H3C SR6608/6604 Routers Installation Manual Chapter 8 Maintaining Hardware8-1Chapter 8 Maintaining HardwareNote:The hardware maintenance process is the same for both the SR6608 and the SR6604.The SR6608 is taken as an example in this chapter.8.1 Preparing Toolsz Phillips screwdrivers: P1-100mm, P2-150mm, P3-250mmz Flat-blade screwdrivers: P4-75mmz ESD-preventive wrist straps, ESD-preventive glovesz Antistatic bags, antistatic padsNote:Except an ESD-preventive wrist strap, none of the above installation tools are shippedwith the device.8.2 Precautionsz Maintain the router hardware under the guidance of the local dealer or technicalsupport engineers appointed by H3C.z To avoid injuries, ensure that all power sources to the router are disconnectedbefore maintaining any hardware modules of the router.z Always wear an ESD-preventive wrist strap or ESD-preventive gloves whenmaintaining the router hardware. For more information, refer to section 4.1.4“Electrostatic Discharge Prevention” in Chapter 4 “Preparing for Installation”.z When installing or removing a demountable module, such as an RPE-X1, an LPU,a memory module, a CF card, a HIM, and a MIM, ensure good alignment with theslot and use uniform force to avoid damage to the module.z Put the removed memory modules, CF cards, HIMs, and MIMs on an antistaticworkbench with the PCB side facing upward or place them in antistatic bags.z When checking or moving a removed memory module, CF card, HIM, or MIM,avoid touching any components on the PCB.