MTHTrains E-4 Hudson User manual

R
ELECTRIC TRAINS
MTH E-4 HUDSON
STEAM ENGINE
OPERATING INSTRUCTIONS
Thank you for purchasing the MTH Electric Trains die-cast E-4 steam
locomotive. This ¼” scale reproduction of the famous E-4 locomotive
measures over 27” in length and weighs over 11 pounds. Despite its scale
size, the locomotive is capable of operating on O-42 3-rail track with any
compatible AC transformer, (see page 31 for a complete list of compatible
transformers and wiring instructions) and is completely compatible with
most other 3-rail locomotives, rolling stock and accessories.
The locomotive and tender are equipped with several deluxe features that
are simple and fun to operate. Each feature is described among the
following pages which should be read before the engine is operated. For
those of you who can’t wait to get started, the Quick Start Operating
Instructions, found on page 3, should be read so that you understand the
basics of the operating system. Those features marked for 2 and 3-rail
engines are available in both types of engines. Features not marked as such
are only available in the 3-rail version.

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MTH E-4 Steam Engine Operating Manual
Table Of Contents
QUICK START - BASIC OPERATION(All 3-Rail Models) 3
PROTOSMOKE™ UNIT OPERATION 4
PROTOSOUNDS® OPERATINGINSTRUCTIONS 5
ProtoSound® DCRU® Reverse Unit Operation (All 3-Rail Models) 5
Whistle Operation 6
Bell Operation 6
ProtoCoupler™ Operation 7
Enhanced Neutral Steam Sounds 8
Squeaking Brake Sounds 8
Tips On Using The Squeaking Brake Sounds 9
Passenger Station Sounds (PFA) 10
Activating and Triggering Passenger Sounds 13
Tips On Using PFA Features 15
SPECIAL REVERSE UNIT OPTIONS 16
Locking The Engine Into Forward or Reverse 16
Unlocking The Engine 16
Locking The Engine Into Neutral 16
SELF-CHARGING BATTERY BACKUP SYSTEM 17
Replacing The ProtoSound® Battery 17
ProtoSound® Volume Adjustment 18
USING “RESET" TO PROGRAM PROTOSOUNDS™ 19
Setting The Engine Volume 20
ProgrammingForSqueakingBrakeOperation 20
Programming For Whistle In Neutral Operation 21
Programming For ProtoCoupler™ Operation 21
Adjusting Chuff Rate 22
Programming For PFA Operation 22
Activating Remote Lockout Control 23
ResettingAll ProtoSound® Options To Factory Default 23
OIL & LUBRICATION INSTRUCTIONS 24
TRACTION TIRE REPLACEMENT INSTRUCTIONS 25
LIGHT BULB REMOVAL & REPLACEMENT 26
TROUBLE SHOOTING PROTOSOUND®PROBLEMS 27
ProtoSound® RESET Feature Chart 30
Transformer Wiring Chart 31
SERVICE AND WARRANTY INFORMATION 36
HOW TO GET SERVICE 36
LIMITED ONE YEAR WARRANTY 36

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MTH E-4 Steam Engine Operating Manual
QUICK START - BASIC OPERATION
The MTH E-4 contains state-of-the art electronics with several built-in
automatic features for incredibly realistic operation. Despite these advanced
features, the E-4 is easy to operate with any compatible standard AC
transformer (see the compatibility chart on page 30). All models are
equipped with an operating smoke system that should be primed with
smoke fluid before operating. Adding 15 - 20 drops of fluid through the
smoke stack should be sufficient. If you choose to not prime the units with
fluid,turn the smoke unit switch located under the trailing truck to the
OFF position. (See Figure 3) This will prevent any damage from
occurring to the smoke unit when running the engine without a primed
smoke unit. For more information see the section on page 4 on Smoke Unit
operation.
The E-4 model is controlled by a
ProtoSound® DCRU® electronic reverse
unit. The reverse unit operates in the
same manner that all reverse units
function by using forward, neutral and
reverse states that are entered each time
the throttle is turned on and off or by
using the transformer direction switch (if
so equipped).
The reverse unit is designed to ignore dirty track, dead spots on switches
or minor short circuits without
disrupting the engine operation,
even at slow, prototypical speeds.
Before the engine can be operated
however, the reverse unit plug that
extends out of the tender must be
inserted into the receptacle at the back of the boiler cab as seen in Figure 1.
Once the plug is inserted, the throttle on the transformer can be advanced.
You will see that only the engine’s lights come on and that on ProtoSound
equipped engines, two dings from the sound system will chime followed by
the steam compressor pump sounds. The engine does not run. This is
known as the RESET state and is explained in more detail beginning on
Page 5. The ProtoSound® DCRU® will not power the motor until the
throttle is turned OFF and then ON again. At this point, the engine will
now function just like any other electronic or mechanical E-unit.
Figure 1: Pluggin in the tender harness
RESET
Neutral
Reverse
Neutral
Forward
Figure 2: ProtoSound® DCRU® Cycle Phases

