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B. Outline of Electric Circuitry
1.
.
.
.
.
.
.
2.
.
3.
The NP6020's
main mechanisms
are
controlled
by the microprocessor,
PROM,
and EEPROM on the DC controller PCB.
Microprocessor
(Q303: master)
controls the copying sequence
controls the control panel
controls the main motor/scanner
motor
controls the scanning lamp
controls
the serial communication
with
the ADF
reads analog signals
PROM ((2318)
contains seauence oroorams
EEPROM (d315)
'
"
stores data that can be modified in the
service
mode (replaces
conventional
variable resistors and switches)
-3.
OPERATIONS AND TIMING
-.
Microprocessor
((2305: slave)
controls
the document
size identifica-
tion
controls
the serial communication
with
the sorter
controls the fans and the oil application
solenoid
controls the paper deck pedestal
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