REMOVE
PAPER BACKING
0
,
)
Page
19
In a similar manner, connect the free end of
the
7"
black wire coming from the solder lug at switch A to
the 1200
pF
capacitor lead. Solder the connection.
Remove the paper backing from the fuse label. Then
position the label onto the inside of the cabinet top as
shown, cover the label with the paper backing, and
press the label in place. This will prevent any ink from
smearing.
Carefully peel away the backing paper from the blue
and white identification label. Then press the label
onto the inside of the cabinet top. Be sure to refer to
the numbers on this label in any communications you
have with the Heath Company about this kit.
Detail 5-1A
Connect the remaining free wire ends to the switches in the
cabinet top as follows:
Blue and green wire pair.
Blue wire coming from hole AD to lug 1 of switch A
(S-1).
Refer to Detail 5-1A and bend the lugs of switches C,
D, E, and F down against the switch insulators as
1'
4
)
shown.
Bend the remaining length of fish paper 7/8" from one
end, remove the protective paper backing, and cover
switches C, D
,
E, and F as shown.
Green wire coming from hole AC to lug 2 of switch B
(S-1).
Red and brown wire pair.
)
Red wire to lug 2 of switch A (NS).
Refer to Pictorial 5-2 (fold-out from Page 23) for the
following steps.
%-.. Mount the circuit boards to the cabinet bottom. Use
five 2-32 x
1/4"
self-tapping screws. Do not
overtighten the screws.
Connect the remaining transformer leads to the main circuit
bo d as follows:
Either red wire to the connector pin at hole X
(S-1). See inset drawing
#1.
Other red wire to the connector pin at hole Y
(S-1).
Either green wire to the connector pin at hole Z
(S-1).
Other green wire to the connector pin at hole T
(S-1) NOTE: Be sure the connector pin is not
touching the 1200 µF capacitor.
Locate the fuse label and record the fuse rating on the
label (3/16 ampere).
( I Refer to inset drawing #2 and connect the free end of
the black wire coming from the solder lug at switch C
to the lead of the 1200 jiF capacitor as shown. Solder
the connection.
Brown wire to lug 1 of switch B (NS).
Violet and gray wire pair.
,
j) Violet wire coming from hole AB to lug 2 of switch A
(S-2).
(
Gray wire coming from hole AA to lug 1 of switch
B
(S-2).
This completes the wiring of your Heathkit Electronic
Clock. Carefully inspect all connections for loose wires or
unsoldered connections. Remove any wire clippings or
solder splashes. Then continue with the assembly steps.
NOTE: The integrated circuit (IC) can be damaged by static
voltage. To prevent this, be sure you have no static voltage
built up on your person or clothing before you handle the
I C.
'N)
Locate the MK5017AA integrated circuit
(#443
-
601).
Position the dot end
of the IC
over the half dot
screened on the main circuit board. Then insert the IC
leads into the IC connectors. (See inset drawing #3.)
Be sure each IC lead is properly inserted.
DO NOT
solder the
IC
to the connectors.
)v)
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