HP 450c Service Manual - Page 126
Electrostatic Discharge ESD Precautions
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Electrostatic Discharge (ESD) Precautions To prevent damage to the Printer circuits from highĆvoltage electrostatic discharge (ESD): 1. Do not wear clothing that is subject to static buildĆup. 2. Do not handle integrated circuits (ICs) in carpeted areas. 3. Do not remove an IC or a printed circuit assembly (PCA) from its conductive foam pad or conductive packaging until you are ready to install it. 4. Ground (earth) your body while disassembling and working on the Printer. 5. After removing a cover from the Printer, attach an earthing (ground) lead between the PCA common and earth ground. Touch all tools to earth ground to remove static charges before using them on the Printer. 6. After removing any PCA from the Printer, place it on a conductive foam pad or into its conductive packaging to prevent ESD damage to any ICs on the PCA. 8-4 HP DesignJet 430, 450C and 455CA Printers Removal and Installation