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MTH E-4 Steam Engine Operating Manual
PROTOSMOKE™ UNIT OPERATION
(2 and 3-Rail)
The E-4 contains a self-powered smoke unit that outputs a steady stream of smoke through
the smoke stack on the roof of the engine. The ON/OFF switch located next to the trailing
truck must be in the ON position in order for the
smoke unit to function. See Fig. 2 below.
The smoke unit is essentially a small heating
element and wick which soaks up and then “cooks" a
mineral oil-based fluid that omits a harmless smoke.
The smoke is then forced out of the stack via a small
electric fan which runs at a constant speed. However,
the smoke intensity can be varied by increasing the
transformer voltage setting. The higher the setting,
the more intense the smoke output.
For best results, we recommend that you add 15 -
20 drops of ProtoSmoke™, Seuthe, LGB or LVTS fluid before you run the engine. If you
don’t choose to add the fluid, then the smoke unit switch should be turned off. Failure to either
add the fluid or turn the switch off could lead to damage to the smoke unit heating element and
or wicking. Add the fluid through the smoke stack hole as indicated in Figure 3. After adding
the fluid, gently blow into the stack to eliminate any air bubbles. Do not overfill the unit as
overfilling can cause the fluid to leak out and coat the interior engine components. When the
smoke output begins to diminish while running the engine, an additional 10-15 drops of smoke
fluid should be added or the smoke unit switch should be turned off. When storing the engine
for long periods of time, you may want to add at least 15 drops of fluid to keep the wick soaked
with fluid and prevent it from drying out. After removing the engine from storage, it is
advisable to add another 25 drops of fluid, letting the wick soak up the fluid for 15 minutes
prior to operation.
SMOKE UNIT MAINTENANCE
(2 and 3-Rail)
CAUTION: Operating the engine without smoke fluid
and with the smoke unit switch in the ON position can
damage your smoke unit wick, causing the wick to
become hard, blackened and unabsorbant around the
heating element. When this occurs, it may be difficult
for the wick to soak up the smoke fluid resulting in poor
or no smoke output. If that occurs, we recommend that
you inspect and/or replace the wick taking care to not
run the engine without fluid in the future. You can
inspect the wick to see if it needs replacement by
removing the smoke unit inspection cover from the body
as seen in Fig.4. After removing the chassis and
inspection cover screws lift the inspection plate away and inspect the wick. If the wick is
darkly discolored and hard, it should be replaced.
Proto-Smoke ON/OFF SWITCH
Figure 3: Smoke Unit Switch
SmokeUnit
CircuitBoard
MountingScrews
SmokeUnitFrame
MountingScrews
Figure 4: Inspecting The Smoke Unit

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MTH E-4 Steam Engine Operating Manual
PROTOSOUNDS® INSTRUCTIONS
The MTH ProtoSound® digital sound and train control system provides
the operator with unprecedented realistic operation on your model railroad.
In addition to actual E-4 engine, CD-equivalent 16-bit digital sounds, you
get the following features:
1. ∗Built-In ProtoSound® DCRU® Reverse Unit * Authentic Steam Whistle Sound*
Authentic Steam Bell Sound* Squeaking Brake Sound* Passenger Station
Sounds* Operating Remote Controlled ProtoCoupler™* Self-Recharging Battery
Back-Up System With Automatic Battery Shut-Off* Remotely Controlled
Reverse Unit Lock-Out* Remotely Adjustable Steam Engine Chuffing Volume* *
Authentic Steam Engine Neutral Sounds*
Each feature is described among the following pages. Though the system
is easy to use, we encourage you to read the instructions thoroughly.
PROTOSOUND® DCRU® REVERSE UNIT
As mentioned in the Basic Operating section, the engine is controlled by a
DCRU® reverse unit that contains the standard forward-neutral-reverse
states found on most reverse units. However, as described earlier, when
power is first applied to the track, the reverse unit begins in RESET or what
seems like a neutral state. Power must be interrupted again to get the
locomotive to enter the forward state. It is this first RESET state that gives
ProtoSound® its unique, remote controlled functions. The system will enter
RESET whenever power to the track is off for three or more seconds.
NEUTRAL will be referred to as the state between Forward and Reverse.
ProtoSounds® is equipped with a microprocessor, that, depending on the
amount of memory it is allotted, allows the user to utilize several remotely
activated functions. In the simplest terms, ProtoSounds® has its own
“Computer" controlling these functions. In order to access many of these
remotely controlled functions, the user must be in the RESET state to do so.
RESET is entered anytime power to the locomotive has been off for more
than 3 to 5 seconds. When the engine first enters RESET, the
microprocessor initiates a system check to determine if the system,
transformer and engine are operating correctly. This takes approximately 5
seconds during which you will hear the engine’s startup sounds begin. In
order for ProtoSounds® to properly initiate the system check, do not
advance the transformer throttle past 10 volts when you first enter RESET,
wait for the diesel startup sounds to begin and then slowly turn the

