MTHTrains Proto-Sound 2.0 Digital Command System Installation Manual

STEAM LOCOMOTIVE UPGRADE KIT

INSTALLATION MANUAL

4th Edition

Compatibility

This Proto-Sound 2.0 Steam Locomotive Upgrade Kit is compatible with any AC or DC
Powered locomotive equipped with a DC can motor and motor flywheel. The locomotive
must be large enough to house the electronics. The instructions herein are generic in
nature and will not provide the installer with specific installation details for specific
locomotives. Consult the individual item’s operator’s manual for specific instructions on
how to disassemble the locomotive prior to installing the upgrade kit.

WARNING: This product is not covered by a warranty unless installed by an M.T.H.
Authorized Conversion Center.

www.mthtrains.com

PLEASE READ BEFORE USE AND SAVE FOR REFERENCE

Table of Contents

WARNING: This product is not covered by a warranty unless installed by an M.T.H.

Authorized Conversion Center.

Contents Of The Kit............................................................................................ 3

Required Tools...................................................................................... 6

Locomotive Inspection & Review.......................................................................7

Preparing The Tender For The Upgrade.......................................................... 8

Installing The Ps-2 Components Into The Tender........................................... 9

Mounting The Ps-2 Board..................................................................... 10

Installing The Proto-Coupler................................................................. 13

Coupler Installation............................................................................... 14

Optional Front Proto-Coupler Wiring................................................... 15

Installing The Tender Harness............................................................... 16

Soldering Speaker Connections.............................................................19

Installing The Battery & Volume Pot.................................................... 20

Preparing The Locomotive For The Upgrade...................................................22

Determing The Locomotive Motor Type...............................................23

Installing The Tach Reader Bracket...................................................... 23

Installing The Flywheel Tach Tape........................................................24

Mounting The Tach Reader To The Tach Bracket.................................25

Installing The Ps-2 Harness Into The Locomotive........................................... 26

Mounting The Ps-2 Harness Connector................................................ 26

Connecting Motor, Ground & Pickup Wires........................................ 27

Installing Headlight Into RailKing Steam Engines............................... 28

Connecting The Ps-2 Harness To The Smoke Unit.............................. 29

Other Proto-Smoke Circuit Wiring Methods........................................ 30

Connecting Power To The Constant Voltage Board...............................31

Wire Management/Short Circuit Prevention......................................... 32

Testing The Ps-2 Installation...............................................................................33

Loading Proto-Sound 2.0 Files Into Locomotive...............................................34

Proto-Sound 2.0 Operation Instructions............................................................37

Conventional Operation.........................................................................37

Self-Recharging Battery.........................................................................43

Troubleshooting.....................................................................................44

Service & Warranty Information.......................................................................47

Warranty Coverage & Service Options................................................. 47

This product may be protected by one or more of the following patents: 6,019,289; 6,280,278;
6,281,606; 6,291,263; 6,457,681; 6,491,263; 6,604,641; 6,619,594; 6,624,537; 6,655,640.
©2010, M.T.H. Electric Trains®, Columbia, MD 21046

CAUTION: ELECTRICALLY OPERATED PRODUCT:

WARNING: When using electrical products, basic safety precautions should be observed, including the following:

Read this manual thoroughly before using this device.

l M.T.H. recommends that all users and persons supervising use examine the hobby transformer and other electronic equipment

periodically for conditions that may result in the risk of fire, electric shock, or injury to persons, such as damage to the primary cord,
plug blades, housing, output jacks or other parts. In the event such conditions exist, the train set should not be used until properly
repaired.

l Do not operate your layout unattended. Obstructed accessories or stalled trains may overheat, resulting in damage to your layout.
l This train set is intended for indoor use. Do not use if water is present. Serious injury or fatality may result.
l Do not operate the hobby transformer with damaged cord, plug, switches, buttons or case.

Recommended for Ages 14 and up. Not recommended for children under 14 years of age without adult supervision. As
with all electric products, precautions should be observed during handling and use to prevent electric shock.

Contents Of The Kit

A) Proto-Sound 2.0 (Ps2) board (1)
B) Ps2 plastic mounting bracket (1)
C) Tender harness (1)
D) Ps2 metal heat sink bracket (1)
E) Proto-Coupler, long (1)
F) Back-up light (1)
G) Tender Marker Light Harness w/2
LEDs (1)
H) Locomotive Harness w/Tach Reader
I) Speaker, 4 ohm 50mm diameter (1)
J) Headlight (1)
K) Tach reader brackets (2)
L) Tach tape stripes (4)
M) AA battery pack (1)
(Charge before use)

N) Screws M2 x 4 mm (2)
O) Screws 6/32 x 6 mm (3)
P) Nuts 6/32 (3)
Q) Screw 6/32 x 8 mm (1)
R) Plastic Wire Sleeve
(for wire managment) (1)
S) Shrink tubing (1)
T) Foam tape (1)
U) Wire Ties (7) (6) 4”, (1) 7”
V) Inductor (1)
W) Headlight Grommet
X) Battery Recharging Port/Harness
Y) Battery Recharging Port Hardware
(2) Screws M3 x 12, (2) Nuts M3, (2)
Spacers
Z) Locomotive Harness Spacer/Insulator
AA) Pittman Tach Reader Screws (2)
EE) Coupler Insulator

(AA)Pittman Motor Tach
Bracket Screws

(IA-0000375)

PS-2 Upgrade Kit Installation Guide

3

(B)Ps-2 Plastic Mounting
Bracket (IH-0000391)

(A)Proto-Sound 2.0 Circuit Board

AE-0000010, AE-0000011

(C) Tender Wiring Harness

(BC-1000005)

(E) Proto-Coupler

(DD-0000032)

(G) Tender Marker LEDs

(CC-0000062)

(D) Ps-2 Metal
Heat Sink Bracket

(IH-0000390)

(F) Tender Backup Light

(CF-0000030)

(H) Locomotive Wire
Harness w/Tach Reader

(BC-1000003)

(EE) Coupler Insulator

(ID-0000123)

(J) Locomotive Headlight

(CA-00000078)

(K) Tach Reader

Mabuchi / IDG
(IH-0000389)

