Elecraft KXPA100 Assembly Manual - Manual (Page 13)

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The spacing between the ATU module and the low pass filter board below it is critical for the front panel to
fit and the switches to operate smoothly. Before proceeding with the assembly, check to ensure the spacing is
correct as follows:
 Unwrap the front panel, remove any tape on the reverse side just as you did for the rear panel (see
Figure 3) and place it over the LEDs and switches as shown in Figure 10. The fit may be snug, but both
rows of LEDs must fit in the openings:
 Press the
MODE and TUNE switches. They move only a small amount, but you should feel a definite
movement when pressed and the switch should return by itself when released.
 Ensure the
OFF/ON slide switch moves easily.
If you have difficulty fitting the front panel over the LEDs or the switches stick when pressed, increase the
spacing between the ATU module and the low pass filter board by removing the ATU module and adding one
split ring lock washer under each spacer as shown in Figure 11. Replace the ATU Module and confirm that the
switches now operate smoothly.
Figure 10. Testing Front Panel Fit.