HP C7769B Service Manual - Page 169

Removal and Installation Electrostatic Discharge (ESD) Precautions To prevent damage to the Printer circuits from high-voltage electrostatic discharge (ESD): 1. Do not wear clothing that is subject to static build-up. 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. Required Tools The following tools are required to disassemble and repair the Printer. Long Torx Screwdriver with the indicated attachments Nut driver with the indicated attachments Small flat-blade screwdriver HP DesignJets 500 and 800 Series Printers Service Manual 8-3