ELECRAFT K3EXREF El manual del propietario descargar pdf (Pagina 10)

Replacing the Synthesizer(s)

CAUTION:

The synthesizer mounting screws use two lock washers, one between the

pc board and the front panel shield and one under the screw head. Do not lose the lock

washers inside the K3. Some builders find it easier to stand the K3 on one side so a dropped

lock washer does not fall down onto the main RF board covering the bottom.

Unplug the coaxial cables from the synthesizer(s). The connectors are a friction fit and pull apart. Pull on

the metal “ears” of the TMP connectors, not on the coaxial cable (see Figure 6).

Figure 6. TMP Cable Connectors.

Loosen the two mounting screws at the top of the synthesizer board. Do not remove the screws completely

until you have loosened both of them and located the lock washer between the pc board and the front panel

shield. Slide the split-ring lock washer on each screw toward the pc board and then carefully finish unscrewing

each screw (see Figure 7) Once the screw is clear of the threaded PEM nut on the front panel shield you can

carefully grab the split ring lock washer with your needle nose pliers and remove it, then remove the screw and

remaining lock washer. It helps to remove both screws a few turns at a time so you have the greatest amount of

room to reach in and grab the lock washer while the other screw is still partially threaded into the PEM nut. If

your K3 is equipped with the K3EXREF option, the distance you can pull the synthesizer away from the front

panel shield is limited but there is still adequate clearance (see Figure 8).

Figure 7. Removing Synthesizer Mounting Screws.

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ELECRAFT K3EXREF El manual del propietario Pagina 10