Pittman
(IH-0000154)

(L) Tach Tape

(BE-0000151)

PS-2 Upgrade Kit Installation Guide

4

(I) Speaker

(BF-0000034)

(X) Battery Recharging
Port & Harness

(BC-1000004)

(R) Plastic Wire Sleeve

(M) AA Battery Pack
(Charge before use)

(BG-4000003)

(Y) Recharging Port Hardware

(Spacer: ID-0000071)
(Screw: IA-0000035)
(Nut: IC-000006)

(U) Wire Ties

(W) Headlight Grommet

(IH-0000010)

(Z) Loco Harness Spacer
(BD-0000065)

(S) Shrink Tubing

(Q) 6/32 Screw x 8mm

(IA-0000050)

(O) 6/32 x 6mm Screws

(IA-0000027)

(P) Nuts

(TP-M500075)

(N) M2 Screws

(IA-0000058)

PS-2 Upgrade Kit Installation Guide

5

V) Inductor

(AI-0000044)

(T) Foam Tape

Required Tools

Soldering iron
ESD safe work area
White thermally conductive grease
Screw drivers, Philips #2 & #00
Wire cutters
Drill
Drill bits (1/8”, 5/32”)
Drill bit (3/8” or ½”) or de-burring tool
Allen key (1.5 mm for Pittman motor
flywheel set screw)
Electrical Tape
Razor Saw

What Is An ESD?

As ESD safe work area is an
area set aside in your workshop
that is electrically grounded and
includes anti-static mats and
grounding straps

ESD Mat

Work Only in an ESD Safe Zone

Grounding Strap

PS-2 Upgrade Kit Installation Guide

6

Inspection & Review

Before beginning the installation, Inspect the engine and tender to be upgraded
and verify the following are in good working order:

Pick-up rollers
Motor w/flywheel
Smoke unit
Speaker mounting hardware
Volume pot
Coupler mounting hardware, “T” bar, spring, c-clip
Constant voltage lighting board and connected bulbs.

Note: If any of the above items are missing or not in working order, procure the
required parts before continuing.

Note: Before beginning installation, see discussion on page 32 on “wire
management” which should be planned as you proceed during the installation.
Part of the plastic wire tube (R) may be used for this purpose.

Make sure pickup rollers are clean & lubed and roll freely.

PS-2 Upgrade Kit Installation Guide

7

Preparing The Tender For The
PS-2 Upgrade

Before you can install the Ps2 components into your tender, any existing sound
boards or reversing units must be removed. The Ps2 Kit contains all the
necessary electronics your locomotive requires to operate. Some existing
mounting brackets may be utilized during the installation of the Ps2 components.
Follow the instructions below taking care to save the parts when noted.

Remove The Following Items From The Tender Chassis

Tender shell (save the mounting screws).
Proto-Sound 1, DCRU Reverse Unit, Mechanical Whistle, Electronic Whistle,

any other electronics and tender harnesses.
Speaker (save mounting hardware).
Existing coupler (save the “T” bar, spring, and c-clip).
Any lights including the rear back-up light and marker LEDs (if present). These

will likely be mounted inside the tender shell.
Do NOT remove the volume pot used on Proto-Sound 1 models.

Remove the old coupler by slipping off the “C”-clip from the coupler “T”-Bar.
If your locomotive does not have a volume pot, order BI-0000040 (volume pot),
IA-0000035 (screw), and ID-000071 (spacer), and IC-0000006(nut).

PS-2 Upgrade Kit Installation Guide

8

Installing The PS-2 Components Into
The Tender

Required Upgrade Kit Components

Typical component arrangement on tender floor. Note position of heat sink.

A) Proto-Sound 2.0 (Ps2) board (1)
B) Ps2 plastic mounting bracket (1)
C) Tender harness (1)
D) Ps2 metal heat sink bracket (1)
E) Proto-Coupler, long (1)
F) Back-up light (1)
G) Tender Marker Light Harness w/2
LEDs (1)
I) Speaker, 4 ohm 50mm diameter (1)
M) AA battery pack (1)
O) Screws 6/32 x 6 mm (3)

P) Nuts 6/32 (3)
Q) Screw 6/32 x 8 mm (1)
R) Plastic Wire Sleeve (for wire
managment) (1)
S) Shrink tubing (1)
T) Foam tape (1)
U) Wire Ties (7) (6) 4”, (1) 7”
X) Battery Recharging Port/Harness
Y) Battery Recharging Port Hardware
(2) Screws M3 x 12, (2) Nuts M3, (2)
Spacers
EE) Coupler Insulator

50mm

27mm

100mm

60mm

18mm

30mm

39mm

PS-2 Upgrade Kit Installation Guide

9

Mounting The PS-2 Board

Remove the Ps2 Board (A) from the
sealed anti-static bag

Verify Ps2 board is securely inserted
into the plastic mounting bracket (B)

Remove the speaker (K) from the protective packaging (NOTE: be careful not
to damage the speaker cone)

Place the Ps2 board/plastic mounting bracket (A/B) in the tender to verify the
best location to mount the plastic mounting bracket (B) and the metal heat sink
bracket (C) to the tender floor. Also locate a place to put the battery pack (M)
and battery charging jack (X).

NOTE: If you are not a
participating MTH
Authorized Service Center
there is NO warranty once
the bag is opened

NOTE: Use ESD safe work
area and procedures when
handling the PS2 board.

Make sure the Ps-2 board is firmly
inserted into the plastic mounting
bracket. If not, gently push the
board into the bracket until fully
“captured” by the bracket. DO
NOT REMOVE THE BOARD
FROM THE BRACKET.

Place the components on the tender floor in the best position given the space. It
may be necessary to turn the battery pack on its side as seen above.

PS-2 Upgrade Kit Installation Guide

10

Mounting The PS-2 Board Cont’d

Once you have determined the best locations for mounting the plastic bracket
(B), metal heat sink bracket (D), battery pack (M), and battery charging jack
(X), mark the tender floor locations using a pencil or silver marker so you can
drill the holes in the proper locations.

Drill the appropriate mounting holes as determined from positioning the Ps-2
board and other components

Remove the Ps2 board (A) with plastic mounting bracket (B), metal heat sink
bracket (D), speaker and battery from the tender and place on an ESD safe area
on your workbench.

