Heath Heathkit SB-104A, Manual

Page: 132 / 204

Page 1-130
CEZ5ERE
C O N T I N U E
THE C U T - O F F
C O R N E R
Install the following transistors as
B
Remove the tubing for use with the
remaining three transistors.
0952: 2N6456 transistor.
0953: 2N6456 transistor.
Turn the circuit board foil-side-p so
the part number is in the position
shown.
F 0 I L S I D E
E
/ • · · • •.···•.·.••·•�G
( ) 0951: 2N6456 transistor.
( ) 0951: From the foil side of the
circuit board, push the tubing and
then the transistor into the hole
shown, Position the lead with the
cutoff corner so it points to the
letter C on the top of the board.
Form the leads down against the foil
for as much of their length as
possible. Make sure each transistor
stud is perpendicular to the circuit
board, Then solder each lead to the
foil. Carry the solder up as close as
possible to the transistor body to
reduce the effective length of the
leads.
I I
1 0 B I N G
Push the leads against the
circuit board foil. When
soldering, run the solder along
the edges of the leads as close
as possible to the transistor
body. It may help to press the
lead against the circuit board
foil with a screwdriver blade
until the solder hardens.
B.
Cut a 1" piece of 3/8" clear tubing.
A. Make sure the white body is
centered in
its circuit
board
hole
When you are instructed to
tighten
a
nut "finger tight," it means to
tighten that nut with your fingers as
much as possible. It does not mean
to leave the nut loose, nor does it
mean to use a wrench,
Before you solder transistor leads:
Handle power transistors with care,
particularly the studs.
( ) Carefully stretch one end of the
plastic tubing over the top of a
transistor.
3.
2
NOTES:
1.
IMPORTANT: Follow this Pictorial
ONLY if you were furnished type 2N6456
transistors (#417-831).
Study the following steps carefully and
have in mind just what is to be done and
how
you will to it. Only then should you
perform the steps.
PICTORIAL 11-9
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(INCHES)
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