Transmit Motor Control Circuit - Panasonic Panafax UF-885 Service Manual

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Panasonic UF-885 / 895

Transmit Motor Control Circuit

The transmit motor is a stepper motor powered by +24 VDC and driven by a 1/2-phase excitation, greater step division is provided

by controlling the phase circuit in steps.

The stepping signal and chopping current control signals (pTINA, pTTDA, pTINB and pTTDB) are sent to the chopper drive circuit,

comprised of IC190 and its peripheral circuitry, from the IC150 (S-CPU) output port.

Tx Motor Driver Circuit Block Diagram

Motor Control Signal

(pTINA, pTTDA, pTINB and pTTDB)

Transmit Motor

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Panafax uf-895