Heathkit IT-12, Инструкция по сборке, Страница: 17 / 30

Page 15
( ) Cut 2" off the red wire and strip both ends of all the wires.
( ) Connect the blue wire to pin 2 (Sl) of the eye tube.
( ) Connect the red wire to pin 4 (S2).
( )Connect the green wire to pin 5 (Sl).
( ) Connect the orange wire to pin 7 (Sl).
( ) Connect the brown wire to pin 8 (Sl).
( ) Plug the socket on the 1629 eye tube and push the tube into the spring clip holder.
PREPARING THE PROBE AND TEST LEADS
( ) Mount the RF-Audio switch S2 on the terminal board by bending the lugs on the swithch as shown.
( ) Push one end of a 1 3/4" length of wire through hole C of the terminal board. Connect the other end to lug 3 (Sl) of
switch S2.
( ) Connect one end of a 3" length of wire to lug 2 (Sl) of switch S2. Strip the other end approximately 1".
( ) Push one lead of a . 001 ceramic disc condenser through hole C of the terminal board, and the other lead through
hole B.
( ) Connect the lead closest to the marking bands of the crystal diode to lug 1 of switchS2 (Sl).
Caution: Crystal diodes can be damaged by excessive heat. Use as little heat as possible when soldering. Push the other
lead of the diode through hole B and twist together with the condenser lead. Solder the two leads on the switch side of
the board and trim off any excess lead. (Use an alligator clip to hold wires in board).
( ) Cut away one inch of the outer insulation of the coaxial cable.
Double the lead over and pull the center conductor through the side
of the braid as shown. Strip off 1/4" of the insulation from the
center conductor.
( ) Slip the black probe end over the opposite end of the cable and
cut off 2" of the outer insulation. Pull the center conductor through
the braid, strip off 1/4" of the center conductor insulation and feed
the wire through hole A in terminal board, from the switch side.
Push the end of the wire through hole C. Twist the three wires
together and solder on the switch side of the board trim off excess
lead.