Oki B 6100, Technical Manual

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13-44 OKI B6100 Laser Printer - Base Engine Technical Manual
Version 1.0
Principles of Operation
MCU and Control Panel Functions
The MCU performs nine main functions.
1. Communicates with the Printer Controller.
2. Controls the print sequence.
3. Controls the Fuser Assy, ROS Assy, and Drive components.
4. Distributes low DC voltages to various printer components.
5. Monitors printer status, such as the Fan Alarm.
6. Maintains a running print count.
7. Writes the NVRAM settings.
8. Controls printer optional devices.
9. Interfaces with the outer computer to be used the diagnostic analysis.
The MCU uses a 32 bit microcomputer and ASICs (Application Specific Integrated Circuits). The 32 bit
microcomputer includes ROM, RAM, a 16 bit integrated timer, a programmable timing pattern controller, a
watch dog timer, serial communication interfaces, an A/D converter, a D/A converter, I/O ports, a DMA con-
troller, and a refresh controller.