Operation Safety Guidelines
Warning!: For proper cooling, make sure to install all chas- sis covers before turning on the system. If this rule is not strictly followed, warranty may become void. Do not open the casing of a power supply. Power supplies can only be accessed and ser- viced by a qualified technician of the manufac- turer.
Warning!: To avoid personal injury and property damage, please carefully follow all the safety steps listed below:
Before accessing the chassis:
1.Turn off all peripheral devices connected to the DNS series.
2.Press the power button to power off the system.
3.Unplug all power cords from the system or the wall outlets.
4.Disconnect all the cables and label the cables for easy identifica- tion.
5.Use a grounded wrist strap designed to prevent static discharge when handling components.
Removing the chassis covers:
After completing the above steps, you can remove the covers and install components/peripheral devices into the chassis as described in Chapter 2.
1.Unlock and remove the screws and fasteners to remove the cover or components.
2.Save all the screws and fasteners for later use. (If necessary, label these screws or fasteners for easy identification.)
3.Follow the instructions given in Chapter 3 to remove the chassis covers.
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