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CHAPTER 2
drive circuit switch the fun motor rotation speed between full and half speed.
The CPU assesses a fan motor failure and reports it to the video controller, if the FAN LOCK
DETECTION signals (/FAN1S, /FAN2S, /FAN3S, /FAN4S, /FAN5S) stay "L" for about 1.5 sec-
onds or more for 3 times at 5 seconds intervals while the fan motors are ON.
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Table of Contents
Troubleshooting
