User Guide111www.bull.comUsing the SystemThe following sections describe how to use this system properly and safely, includingan explanation of the system power on/off sequences, what the POST program checksin the system, and how to perform a forced power shutdown.When using the system the following precautions should be observed:■ Make sure you power off the system before connecting or disconnecting cablesbetween the system and peripheral devices. Connecting or disconnecting the cableswhile the system is powered on may cause malfunction or failures within thesystem. Note that this warning does not apply to hot-plug devices.■ Check that the removable media drive access lamp is unlit before turning off thesystem or ejecting the media. Doing so avoids damaging the data stored on themedia.■ When you turn off the system, wait at least 10 seconds before turning it on again.Cycling the power immediately may cause malfunctions or failures in the system.■ Power off the system and unplug the power cord before relocating the system.Moving the system while it is powered on may cause malfunctions or failures inthe system.■ Clean the system regularly. Regular cleaning prevents failures of the system and ofits components.■ Lightning may cause a momentary voltage drop. To prevent this problem, werecommend you install an uninterruptible power supply unit.■ Only use options qualified for the system. An option we did not qualify may beinstalled in or connected to the system, but it may fail to operate normally or evencause failures that will not covered by the warranty.