MTHTrains GP38-2 DIESEL ENGINE Manuale utente

ELECTRIC TRAINS

MTH GP38-2 DIESEL ENGINE

OPERATING INSTRUCTIONS

Thank you for purchasing the MTH Electric Trains GP38-2 diesel

locomotive. This ¼” scale reproduction of the famous GP38-2 locomotive

measures over 15” in length and weighs almost 5 pounds. Despite its scale

size, the locomotive is capable of operating on O-31 3-rail track with most

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 is 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, theQuick Start Operating Instructions, found on page

3, should be read so that you understand the basics of the operating system.

Please note that some features are only found in the ProtoSound® equipped

engines and are marked as such.

MTH GP38-2 Operating Instructions

Table Of Contents

QUICK START - BASIC OPERATION(All 3-Rail Models) 3

PROTOSOUNDS ®OPERATINGINSTRUCTIONS 4

ProtoSound® DCRU® Reverse Unit Operation (All 3-Rail Models) 4

Horn Operation 5

Bell Operation 5

ProtoCoupler™ Operation 6

Cab Chatter Sounds 7

Squeaking Brake Sounds 7

Tips On Using The Squeaking Brake Sounds 8

Freight Yard Sounds (FYS) 9

Quick Overview On Activating and Triggering Freight Yard Sounds 9

Tips On Using FYS Features 14

Reverse Unit Lockout Control Functions 15

Locking The Engine Into Forward or Reverse 15

Unlocking The Engine 15

Self-Charging Battery Backup System 16

Replacing The ProtoSound® Battery 16

Manual ProtoSound® Volume Adjustment 17

USING “RESET" TO PROGRAM PROTOSOUNDS® 18

Entering RESET Options 18

Remotely Setting The Engine Volume 19

Programming For Squeaking Brake Operation 19

Programming For Horn In Neutral Operation 20

Programming For ProtoCoupler™ Operation 20

Turning Off Cab Chatter 21

Programming For FYS Operation 21

Activating Remote Lockout Control 22

Resetting All ProtoSound® Options To Factory Default 22

OIL & LUBRICATION INSTRUCTIONS 23

TRACTION TIRE REPLACEMENT INSTRUCTIONS 24

LIGHT BULB REMOVAL & REPLACEMENT 25

TROUBLE SHOOTING PROTOSOUND®PROBLEMS 26

ProtoSound® RESET Feature Chart 30

Transformer Wiring Chart 31

O-31 OPERATION 32

EXPLODED VIEW AND PARTS LISTS 33

SERVICE AND WARRANTY INFORMATION 36

HOW TO GET SERVICE 36

LIMITED ONE YEAR WARRANTY 36

MTH GP38-2 Operating Instructions

QUICK START - BASIC OPERATION

The MTH GP38-2 contains state-of-the art electronics with several built-in

automatic features for incredibly realistic operation. Despite these advanced

features, the GP38-2 is easy to operate with any compatible standard AC

transformer (see the compatibility chart on page 31).

The GP38-2 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. Once the engine is placed on the track, the

transformer throttle can be advanced. You will see that only the engine’s

lights come on and two dings from the sound system will chime followed

by the air compressor pump sounds. The engine does not run. This is

known as the RESET (see figure 1) 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.

RESET

Neutral

Reverse

Neutral

Forward

Figure 1: ProtoSound® DCRU® Cycle Phases

MTH GP38-2 Operating Instructions

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 diesel engine, CD-equivalent 16-bit digital sounds,

you get the following features:

1. ∗Built-In ProtoSound® DCRU® Reverse Unit * Authentic Diesel Horn Sound*

Authentic Diesel Bell Sound* Squeaking Brake Sound* Freight Yard Sounds*

Operating Remote Controlled ProtoCoupler™* Self-Charging Battery Back-Up

System With Automatic Battery Shut-Off* Remotely Controlled Reverse Unit

Lock-Out* Remotely Adjustable Diesel Engine Volume* Authentic Cab Chatter

Neutral Sounds* Authentic Diesel Engine Startup & Shutdown 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 fact, the power of this

microprocessor is the same as that of a 286 desktop computer! 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 2.2 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

MTH GP38-2 Operating Instructions

enter RESET, wait for the diesel startup sounds to begin and then slowly

turn the 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 Diesel Engine Volume Adjustment, Separate Bell Button Operation

(pre-programmed at the factory), Horn 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 2.2 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.

