Samsung R710 Service Manual page 154

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4. Troubleshooting
17. The Fan does not work normally
→ Check if the Thermal is locked tightly.
→ Check if the Fan cable is properly connected
FAN Control Table
*Note: Voltage of FAN is just for reference. It depend on the set, not fixed.
◆ When booting up the computer
18. The "Invalid System Disk. Replace the Disk and then press any key" message appears.
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