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MTH E-4 Steam Engine Operating Manual
transformer throttle to the off position and then back on again to enter the
forward phase. Interrupting the power too quickly may cause the system to
re-enter RESET (signaled by two dings of the bell). Should this happen,
wait longer before interrupting the power to enter the Forward phase.
ProtoSounds® comes with several programmable functions, including
remote Steam Chuffing Volume Adjustment, Separate Bell Button
Operation (pre-programmed at the factory), Whistle In Neutral Operation,
ProtoCoupler™ On/Off Control, Squeaking Brakes and Passenger Station
or Freight Yard Proto-Effects. Each of these features are described in more
detail later. You will notice that when in RESET, your engine will not
respond to the whistle button with a horn blast or continuous bell ringing.
In fact, when in RESET and the whistle button is depressed, only one single
bell chime will be heard each time the whistle button is pressed. If you
don’t want to configure or change your locomotive using any of these
programmable features, simply leave RESET and wait 5 seconds before
interrupting the power to put the engine in forward. After you leave
RESET, your engine will operate normally in all the direction states of
forward, neutral and reverse. Remember though, once power is turned off
for more than 3 seconds, the next time power is applied to the track, your
engine will be back in RESET.
WHISTLE OPERATION
Your E-4 ProtoSound-equipped engine is equipped with a digital recording
of a steam whistle. The whistle sound can be activated anytime the engine
is in forward or reverse by pressing the whistle button on your transformer.
The whistle will continue to blow as long as the whistle button is depressed.
The whistle will not function in RESET and must be configured through a
RESET option to allow the whistle to work when the engine is in neutral.
See page 20for information on whistle programming in theUsing RESET
To Program ProtoSounds® section of this manual.
BELL OPERATION
Your E-4 ProtoSound-equipped engine is equipped with a digital recording
of an actual steam engine bell. The bell can be turned on or off with any
separate bell button, like the Lionel® Railsounds® No. 5906 Bell Button,
by simply pushing the button. If you don’t have a separate bell button, the
bell can be controlled through your transformer’s whistle button whenever
the engine is in NEUTRAL. The bell will never ring continuously in
RESET (Remember NEUTRAL is the state between Forward and

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MTH E-4 Steam Engine Operating Manual
Reverse). Once the bell is turned on, it will continue to ring when the
engine is cycled into forward or reverse until you press the bell button or
re-enter NEUTRAL and turn the bell off with the whistle button.
In fact, because of ProtoSounds® state-of-the-art design, the
microprocessor remembers its last command. Therefore, unless you turn
the bell off before you quit running your train, the next time you run the
engine, the bell will come on. No matter whether you come back an hour
later or a year later, the bell will begin chiming once the engine enters one
of the three directional states.
To turn the bell on using the transformer’s whistle button, turn on power to
the track and cycle the engine into NEUTRAL. Turn the throttle to 8 volts
or less (any higher voltage will arm the ProtoCoupler™) and press the
whistle button. The bell should begin chiming. To turn the bell off, press
the whistle button again. If you want to keep the bell on while running the
engine, simply interrupt the power with the transformer throttle or the
transformer directional switch and enter forward or reverse.
PROTO-COUPLER™ OPERATION
Your E-4 ProtoSound-equipped locomotive tender is equipped with a
coil-wound ProtoCoupler™ for remote uncoupling action. Because the
ProtoCoupler is controlled through ProtoSound’s microprocessor, it doesn’t
require an uncoupling track section or modification to your layout to
function. The three simple steps below are required to operate the coupler.
1. Put your engine in NEUTRAL and turn the throttle all the way up.
2. Press the transformer whistle button to “Arm" the coupler. (You
will hear a “Clank").
3. After arming the coupler, press the whistle button again to open
the coupler.
When the knuckle fires open you will hear the buzzing of the coil
energizing and the sound of the air lines coming apart. It can best be
described as a CHA-CHUSHHH sound. The coupler doesn’t have to be
fired in NEUTRAL. Once the coupler is armed it can be fired in Forward,
Neutral or Reverse. However,
you may find that the coupler
doesn’t open when firing the
coupler at high speeds. Reduce
the voltage setting on your H H
Put Engine In Neutral
At Full Power
Press & Release
The Horn/Whistle Button Press & Release
The Horn/Whistle Button
Listen For The
Ca-Clunk Sound
See The Coupler Open
And Listen For The
Cha-Chusshh Sound