Drill the holes as marked with the proper drill size. A 5/32” bit will be required
for the Ps2 plastic mounting bracket (B) and heat sink bracket (C). Use a 1/8”
bit for the battery charging jack mounting holes.

De-burr the holes slightly using a larger drill bit (3/8”) or a deburring tool.

Carefully remove any metal burrs resulting from drilling the mounting holes.
Loose metal burrs can damage the Ps-2 circuit board!

PS-2 Upgrade Kit Installation Guide

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Mounting The PS-2 Board Cont’d

Mount the plastic mounting bracket (B) containing the PS2 board (A) using the
2 of the screws (O) and nuts (P)

Apply white thermally conductive grease to the bridge rectifier on the PS2 board.

Mount the PS-2 plastic mounting bracket

Apply white thermally conductive grease to bridge rectifier & metal heat sink
bracket.

PS-2 Upgrade Kit Installation Guide

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Mounting The PS-2 Board Cont’d

Secure the metal heat sink bracket (D) to the bridge rectifier using screw (Q)

Note, if screw is too long, cut it down so it does not hit the relay

Apply thermal conductive grease to the metal heat sink bracket surface that
contacts the frame and mount to the tender frame using screw (O) and nut (P).

Installing The Proto-Couplers

The Proto-Coupler installs in the same location as the original engine coupler.

Install the proto-coupler (E) onto the existing tender trailing truck or coupler
mount location using the existing hardware. Be sure to route the coupler wire
harness through the tender floor.

Connect black Proto-Coupler connector to black tender harness connector on the
brown & purple wires.

Note: Use coupler insulator as required to prevent shorts from coupler solder
connections to tender truck axle.

PS-2 Upgrade Kit Installation Guide

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Coupler Installation

A plastic insulator, item EE in the parts list of your Proto-Sound 2.0 Upgrade Kit
has been included with the rest of your Ps2 Upgrade Kit parts.

This insulator should be inserted between
the coupler and the spring, washer and the
C clip that holds the coupler to the T-Bar
and truck bolster. The insulator prevents
the coupler wiring from contacting and
short circuiting against the truck’s axle.
Failure to insert the insulator could
permanently damage the coupler and
Ps2 board.

Shown here is the insulator
attached to the truck and coupler.
Ensure that the part of the
insulator which protects the
coupler’s wires extends up not
down when installed.

Shown above is the
coupler unassembled.

PS-2 Upgrade Kit Installation Guide

14

Tach Reader

(Bottom View)

Tach Reader

(Top View)

Pickup Roller

Leads

Ground Lead

Motor Leads

(Green) Smoke

Unit Fan Motor

(Blue) Headlight

Leads

(Red) Smoke Unit

Heating Element

Ps-2 Tender Plug

Boiler Connector

Optional Front Proto-Coupler Wiring

**Move the purple wire in the tender 12 pin connector from pin 5 location
(purple wire next to green wire) to pin 9 location (between brown and blue
wires).

*If front proto-coupler is desired purchase a coupler DD-0000032 and give up
Headlight Control. Power headlight as it was powered prior to PS2 upgrade.
Use the headlight connector (Blue) to control the front proto-coupler. Move the
purple wire in the tender 12 pin connector from pin 5 location (purple wire next
to green wire) to pin 9 location (between brown and blue wires).

PIN 5

**PIN 9

Engine Harness

Tender Harness 12 Pin Connector

*

PS-2 Upgrade Kit Installation Guide

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Installing The Tender Harness, Speaker, Switches & Lights

*Note: If tender has harness to connect an auxillary tender, connect the back­up light and coupler connectors to the harness. Use switch to select
light/coupler operation in tender or auxillary tender.

Ps-2 Battery

Charging Jack

Ps-2 Board

2 PIN

Battery Pack

2 PIN

Ps-2 Volume

Pot Leads

Ps-2 Speaker

Leads

Ps-2 Smoke

Unit Switch

Ps-2 Tender

Harness

Ps-2 Tender

Backup Light*

Ps-2

Proto-Coupler*

Ps-2 Tender

Marker Lights

12 PIN

5 PIN

4 PIN

7 PIN

8 PIN

PS-2 Upgrade Kit Installation Guide

16

PS-2 Board Connections

5 PIN

4 PIN

12 PIN

8 PIN

2 PIN

7 PIN

PS-2 Upgrade Kit Installation Guide

17

Installing The Tender Harness, Speaker, Switches & Lights

Attach tender harness (C) to the PS2 board (A) noting the connectors all should
fit in their respective locations. See previous pages for locations.

Take care to insert the correct plug into the correct connector on the Ps-2 board.
Each plug is polarized and has a different number of pins.

Install the speaker (I) into the previous speaker mounting location using the

existing hardware.

Install the smoke unit switch (attached to the tender harness) in the tender

frame cut out using screws (N). (If one does not exist, locate the switch in the

best possible location.)

Mount the smoke unit switch into the existing switch hole on the tender floor

using srews (N).

PS-2 Upgrade Kit Installation Guide

18

Soldering Speaker Connections

Install the rear back up light (F) with green connector and marker lights (G) with

yellow connector as required in the model. Connect the backup light green

connector and marker light yellow connector to the green and yellow Ps2 harness

connectors, respectively. (Note if only 1 marker light is required, secure one of the

LEDs from the wire harness inside the tender.)

Ensure proper wire management by using pieces of plastic sleeve (R) to hold
various cables in place.

Ensure that the yellow speaker lead goes to the (+) speaker terminal and white
to the (-) terminal.

Solder the yellow and white wires to the speaker (I) making sure to get the polarity

correct, yellow(+) and white (-) and soldered wires do not short to speaker frame.

WARNING: If either wire shorts to the speaker frame the PS2 electronics will be

damaged.

PS-2 Upgrade Kit Installation Guide

19

Installing The Battery And Volume Pot

Plug the 2 pin battery pack connector into the Ps-2 board.

The battery pack connector comes pre-mounted to the recharging port (X) and
battery pack cable. It plugs into the Ps2 Circuit board as indicated by the arrow.

