This installation is for N Scale Atlas GP15 and uses TCS ASD4 Decoder and was performed by TCS.
While this installation is very similar to other ASD4 and AMD4 installations, Atlas has chosen to attach copper clips to there lighting contact pads which will be vital to a good installation. These copper clips are an excellent choice for Atlas because they prevent slight differences in board thicknesses from affecting the quality of the installation, and prevent the board from bouncing loose.
Once the frame is split by unscrewing the two frame screws and the lighting board is freed (as shown above) one must remove the lighting board clips and prepare to attach them to the ASD4.
Attach the clips as shown above to the ASD4.
Lastly install the decoder excactly as the lighting board had been, reattach the sides of the frame, and place the shell back on. When you install the decoder be sure that there is adequate space between the motor tabs to prevent them from shorting out on each other, the pads, or the frame.
Important Soldering Tip
Please do not use any flux either liquid or paste on the mother board. Over time, the acidic properties of liquid or paste flux will begin eating away at the fiberglass PCB and will damage it. Use only Rosin-core solder or no-clean flux approved for electronics use.
TCS recommends the use of Kester "44" Sn63 Pb37, .015" diameter Rosin-core solder. Kester part number 24-6337-0007.
You can order this solder from the following retailers:
Digikey - PN:KE1110-ND
Techni-Tool - PN:488SO6775
Other solder tips
When stripping wire, only strip a tiny little bit of the insulation. Strip no more then a 1/64 of an inch. When the wire gets tinned with solder, the insulation will shrink back more. Try to not expose any more wire then half the length of the solder pad at most. In no case should solder or exposed wire wire ever be outside the boundary of the the solder pad you are attaching a wire to.
Click here for important information on properly Stripping and Tinning wire