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3.2 Main PCB
The main PCB, which is the nucleus controlling the entire operation of the equipment, consists of a
FAX engine (ASIC), memories, motor drive circuitry, sensor detection circuitry, and analog circuits
for scanning, recording, and power transmission shifting.
*Provided on the FAX870MC/FAX-930/FAX-931/MFC970MC.
EEPROM:Electrically Erasable Programmable Read-only Memory
DRAM: Dynamic Random Access Memory
Block Diagram of Main PCB