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MTH E-4 Steam Engine Operating Manual
transformer if this occurs and run
your engine at a slower speed
before firing the coupler. If the
coupler continues to open
erratically, try lubricating the
knuckle with light oil as indicated
in Fig. 5.
ENHANCED NEUTRAL
STEAM SOUNDS
The enhanced Neutral Sounds can be automatically heard whenever the
engine is in neutral. The sounds, which include Steam Pop-Off, Steam
Blow-Down, and Steam Injector sounds occur every 2 to 30 seconds. Each
of the three sequences will play at random intervals to eliminate repetitive
and boring sequences. While the sounds are selected to play randomly by
the microprocessor, there is no guarantee that you won’t hear the same
message repeated twice or more times.
SQUEAKING BRAKE SOUNDS
ProtoSound equipped engines feature the ability to play the sound of
squeaking brakes whenever your engine slows in speed. There are two
settings for activating the squeaking brake sounds. The default setting
allows the brake sounds to play while the engine is in forward or reverse
and the transformer throttle is lowered from a high setting to a low setting
(14 volts to 8 volts or less). The second setting requires that a bell button be
used to “arm” the brake feature and is explained in more detail in the
“Activating Passenger Sounds” section found later in this manual. The
sound itself is a stored record on the ProtoSounds software chip and will
always play the same brake sound for the same three second length each
time the voltage is reduced from high to low. Some practice may be
required to synchronize the playing of the brake sounds with the movement
of the engine. It is not
uncommon for the engine to stop
before the brake sound is
completed. Operators will find
that by coordinating the
movement of the throttle setting
from 8 volts to off will allow the
engine to maintain its movement
Lubricate
Proto-Coupler®
Knuckle
Figure 5: Lubricating The ProtoCoupler
Throttle Down From
High Voltage To Low Listen For The
Squeaking Brake Sounds

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MTH E-4 Steam Engine Operating Manual
while the brake sounds play. Note: The brake sounds will not be heard if
the transformer throttle is not set above 14 volts and/or not reduced below 8
volts.
TIPS ON USING THE SQUEAKING BRAKE FEATURE
Because the squeaking brake feature always plays for approximately 3
seconds, it is possible that the brake sounds will play longer or shorter than
what visually seems prototypical. You will find that by practicing with the
brake feature, you can quickly determine how quickly to throttle down and
what speeds and voltage settings give you the most prototypical braking effect.
Typical users will find the feature to be a very realistic way to simulate the
sound of an engine slowing down for curves, crossings or coming to a stop at a
station, side track or switch yard. As mentioned above, you will find that
initially your engine may continue to play the brake sounds once your engine
comes to a stop or that the sounds stop prematurely before the engine comes to
a complete halt. For example, if you simply run the engine and turn the throttle
off quickly, the brake sounds will likely continue playing even though the
engine has come to a complete stop. This annoying effect can be eliminated by
simply practicing with the brake feature. In no time, you will quickly learn
how to “feather" the throttle to keep the engine moving while the brake sounds
play and then turning the throttle off just as the sounds stop. Remember that
once you stop the engine, you should turn the throttle to the off position if you
don’t want to activate the Passenger Sounds feature described later in this
manual.
The ProtoSound squealing brake feature also has the ability to simulate the
squeal of wheel flanges when your train enters a curve at high speeds. The
same brake squealing sound plays, but you don’t need to reduce the transformer
throttle to activate the squealing sounds. To play the squealing sounds as wheel
flange sounds, trigger the brake feature using either method 1 or 2 above. Once
triggered set the transformer throttle setting at 14 volts or higher. As your
engine enters a curve (or anywhere on the layout) quic[ky “flick" your
transformer whistle button about half way. This “flicking" action causes the
transformer to release a short DC signal that ProtoSounds reads as an indicator
to activate the brake sounds. The engine won’t slow down even though the
sounds play. This simulates the wheel flange squeal of a train travelling
through a turn too quickly.
Note: Consistent activation of the wheel flange squealing is determined by the
condition of your transformer’s whistle button rectifier disc. Older rectifier
discs may need to be replaced in order to play squealing sounds.