Mount the 2 pin battery recharging jack (X) to tender floor as shown below.

Insert the spacers (Y) between the recharging jack board and the tender floor to

prevent the recharging jack port from extending below the tender floor. Secure

with screws from underside of frame and nuts (Y).

PS-2 Upgrade Kit Installation Guide

20

Solder the wires to the existing volume POT. Red wire to the center terminal,
blue to one outer terminal and gray to the other outer terminal.

Place the double-sided foam tape (T) on the tender floor in the proper
location established previously.

Secure the AA rechargeable battery pack (M) using double-sided foam tape.

Solder the red, blue and gray volume pot wires to the volume pot. Red to the

center terminal and blue and gray to the outside terminals.

Connect the battery harness to the battery pack. Note in the example above how
the foam tape is also located beween the volume pot and the battery pack.

PS-2 Upgrade Kit Installation Guide

21

Note: Volume pot not required for command operation. Solder gray and red wires
together to get full volume in conventional mode and insulate the blue wire from
chassis ground.

Preparing The Locomotive For The
Ps2 Upgrade

Boiler (save the mounting screws).

Headlight bulb and wire harness plug from

the constant voltage board if present.

4 pin connector at the rear of the engine that connects to the tender harness

(save the mounting screws).

Remove motor and unsolder the wires connected to the motor.

Remove the smoke unit (if present and retain all mounting hardware).

Unsolder wires to the smoke unit (if present).

Unsolder the wires to a smoke switch if present.

Note: This would be a good time to grease the chassis gearbox and rotate the
drive wheel assembly to verify that the drive assembly rotates freely. Follow the
lubrication instructions in the locomotive’s operator’s manual. If some binding
is found, correct before proceeding.

Remove The Following Items From The Engine

Note: Do not remove the
constant voltage board &
bulbs connected to it.
These will be reused later
as detailed on pg. 28.

Unsolder the motor leads at the motor and remove the 4-pin connector mounted

at the back of the locomotive chassis.

PS-2 Upgrade Kit Installation Guide

22

Installing Tach Reader Bracket

Based on the motor type, install the correct tach reader mounting bracket. The
bracket is screwed into place on a Pittman motor or snapped into place on a
Mabuchi motor. The bracket is snapped into place by spreading it open and
sliding it under the flywheel. It may be necessary to use tape or expoxy glue to
hold in position.

Identify which type of motor the
locomotive is equipped with. There are
two Mabuchi sizes (middle and right) and
one Pittman size.

Screw the Tach Reader bracket onto
the top of the Pittman motor using
screws (AA) as shown.

The flywheel on the Pittman motor
must be removed so that the Tach
Reader bracket can be installed on
the motor. It is not necessary to
remove the flywheels on the
Mabuchi motors.

Unscrew the top motor mount screws

so that the tach reader bracket can be

installed onto the Pittman motor.

Determine Engine Motor Type

Verify which type of motor is present (Pittman or Mabuchi)
If the motor is a Pittman model (the Pittman name is printed on the motor

label), remove the flywheel by loosening the set screw with the Allen Key.

PS-2 Upgrade Kit Installation Guide

23

Installing Tach Reader Bracket

Clean the flywheel with a cleaning
solution and then install the tach tape
to the flywheel (measure flywheel
diameter and select proper tape)
Apply tape end with the largest white
portion first, wrap the tape around the
flywheel until it overlaps.

Reassemble the flywheel onto the
drive shaft (Pittman motors only).

Small Mabuchi Motor

Spread the Tach Reader bracket
apart and slip between the flywheel
and motor for engines equipped with
Mabuchi motors.

Push the bracket all way onto the top
of the motor. The small tabs
extending down will “lock” onto
motor casing.

Some Mabuchi motors are larger
than others and will require that the
tach reader bracket be modified in
order to fit around the motor. Cut the
bracket straps as shown.

Slip the modified bracket around the
motor and snap into place. It may be
necessary to glue or tape the bracket
in place.

Large Mabuchi Motor

Installing Tach Tape Onto Motor Flywheel

PS-2 Upgrade Kit Installation Guide

24

Mounting Tach Reader To Tach Reader Bracket

Insert the tach reader into the tach

reader bracket.

The gap between the optical sensor and

flywheel should be 0.5 mm (0.022”) –

1.5 mm (0.060”); 0.75mm (0.030”) is

optimum.

If the gap is too small, remove the tach

reader spacer as detailed below. This

increases the gap by 2.2mm.

Spark plug feeler gauges are useful to

establish the proper gap.

Check the distance between the flywheel and tach reader. Adjust if necessary
as detailed below.

The tach reader spacer can be
removed by unsoldering the tach
reader prongs on either side of the
spacer as seen above.

When inserted into the tach reader
bracket, the distance between the
tach reader and the flywheel should
be between .5mm & 1.5mm.

Once the spacer has been removed,
resolder the tach reader to the tach
reader circuit board.

PS-2 Upgrade Kit Installation Guide

25

Mounting Harness Connector

Mount the 10-pin connector to the back of the chassis using the screws that held

the previous 4-pin connector in place. It may be necessary to use the spacer (Z)

as a shim if the connnector doesn’t properly line up with the opening at the back

of the boiler.

Spacer (Z) will prevent gap from

appearing above plug.

If needed, the spacer goes beneath
the 10- Pin connector. It may need to
be cut to fit.

Installing The Ps-2 Harness Into The
Locomotive

Check the alignment of the 10-pin connector with the plug cut-away at the back
of the boiler. Use the spacer (Y) if neccessary.

PS-2 Upgrade Kit Installation Guide

26

Solder the yellow and white wires to the motor. (Note if the engine starts out in

the reverse direction, you will later need to reverse the yellow and white wires to

the motor. This will not be tested until installation is complete - see page 30)

Connect the red wire to the pick-up roller using the existing wire nut. You will

also need to connect the constant voltage board power lead to this wire as

detailed later.

Connect the black wire to chassis ground.

Connecting Motor, Ground & Pickup Wires

Connecting Headlight Bulb & Wire Harness

Install the Headlight bulb (J) into the proper engine location and connect the
headlight bulb wire connector (blue) to the engine harness connector (blue)
attached to the sky blue and purple wires.

