Elecraft KX1 Manual - Manual (Page 28)

E
LECRAFT 27
Alignment and Test - Part I
In this section you’ll become familiar with basic KX1 operation, while
testing the control and display functions.
i
Microcontroller U1 is extremely static-sensitive. Wear a
wrist strap or ground yourself before handling U1.
Remove microcontroller U1 from its conductive foam packing
and inspect the pins. The two rows of pins must be straight and
parallel to each other to establish the proper pin spacing for insertion
into the socket. If necessary, straighten the pins as shown in Figure 5.
Identify the end of the IC where Pin 1 is located. It will have a
notch, a dimple or both at this end (see Figure 11).
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When U1 is pressed into its socket, you must be careful to
avoid jamming its pins. Make sure all the pins are lined up with
the associated holes before pressing down on the IC. Watch the
pins on both rows as you press down to be sure each pin goes
straight down into its socket hole and does not bend in under the
IC or outward alongside the socket. Realign each pin individually
with its socket hole, if necessary.
Insert microcontroller U1 in its socket with pin 1 or the notched
end lined up with the notched end of the socket (the end closest to the
edge of the board).
Press down very firmly on U1. If it is not seated as far as
possible into its socket, the pins may not make good contact.
Temporarily mount the VFO knob on the shaft of encoder Z1.
Align the set screw with the flat side of the encoder shaft and tighten it
using the Allen wrench supplied.
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You may notice some side play in the encoder shaft. This is
normal in miniature shaft encoders with an integral pushbutton
switch.
Set slide switches S1 and S2 to the OFF position.
Connect an 8 to 14 VDC power supply to J1 with the positive (+)
lead to the center pin. A mating connector for J1 is supplied with the
kit. If you use a power supply voltage of less than about 10.5 volts,
you may see a BAT LO message flashed on the LED during initial
tests. This is because the BAT menu parameter is set to 10.0 volts by
default. You can set the BAT parameter to a lower value to eliminate
the warning message.
Unwrap the cover and set it near the circuit board so you can see
the legends identifying the switches and their functions.
i
If any test or alignment step fails, refer to the
Troubleshooting section (Appendix E).