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Vectronics VEC-221K User Manual

Page 17

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VEC-221K Instruction Manual

CW Memory Keyer Kit

12

of the switch assembly, and set it to the side of the switch body as
shown below. Be careful not to remove the end under the spring.

! ! 23. The front-panel controls are mounted next. Before installing these

parts, inspect the potentiometer supplied with your kit. If the pins are
located on the front side of the pot, use the front set of mounting holes
on the PC board for installation. If the pins are on the rear, use the
rear set of mounting holes (see below). Also, using side cutters,
remove the key tab from the side of each pot prior to installation.

Rear pins use rear holes.

Front pins use front holes.

Nip off tab.

Nip off tab.

! ! 24. Install a 10K ohm potentiometer at R6. Insert the potentiometer leads

until the shouldered stops on all three leads are flush to the PC board.
Solder the three leads.

! ! 25. Install the other 10K ohm potentiometer at R8, following the

procedures used for R6. Solder.

! ! 26. Locate the 9-volt battery clip. Install and solder the free end of the

black lead to the negative (GND) termination point on the PC board.

! ! 27. The remaining red battery clip lead should be installed and soldered to

the positive (+9V) termination point on the PC board.

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