Canon FAX-L1000 - Manual (Page 216)

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FAX-L1000 Chapter 3: Technical Reference
a) Printer control section (ECNT board)
The printer control section consists of the following components and controls the LBP
printer.
a-1) Single chip microcomputer (IC 501)
The single chip microcomputer has the following main functions.
•8-bit CPU
•24k-byte ROM
•512k-byte RAM
•Fixing heater control
•Thermistor detection
•Sensor detection
•Main motor control
•Toner cartridge, transfer charging roller high voltage control
•Fan control
•Paper pickup solenoid, and paper feed solenoid control
•SCNT board interface
•Scanner motor control
•Beam detection signal (nBD) detection
•Laser diode control