Schematic Diagram - Yamaha MCX-A10 Service Manual
Musiccast digital audio terminal/speaker system
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Also See for MCX-A10:
- Manual (75 pages) ,
- Owner's manual (76 pages) ,
- Product catalog (44 pages)
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A
B
C
MCX-A10/MCX-SP10
SCHEMATIC DIAGRAM (D-AMP)
1
PUSH SELECT
5.0
1.7
2
0.1
JXS0000-1011
0.7
5.0
0
3.6
3.6
0
3.6
0
0
0
3
0.5
0.8
0
4
D-AMP
CORE (CB11)
5
Point t (Pin 2 of IC601)
6
IC707 : µPC4570G2
Dual OP-Amp
OUT
1
1
8
+V
CC
–IN
2
7
OUT
1
2
+
–
+
–
+IN
3
6
–IN
1
2
–V
CC
4
5
+IN
2
7
IC701 : 74VHCT245AMTCX
Octal Buffer/Line Driver with 3-State
Outputs
DIR
1
20 V
CC
A1
2
19 ENG
A2
3
18 B1
A3
4
17 B2
A4
5
16 B3
15 B4
A5
6
12.1
0
8
A6
7
14 B5
0.1
A7
8
13 B6
0.1
A8
9
12 B7
0.7
0
GND
10
11 B8
0.1
0
0
IC702 : YDA135-V 20W 2CH
Stereo 5W-20W Digital Audio Power Amplifier
Controller
CDIL
CDOL
41
42
45
NFPL
34
46
HP_L
9
NFINL
BALANCED
BUS TRANSCEIVER
47
33
INL
–
PULSE WIDTH
+
HN_L
MODULATION
UNIT
31
(L CH)
–
LP_L
+
2
VREFL
32
LN_L
44
NFNL
38
39
PVDDL
SENSEPL
36
OVER
37
PVSSL
SENSENL
OVERHEAT
CURRENT
22
48
DETECTION
DETECTION
SENSEPR
VDDL
POWER
24
SENSENR
3
SUPPLY
VSSL
VOLTAGE
8
13
DETECTION
TPP
VDDR
10
4
VSSR
MUTE
5
23
CONTROL
SLEEP
PVDDR
BLOCK
6
PORT
25
PVSSR
9
TEST
16
NFPR
10
11
27
VREFR
HP_R
BALANCED
+
28
PULSE WIDTH
HN_R
–
MODULATION
UNIT
30
+
(R CH)
LP_R
14
INR
–
29
LN_R
17
15
NFINR
NFNR
20
19
CDIR CDOR
42
D
E
F
4.8
4.9
0
D-AMP
0
3.3
2.6
0
3.2
IC501 : SN74AHC1G125DCKR
3-State Bus Buffer
OE
1
5
VCC
A
2
GND
3
4
Y
D-AMP
5.0
4.4
0
-4.9
3.9
8
0
0
0
3
1
0
2
6
0
7
0
5
0
0
-4.9
4
-3.3
-5.0
-4.7
0
0
-4.9
0
0
-4.9
0
0
-4.9
0
-4.7
-4.9
0
-4.9
-4.9
-4.9
-4.9
0
0
0
-4.9
-5.0
0.2
-5.0
0
5.0
5.0
0
0
REGULATOR
0
0
0
0
3.3
0
0
0
3.3
5.0
0
5.0
12.0
8.5
0
5.0
9.1
0
9.1
0
3.3
0
0
G
H
I
5
OSD
0
4.9
2.4
5.0
2.5
4.9
0
0
4.9
0.4
0.3
4.9
2.4
2.5
1.1
0.2
2.0
5.0
4.9
5.0
0.1
0
4.9
5.0
1.8
1.1
1.1
1.1
1.7
4.5
4.5
5.0
3.9
6.3
0.1
5.1
7.4
5.4
0.1
0.8
10.2
5.0
12.0
0
2.4
5.0
5.0
1.5
5.5
0
0
3.4
3.3
8.4
1.4
0.8
3.5
3.4
4.9
3.4
6.2
ELECTRICAL VOLUME
-4.9
5.1
5.2
12.2
5.1
5.1
5.2
0
5.0
0
5.1
5.2
0
5.0
5.0
0
0
5.0
0
0
5.0
2.5
2.5
2.5
2.5
0
2.5
2.5
0
2.5
11.7
1.3
1.3
0.7
3.3
0
5.0
0
2.5
-4.9
0
0.7
0
5.0
0
0
0
5.0
0
0
0
0.7
0
2.5
0
0
0.7
INPUT SELECTOR & TONE CONTROL
J
K
IC712 : YAC520-EE2
Hight-Grade Stereophonic Digital Volume
LIN2
12
LIN1
11
DVSS
4
DVDD
3
L
ZERO
CROSS
DETECTION
AVSS
5
R
AVDD
6
RIN1
15
RIN2
14
IC709 : LT1617-1
Regulator
VIN
/SHDN
5
NFB
3
D-AMP
D-AMP
12.0
12.0
0
12.0
-0.9
-5.0
-1.3
0
12.2
REGULATOR
0
0.1
0
0.1
12.1
0.1
12.1
0.1
0
0
0.1
0
0.1
12.1
12.1
0.1
0
0.1
0
12.1
12.1
12.1
0
0
0.1
0
0
0.1
12.1
12.1
0.1
12.1
0.1
0
0
0.1
0
0.1
0.1
12.1
0.1
12.1
DIGITAL AMP
L
M
N
IC713 : LC75342M-TLM
Input Selector & Electric Controlled Volume
4
3
2
1
30
29
28
27
VREF
LOUT
5
26
ROUT
+
–
–
+
+
–
–
+
+
–
LOUT
9
LBASS2
6
25
VREF
RBASS2
256
GENERATOR
&
VREF
8
–
+
+
–
RESET
PULSE
GENERATOR
LBASS1
7
24
RBASS1
17
ICN
16
TE
CONTROL
ZCEN
REGISTER
18
2
SDATAO
S/P
20
SDATAI
–
+
+
–
16
REGISTER
19
CSN
1
SCLK
LTRE
8
23
RTRE
256
LIN
9
22
RIN
7
ROUT
LSELO
10
21
RSELO
–
+
+
–
–
+
VREF
11
12
13
14
15
16
17
18
19
20
SW
IC703–706 : FW332
4
1
FET
D1
D1
D2
D2
8
7
6
5
+
A1
ENABLE
–
400ns
ONE-SHOT
DRIVER
+
A2
–
42mV
1
2
3
4
2
GND
S1
G1
S2
G2
0
0.8
0
12.1
12.1
5.4
12.1
12.1
12.1
5.4
5.4
5.4
6.7
6.7
5.4
0
EUOROPE
* All voltages are measured with a 10M Ω /V DC electronic volt meter.
* Components having special characteristics are marked Z and
D-AMP
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.
O
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