Automatic Sound Effects
®
Certain Proto-Sound 3.0 sound effects automatically play in programmed conventional
mode conditions:
• Squealing Brakes play any time the engine’s speed decreases rapidly.
• Cab Chatter plays at random intervals when the engine idles in neutral.
• Engine Start-up and Shut-down sounds play when the engine is initially
powered on or is powered off for five seconds or more.
Reset to Factory Default
To override the settings you currently have assigned to the engine and reset it to its factory
defaults, while in Neutral tap the Horn button quickly once, followed by five quick taps of
the Bell button, allowing approximately ½ second to lapse between each quick button
press. Two horn blasts will indicate that the engine has made the change.
Reset
Two Horn Blasts
(indicates change is made)
Repeat to Return
to Normal Condition
Horn
Place
Engine in
Neutral
=
Bell
Bell
Bell
Bell
Bell
Conventional DC Operation
Your MTH locomotive will operate on conventional DC track voltage also. However,
functions such as sounding the horn, ringing the bell and the TAS sounds cannot be
initiated in conventional DC. Only the diesel engine sounds, smoke, squealing brakes and
idle sounds will function.
Operation of your MTH Proto-Sound® 3.0 engine in conventional DC is very similar to
operating a conventional AC engine. As you increase track voltage, engine speed increases.
As the track voltage is decreased, engine speed is decreased. When track voltage polarity is
reversed using the polarity or direction switch on the power pack, the engine will run in
the opposite direction. The electronics in your MTH Proto-Sound® 3.0 locomotive are
designed to slowly change direction without a need to change the throttle, if you so desire.
Just change the polarity switch on your DC power pack and the engine will gradually come
to a stop and then automatically begin traveling in the opposite direction. The speed will
build up to the same speed that the engine was going in the previous direction. When
power is first applied to the locomotive, the engine’s sounds will start up when the track
voltage reaches about 8 VDC. To get your locomotive moving, after the startup sounds
have finished and the locomotive is idling, slowly increase the track voltage until the
locomotive is traveling at the desired speed.
NOTE:
If you apply more than 9.0VDC to the engine at start-up the engine will not
move. This is normal. We refer to this as “Anti-Jackrabbit” and this feature prevents
your model from taking off at high track voltages. Simply lower the track voltage down
below 9.0VDC and then back up to get your engine moving. This applies only when you
start up your engine.
RailKing PCC Electric Street Car w/ Proto-Sound® 3.0
12
