Ramsey Electronics WCT3 Manual page 18

Thru hole component installation:
The remainder of the components are thru hole components. When installing
all except the LED's they should be inserted and placed as close to the circuit
board as possible.
57. Next install D3 and D4, marked CDSH270. Notice that there is a
black band on one end of the diodes. Place the diodes so band matches
the wide white printed line on the board. Again place the body of the di-
odes against the circuit board. Cut the leads from the bottom of the
board, saving one for use in the next step.
58. Refer to the parts layout on page 11 and locate the position of U3 at
the bottom to the left of S1. U3 will not be installed, instead, take one of
the leads you cut from D3 or D4 in the previous step and use it as a
jumper between the round and square pad locations as indicated on the
layout diagram.
The next component is the Infrared detector transistor Q1. It is the small clear
device with 2 leads and a green dot painted on it. Be sure to follow the in-
structions exactly for proper installation. Refer to Figure 1.
59. Look closely at Q1 and notice that there is a flat
area on the base and the lead next to it is shorter
than the other. Hold Q1 so the leads are pointed
toward you with the flat area/shorter lead to your
right. While holding the leads near the base of Q1
with a pair of needle nose plies bend one lead at a
time with your fingers, not the pliers, downward to a
90 degree angle as shown in Figure 1. The bend
should be about 0.1 inch from the base of Q1.
60. Install Q1 with the shorter lead/flat side to the
right, corresponding to the small white dot on the
board. The front rounded edge of Q1 should be
positioned close to, but not extended past, the top
edge of the circuit board. You may leave the body
of Q1 slightly off the board to allow adjusting it's position later.
The LED's are next. Make sure the flat area/short lead, of the LED matches
the white printed pattern on the board. Spacers are provided to position the
LED's at a precise distance above the circuit board. It is important that the
bodies of the LED's be installed so they are tight against the spacer and the
spacers are tight against the board so the LED's do not extend beyond the top
surface of the case when assembled. Insert the leads of each LED into a
spacer from the end with the large single opening. Place the LED leads thru
the correct holes in the board, bend the leads so the LED and spacer are held
firmly on the board and then solder the leads on the back of the board. You
may find that one or more of the LED's does not have a flat area in which case
the short lead is used as the orientation indicator.
WCT3  20
Figure 1