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MTH E-4 Steam Engine Operating Manual
Operating Proto-Sound® Passenger Station
Sound Effects
Passenger Station Announcements (PFA)
Proto-Sound® is equipped with operator controlled Passenger Station
Sounds, referred to as PFA. The PFA sequence is designed to simulate the
arrival, disembarking, embarking and departure of a passenger train in a
Passenger Station. This easy-to-use feature allows you to play digitally
recorded sounds of Passenger Station sounds while your engine is parked in
the Neutral State. No additional wires or modifications are needed to enjoy
these amazing sound effects. The sounds themselves are randomly
“shuffled” by the Proto-Sound® computer. This gives the system the ability
to play the various sounds in a different order each time PFA is enabled.
Activating Passenger Sounds -Quick Overview-
The following is a quick overview on how you can operate PFA.
The train on track moving Forward or Reverse direction.
B
Press and Hold Bell Button For 3+
Seconds, Listen For a Horn Blast or
Air Release, then Remove your Finger
from the Button.
BPress Bell Button Again Quickly to Stop Bell Chime.
Your train is now ready for you to play the PFA.

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MTH E-4 Steam Engine Operating Manual
d
Bell
Horn
Whistle
Direction
OR
To Play PFA, Stop Train Direction.
This Can Be Done by Pressing the
DIRECTION Button or Cycling the
TransformerHandle.
At This Time the Train Will Stop in
Neutral.
In a Few Seconds, An Arrival Message
Plays, Followed by a Background
Noise.
STOP
d
Bell
Horn
Whistle
Direction
OR Change/Press Direction- The Train Will
Remain In Neutral. It Will Continue to
Play More Background Noises.
d
Bell
Horn
Whistle
Direction
OR
Change/Press Direction- The Train Will Remain
In Neutral. You Will Hear a Double Air Release,
Departure Message Plays More Background
Noises.
d
Bell
Horn
Whistle
Direction
OR
GO
Change/Press Direction- The Train Will Remain In
Neutral. You Will Hear Closing Doors, Horn Blast,
a Few Bell Chimes and Train Departs in the
Direction the Train First Stopped.
For more detailed PFA instructions, read the following.

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MTH E-4 Steam Engine Operating Manual
Activating Passenger Sounds (PFA)-Detailed PFA Instructions
Arming The Passenger Sounds Feature
Before the Passenger Station sounds can be heard, the feature must be
activated. The feature can be activated in one of two ways.
ARMING THE PASSENGER SOUNDS FEATURE
Before the passenger station sounds can be heard, ProtoSounds must
activate the feature so that the next time the engine enters the neutral
position, the sounds can play, The feature can be activated one of two ways.
Option 1: f you are using the Z-4000™ transformer, or any transformer
with a separate bell button controller, you can activate the feature by simply
pressing and holding the bell button for at least three seconds (it does not
matter if you are in forward, neutral or reverse). You will hear the bell turn
on and, after three seconds, you should hear a short horn blast or air release.
Once the horn blast or air release is heard, the bell button can be released.
The bell will continue to chime, so if you want to turn off the bell ringing,
simply press and release the bell button. If you were in neutral, interrupt
the transformer throttle
to enter the next
directional state (either
forward or reverse).
(Note: the PFA will
only play in the first
Neutral after it is
armed. You can not
interrupt the power twice to enter another direction and still have the PFA
active.) You can now trigger the sounds to begin playing when you next
enterNeutral.
Option2 If you do not have a separate Z-4000™ transformer (or separate
bell button available), you can activate the PFA using your transformer’s
whistle button control. To
arm the PFA, turn on the
transformer throttle and
cycle your engine into
Neutral (not RESET).
Once in neutral, set the
transformer throttle to 8
Put Engine In Neutral,
Forward or Reverse
Press & Hold
The Railsounds® Bell Button
For 3 Seconds
Listen For The
Start Of The Bell Sound
Listen For The
Air Release or Horn Blast
Sound After 3 Seconds
Put Engine In Neutral
At Low Power
Press & Hold
The Horn/Whistle Button
For 3 Seconds
Listen For The
Start Of The Bell Sound
Listen For The
Air Release or Horn Blast
Sound After 3 Seconds
H

