Elecraft KX1 Manual - Manual (Page 25)

24
E
LECRAFT
Test fit slide switch S2 along the edge of the board next to
electrolytic capacitor C10. The switch can be oriented either way
around. Note that it rests on shoulders on the three terminals that
determine its height above the board.
Hold S2 vertical and against the shoulders on the tabs with your
finger on the slide, and tack-solder the center pin to hold it in place.
Inspect the switch to be sure it is perfectly vertical and not tipped
to either side. If necessary, reheat the pin and adjust the switch’s
position.
When you are satisfied that the switch is perfectly straight, solder
the two end pins. Resolder the center pin last as needed to create a
good joint.
Use the same procedure to install slide switch S1 to the left of
crystal X1. S1 also may be mounted oriented either way.
i
Voltage regulators U8 and U9 are installed in the following
steps. These devices look very similar. Double check the markings
on each device to be sure you have the correct one before soldering
it in place.
Install U8 (78L05) next to pushbutton switch S5 as follows:
_ Align the flat side of the device as shown by the printed
outline (see Figure 10).
_ Insert the device into the solder pad holes until the top of the
device is less than 5/16” (7.9 mm) above the board. Use a
ruler to confirm the height. If necessary, remove the device
and form the center lead to allow it to sit close enough to the
board.
_ Solder and trim all three leads.
OR
FLATTENED
BACK
ROUNDED
BACK
PCB OUTLINE
Figure 10. Transistor Orientation Guide.