should beep 4 times and shutdown when the short is present. When the short is
removed, the booster should beep once within 2-3 seconds and return to normal
operation. If this does not happen, then you need to add more feeders.
See
Section 6.3.
21.7 The LT1 Tester
Check your LocoNet cables with the LT1 tester to be sure you don’t have any
cables that were made incorrectly.
See Section 5.8.
21.8 Decoder Won’t Respond
Is the loco on powered track?
If the
TRACK POWER
indicator on the DT402 is off or flashing, press
PWR
key and the
Y / +
key to turn on track power.
Use the “Quarter Trick” above to test for track power at several locations
around the loco. If there is not track power, check your layout wiring.
Can you select the loco on your throttle?
If not, is the loco in use by another throttle or is it part of a consist (do you see
a
cn
in the display when you try to select it)?
See Section 11.0.
Do the settings in CV29, the configuration register, match the com-
mand station output?
If your decoder is a 14-step decoder running on any Digitrax system using fac-
tory defaults, status editing will be needed for that decoder.
See Section 19.1.
Have you reset any CVs since the last time you ran the loco
If so, go back and change them to their default CV values and then try to run
the loco. It is possible to set acceleration so high that it will take 10 minutes
for the loco to start moving. To reset to factory default, see the Decoder
Manual for a full listing of CVs.
Was the loco running just before it stopped?
If the decoder is very warm it may be in thermal shutdown. Let it cool off and
see if it starts again. Also check for localized track problems. See Quarter
Trick on previous page.
Are there burn marks on the decoder?
You’ll need to send it in for repair!
If all else fails, reprogram the decoder address and reset CVs to
default values.
21.9 “Strange” Locomotive Lights
If you can’t control the operation of the lights in your locomotive with the
DT402 (in default 128, or 28 speed step mode), be sure that the decoder is pro-
grammed in advanced 28 speed step mode.
Do this by programming CV29 with a value of 06. See your Decoder Manual
for more information about programming decoders.
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