HP Armada 4200 Armada 4100 and 4200 Families of Personal Computers Maintenance - Page 84

4.1.2 Preventing Electrostatic Damage to Equipment Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree of sensitivity. The following proper packaging and grounding precautions are necessary to prevent damage: s Protect all electrostatic parts and assemblies with conductive or approved containers or packaging. s Keep electrostatic-sensitive parts in their containers until they arrive at static-free stations. s Place items on a grounded surface before removing them from their container. s Always be properly grounded when touching a sensitive component or assembly. s Place reusable electronic-sensitive parts from assemblies in protective packaging or conductive foam. Use transporters and conveyors made of antistatic belts and metal roller bushings. Mechanized equipment used for moving materials must be wired to ground and proper materials selected to avoid static charging. When grounding is not possible, use an ionizer to dissipate electric charges. 4.1.3 Removing Batteries Compaq recommends that you remove all batteries from the computer before beginning the disassembly procedures. Failure to do so could cause damage to computer components. 4-2 Removal and Replacement Preliminaries