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8-4 Removal and Installation
HP DesignJet 430, 450C and 455CA Printers
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.