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M2500 OVERALL CIRCUIT DIAGRAM (IN4, INPAN, METER, CTRL 1/5, 2/5, 3/5, 4/5, 5/5)
M2500
1
INPAN
CTRL 4/5 CTRL 5/5
PhotoCoupler
2
[P.4 - B5]
2
INVERTER
3
METER
3
[P.4 - B6]
[P.11 - I9]
CTRL 2/5
4
MULTIPLEXER
CTRL 3/5
4
DRIVER
DRIVER OP AMP
5
BUFFER
5
[P.11 - E6] [P.4 - I5,6]
METER1 install not install not install
METER2-1/2 not install install install
METER2-2/2 not install install install
6
other
6
OP AMP D-FF
CTRL 1/5
EPROM 512K
[P.4 - I11]
SRAM 256K
7
7
[P.4 - B2] [P.4 - B3]
NEXT P.C.B. (F8) NEXT P.C.B. (E8) [P.11 - M3] [P.11 - H9]
NAND
8
IN4
INVERTER
OP AMP
OP AMP
[P.4 - I2]
DSP3 OR
8
CPU
INTER FACE
[P.4 - B2]
INTER FACE
NAND INVERTER
GATE ARRAY INVERTER
9
SYSTEM RESET
[P.4 - B3]
9
OR
OP AMP
OP AMP
OR
DAC INVERTER
10
BUFFER D-FF OP AMP
[P.4 - I7]
[P.4 - B7]
10
INTER FACE
NEXT P.C.B. (G11)
INTER FACE OP AMP
[P.11 - K8]
D-FF DECODER
[P.11 - M6]
NEXT P.C.B. (A11) [P.11 - K6]
11
[P.11 - N6]
[P.9 - N7]
[P.9 - J8]
BUFFER
11
[P.11 - M7]
[P.11 - M7]
12
M2500
M2500
12
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