Yamaha MDX-E100, Руководство по обслуживанию

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A B C D E F G H
1
2
3
4
5
6
I J K
7
8
MDX-E100
* All voltages are measured with a 10M
Ω
/DC electric volt meter.
* Components having special characteristics are marked Z and must be
replaced with parts having specifications equal to those originally installed.
* Schematic diagram is subject to change without notice.
Point
r
(Pin 13 of IC703)
V : 2V/div H : 50 nsec/div
DC range 1 : 1 probe
0V
■
SCHEMATIC DIAGRAM (DIGITAL)
IC706 : TC74VHC04F
Hex Inverters IC701 : NJM2904M-T1
Dual OP-Amp
– +
OUT 1
–IN 1
–V CC
+V CC
OUT 2
1
2
3
4 5
+IN 1 –IN 2
+IN 2
– +
6
7
8
1A
1Y
2Y
V
DD
6A
1
2
3
4 11
2A 6Y
5A
12
13
14
3A
3Y
5Y
4A
5
6
7 V
SS
4Y 8
9
10
IC702 : HD74HC02FPEL
Quad 2 Input NOR
1 2 3 4 5 6 7
Y1 A1 B1 Y2 A2 B2
GND
14 13 12 11 10 9 8
VCC Y4 B4 A4 Y3 B3 A3
E-50/J-48
P-E49/J47
[A-3]
V301 : 15-BT-53GN
*2 $2
PATTERN AREA
q $1
Note 1) F1, F2 ........ Filament
2) NP .............. No Pin
3) NX .............. No extend Pin
4) P1~P35 ...... Datum Line
5) 1G~15G ..... Grid
●
PIN CONNECTION
●
GRID ASSIGMENT
●
ANODE CONNECTION
DEQ
DIT
DIR
4.9
0
0
0 0
0
4.9
0
2.4
4.9
0
0
4.7
0
4.9
4.9
4.7
0
4.9 0
0.1
0
4.9
0
4.9
4.9
4.9
0 0 0
0
0
2.4
2.4
2.4
2.4
2.6
0
0
0
2.6
2.6
2.6
0
0
0
2.6
2.6
0
3.2
4.9
3.2
2.6
0
0
0
0
4.9
4.9
4.9
0
0
4.9
4.9
0
4.9
2.4
2.3
0
2.4
0
4.7
2.4
0
0
4.9
4.9
0
4.9
0
0
0 0
0
0 0
2.1 2.1
4.9 5.0
4.9
0
0
0
0
0
2.2
0.1
4.9
0
0
0.1
4.9
4.9
0
0
0 0
0
0
r