Heathkit SB-1000 - Page 49

Heathkit
Refer to Pictorial. 6-18 while you perform the follow-
ing steps.
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Position the front panel as shown in the Pictor-
ial.
SW2: Refer to Detail 6-18A and push a rocker
switch into front panel hole SW2 until it locks
into place. NOTE: Make sure the two lugs are
toward the bottom edge of the panel as shown
in the Pictorial.
SWI: Similarly, push a rocker switch into front
panel hole SW1 until it locks into place. NOTE:
Make sure the two lugs are toward the bottom
edge of the panel as shown in the Pictorial.
Locate the LED (light-emitting diode). Then
cut the shorter lead to 3/4" and the longer lead
to7/8".
D1: Refer to Detail 6-18B and use the following
procedure to mount the LED to the front panel:
1. Push the LED grommet into front panel
hole D1.
2. Hold the LED grommet in place while you
push the LED as far as possible into the
grommet. NOTE: You may have to wiggle
the LED to get its flange started into the
grommet.
3. Push the LED retainer onto the grommet
until it locks the LED assembly in place.
Refer to Pictorial 6-19 while you perform the follow-
ing steps.
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Position the front panel assembly near the chas-
sis as shown in the Pictorial.
Connect the free end of either medium black
stranded wire, coming through the hole in the
front subpanel, to switch SW3 lug 1 (S-1). Make
amechanically secure connection.
Connect the free end of the remaining medium
black stranded wire to switch SW3 lug 2 (S-1).
Make a mechanically secure connection.
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Connect the free end of the yellow solid wire to
switch SW1 lug 1 (S-1).
R3: Cut one lead of a 33 Q, 1/2-watt (org-org-
blk) resistor to 3/8". Then bend the other lead
over as shown in Detail 6-19A Part A and cut it
so it is the same length as the other lead.
Prepare a 3-1/2" yellow solid wire. Then refer
to Detail 6-19A Part B and crimp and solder onc
end of the wire to the indicated resistor lead.
Keep the connection as close to the resistor body
as possible.
Refer again to Detail 6-19A Part B and install
a spring connector on the end of each resistor
lead.
Position the spring connectors and the 2-hole
socket shell as shown in Detail 6-19A Part C.
Then push the connectors into the socket shell
until they lock into place.
Push the 2-hole socket shell onto the leads of
LED D1 so the resistor lead that does not have
the yellow wire soldered to it is connected to
the shorter LED lead. Then refer to Detail 6-
19A Part D and bend the LED leads over
against the socket shell so it cannot slide off of
the leads.
Connect the free end of the yellow wire to
switch SW1 lug 2 (S-1).
Connect the free end of the blue wire coming
from the cutout in the front subpanel to the
indicated lead of resistor R3 (S-1).
Refer to Pictorial 6-20 while you perform the follow-
ing steps.
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Carefully peel the backing paper from a light
diffuser strip. Then refer to Detail 6-20A and
press the light diffuser onto the top of the
multimeter.
Similarly press a light diffuser onto the top of
the grid current meter.
M2: Position the face of the multimeter in its
corresponding cutout in the front panel.
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