Yamaha MCX-1000 Service Manual page 66

A B
MCX-1000
SCHEMATIC DIAGRAM (MAIN: SYSTEM Block)
1
VOLTAGE REGULATOR
2
3
4
VCC T/R
/CE A0 OPT_SEL
B0 A1 DIT_0
B1 A2
B2 A3
B3 A4
B4 A5
B5 A6
B6 A7
B7 GND
5
R334 DIT_0_5V
33
R336 OPT_SEL_5V
33
6
7
8
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.
9
66
C D E
DSP1
3
ACDR3
2
Point 2 Pin 51 of IC301 Point 3 Pin 68 of IC301
F G
FPGA
IC302~303, 307~310: FST3383MTC IC305: EP1K30TC144-3
FPGA
10-Bit Low Power Bus-Exchange Switch
I/O Element
IOE IOE
A0 C0 (IOE)
BE 1 24 Vcc
IOE
C0 2 23 D4
A0 3 22 B4
IOE
B0 4 21 A4
B0 D0 Column
D0 5 20 C4
Interconnect
C1 6 19 D3
A1 7 18 B3
IOE
A4 C4 B1 8 17 A3
D1 9 16 C3 IOE
C2 10 15 D2
Row
Interconnect
A2 11 14 B2
GND 12 13 BX
B4 D4
Logic
Array
IOE IOE
BX
BE
H I J
DSP0
IC313: PQ070XZ5MZP
Embedded Array Block (EAB) Regulator
IOE IOE IOE IOE IOE IOE IOE IOE
Vin 1 3 Vo
IOE
Vc 2 4 Vadj
IOE
5
Logic Array GND
EAB
Logic Array
Block (LAB)
IOE
IC314: PQ025EZ5MZP
Regulator
IOE
Logic Element (LE)
EAB Vin 1 3 Vo
Local Interconnect
2 Vc
5
GND
IOE IOE IOE IOE IOE IOE IOE IOE
Embedded Array
K L