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Se(t.
Mag(,
0
1.
3.
SERVICING EICHED
CIRCUI'
BOARDS
CAUTION
When
servicing printed circuits
DO
NOT push
or
pull wires in
sucir a way as to
raise the printed wiring Irom the
board.
!Vhen
soldering leads, use
5O
watt
iron or smaller.
Apply heat
sparingly to
the
leads on the
part
to lte replaced, not to the printed wiring
on
the board.
Before installing
new
parts,
clean holes
to receive
new
paft
without
forcing.
Have
new leads tinned and
iI
necessary
Iluxed to receive solder quickly with a minimum
of heat
and
without I'esidue.
Apply heat sparingly to lead oI part to be re-
placed.
Remove
part from card
as
iron
heats
the lead.
@
@
Bend clean leads
on new
part
and
careIuIIy
insert
through holes on board.
Using a
small awl. carefuily
clean inside
oI
hole
left
by old part.
4.
Hold
part
against board and solder
leads.
Figure
4-1.
Diagram
Showing how
to Replace Parts
Mounted
on Etched
Circuit
Boards
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