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MTH GP38-2 Operating Instructions
BATTERY PROBLEMS
REMEDY
I get no sounds when the engine shifts between the
direction states.
The battery may be dead or needs charging. See the
Battery Backup section for more information.
After I turn off my transformer, my engine continues to
make sounds before quitting with a ding of its bell.
ProtoSounds continues to sound for approximately 10
seconds after power to the track has been shut off.
The sounds distort at low voltages.
The battery is insufficiently charged or dead. Follow
the recharging instructions found in the section entitled
“Self Recharging Battery Backup System”.
A repeating horn blast occurs after the power has
been shut down.
The ProtoSound module has detected a problem with
the electronics. Should such a warning occur,
disconnect the battery and contact MTH for return
authorization instructions.
RESET PROBLEMS
REMEDY
When I first turn the power on, the engine will not
begin to run. I have to turn the throttle off and then on
again to get the engine to operate.
This is normal behavior. When power to the track is
first turned on, ProtoSounds enters a “RESET” phase
at which time the engine undergoes a system check.
Power must be interrupted to get the engine into the
Forward Phase. See the section entitled “DCRU
Reverse Unit Operation” for more information.
Whenever I interrupt the power from RESET to enter
Forward, the engine goes back into RESET instead of
Forward. I know this occurs because the bell dings
twice.
Whenever ProtoSounds enters RESET after power
has been off for more than 15 seconds, the
microprocessor initiates a system check to determine
that everything is in working order. This system check
requires 2.2 seconds to complete during which time
the engine will play the diesel startup sounds. We
recommend that you don’t interrupt the power in
RESET until the diesel startup sounds have
completed. This will guarantee that the system check
will have been completed since the startup sounds
take longer than 2.2 seconds to play. If the problem
persists, we recommend that you operate the throttle
with a slower movement as you interrupt the power in
RESET and enter the Forward Phase
BRAKE SOUND PROBLEMS
REMEDY
When the transformer is throttled down, the sounds
won’t play.
The brake features has not been activated. See the
section on activating the brake feature for more
information.The throttle voltage setting on the
transformer is either not starting high enough or
ending low enough to trigger the brakes sounds. Try
increasing the throttle setting to 14 volts or higher
before throttling down to 8 volts or less.
The brake sounds continue to play even after the
engine stops.
The brake feature sound record lasts for three
seconds. With practice you can control how quickly
you should stop the engine to keep it in sequence with
the sound of the brake’s squeaking.
The brake feature was activated in neutral after the
engine was running in forward, but the brake sounds
would not play when triggered after the engine went
back into forward or reverse.
The brake feature will only remain enabled if it is
triggered in the first direction state you enter after
activating the feature in neutral. You cannot interrupt
the power twice to enter another direction state and
still have the brake feature active. Therefore, in order
to make the brake sound feature operate in forward,
you must first activate the feature in the neutral
position that occurs after the engine was in the reverse
state.
After triggering the brake sound and stopping the
engine in neutral, the engine begins making freight
yard sound effects.
After you trigger the brake sounds, you cannot stop
the engine in neutral and leave the track power on
without activating the freight yard sounds. If you don’t
want to hear the freight yard sounds after entering
neutral, turn the power off for three seconds to disable
the freight yard sound effects.
