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Mitac 8080 Service Manual - laptop schematics, notebook ...

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1.2.6 Fan Power On/Off Management<br />

<strong>8080</strong> N/B Maintenance<br />

FAN is controlled by H8 embedded controller using ADM1021A to sense CPU temperature and PWM control fan<br />

speed. Fan speed is depended on CPU temperature. Higher CPU temperature faster Fan Speed.<br />

1.2.7 CMOS Battery<br />

CR2032 3V 220mAh lithium battery.<br />

When AC in or system main battery inside, CMOS battery will consume no power. AC or main battery not exist,<br />

CMOS battery life at less (220mAh/5.8uA) 4 years. Battery was put in battery holder, can be replaced.<br />

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