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6.
Each circuit part in an electronic kit has its own
component number (R2, C4, etc.). Use these
numbers when you want to identify the same
part in the various sections of the Manual. These
numbers, which are especially useful if a part
has to be replaced, appear:
— In the Parts List,
— At the beginning of each step where a com
ponent is installed,
— In some illustrations,
— In the Schematic,
— In the section at the rear of the Manual.
7.
When you are instructed to cut something to a
particular length, use the scales (rulers) pro
vided at the bottom of the Manual pages.
SAFETY WARNING: Avoid eye injury when you cut
off excessive lead lengths. Hold the leads so they
cannot fly toward your eyes.
SOLDERING
Soldering is one of the most important operations you
will perform while assembling your kit. A good sol
der connection will form an electrical connection be
tween two parts, such as a component lead and a
circuit board foil. A bad solder connection could pre
vent an otherwise well-assembled kit from operating
properly.
It is easy to make a good solder connection if you
follow a few simple rules:
1.
Use the right type of soldering iron. A 25 to
40-watt pencil soldering iron with a 1/8" or 3/16"
chisel or pyramid tip works best.
2.
Keep the soldering iron tip clean. Wipe it often
on a wet sponge or cloth; then apply solder to
the tip to give the entire tip a wet look. This
process is called tinning, and it will protect the
tip and enable you to make good connections.
When solder tends to "ball" or does not stick to
the tip, the tip needs to be cleaned and retinned.
NOTE: Always use rosin core, radio-type solder
(60:40 or 50:50 tin-lead content) for all of the solder
ing in this kit. This is the type we have supplied with
the parts. The Warranty will be void and we will not
service any kit in which acid core solder or paste has
been used.
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