Elecraft KRX3 User Manual download pdf (Page 17)

Locate resistor R3 on the front panel board (the board still mounted on the front panel assembly). If R3 is

positioned above the board on its leads as shown in Figure 16, push it over to one side of the outline as shown.

Be sure you don’t push it so far its leads might touch the solder pads for other components on the board.

Figure 16. Positioning R3 on the Front Panel Board.

Check the VFO B encoder and trim the pins as shown below if they haven’t been trimmed already to ensure

they cannot short against the main DSP board. If trimming is needed, remove the encoder to ensure clipped ends

don’t get lost in the front panel assembly. To remove the encoder, loosen the set screws and remove the knob,

then remove the felt washer and nut and lift the encoder out. You need trim only the five pins shown close to the

back of the pc board. Replace the encoder by reversing the process. Be sure the spacer nut on the inside is tight

against the shoulder of the ferrule.

Figure 17. Checking and Trimming the VFO B Encoder Pins.

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Elecraft KRX3 User Manual Page 17