Counter Wiring:
1) A four inch piece of 4 conductor ribbon wire is provided to wire the counter to the circuit board. The color of the wires
shown does not necessarily correspond to the
ribbon wire in your kit.
2) The four different wires that make up the
ribbon have to be separated from each other for
one inch at each end.
3) (fig 5) By inserting the tip of the X-Acto into
the space between the colored wires and gently
pulling the ribbon wire away from the knife you
can separate the wires as shown.
4) Strip 1/4" and tin both ends of all four wires.
5) (fig 6) As delivered, pins A, B, C, D on the counter are straight up and
down and are very close together, which can make soldering to them
difficult. With your finger, very gently bend the pins to separate them
to provide more working room.
6)
IMPORTANT !
- Cover the back side of the of the counter (where its’
circuit board is exposed) with 3 or 4 layers of electrical tape) to guard
against any solder dripping or spatter that may occur in the next 2
steps.
7) Carefully tin each of the four pins on the left side of the counter.
8) Solder the four wires from the ribbon, one each, to a counter pin.
Remove the protective electrical tape.
9) The ribbon wire is now soldered to the circuit
board as follows:
Wire Assignments:
Wire from pin A to pad 13 on circuit board
Wire from pin B to pad 12 on circuit board
Wire from pin C to pad 11 on circuit board
Wire from pin D to pad 10 on circuit board
10) Tuck the excess ribbon wire between the
circuit board and the cover. Place a piece of tape
over the ribbon as shown (fig8) to secure it.
11)
Important !
- Make sure that the pins on the
counter do not come into contact with each
other.
Speed Control Pot Wiring
1) Tin Lugs 1 through 4 on the control pot. (Lug 5 is not being used)
2) Cut a 1 ½ inch piece of black wire, strip 1/4" from each end and tin. Solder the wire from
Lug 1 to Lug 3.
3) Cut an 8 inch piece of green wire, strip 1/4" from each end and tin. Solder one end to Lug 2.
4) Cut an 8 inch piece of red wire, strip 1/4" from each end and tin. Solder one end to Lug 4
5) Twist the green and red wires together along their length to keep them paired.
6) Set the unit aside.
7) Make sure that after soldering and upon assembling the machine, that none of the lugs
bend and come into contact with the pot body.
Fig 5
Fig 6
Fig 7
Fig 8
Fig 9
