28 Upgrade and Maintenance Manual CX400 M4Important information● The components marked with a warning notice (e.g. lightning symbol) mayonly be opened, removed or exchanged by authorized, qualified personnel.Exception: CSS components can be replaced.● The warranty is void if the server enclosure is damaged during installation orreplacement of server enclosure expansions.● Only set screen resolutions and refresh rates that are specified in theoperating manual for the monitor. Otherwise, you may damage your monitor.If you are in any doubt, contact your sales outlet or customer service center.● Only valid for non hot-plug componentsBefore installing/removing internal components to/from the serverenclosure, turn off the server enclosure, all peripheral devices, and anyother connected devices. Also unplug all power cords from the power outlet.Failure to do so can cause electric shock or damage.Internal devices remain hot after shutdown. Wait for a while after shutdownbefore installing or removing internal options.● Do not damage or modify internal cables or internal devices. Doing so maycause a server enclosure failure, fire, or electric shock and will void thewarranty and exempt the manufacturer from all liability.● The circuit boards and soldered parts of internal options are exposed andcan be damaged by static electricity. To ensure reliable protection, you mustwear an earthing band on your wrist when working with this type of moduleand connect it to an unpainted, conducting metal part of the serverenclosure.● Do not touch the circuitry on boards or soldered parts. Hold the metallicareas or the edges of the circuit boards.● Install the screw removed during installation/detaching internal options informer position. To use a screw of the different kind can cause a breakdownof equipment.● The procedure of installation on this notes might change depending on aconfiguration of option.Batteries● Incorrect replacement of batteries may lead to a risk of explosion. Thebatteries may only be replaced with identical batteries or with a typerecommended by the manufacturer.● Do not throw batteries into the trash can.
