Elecraft PX3 Owner's Manual - Manual (Page 40)

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Remove the front panel display board from its anti-static packaging. Do not remove the rubber band, It is
holding the LCD in place. Mount four 2-56 5/16” (7.9 mm) standoffs on the front panel display board as shown
in Figure 24. Be sure to place one lock washer between the standoff and the pc board as shown. This lock
washer is important to establish the proper height of the standoff.
You may find it easiest to install both lock washers by holding the screw and first lock washer in place in
each hole, then using your needle-nose pliers or tweezers to add the lock washer on the LCD side of the board,
followed by the standoff.
Figure 24. Mounting the Front Panel Standoffs.
Locate the front panel. On the inside are four small pieces of conductive tape covering screw holes at each
corner of the large opening for the LCD (see Figure 26). Do not remove this tape! It provides an essential
ground for the LCD when the front panel board is mounted. Use a sharp knife point or other tool to open the
tape over each screw hole Work from the inside so you do not push the tape away from the panel. This is needed
to mount the front panel board later, but first you will need to prepare the front panel board for installation in the
next few steps.
Figure 25. Front Panel Conductive Tape.