Lenovo ThinkSmart Hub 500 User Manual And Hardware Maintenance Manual

Chapter 4. Replacing hardwareThis chapter provides instructions on how to replace hardware for your meeting console.Before replacing hardwareAttention: Do not open your meeting console or attempt any repairs before reading this section and theImportant Product Information Guide.Notes before replacing hardware• Use meeting console components provided only by Lenovo.• When installing or replacing an option, use the appropriate instructions explained in this manual along withthe instructions that come with the option.• In most areas of the world, Lenovo requires the return of defective CRUs. Information about this will comewith the CRU or will come a few days after the CRU arrives.Handling static-sensitive devicesDo not open the static-protective package containing the new part until the defective part has been removedand you are ready to install the new part. Static electricity, although harmless to you, can seriously damagemeeting console components and options.When you handle options and other meeting console components, take these precautions to avoid static-electricity damage:• Limit your movement. Movement can cause static electricity to build up around you.• Always handle options and other meeting console components carefully. Handle PCI/PCIe cards, memorymodules, system boards, and microprocessors by the edges. Never touch any exposed circuitry.• Prevent others from touching the options and other meeting console components.• Touch the static-protective package containing the part to a metal expansion-slot cover or otherunpainted metal surface on the meeting console for at least two seconds. This reduces static electricityfrom the package and your body before you install or replace a new part.• When possible, remove the new part from the static-protective package, and install it directly in themeeting console without setting the part down. When this is not possible, place the static-protectivepackage on a smooth, level surface and place the part on the package.• Do not place the part on the system cover or other metal surface.Knowing FRUs (including CRUs)• Field Replaceable Units (FRUs) are computer parts that a trained technician can upgrade or replace. FRUsinclude all CRUs. For detailed FRU information, such as the FRU part numbers and supported meetingconsole models, go to:http://www.lenovo.com/serviceparts-lookup• Customer Replaceable Units (CRUs) are computer parts that a user can upgrade or replace.– Self-service CRUs: You can install self-service CRUs easily. These CRUs might be stand-alone,latched, or secured by up to two screws. Examples of self-service CRUs include the keyboard, mouse,any USB device. You are responsible for replacing all self-service CRUs.– Optional-service CRUs: Handling optional-service CRUs requires some technical skills and simple tools(such as a screwdriver). These CRUs are isolated parts within the computer. They are usually© Copyright Lenovo 2018 13