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CIRCUIT BOARD ASSEMBLY
STARTS
( ) In the following steps, you will be
given detailed instructions on
how to install and solder the first
part on the circuit board. Read
and perform each step carefully.
Then use the same procedure
whenever you install parts on a
circuit board.
( ) Position the circuit board as
shown with the printed side (not
the foil side) up.
( ) R5: Hold a 1000 fl (brn-blk-red)
resistor with long-nose pliers as
shown and bend the leads straight
down to fit the hole spacing on the
circuit board.
( ) Push the leads through the holes
at the indicated location on the
circuit board. The end with color
bands may be positioned either
way.
( ) Press the resistor against the cir
cuit board. Then bend the leads
outward slightly to hold the resis
tor in place.
STEP-BY-STEP ASSEMBLY
PICTORIAL 1-1
CONTINUED
( ) Solder the resistor leads to the cir
cuit board as follows
1.
Push the soldering iron tip
against both the lead and the
circuit board foil. Heat both for
two or three seconds.
SOLDERING
IRON-
COMPONENT
LEADS
2.
Then apply solder to the other
side of the connection. IMPOR
TANT: Let the heated lead and
the circuit board foil melt the
solder.
SOL DERI NG
IRON-
SOLDER-
As the solder begins to melt,
allow it to flow around the con
nection. Then remove the solder
and the iron and let the connec
tion cool.
SOLDERING
&
SOLDER
( ) Cut off the excess lead lengths
close to the connection. WARN
ING: Clip the leads so the ends
will not fly toward your eyes.
( ) Check each connection. Compare
it to the illustrations on Page 9.
After you have checked the solder
connections, proceed with the as
sembly on Page 10. Use the same
soldering procedure for each
connection.
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