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ROSIN CORE SOLDER HAS BEEN SUPPLIED WITH THIS KIT. THIS TYPE OF
SOLDER
MUST BE USED FOR ALL SOLDERING IN THIS KIT. ALL GUARANTEES ARE
VOIDED
AND WE WILL NOT REPAIR OR SERVICE EQUIPMENT IN WHICH ACID CORE SOLDER
OR PASTE FLUXES HAVE BEEN USED. IF ADDITIONAL SOLDER IS NEEDED, BE SURE
TO PURCHASE ROSIN CORE (60:40 or 50:50 TIN-LEADCONTENT) RADIO TYPE SOLDER.
PROPER
SOLDERING TECHNIQUES
Only a small percentage of HEATH KIT' equip-
ment purchasers find it necessary to return an
instrument for factory service. Of these instru-
ments, by far the largest portion malfunction
due to poor or improper soldering.
If terminals are bright and clean and free of wax,
frayed insulation and other foreign substances,
no difficulty will be experienced in soldering.
Correctly soldered connections are essential if
the performance engineered into a kit is to be
fully realized.
If you are a beginner with no
experience in soldering, a half hour's practice
with some odd lengths of wire may be a worth-
while investment.
For most wiring, a 25 to 100 watt iron or its
equivalent in a soldering gun is very satisfactory.
A lower wattage iron than this may not heat the
connection enough to flow the solder smoothly
over the joint. Keep the iron tip clean and bright
by wiping
it from time to time with a cloth.
CHASSIS WIRING AND SOLDERING
1.
Unless otherwise indicated, all wire used
is the type with colored insulation (hookup
wire); the size of the conductor is the same
for all colors of hookup wires furnished with
this kit. In preparing a length of hookup wire,
1/4" of insulation should be removed from
each end unless directed otherwise in the
construction step.
2.
To avoid breaking internal connections when
stripping insulation from the leads of trans-
formers or similar components, care should
be taken not to pull directly on the lead. In-
stead, hold the lead with pliers while it is
being stripped.
3.
Leads on resistors, capacitors and similar
components are generally much longer than
they need to be to make the required con-
nections. In these cases, the leads shouldbe
cut to proper length before the part is added
to the chassis. In general, the leads should
be just long enough to reach their termin-
ating points.
4.
Wherever there is a possibility of bare leads
shorting to other parts or to the chassis, the
leads
should be covered with insulating
sleeving. Where the use of sleeving is spe-
cifically intended, the phrase "use sleeving"
is included in the associated construction
step. In any case where there is the pos-
sibility of an unintentional short circuit,
sleeving should be used. Extra sleeving is
provided for this purpose.
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