HORN OPERATION

Your Proto-Sound® equipped engine features a digital recording of a

diesel horn. The horn sound can be activated anytime the engine is in

forward or reverse by pressing the horn/whistle button on your transformer.

The horn will continue to blow as long as the horn/whistle button is

depressed. The horn will not function in RESET and must be configured

through a RESET option to allow the horn to work when the engine is in

neutral. See page 18 for information on horn programming in the Using

RESET To Program Proto-Sound® section of this manual

BELL OPERATION

Your Proto-Sound® equipped engine also features a digital recording of an

actual steam engine bell. The bell can be turned on or off by simply

pressing the Bell button on your transformer anytime the engine is in

forward, neutral or reverse. The bell will continue to ring until the bell

MTH GP38-2 Operating Instructions

button is depressed a second time. Note: The bell will not function in

RESET. .

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 GP38-2 ProtoSound®-equipped locomotive is equipped with two

coil-wound ProtoCouplers™ for remote uncoupling action. Because the

ProtoCoupler™ is controlled through ProtoSounds® 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

H H

Put Engine In Neutral

At Full Power

Press & Release

The Whistle Button Press & Release

The Whistle Button

Listen For The

Ca-Clunk Sound

See The Coupler Open

And Listen For The

Cha-Chusshh Sound

MTH GP38-2 Operating Instructions

speeds. Reduce the voltage

setting on your 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. 2.

For multiple heading purposes,

only one of the two ProtoCouplers™ will function at any one time. Use the

coupler direction switch as shown in Figure 3 on page 17 to select either the

front or rear coupler. Simply slide the switch toward the direction of the

coupler you want to make active.

DIESEL CAB CHATTER SOUNDS

Whenever your diesel locomotive is parked in Neutral, randomly played

“Cab Chatter” sound effects will occur every 2 to 30 seconds. There are a

total of four of these Cab Chatter sequences that capture authentic radio

transmissions between dispatcher and engineer. They are designed to play

at random intervals to eliminate repetitive and boring sequences though

there is no guarantee that you won’t hear the same message repeated two or

more times.

SQUEAKING BRAKE SOUNDS

Proto-Sound® 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 sound itself is a stored recording on the

Proto-Sound® 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

Lubricate

Proto-Coupler®

Knuckle

Figure 2: Lubricating The ProtoCouplers

Throttle Down From

High Voltage To Low Listen For The

Squeaking Brake Sounds

MTH Centipede Operating Instructions

brake sound is completed. Operators will find that coordinating the

movement of the throttle setting from 8 volts to off will allow the engine to

maintain its movement 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

Users will find the squeaking brake 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. However, you may find that your engine

continues to play the brake sounds once your engine comes to

a stop, or that the sounds stop 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 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.

MTH GP38-2 Operating Instructions

Operating Proto-Sound Freight Yard

Sound EffectsFreight Yard Sounds (FYS)

Proto-Sound® is equipped with operator controlled Freight Yard Sounds,

referred to as FYS. The FYS sequence is designed to simulate the arrival,

unloading, loading and departure of a freight train in a freight yard. This

easy-to-use feature allows you to play digitally recorded sounds of

freight yard operations 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 FYS is enabled.

Quick Overview- FYS Sounds

The following is a quick over view on how you can operate FYS.

The train on track moving Forward or Reverse direction.

BPress 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 FYS.

MTH GP38-2 Operating Instructions

Bell

Horn

Whistle

Direction

To Play FYS, Stop Train Direction.

This Can Be Done by Pressing the

DIRECTION Button or Cycling the

Transformer Handle.

At This Time the Train Will Stop in

Neutral.

In a Few Seconds, A Man Whistling

Plays, Followed by a Background

Noise.

STOP

Bell

Horn

Whistle

Direction

OR Change/Press Direction- The Train Will

Remain In Neutral. It Will Continue to

Play More Background Noises.

Bell

Horn

Whistle

Direction

Change/Press Direction- The Train Will Remain

In Neutral. You Will Hear a Double Air Release,

A Man Whistling Plays, More Background

Noises.

Bell

Horn

Whistle

Direction

Change/Press Direction- The Train Will Remain In

Neutral. You Will Hear Closing Doors, Horn Blast,

a Few Bell Chimes and Engine Departs in the

Direction the Engine First Stopped.

For more detailed FYS instructions, read the following.

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