Tach Reader

(Bottom View)

Tach Reader

(Top View)

Pickup Roller

Leads

Ground Lead

Motor Leads

(Green) Smoke

Unit Fan Motor

(Blue) Headlight

Leads

(Red) Smoke Unit

Heating Element

Ps-2 Tender

Plug Boiler

Connector

PS-2 Upgrade Kit Installation Guide

27

Installing The Headlight Into RailKing Steam Engines

On RailKing steam locomotives, the headlight is usually a screw based bulb

inserted into a bracket mounted to the chassis. This bulb must be replaced and

the screw base bracket drilled out with a 3/8” Drill Bit. Insert the headlight

bulb grommet (W) into the drilled out hole followed by the headlight bulb (J).

After the rubber grommet has been inserted, push the headlight bulb through the

grommet from the bottom of the bracket.

Drill out the bottom of the screw base
for the original headlight bulb used in
RailKing steam engines.

Once the screw base has been drilled
out, insert the rubber headlight
grommet (W) into the hole.

PS-2 Upgrade Kit Installation Guide

28

Solder Gray and Green wires to the

smoke unit fan motor. If the smoke

unit motor terminals are hooked up

backward, the impeller will spin in

reverse and fail to pump out the smoke.

When properly wired, most impellers

should rotate clockwise.

Cut through the traces on the top of the

smoke unit board. The heating

elements MUST be isolated from the

electronics on the board or the Ps-2

board will be permanently damaged.

Another alternative is to cut the printed

circuit board such that the electrical

components are no longer present since

the Ps-2 hardware will be managing the

smoke unit heating elements and

motor.

Solder the heating pads together at both

sides on the top of the board by adding

more solder. Then solder the Brown

wire to one pad and the Purple to the

other (the pads are interchangeable).

Soldering to the trace for each end of

the element is also acceptable.

Connecting The Ps-2 Harness To The Smoke Unit

Connect the purple and brown
wires to the solder pad locations as
seen above.

Follow the above wiring directions
to the smoke unit motor .

Use a razor saw to cut the bottom of
the smoke unit circuit board,
isolating the no longer required
components on the left. FAILURE

TO CUT TRACE COMPLETELY
WILL PERMANENTLY DAMAGE
Ps-2 BOARD.

CRITICAL STEP!! Solder together the

pads connecting the heating element to
the circuit board as shown above. Make
sure the heating elements are in
parallel. You should measure 8 ohms
across the pads. Failure to place the
heating elements in parallel will
permanently damage the PS-2 board
If your smoke unit does not look like the
one shown above see page 22.

gray wire

green wire

CRITICAL STEP!!

brown

purple

PS-2 Upgrade Kit Installation Guide

29

Other Proto-Smoke Circuit Wiring Methods

Please keep in mind the objective when modifying Original ProtoSound fan
driven smoke unit is to place the heating elements in parallel and isolate the
heating elements from the smoke unit circuit board components. Please see the
picture below showing one other style found in RK Allegheny, Big Boy, and
Challengers.

Cut traces here to put heating elements in parallel

solder

solder

PS-2 Upgrade Kit Installation Guide

30

Use one of the previous red power wires to provide track power to the
locomotive’s original constant voltage board (if present). The constant voltage
board is used to power all lights in the boiler EXCEPT the headlight.

An inductor (V) must be placed “in-line” between the red power wire and the
track power wire originally used to power the constant voltage board.

Install the inductor between the
engine’s power pickup lead and the
power lead going to the constant
voltage board.

After soldering the inductor into
place, use shrink tubing and
electrical tape to insulate the
inductor completely.

Locate the engine’s constant voltage board power pickup wire as shown.

Connect Power To The Constant Voltage Board

PS-2 Upgrade Kit Installation Guide

31

Route the wires around the motor and chassis such that the wires will not be
pinched when the boiler is installed.

NOTE: The wires may need to be cut and spliced together to shorten the
length of the wires. Use the shrink tubing (S) supplied in the kit for this
purpose whenever necessary.

Add 7” wire tie (U) to tender cable to

provide “strain” relief. Place the wire

tie about 4” from the plug.

Wire Management/Short Circuit Protection

PS-2 Upgrade Kit Installation Guide

32

Testing The Ps-2 Upgrade
Installation

Connect the tender (without the tender shell on) to the engine (chassis only) by

inserting the tender harness into the 10 pin plug at the rear of the engine.

Apply 12 volts of power (in conventional mode) to the engine and tender. If

you have a Z4000 look at the current display. The engine should not draw more

than 1.5 amps. If the engine draws more than 1.5 amps, shut down power to the

engine and tender immediately and check your wiring for any pinched or cut

wires. Turn the smoke unit switch off and power up again in conventional

mode. The engine without the smoke unit on should not draw more than 1.0

amp. Troubleshoot any problem in the smoke unit or wire harness accordingly.

Check the smoke unit for operation. If no smoke is coming out or you can’t feel

the fan blowing air out, the gray/green wires connected to the fan motor may be

reversed.

Press the direction button and verify the locomotive moves in the forward

direction. Reverse the white and yellow motor wires if the engine starts in

reverse. If the engine does not move, the battery most likely needs to be

charged. (See battery charging instructions on page 43)

Press the whistle button and verify the whistle test sound. The sound is not a

normal whistle but a test tone.

Press the bell button and verify the bell test sound. The sound is not a normal

bell but a test tone.

Fire the coupler using the combination signal in conventional mode or the

digital signal with the DCS remote.

Press the direction button and verify the engine stops.

Press the direction button again and verify the engine moves in reverse direction

and that the headlight and back-up lights work properly.

Install the tender and boiler shells on the tender and engine chassis being very

careful not to pinch any wires in the process and repeat the tests above.

PS-2 Upgrade Kit Installation Guide

33

Loading The Ps-2 Sound File
Into The Upgraded Engine

Before your upgraded locomotive will play locomotive sounds, the Ps-2 circuit
board needs to be programmed with the appropriate Ps-2 Conversion File for
your engine type. Programming can only be accomplished with the M.T.H.
DCS Digital Command System and the free DCS Loader Program. Both the
Loader Program and the Ps-2 Conversion Files can be found on the Proto-Sound
website (www.protosound2.com). Complete instructions for downloading the
Loader Program and the Ps-2 Conversion files are found on the website.

