Specifications

REV.-A
2.3 OPERATING PRINCIPLES OF CONTROL CIRCUITRY
This section describes the operating principles of the control circuitry of this printer - C076 MAIN
board.
2.3.1 Control Circuitry Overview
The C076 MAIN board is provided with wPD70325 (V25 +) (9.5 MHz) – a 16-bit one-chip micro-
processor,
E05A65 - a gate array with memory management function, and E05A48 – a gate array
to control DC motors. Figure 2-38 shows the control circuitry block diagram.
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– – - – –
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1
—--—-——7
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{ Control ~ Case Open ~
, Panel ~
j Sensor
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l–- ---
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--------
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C076 MAIN Board
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–---------–- --–--–----–- ---------
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;D
Parallel
l/F
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1“
1
~ Option ~
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, l/F
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n
EEPROM
IC2
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1
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r
GA
E05A65
IC12
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L
uPD1 6322 SOH03
IC8,9 IC16
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1
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3
PU1501
IC18
t
STK
6712B
Icll
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SLA4391
IC17
El
Battery
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3
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Reset
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Circuit
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.__- —-_- — —---—-—-—
l --------- -------
— - _ --- _--—---— -— —--- —- —— --
Figure 2-38. Control Circuitry Block Diagram
2-29