Micro Encoder Assembly

Micro Encoder Assembly

Page 3
 
After putting the socket pins in the two PC cards following the directions in the assembly manual. Take the small piece of glass and place on top of one of the cards and turn it over keeping the socket pins from falling out. Solder every fourth pin. Turn the card back over and inspect for pin straitness.
Flip the card and finish soldering the rest of the pins. Repeat for the second card.
Inspect all pins for straitness and all solder joints for acceptable quality. Fix anything that does not pass inspection.
Take your needle nose pliers and grab a corner of the plastic strip holding the pins together and pull off leaving the socket pins behind.
 
Get the CPU board, locate the three IC sockets, the J-1 to J-4 header pins, and a test point clip. (It looks like a small cotter pin with a pink collar) Install and solder the J-1 and J-3 headers noting orientation. Install J-2 and J-4 making sure they both sit flush to the PC Board. Install the square 68 pin CPU socket noting orientation and make sure it sits flush. Install the 28 pin narrow IC adapter at U-27. The last 28 pin socket needs to be modified by removing the front cross rail with the notch in it.
Solder a few pins, turn over and inspect for the socket sitting flush. Finish soldering the rest of the pins. Inspect for acceptable solder joints. Get the A/D board and the two remaining test point clips. Install one at the hole marked AGND and the other at the hole marked 4.0000v. Solder both clips.