Atlas C420

Scale:
N Scale


This installation uses the following decoder:


This installation is for N Scale Atlas C420 and uses TCS AMD4 Decoder and was performed by TCS.

First remove the shell by squeezing it on either side of the locomotive and gently rocking it back and forth until it slips off the frame.
First remove the shell by squeezing it on either side of the locomotive and gently rocking it back and forth until it slips off the frame.


Now remove the screws from the chassis and separate all of the sections of the locomotive shown below. Do not remove the drive train if possible.
Now remove the screws from the chassis and separate all of the sections of the locomotive shown below. Do not remove the drive train if possible.


Next apply a small amount of solder to the power pick-up pads of the AMD4. NOTE: do not add too much solder or the decoder will not fit in the frame.
Next apply a small amount of solder to the power pick-up pads of the AMD4. NOTE: do not add too much solder or the decoder will not fit in the frame.


Next slip the decoder between the two halves of the frame and reassemble. NOTE: make sure that the motor tabs line up properly with the motor pads on the decoder.
Next slip the decoder between the two halves of the frame and reassemble. NOTE: make sure that the motor tabs line up properly with the motor pads on the decoder.




Finally, reattach the shell and you are ready to run your locomotive on DCC.
Finally, reattach the shell and you are ready to run your locomotive on DCC.





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