Canon NP6317 Specifications Page 26

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CHAPTER 2 BASIC OPERATION
COPYRIGHT
©
1999 CANON INC. CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
2-2
B. Outline of Electric Circuitry
The NP-6317's main mechanisms are controlled by the microprocessor, PROM, and
EEPROM on the DC controller PCB.
1. Microprocessor (Q300)
controls the copying sequence
controls the control panel
controls the main motor/scanner motor/mirror motor
controls the scanning lamp/fuser lamp
reads the analog signals
2. PROM (Q301)
contains the sequence program
3. EEPROM (Q317)
stores data that can be modified in the service mode (replaces conventional variable resistors
and switches)
Note:
EEPROM is a type of ROM in which data may be erased or stored newly.
For this reason, the NP-6317's RAM and RAM are not backed up by a lithium battery.
Note:
The NP-6317 is equipped with an A/D converter and, therefore, its microprocessor can read
analog signals.
Note:
The main motor (M1) is a brushless motor.
The scanner motor (M2) and mirror motor (M3) are stepping motors which use the oscillation
frequency of the crystal oscillator on the DC controller.
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