Heathkit SB-401 Assembly Manual page 73

Detail 4-6C
Detail 4-68 -----
COLOR
BAND
COLOR
END
NOTE: WHEN INSTALLING SILICON DIODES. THE
CATHODE END MUST BE PLACED AS DIRECTED.
THE CATHODE END IS MARKED WITH EITHER
A COLOR END. COLOR DOT. OR COLOR BAND.
5-1/2"
5-1/2"
5-1/2"
4-1/4"
3-1/2"
3-1/4"
3"
2_1/2"
3"
3"
3"
3"
RED-YELLOW
RED
YELLOW-BROWN
YELLOW
GREEN-YELLOW
GREEN
BROWN
BLUE
BLACK
BLACK-RED
BLACK-YELLOW
BLACK-GREEN
( ) Refer to Detail 4-6C, and cut the power
transformer (#54-198) leads to the specified
lengths. Measure the leads from where they
come out of the transformer case. After
the leads are cut to length, remove 1/4" of
insulation from the end of each lead and
melt a small amount of solder on the exposed
lead ends.
,
( ) Refer to Detail
4-6B,
and identify the
cathode lead of a silicon diode.
( ) Red to lug 5 (NS).
( ) Yellow to lug 4 (NS).
( ) Connect a 2-1/2" red wire between lugs 2
(NS) and 5 (S-2) of terminal str-ip AC.
( ) Connect a 100
Kn
(brown-black-yellow) 2
watt resistor between lugs 1 (NS) and 4 (S-1)
of capacitor AE.
( ) Three orange to lug 1 (NS).
Connect the wires from
BO#10 to terminal
strip AC as follows:
( ) Connect the black filter choke lead to lug 1
of capacitor AE (NS).
( ) Position the chassis as shown in Pictorial
4-6.
( ) Solder lug 3 of capacitor AE to the capacitor
mounting wafer (S-1).
( ) Connect the red filter choke lead to lug 2
of capacitor AE (NS).
This completes the wiring of the relay. Check
visually to see that no shorts exist. Lugs 7 and
15 should not have any connections.
( ) Connect the cathode lead of the diode to lug 4
(S-2) and the other lead to lug 2 (S-3) of
terminal strip AC.
( ) Connect a
2-1/2"
red wire from lug 4 of
relay AA (S-l) to lug 2 of terminal strip
AC (NS).
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