Altos 12000 Series User’s GuideTurning Off the System PowerTo power off the system, press the power switch on the front panel for 4 seconds.You must press the power switch for about 4seconds to turn off the system. This featureprevents accidental system shutdown duringPower On Self Test (POST).1.5 Installing Optional ComponentsBefore you install any system component, please read the following sections.These sections contain important ESD precautions, pre- and post-installationinstructions.Turn off the system power and unplug thepower cord and all peripherals beforeopening the system or connecting orremoving any peripheral device. Always turnon any external peripheral device before youturn on the system.To avoid damaging the system, do not openthe housing for service or upgrades unlessyou are a qualified technician.When you power off the system, the RDMmodule still receives standby electric currentso that it can check the system's status. Besure to unplug the power cord before youremove or reinstall the RDM module. Referto the RDM User’s Guide.
