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CPU
12
11
10
9
8
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6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
PSR-640 CIRCUIT DIAGRAM (DM, MKS3, MKH, MKL, INV)
PSR-640
PSR-640
PSR-640
MKS3
MKH
DM
MKL
INV
to JACK-JK5
to PN1-CN8
to AM - CN320
to AM - CN310
L C D
Floppy Disk Drive
to PN1-CN2
to PN1-CN1
CPU
RESET
DECODER
SRAM 1M
PROGRAM1 ROM H 32M
PROGRAM2 ROM L32M
DRAM 16M
DECODER
DECODER
D-FF
DECODER
TRANSISTOR ARRAY
TRANSISTOR ARRAY
OR
AND
AND
D - FF
SRAM 256K
LCDC
INVERTER
INVERTER
DC-DC CONVERTER
FDC
REGULATOR +5V
DAC
ROM WAVE1 32M
ROM WAVE2 32M
SWX00B
REG3.3V
DRAM 4M
to Back - light Assembly
28CC1-8812655
28CC1-8811360
28CC1-8811360
28CC1-8813199
2NA-8814265
Note : See parts list for details of circuit board
component parts
: Ceramic Capacitor
: Mylar Capacitor
47
Содержание PortaTone PSR-640
Страница 4: ...4 PSR 740 PSR 640 ...
Страница 22: ...22 PSR 740 PSR 640 DM Circuit Board PSR 640 Component side Pattern side 2NA V350510 1 2 1 ...
Страница 27: ...27 PSR 740 PSR 640 ...
Страница 28: ...28 PSR 740 PSR 640 ...
Страница 32: ...32 PSR 740 PSR 640 ...
Страница 33: ...33 PSR 740 PSR 640 ...