LG GR-K20SVZ Technical Manual page 25

MICOM Function and Description of Circuit
7) Stepping Motor Operation Circuit (3-way Valve)
➲ The rotation of the 3-way valve is controlled by the output of pins 40~43 of IC1.
Changes in these outputs rotate the valve.
Explanation) The stepping motor is driven by lC8. Signals are transmitted via lC8 as the motor
driving IC. The motor coil wound on each phase of the stator forms the rotation
magnetic field and causes the stepping rotation.
LED MODULE TYPE
GR-K16SLQ, GR-K18SLQ
LCD TYPE
GR-K20SVZ
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