Heathkit SB-1000 - Page 29

Heathkit
ie C7: Connect a 1000 pF (102) mica capacitor from
coil L2 lug 2 (NS) to the bottom hole in solder
lug FD (S-2). NOTE: You will connect wires to
the top hole in this solder lug later.
(Y CS: Connect a 3300 pF (332) mica capacitor from
coil L1 lug 2 (NS) to the top hole in solder lug
FD (NS).
C6: Connect a 2700 pF (272) mica capacitor from
coil L1 lug 1 (NS) to the top hole in solder lug
FD (S-2). NOTE: Two wires were previously
soldered to the bottom hole in this solder lug.
Refer to Pictorial 5-4 while you perform the
following steps.
NOTE: When a step directs you to prepare a solid
wire, first cut the wire to the indicated length. Then
remove 1/4" of insulation from each end.
Prepare the following lengths of small black
solid wire. The wires are listed in the order in
which you will use them.
See
S212"
aE
2-1/2"
431/4"
3/4"
Bue
1/4"
9-1/4"
oy
Route one end of a 3" black solid wire through
grommet FA and connect it to coil L6 lug 1 (NS).
The other end of this wire will be connected
later.
Connect a 2-1/2" black solid wire from coil L6
lug 1 (S-3) to switch SW2A/SW2B lug 14 (S-1).
YY Connect a 2-1/2" black solid wire from coil L6
: lug 2 (S-2) to switch SW2A/SW2B lug 7 (S-1).
Nea Connect one end of a 2-1/2" black solid wire to
coil L5 lug 1 (S- 2). The other end of this wire
will be connected later.
Mae Connect a 3-1/4" black solid wire from coil L4
lug 2 (S-2) to switch SW2A/SW2B lug 12 (S-1).
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Page 31
Connect a 3-3/4" black solid wire from coil L1
lug 2(S-2) to switch SW2A/SW2B lug 1 (S-1).
Ww Connect a 3-1/2" black solid wire from coil L1
lug 1 (S-2) to switch SW2A/SW2B lug 8 (S-1).
Connect a 3-1/4" black solid wire from coil L2
lug 2 (S-2) to switch SW2A/SW2B lug 3 (S-1).
wf
Ir
x
Connect a 2-1/4" black solid wire from coil L2
lug 1{(S-2) to switch SW2A/SW2B lug 10 (S-1).
Connect a 3" black solid wire from coil L3 lug 2
(S-2) to switch SW2A/SW2B lug 4 (S-1),
Connect the free end of the wire coming from
coil L5 lug 1 to switch SW2A/SW2B lug 13 (S-
dD.
Position all wires away from the rotary switch
shaft and the rotor so they do not rub when you
turn the shaft. Also make sure switch lugs 1, 7,
8, and 14 do not touch the switch mounting
hardware.
Refer to Pictorial 5-5 while you perform the
following steps:
() Reposition the input chassis as shown in the
Pictorial.
NOTE: The inset drawing on the Pictorial shows you
how the rotary switch lugs are numbered. Each
position is numbered, even if there is no lug at that
position.
YW
v
Cut a 1-3/4" length of large bare wire. Then use
pliers to flatten at least half of its length so it
will fit into the holes in the rotary switch
lugs.
VW Pass the flattened end of the 1-3/4" large bare
wire through switch SW1D lug 1 to switch
SWIE lug 1 (both lugs). Leave about 1” of bare
wire extending from SWD lug 1. Then solder
the wire to all three lugs.
L9: Refer to Detail 5-5A and use the following
procedure to mount the toroid coil to the input
chassis:
Y
1. Use a knife or screwdriver blade to clean
away any excess tar from the mounting
hole of the toroid coil.
4 5 6
A A
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