Note: It is important to remember that only the Ps-2 Conversion Files can be
used to program your Ps-2 Upgrade circuit board. The sound files found on the
regular M.T.H. Website will not work in the Ps-2 Upgrade circuit board.

Once you have the DCS equipment and have downloaded the DCS Loader
Program, you will need to visit the Ps-2 Upgrade page on the Proto-Sound 2
website and search for your locomotive model or one similar to it in order to
find the sound file you will need to download. Each Ps-2 Conversion File has
been optimized for its intended locomotive and takes into consideration the type
of motor, the gear ratio and most importantly, the size of the drive wheels to
govern the speed of the locomotive. Users trying to install a steam switcher
locomotive (i.e.: 0-6-0) Ps-2 Conversion File into a large mainline steam engine
(ie: 4-8-4 Northern), for example, will find that the locomotive cannot run at the
same scale speed as other engines and that the chuff rate will not be properly
timed with the driver revolutions. This is because the driver sizes of the two
different locomotives are drastically different from one another.

Follow the illustrations on the following pages to learn how to search for the
locomotive you are upgrading and download the appropriate sound file. Once
the sound file has been downloaded into the engine, it will be necessary to
program the engine name using the DCS remote. Follow the DCS instructions
for renaming a locomotive.

Note: If you are upgrading a non-M.T.H. Locomotive, pick a model in the
search engine similar to the model you are upgrading. It is possible that the
scale speeds and chuff rates may be slightly off for the reasons discussed above.

PS-2 Upgrade Kit Installation Guide

34

PS-2 Upgrade Kit Installation Guide

35

Refine your search results with these options

STEP 1:

The Ps2 upgrade kit utilizes the 3volt Ps2 board. To find a 3volt sound file, go to

and select “Service”. Then select “Product Files and

Documents” from the available options.

www.mthtrains.com

STEP 2:

Search using the general engine type,
such as 4-6-6-4 or Challenger. Engine
wheel arrangement is recommended.

Refine the search by selecting the
Product Line, or the Road Name
desired. (Note: You may have to use
another road name or product line ­RailKing vs. Premier - for the upgraded
engine.) If you do not find a sound set
with the appropriate product line or
road name, select the best sound for the
locomotive.

Since most Steam models use different
wheel diameter and gear ratios,
RailKing and Premier sound files can
not be used interchangeably without
effecting the speed. (Note: Premier
engines usually have more lighting
options.)

First, select “Service”

Then, click on “Product Files and Documents”

Search for the general engine type

PS-2 Upgrade Kit Installation Guide

36

Select either the 3volt Production

File or PS 2.0 Upgrade sound file,

and save the file to your computer

STEP 3:

Select the engine sound file

from the results list.

Remember to select a 3volt

production file, or the Ps2

Upgrade Sound File (if

available). Right click and

save the sound file to your

computer. Use the DCS

Loader Program to load the

sound file into your engine.

STEP 4:

Name the engine so the name appears on

the DCS remote using the Edit Name

DCS feature under Engine Setup. Add the

engine to the DCS system. The engine

will add, but no name will appear next to

the engine address number. Use the edit

name feature to add the engine name

(limit 16 characters).

Indicates Freight
Yard Sounds

Indicates Passenger
Station Sounds

After adding the engine into the DCS
system, name the engine on your DCS
remote using the Edit Name feature

Conventional PS-2 Operation

The Throttle knob controls how fast your train will travel.
Turn the throttle knob up ½-way, until the engine and caboose lights shine
bright.

Activating Features

Throttle - To increase or decrease track voltage, and therefore train speed, turn

the throttle control knob. Turning clockwise will increase voltage and speed,

while turning counterclockwise will decrease voltage and speed. The engine

will maintain the speed you set after you release the throttle until you turn it

again to change the voltage and speed.

Bell - To sound the bell, in an engine equipped with a bell firmly press and

release the Bell button. To turn the bell off, press and release the Bell button

again. The bell will continue to ring from the time you turn it on until you press

and release the button again to turn it off.

Horn/Whistle - To sound the whistle, firmly press the Horn/Whistle button. The

whistle will sound for as long as you continue to depress the button. It will stop

when you release the button.

Direction - Your train is programmed to start in neutral. The train will always

cycle neutral-forward-neutral-reverse with each press and release of the

direction button. The engine is programmed to restart in neutral each time the

track voltage is turned off for 25 seconds or more.

Manual Volume Control

To adjust the volume of all sounds made by this engine, turn the manual volume

control clockwise to increase the volume and counter-clockwise to decrease the

volume.

Cycle Phases

Neutral

Neutral

ForwardReverse

PS-2 Upgrade Kit Installation Guide

37

Timing Chart

Total Time Lapse: 1 Seconds½

Press

Horn

Short &

Firm

½ Sec.

Pause

½ Sec.

Pause

Press

Bell

Short &

Firm

Press

Bell

Short &

Firm

Feature to Be Activated

Button Code:

Passenger / Freight Announcements
Fire the Rear Coupler
Fire the Front Coupler
Speed Control On/Off
Lock into a Direction
Reset to Factory Defaults

1 Bell, 2 Horns
1 Bell, 3 Horns
1 Bell, 4 Horns
1 Horn, 2 Bells (from Neutral only)
1 Horn, 3 Bells
1 Horn, 5 Bells (from Neutral only)

Activating Proto-Sound® 2.0 Conventional Mode Features

Proto-Sound® 2.0 features are activated by sequences of Bell and Horn button

pushes described below. Please read the full descriptions of each feature before

using it. To use these buttons to activate features rather than to blow the horn or

ring the bell, you should tap the buttons very quickly with a ½-second pause

between button presses. You may need to practice your timing to make this

work smoothly.

Proto-Sound® 2.0 Operating Instructions

This manual contains the operating instructions for Proto-Sound 2.0 in
conventional mode only. Instructions for accessing DCS command mode
features accompany the DCS Remote Control System equipment.

