-8-
WIRE THE TRANSFORMER TO THE PC BOARD
Cut the blue, red, white and yellow wires on the transformer so they are 3” long and strip the insulation off of
the ends to expose 1/4” of bare wire. Solder the wires to the PC board starting with the top yellow wire as shown
in Figure I.
Yellow (F) wire to point F on the PC board
Blue (A) wire to point A on the PC board
Red (C) wire to point C on the PC board
White (E) wire to point E on the PC board
Red (D) wire to point D on the PC board
Blue (B) wire to point B on the PC board
Yellow (G) wire to point G on the PC board
Yellow (F)
Blue (A)
Red (C)
White (E)
Red (D)
Blue (B)
Yellow (G)
Figure I
3”
Mount U2 and U4 to the right side panel as shown in
Figure H. Insert the pins of each IC into the holes in the
PC board. Then, with the hardware shown in Figure FA,
attach each IC to the side panel. Solder the pins of the ICs
to the PC board.
U4 - LM7912
U2 - LM7812
Mount the transformer with the black wires as shown in
Figure H. Use the two 8-32 x 3/8” machine screws, #8
lockwashers, and 8-32 nuts.
Transformer mounted
#8-32 x 3/8” Machine Screws
6-23 Nut
IC
* Silicone Grease
Mica
Side Panel
Insulator Washer
6-32 x 5/16”
Machine Screw
* Take a small amount of silicone grease from the
packet and apply it with a toothpick onto the back of
the ICs.
Figure FA
Mica
Yellow (G)
Blue (B)
Blue (A)
Red (D)
White (E)
Yellow (F)
Red (C)
Right Side
U4
U2
7812
7912
Figure H
Black Wires
8-32 Nut
#8 Lockwasher
#8 Lockwasher
8-32 Nut
Transformer
Note:
Make sure that the transformer
does not touch U4.
