Parallel Port 3 Axis CNC Driver, Opto-Isolated, Unipolar Steppers

Step 3 Jumpers, Oscillator and Sockets

Jumper points A - P need to be jumped.
( there is no jumpers O, I forgot about it)

Points labeled 1 are jumped to points labeled 2.
Example:
A1 goes to A2
B1 goes to B2
Ect.

Take a look at the diagrams below.

Take a lead clipping from the diodes (which is plenty thick)
Using a needle nose pliers bend the wire into a U shape large enough to bridge the gap.

When placing the jumpers ensure that you keep them away from any other holes or components.

Next Place the Oscillator in the XTAL, it goes in either way.
Make sure this gets a good shiny solder joint.

Sockets are Next

The 14 and 16 pin socket go in as pictured, line the notch on the socket up with the notch on the illustration.

Its not completely necessary but pin 6 on the 28-pin socket (RA4 on the PIC) (see image) should be removed, as there is a positive supply rail routed through it. And make sure to fill in its solder pad and hole with solder.

Then carefully line up all the pins into the holes and push down gently, watching to make sure no pins get flattened.