
1
2.4 3 -0.7
4
-8.1
8.2
0.8 8
6
7
6.5
5
2.4
6
-1.7 7
5 -4.3
-1.7 8
8.2
2.5 2
-6.9
2.4 3 1
4
-8.1
318
8.2
2.2 6 8
7
-6.9
2.4 5
-8.1
3 4
-1.7 1
2 -4.3
-1.7
0.8 2
1
2.4 3 6.6
4
-8.1
5.9 0
5.9 9.0
5.9
9.0
5.9 9.0
5.9
9.0
2.9 9.0
2.9
3.9
8.2
9.4 5.9
0.8
0 0 0 0 0
-9.1 -8.1
-8.1
REGULATOR
TRACKING
REGULATOR
-11.3 -9.1
0
x a o
y
i
8.4
-9.1 8.2
Page 51 A8
to MAIN (1)
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5
0 8
LPF AMP
MUTE CIRCUIT
2
0 1
3 0
0 8
8.1
5.1
5.1
0
0
-8.1
5 4
0 7
6
0
0
2
0 1
3 0
8
0
8.1
5.1
5.1
0
0
-8.1
5 4
0 7
6 0
0
2
0 1
3 0
8
0
8.1
5.1
Q Q
3 7 6 3
5.1
0
0
-8.1
0 5 4
7
0
6 0
2
0 1
3 0
0 8
8.1
5.1
5.1
0
0
-8.1
6 4
0
7
0 5 0
0
-0.1 -0.1
-0.2
0
3.3
0 SW GAIN
0
CONTROL
MUTE DRIVER
3.3 2.6
3.1
3.1 2.6 2.6
2.6 2.6 -8.0
3.1
3.1
3.2 3.1
POWER ON
MUTE DRIVER
3.1
9.1
9.1
3.1
7.9
5.1 3.1
7.9
0 0 7.9 2.2
0
1.5
0
RESET
SIGNAL
GENERATOR
u 1 6 3
.
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I J K
BUFFER
2 4
9 9
8.1
6 8
0 7
Page 51 A5
5 0
0
to MAIN (1)
3
1
0
2 0
0 4
-8.1
POWER ON MUTE CIRCUIT
5.1
0
-8.0
1.5 0.1
0
0
0
-8.0
0
5.1
0
-8.0
0.8 0.1
0
0
0
-8.0
0
5.0
0
-8.0
0.8 0.1
0
0
1 5 1 5 0 8 9 2
0
-8.0
0
5.0
0
-8.0
0.8 0.1
0
0
0
-8.0
0
8.2
6 8
0 7
5 0
24K
0
BUFFER
3
0 1
2 0 0
24K
0 4
-8.1
BASS MNG CIRCUIT
1K 12K
8.2
6
8
12K 0 7 2
5 0 0 1
0 3 0.1
4
0
-8.1
m
0
-8.0
0
c o
1.9
0
0
L M N
DVD-S2300MK2
2
8 9 9
IC301: M5290FP
Constant-Voltage Tracking Supply with Reset
OUTPUT
VCC E– C+ NC (+5V) DELAY
16 15 14 13 12 7
REFERENCE
11
IN
8 RESET OUT
REFERENCE
CURRENT
PROTECTION
REGULATOR
CONTROL
GND 9
ON/OFF
ON/OFF
10 CONTROL
+
BAL. ADJ.
6
CURRENT CURRENT
CONTROL CONTROL
1 3 2 4 5
–VCC E– C– NC OUTPUT
(–5V)
IC302~305 : AD1955ARS
DAC
IC307~318, 320~323: OPA2134UA/2K5
IC306: TC7WU04F
Triple Inverter Dual OP-Amp.
1A 1 8 VCC
OUT1 1 8 VDD
3Y 2 7 1Y
IN-1 2 7 OUT2
+ – + –
2A 3 6 3A IN+1 3 6 IN-2
GND 4 5 2Y VSS 4 5 IN+2
IC325~327: NJM5532M IC332: M51951BHP
Dual OP-Amp. System Reset
V CC
1
A OUT 1 8 V+
A-IN 2 7 B OUT
R
A+IN 3 6 B-IN 2 OUTPUT
–
–
V- 4 5 B+IN +
R
1.25V
4 9 8 2 9 9
3
GND
IC650: MD3221N
Voltage Regulator
IC651: PQ09RD11 IC652: NJM7909FA
Regulator Voltage Regulator
COMMON
Vin 1 2 Vo
4 Vc
3
OUTPUT
GND
INPUT
# All voltages are measured with a 10MΩ/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.
49