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MTH E-4 Steam Engine Operating Manual
volts or less and press and hold the whistle button for at least three seconds.
You will hear the bell turn on and, after three seconds, you should hear a
short horn blast or air release. Once the horn blast or air release is heard,
the whistle button can be released. The bell will continue to chime, so if
you want to turn off the bell ringing, simply press and release the whistle
button. Interrupt the transformer throttle to enter the next directional state
(either forward or reverse). (Note: the PFA will only play in the first
Neutral after it is armed. You can not interrupt the power twice to enter
another direction and still have the PFA active.) You can now trigger the
sounds to begin playing when you next enter Neutral.
Triggering Passenger Station Announcements
Once the PFA feature has been activated, it will be played the next time the
engine enters neutral. At this point,
Proto-Sound® will take over control of
your engine, disabling the bell and
whistle button. In addition,
Proto-Sound® reconfigures the way the
reverse unit functions during the
operation of the PFA feature. This
forces the engine to leave your
Passenger Station in the same direction as it arrived. The following
operator controlled “Events” control the PFA’s actions and sounds. (Note:
The direction states shown assume the PFA is entered from forward. If
entering the Passenger Station in reverse, the direction states shown will
be reversed.)
Event 1: Interrupt the transformer throttle
to cycle the engine from forward into
neutral. If the throttle was at 14 volts or
higher, the squeaking brakes sound will play.
Once the engine is stopped, the throttle must
be turned on to keep it in the neutral state.
Note: Failure to turn the throttle back on
within 3 seconds of leaving forward will
disable PFA and shutdown Proto-Sound®.
The next time power is turned on, the engine will be in the RESET
position. See page 19 for additional information on RESET. If the bell
was not turned off after arming PFA, it is now turned off automatically.
After entering neutral, Proto-Sound® will immediately play a horn blast or
Put Engine In Neutral
At Low Power
Listen For Air Release Sound
And PA Arrival Message
Listen For 2
Air Release Sounds
Interrupt Throttle To
Enter The Next Phase

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MTH E-4 Steam Engine Operating Manual
an air release sound, followed approximately 2 seconds later by an Arrival
Announcement. Following this arrival announcement, the sounds of doors
opening and the conductor saying “Watch your step” is heard. At this point,
various Passenger Station sounds can be heard, including passenger
footsteps, muffled voices, baggage being moved about and whistling for a
taxi. Additionally, several conductor highlights will be heard in the
foreground.
Event 2: Interrupt the transformer throttle
again to cycle the engine from neutral into
reverse. In order to have the engine leave the
yard in the same direction it entered
Proto-Sound® disables the motors in this
reverse state to prevent the engine from
running backwards. PFA confirms reverse is
entered by playing the conductor saying
“Baggage to the right/left.” Once this
highlight is played, the Passenger Station sounds heard in Event 1 will
continue to play.
Event 3: Interrupt the transformer throttle again to cycle the engine from
reverse back to neutral. PFA confirms that the engine is now in neutral by
sounding two quick air releases. This is followed approximately two
seconds later by a Boarding Announcement message and continued
Passenger Station sounds. Conductor highlights, such as “Welcome
aboard” and “Tickets please” will play randomly.
Event 4:Interrupt the transformer throttle again to complete the PFA
feature and cycle the engine into forward. PFA confirms it has entered
forward by playing the conductor’s call
“All Aboard!” and the sound of the
passenger car door closing. Within two
seconds, the whistle will sound two short
blasts (three if entering reverse), and the
bell will begin to chime. After a few
chimes of the bell, the engine will begin
moving in forward with the bell continuing
to ring. A few seconds later, the bell will
turn off, and the engine will resume normal
operation. Note: When entering Event 4, it is important to set the
transformer throttle at a high enough setting that the engine will begin to
move when the motors are activated. However, the throttle should not be
too high for the engine to maintain a safe operating speed.
Listen For Conductor
To Say ...
Interrupt Throttle To
Enter The Next Phase
Listen For The
Conductor To Say ...
Interrupt Throttle To
Enter The Next Phase

