SoundTraxx SoundCar Users Guide - Manual (Page 14)

Tsunami SoundCar User’s Guide Page 10
via a change in sound level if the decoder is unlocked. Begin by setting
CV 15 to 0 and CV 128 to 0. If the volume level does not fall to 0, the decoder
is locked. Next, set CV 15 to 1 and reprogram CV 128 to 0. Repeat this
process until you find a value for CV 15 that results in the volume falling to 0
as reprogrammed into CV 128.
Troubleshooting Tip
Be aware that even if you do not plan on using the CV lock feature, it can
still be accidentally activated if CV 15 or 16 is programmed to a non‑default
value. If your DSD is otherwise working properly (i.e., making sound and
responding to function commands) but has stopped accepting CV changes,
run through the “If You Forget the Lock Code” procedure to determine if the
decoder is locked.
Resetting the CVs or Starting Over
Occasionally, something goes wrong and the SoundCar DSD will not respond
as expected. Usually this is caused by one or more CVs being programmed
to an unacceptable value. CVs can easily be reset to their factory default
values as follows:
1. Place the model on a powered section of track. Using either Service
Mode or Operations Mode, program CV 8 to 8, or CV 30 to 2.
2. If the model is already on the mainline, cycle power to the DSD by
turning power to the track off and then back on again.
Note: If you have a SoundTraxx CurrentKeeper™ or other device
intended to maintain power to the decoder, remove power for at least
1 minute to ensure that it is fully discharged.
3. If sounds start immediately after power is restored, the decoder did
not reset. Repeat Steps 1 and 2.
4. Approximately 6 seconds after power is restored, startup sounds
should begin, and the headlight and backup light (if connected) will
blink 16 times, indicating that CVs were successfully reset.
5. Your SoundCar DSD should now respond to primary address 3 just
like it did out of the package.
6. If you cannot get the decoder to reset, make sure it has not been
inadvertently locked (see “Locking and Unlocking CVs” for more
information).
Basics of Programming