Vectronics VEC-422K - Manual (Page 11)

VEC-422K Owner's Manual SCA Decoder Kit
9
STEP-BY-STEP ASSEMBLY
Before assembling your kit, please take time to read and understand the VEC kit
warranty printed on the inside cover of this manual. Read through the assembly
instructions to make sure the kit does not exceed your skill level. Once
construction is started, the kit is non-returnable. Finally, if you haven’t already
done so, please verify that all parts listed in the inventory are included. If
anything is missing or broken, refer to the warranty instructions for replacing
missing or damaged parts.
First, a few notes and comments to help you along. Part designators for
components such as R1, C3, etc., appear on the silk-screened legend on the
component-mounting side of the printed circuit board. These correspond to the
drawing shown in the Parts Placement Diagram found in this manual. The parts
are inserted on the silk-screen side of the board. All capacitors should be
installed with their bodies as close to the PC board as possible; this is very
important in RF circuits.
If you have last-minute questions concerning what tools or materials are needed
to assembly this kit, please refer back to the section entitled “Before You Start
Building”.
“Install” When you are directed to install a part, this means to locate, identify,
and insert the part into its mounting holes on the PC board. This includes pre-
bending or straightening leads as needed so force is not required to seat the part.
Once a component is mounted, bend each lead over to hold it in place. Make
sure trimmed leads don’t touch other pads and tracks, or a short circuit may
result:
Good Not Good
“Solder” When you are directed to solder, this means to solder the part’s leads
in place, and to inspect both (or all) solder connections for flaws or solder
bridges. If no soldering problems are noted, nip off the excess protruding leads
with a sharp pair of side cutters.
Notice the directions use two sets of check boxes. Check one when a step is
complete and use the other for double-checking your work before operation.