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ASSEMBLY INSTRUCTIONS
In ALL PC board assembly steps, our word "INSTALL" means to do this:
Insert the part, oriented or "pointed" correctly, into its holes in the PC
board.
If helpful, gently BEND the part's wire leads or tabs to hold it in place,
with the body of the part snugly against the top side ("component side")
of the circuit board. The "component side" is silkscreened with the part
numbers for easy parts location identification.
Solder ALL wires or pins of the part.
Trim or "nip" all excess wire lengths extending beyond each solder
connection, taking care that wire trimmings do not become lodged in
solder connections.
Follow the assembly instructions IN SEQUENCE and check off each step as
understood and completed. Examine the schematic circuit diagram and PC
Board parts layout diagram as you proceed.
Use good soldering techniques! Let your soldering iron tip heat both the
component lead wire and PC board trace enough so that the wire itself AND
the foil trace BOTH become hot enough TOGETHER to melt a bit of solder
so that it flows smoothly from the pin to the PC board trace.
Enough said... Let's get building!
As you build your video switcher kit save the clipped off leads from
capacitors and resistors. These will be needed later to form jumpers that
allow the circuit traces to run along both sides of the PC board. If you throw
out your lead scraps you'll have to find buss wire to make these important
connections.
1. Install U2, the quad analog switch. To ensure that the part is seated
flat on the PC board, mount the part and place the circuit board
component side down on the table top before soldering the leads. This
will keep the IC from moving while you solder it. Be sure to solder all 14
pins.
2. In the same way, install the 20 pin IC socket. As with the IC installed
in step 1, be sure you seat the socket flush with PC board before
soldering.
AVS10 – 9
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