PS-2 Upgrade Kit Installation Guide

38

Passenger/Freight Announcements (PFA)

Your engine is equipped with a sound package of passenger station or freight

announcements that you can play when you pull into a station. Each sequence

described below will play as long as it is left on, randomly generating sounds,

but be sure to allow approximately 30 seconds between the button pushes

described below to allow the PFA sufficient time to run through each sequence.

• To cue the sound system to play the PFA, quickly but firmly tap the Bell
button once followed by 2 quick taps of the Horn button while the engine is
moving. Tap the buttons quickly but allow approximately ½ second between
each press.

• Press the Direction button once to stop the engine. This will trigger the first
sequence of PFA. The reverse unit is temporarily disabled so that the train will
not move as you use the Direction button to trigger the sounds, and Proto­Sound 2.0 has disabled operator control over the Horn and Bell buttons until
the full PFA sequence is complete.

• After waiting about 30 seconds for that sequence to run, press the Direction
button again to trigger the second sequence of PFA. After about 30 seconds,
press the Direction button again to trigger the third PSA sequence.

• Again, after allowing about 30 seconds for that sequence to run, press the
Direction button one more time to trigger the fourth and final PSA sequence.
The PSA will continue, and within a few seconds, the engine and bell will
start and move out on its own at the current throttle setting, in the same
direction it was traveling when you began the sequence. Once the bell turns
off, the operator regains control of the transformer's bell and Horn buttons and
can ring the bell or blow the Horn as usual.

+

Sound System Cued

to Play Passenger/ Freight

Announcements (PFA)

Horn Horn

Bell

Direction

1st

Sequence

PFA

+

Direction

2nd

Sequence

PFA

+

Direction

3rd

Sequence

PFA

+

Direction

4th

Sequence

PFA

=

Operator
Controls

When Bell

Turns Off

PS-2 Upgrade Kit Installation Guide

39

• You can terminate PFA at any time by turning off power to the track for
15 seconds.

• You do not have to be in Forward to use PFA. At the conclusion of the full
sequence, the train will pull away from the station in whatever direction
you were going when you activated the feature.

• You can use PFA even if you are double-heading with another engine. If
the second engine is not equipped with Proto-Sound 2.0, you must
remember not to leave the throttle at a high voltage level once you have
stopped the engine to run the PFA. Otherwise, the engine without PFA
will begin vibrating on the track as its motors strain to move the train,
since they cannot be automatically disabled during the PFA cycle (or if an
original Proto-Sound engine, PFA are triggered differently and that
engine's motor-disable feature will not be active when you run PFA in
Proto-Sound 2.0).

• PFA can be triggered from Neutral. It will operate the same as if triggered
while in motion except that, at the conclusion of the PFA, the engine will
depart in the next direction of travel, as opposed to the direction it was
Traveling before entering Neutral.

™

Proto-Coupler Operation

This locomotive is equipped with one or more coil-wound Proto-Couplers for
remote uncoupling action. Because Proto-Couplers are controlled through the
Proto-Sound® 2.0 microprocessor, they do not require an uncoupling track
section or modification to your layout to function. You can fire a coupler from
neutral or while in motion. Use the code shown below (and in the chart on p. 7)
to fire the coupler(s).

Rear Coupler:

To fire the rear coupler, quickly tap the Bell button once followed by three quick
taps of the Horn button, allowing approximately ½ second to lapse between each
quick button press. The sound of the liftbar and air line depletion will play, and
the knuckle will be released.

Horn Horn

Fire

Rear

Coupler

=

Horn

Bell

Tips on Using PFA

PS-2 Upgrade Kit Installation Guide

40

Front Coupler:

To fire the front coupler (if your engine has one), quickly tap the Bell
button once followed by four quick taps of the Horn button, allowing
approximately ½ second to lapse between each quick button press. The
sound of the lift bar and air line depletion will play, and the knuckle will
be released.

Horn Horn

Fire

Front

Coupler

=

Horn Horn

Bell

Speed Control

M.T.H. engines equipped with Proto-Sound 2.0 have speed control capabilities
that allow the engine to maintain a constant speed up and down grades and
around curves, much like an automobile cruise control. You can add or drop
cars on the run, and the engine will maintain the speed you set.

While the engine is programmed to start with the speed control feature
activated, you can opt to turn it off. This means the engine's speed will fall as it
labors up a hill and increase as it travels downward. It is also affected by the
addition or releasing of cars while on the run. Because the engine will run more
slowly at a given throttle voltage when speed control is on than when it is off,
you should adjust the throttle to a lower power level for operation with speed
control off to avoid high-speed derailments. When speed control is off, the
volume will drop to allow for better low voltage operation.

To turn speed control on and off, put the engine in neutral, then quickly tap the
transformer's Horn button one time then quickly tap the Bell button two times,
allowing approximately ½ second to lapse between each quick button press.
Two horn blasts will indicate that the engine has made the change. Repeat the 1
horn, 2 bells code to return it to the other condition. You will want to do this
during the initial neutral upon start-up if you ever couple this engine to another
engine that is not equipped with speed control to avoid damaging the motors in
either engine. Each time you shut down the engine completely, it will
automatically turn speed control on.

Horn

Place

Engine into

Neutral

Bell Bell

=

Speed Control

Two Horn Blasts

(indicates change is made)

Repeat to Return

to Normal Condition

PS-2 Upgrade Kit Installation Guide

41

Locking Locomotive Into a Direction

You can lock your engine into a direction (forward, neutral, or reverse) so that it
will not change directions. To do this, put the engine into the direction you
want (or into neutral to lock it into neutral), run it at a very slow crawl (as
slowly as it will move without halting), and quickly but firmly tap the Horn
button once followed by three 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. The engine will not
change direction (including going into neutral) until you repeat the 1 horn, 3
bells code to return the engine to its normal condition, even if the engine is kept
without power for extended periods of time.

Horn

Place

Engine into

Desired

Direction

Horn

Bell Bell Bell

=

Direction Lock

Two Horn Blasts

(indicates change is made)

Repeat to Return

to Normal Condition

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

=

BellBellBellBellBell

Automatic Sound Effects

Certain Proto-Sound 2.0 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.