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MTH E-4 Steam Engine Operating Manual
TIPS ON USING THE PFA FEATURES
PFA is a unique feature of Proto-Sound® that is completely controlled by the
operator. You decide how, when or if you want to utilize the feature. By
reviewing the following tips, you should find solutions or suggestions to the
various operating scenarios you might encounter when using PFA.
Tip #1: You can escape the PFA sequence by interrupting the transformer
throttle before the man’s whistle plays in Event 1 (neutral).
Tip #2: You can exit PFA at anytime by turning the transformer throttle Off
for 15 seconds.
Tip #3: You do not have to be in Forward to utilize PFA. For example, if you
activate the PFA feature while in Reverse, your train will leave the station/yard
in the same reverse direction that it arrived in.
Tip #4: You can use PFA even if you are double-heading with another engine
regardless of whether the second engine is equipped with an PFA programmed
Proto-Sound® module. If the second engine isn’t equipped with PFA, the only
thing to remember is that you not to turn up the transformer throttle very high
when entering Reverse in Event 2. If the throttle is set too high, then the
second locomotive will begin vibrating on the track as its motors will be
turning in reverse. If your second engine is equipped with PFA, you may want
to disable the PFA when used in double-headed operations. To disable PFA,
see the section on programming RESET functions on page 26 of this manual.
Tip #5: You can leave any of the event stages at any time by simply
interrupting the transformer throttle. Any sound effects programmed to play in
that event will simply not occur. The only exceptions are Event 1 and Event 4.
In Event 1, interrupting the throttle has no effect on PFA until after the man’s
whistle has completed and the freight car doors have opened. In Event 4, you
cannot interrupt PFA until after the engine begins to move. Interrupting the
throttle before the engine begins to move has no effect on the locomotive’s
operation.

16
MTH E-4 Steam Engine Operating Manual
Special Reverse Unit Options
Reverse Unit Lockout Operation
For operators who wish to lock their engine into a single direction,
Proto-Sound’s® unique design eliminates the need for a lock-out switch
on the locomotive. This will allow users to run the engine on layouts
equipped with block signals or stop stations that would normally cycle
the engine back into neutral.Note: The feature must be first turned on
by accessing RESET Feature 40 (See page 23).
Locking the Engine into Single Direction Operation
Cycle the transformer throttle so that your engine is operating in the
direction you wish to lock it in (forward, neutral or reverse). With the
throttle set to approximately 8 volts, press and hold the horn/whistle
button. While holding the horn/whistle button, turn the throttle OFF,
then release the horn/whistle button. After 2 seconds, you will hear a
short whistle blast. IMMEDIATELY turn the throttle back on. The
engine is now locked, and will continue in the previous direction
whenever power is applied to the track.
Unlocking the Engine
With the throttle set to approximately 8 volts, press and hold the
horn/whistle button. While holding the horn/whistle button, turn the
throttle OFF, then release the whistle button. After three seconds, a
single bell will be heard indicating that the engine is unlocked. When
power is again applied, the engine will enter RESET and perform as
normal.
NOTE: When locking the engine in the Forward or Reverse positions,
the horn/whistle button will blow the horn/whistle. But when locking the
engine into the NEUTRAL position, the horn/whistle button may turn on
or off sounds of the bell. Remember, the horn/whistle doesn’t blow in
NEUTRAL (unless you programmed it to do so using Reset Feature 25 -
see page 24 for details), only the bell rings.

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MTH E-4 Steam Engine Operating Manual
SELF-CHARGING BATTERY BACKUP
Proto-Sound® state-of-the-art design includes a self-charging battery
backup system for improved performance at any speed. The battery ensures
that power to the sound system will remain on during directional changes,
while setting RESET options or when travelling over spots of dirty track
and switches. The self-recharging battery backup system is automatically
turned on or off whenever track power is turned on or off.
Proto-Sound® contains a warning alarm if the battery backup system fails
to automatically disengage when track power is turned off. Should the
backup system fail, you will hear a repeating horn blast indicating that this
has occurred. Should this happen, unplug the battery from the
Proto-Sound® module (to prevent the battery from being run down) and
contact MTH for instructions on returning the train for repair.
REPLACING THE PROTO-SOUND® BATTERY
The Proto-Sound® battery is a special NiCad 7-cell, 8.4v battery -NOT the
6-cell, 7.2v battery found in most convenience stores. The 6-cell NiCad is
NOT recommended for use with Proto-Sound® applications. The battery is
continually charged from the track when power is applied and should last
for up to five years. In addition, the NiCad battery is a dry battery and
should not leak or cause any damage to your locomotive during its lifetime.
If you notice that the sounds seem distorted or garbled at low voltages or
become silent when power from the transformer is shut off, the battery may
be going bad. Before replacing the battery, you should put the engine in
NEUTRAL and leave the transformer throttle set at about 12 volts for 15
minutes. This should temporarily recharge the battery. If the garbled or
distorted sounds are reduced, then your battery charge has worn down. You
can give your battery a full charge by leaving the engine ON in the
NEUTRAL position and the transformer throttle set at about 12 volts for 6
hours.
If you need to replace the battery, they are available from MTH
Proto-Sound® Electronics at 7020 Columbia Gateway Drive, Columbia,
MD 21046-1532. A standard 9v alkaline battery can be substituted as a
temporary fix, but, since alkaline batteries can’t take a charge, it will
eventually wear down.

