Schematic Diagram - Yamaha MCX-1000 Service Manual

A B
SCHEMATIC DIAGRAM (OPERATION 1/3)
1
0
2
0.6
0
MUTING
0
0.7
0
3
4
IC709, 713: AK4528VF
24bit CODEC
5
AINL+
4
AINL- 5
ADC HPF
AINR+ 2
AINR- 3
Audio
I/F
VCOM 1
Controller
AOUTL+
26
AOUTL- 25
ADC HPF
AOUTR+ 28
AOUTR-
27
VREF 6
VA 8 Control Register I/F Clock Divider
AGND 7
9 17 16 15 10 18
P/S CSN CCLK CDTI MCLK DFS
(DIF) (CKS1) (CKS0)
3.8 3.8
6 9 8 0
0
5.0
&1
2.3
5.0
14 1.7
3
2.7 4
7
0
7
2.6
2.6 2 1 1.7
5.0
Mark Reference Parts Number
0
&1 U701
&2
&2 U702
IC601: µPC4570G2
IC705: SN74AHC08PWR
IC701, 712: NJM4580V-TE2 Quad 2-Input AND Gate
IC702, 703, 710, 711: NJM2100V
8
Dual OP-Amp
1A 1
1B 2
OUT 1 1 8 +V CC
1Y 3
–IN 2 OUT
1 7 2
2A 4
+ – + –
+IN 3 6 –IN 2B 5
1 2
2Y 6
–V CC 4 5 +IN 2
GND 7
9
C D E
0
2.9 3.0 3.0 0
3.0 3.0
3.0 3.2
-5.0 2.9
0
0.6
0 5.0
0
8
3
0 1 0
2
0
0.7
0
0
0 7 6
0
4
5
-5.0
CODEC0
2.5 4
0
2.5 8 5 2.5
5.0
3 2.5 2.5
7
2.5
1 6
2
2.5
2.5 2.5
2
2.5 1 6 2.5
5.0
3 8 2.5 7
0
4
5
VD
23
22 VT
24 DGND
19 PDN
11 LRCK
12 BICK
13 SDTO
14 SDTI
20 DEM0
21 DEM1
0 2 5.0
0
1
3
5.0
0 5 14
4
4.9
0 6
7
4.9
0
12
0 13
0 0
0
3.2 0.3
5 6 11 10
0
Parts Name
8P1FA512RZ
8P1FA513RZ
8P1FA512TZ
8P1FA513TZ
IC706: SN74AHC02PWR IC708: SN74AHCU04PWR
Quad 2 Input NOR Gates
Hex Inverters
1Y 1 14 VCC
1A 1 14 V
cc
14 Vcc
1A 2 13 4Y
1Y 2 13 6A
13 4B
1B 3 12 4B
12 4A
2A 3 12 6Y
2Y 4 11 A4
11 4Y
2Y 4 11 5A
10 3B 2A 5 10 3Y
3A 5 10 5Y
9 3A
2B 6 9 3B
8 3Y
3Y 6 9 4A
GND 7 8 3A
GND 7 8 4Y
F G
IC707: NJM2904V(TE1)
Dual OP-Amp
Q2 Q3
– Q1 Q4
INPUTS
+
Q8 Q9
5.0
0
8
3
2.2 1 0.1
0
2 4
8
0
0.1
9 10
5.0
0
3.8
5
0 12 0 7
0 5.0 6
11 13
OPERATION (6)
H I
Page 66 A3 to MAIN
Page 69 J4 to MAIN
OPERATION (4)
V–
Q6
Q5
Q7
OUTPUT
5.0
5
0
Q13 8 2.5
2.5 3
4
Q11
7 1 2.5
Q12
Q10 6 2
2.5
2.5
2.5
6
2 7
2.5
1
2.5 2.5 5
4
3 2.5
2.5
8
2.5
5.0
CODEC1
2.5 2.5
2.5 2.5
2.5 2.5
2.5
2.5
2.5 0
5.0 5.0
0
5.0
0
5.0
4.9
2.5
2.1 4.9
1.6 0
1.7 0
1.2
0
1.2
0
All voltages are measured with a 10MΩ/V DC electronic voltmeter.
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.
J K L
MCX-1000
PS2
5.0
4.3
4.3
8 0
0 3
0
1
2
HEADPHONE
AMP
0
6 0
7
0
4
5
-3.9
-5.0
-4.4
-5.5
4
7 5 0
0 6
0
3
1 0
2 0
0
8
5.0
71