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6-3Removal and Replacement
SAFETY CONSIDERATIONS
The Safety Symbols used with Hewlett-Packard instruments are illustrated in the front mat-
ter of this manual. WARNING and CAUTION symbols and instructions must be reviewed
before service work is performed. These warnings and cautions must be followed for your
protection and to avoid damage to the plotter.
W A R N I N G
!
!
ESD CONSIDERATIONS
Integrated circuits can be damaged by electrostatic discharge. To prevent damage to the plot-
ter circuits from high voltage electrostatic discharge, take the following precautions:
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 PCA from its conductive foam pad or conductive packag-
ing until you are ready to install it.
4. Ground your body while disassembling and working on the plotter.
5. After removing a cover from the plotter, attach a clip lead between the PCA common
and earth ground. Touch all tools to earth ground to remove static charges before
using them on the plotter.
6. After removing any PCA from the plotter, place it on a conductive foam pad or into
its conductive packaging to prevent ESD damage to any ICs on the PCA.