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MTH E-4 Steam Engine Operating Manual
MANUALLY ADJUSTING THE
PROTO-SOUND® VOLUME
Your ProtoSound® system has two types of volume adjustment. A
manual turn knob on the bottom of the chassis (See Fig. 6 below) allows
you to control all the sounds in the system and a remote control “RESET"
option (Option # 6), allows you to control the volume level of the engine
sounds remotely from the transformer. Turning the volume adjustment
knob clockwise will increase the volume and counterclockwise will lower
the volume of all sounds; bell, horn, engine sounds, Cab Chatter, etc. For
information on operating the RESET volume adjustment option, see the
section entitled “Programming ProtoSound RESET Options” on the
following pages.
Proto-Sound® Volume Adjustment Knob
Figure 6: Adjusting The ProtoSound® Volume

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MTH E-4 Steam Engine Operating Manual
USING “RESET" TO PROGRAM
PROTOSOUNDS®
Proto-Sound® is equipped
with
several programmable
features which are
accessed in the RESET
state by moving the
transformer throttle up and
down between full voltage
and low voltage (8 volts) without shutting the transformer off completely.
Each time this is done you advance, one feature at a time, through the
available options. An air-release sound is heard each time the throttle is
advanced and returned. In addition, there are special sounds to tell you
what RESET position you are in.
For example, if you want to select Feature 2, put the engine in RESET, and
move the throttle up and down from full throttle to low two times. After the
second advance, you will hear two “clinks" indicating that the computer is
now in Feature 2. Advance the throttle again and you will hear three
“clinks" for Feature 3. Advance it two more times and you will hear a
“clank" indicating that you are now in Feature 5. Advance the throttle two
more times and you will hear a “clank" and two “clinks" indicating Feature
7. ((5 throttle advancements = 1 clank) + (2 throttle advancements = 2
clinks)). “Clank” + “Clink" + “Clink" = Feature 7. You can advance the
throttle as quickly as you like and the computer will still remember the
number of times the throttle is advanced by playing back the number of
“Clinks" and “Clanks" to confirm the feature you’ve selected.
In RESET Mode
Move The Throttle
Up & Down From
High Voltage To Low
2 Times
Advance The Throttle
Up & Down From
High Voltage To Low
4 More Times
Listen For The
2ClinkSounds
Listen For 1 Clank
And 1 Clink Sounds

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MTH E-4 Steam Engine Operating Manual
Remotely Adjusting The Engine Volume -Reset Feature 6 – (1
Clank, 1 Clink)
Reset Feature 6 allows you to change the volume setting of the chuff sounds
without affecting the volume of other sounds, such as whistle, bell,
enhanced neutral sounds, etc. To use, cycle to Reset 6 and press the
Horn/Whistle button. A
single bell will play, and
the chuff will begin at
the current volume.
Each time the
Horn/Whistle button is
pressed, a bell will
sound and the volume
setting will cycle down
to the next level. The levels available are 100%, 50%, 25%, and 0%. After
0%, pressing the horn/whistle button again will return the chuff to 100%.
When the desired level is reached, lock the changes by interrupting the
throttle and cycling the engine into forward
Programming For Squeaking Brake Operation- Reset Feature 45
–(9 Clanks, 0 Clinks)
Reset Feature 45 allows you to determine if and how the Squeaking Brakes
recording will be activated. To use, cycle to Reset 45 and press the
Horn/Whistle button. The
engine will play a series
of bells. This indicates
the current setting. Each
time the Horn/Whistle is
pressed, Proto-Sound®
will cycle to the next
available setting and
provide the appropriate
bell indicator. The settings for Reset 45 are 1 Bell = On Demand (Enabled
when PFA is activated), 2 Bells = Always On, 3 Bells = Off. When the
desired setting is reached, lock the changes by interrupting the throttle and
cycling the engine into forward.
In RESET Mode
Move The Throttle
Up & Down From
HighVoltageToLow
6 Times
Listen For 1 Clank
And 1 Clink Sounds
Push The Horn/Whistle Button
Until You Reach The
Setting You Desire
Interrupt The Throttle
To“Lock-In”
The Volume Setting
H
In RESET Mode
Move The Throttle
Up & Down From
High Voltage To Low
45 Times
Listen For 9 Clank
And 0 Clink Sounds
Push The Horn/Whistle Button
Until You Hear The
Appropriate # Of Dings
Interrupt The Throttle
To “Lock-In”
The Volume Setting
H