PS-2 Upgrade Kit Installation Guide

42

Self Charging Battery Back-up

The special rechargeable 2.4v self-charging battery recharges continuously
during train operation and should last for up to five years. The battery is a dry
battery that should not leak or cause any damage to your engine. Depending
upon when your engine was built, it may need to be charged right out of the box.
If engine sounds seem distorted or garbled at low voltages or become silent
when power from the transformer is turned off, test the battery to determine
whether it should be recharged or replaced.

Test: Put the engine in neutral and leave the track voltage at 10-12 volts (high
enough for the lights to shine brightly) for 15 minutes.

Recharge: If the sounds are improved at the end of the 15-minute test charge,
the battery charge has run down and can be recharged. There are a number of
ways you can do this:

· Leave the engine in neutral with track voltage at 10-12 volts for 6-7 hours so

the battery can fully recharge (if your engine has a smoke unit, be sure it is
turned off).

· Use M.T.H.'s battery recharger (Item No. 50-1019) (sold separately) that plugs

into a wall outlet and a special port under the engine to recharge the battery
overnight without leaving it on the track.

Replace: If the sounds are not improved at the end of the 15-minute test charge,
it is time to replace the battery. Available through M.T.H. Parts:

®

(Part No. BG-4000003) AA Proto-Sound Battery

®

(Part No. BG-4000004) AAA NiMH Proto-Sound Battery
DO NOT substitute alkaline batteries for these rechargeable batteries. Using

alkaline batteries in this system can result in damamge to the PS 2.0 circuit
board and/or the batteries.

**Do not use alkaline batteries for testing or checking purposes for the 3-Volt
PS2 boards. Using alkaline batteries will damage the 3-Volt battery charging
circuit.**

PS-2 Upgrade Kit Installation Guide

43

Troubleshooting Proto-Sound® 2.0 Problems

Although Proto-Sound 2.0 has been designed and engineered for ease of use, you
may have some questions during initial operation. The following table should
answer most questions. If your problem cannot be resolved with this table,
contact M.T.H. for assistance (www.mth-railking.com, e-mail: parts@mth­railking.com,Fax: [phone], Phone: [phone], Mail: 7020 Columbia
Gateway Drive, Columbia MD 21046-1532, ).

Starting Up

Whistle/Horn

Bell

Coupler

Remedy

Remedy

Remedy

Remedy

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.

When I press the whistle/horn button,
the bell comes on instead.

I can’t get the horn to blow when I
press the whistle button.

I can’t get the bell to ring when I press
the bell button.

The bell won’t work on a separate bell
button.

When I try to fire the coupler, PFA
starts.

The Proto-Coupler won’t let the engine
uncouple on the fly.

The coupler does not fire or stay
coupled.

When I press the whistle button, the
bell sounds.

Reverse the transformer leads.

You may be pressing the button too
quickly. Try pressing the whistle/horn
button more slowly, taking approximately
one full second to fully depress the
button.

You may be pressing the button too
quickly. Try pressing the bell button
more slowly, taking approximately one
full second to fully depress the button.

Reverse the transformer leads.

Check the wiring of the separate
button.

You are waiting too long between
whistle button presses.

Try lubricating the coupler knuckle
with a dry graphite lubricant. Do NOT
use oil.

The coupler needs to be cleaned.
Wipe with denatured alcohol (not
rubbing alcohol) and let dry.

This is normal behavior. To prevent
accidental high-speed start-ups,
Proto-Sound 2.0 is programmed to
start up in neutral anytime track power
has been turned off for several
seconds. See the "Basic Operation"
section for more details.

PS-2 Upgrade Kit Installation Guide

44

Cab Chatter

Lock-out

Volume

Battery

PFA

Remedy

Remedy

Remedy

Remedy

Remedy

Sometimes the Cab Chatter sounds
don’t play.

I can’t get the engine to run after I
power up the transformer. It sits still
with the engine sounds running.

The engine won’t lock into forward,
neutral, or reverse.

The sounds seem distorted, especially
when the whistle or bell is activated.

The engine will not leave the initial
neutral setting.

The PFA sounds occasionally repeat
themselves.

I get no sounds when the engine shifts
between directions.

After I turn off my transformer, my
engine continues to make sounds
before quitting.

Cab Chatter plays only in neutral at
random intervals.

The engine is locked into the neutral
position. Follow the procedure in the
“Lock into a Direction” section.

Engine speed must be below 10 scale
mph (approx. 10 volts or less in
conventional mode).

Proto-Sound 2.0 volume is set too
high. Turn the volume control knob on
the bottom of the chassis counter­clockwise to reduce the volume.

Check to be sure the battery is
installed and fully charged. See the
“Self-Charging Battery Back-Up”
section.

The battery may be dead or need to
be charged. See the “Self-Charging
Battery Back-Up” section.

Proto-Sound 2.0 is designed to
continue to sound for a few seconds
after power to the track has been shut
off.

Proto-Sound 2.0 has a built-in random
number generator that randomly
selects each sound clip to play.
Because there are a limited number of
sound clips available in each PFA
sequence, it is probable that some of
these sound clips will be repeated
from time to time.

PS-2 Upgrade Kit Installation Guide

45

PFA Remedy

Once in PFA, the engine doesn’t go
into reverse.

When the PFA enters its last
sequence the bell automatically
comes on.

When PFA is enabled, pressing the
whistle and bell buttons has no effect.

I push the direction button but the next
sound clip in the sequence does not
play or the engine does not come out
of PFA after fourth press of the
direction button.

So that PFA effects can be as realistic
as possible, Proto-Sound 2.0 disables
the reversing unit whenever PFA is
enabled. This way the engine remains
still at its stop as the operator cycles
through the PFA sequences.

PFA is programmed to start ringing the
bell at that point. After approximately
12 rings of the bell, it will automatically
turn off.

Because FYS must control various
effects in each sequence, Proto­Sound 2.0 takes control of these
sound effects until you exit FYS.

Each PFA clip must play for approx.
30 seconds before PFA will advance
to the next step in the PFA cycle. Wait
at least 30 seconds in each PFA
sound clip before pressing the
direction button.

PS-2 Upgrade Kit Installation Guide

46

When you suspect an item is defective, please check the operator's manual for standard operation and
trouble-shooting techniques that may correct the problem. Additional information may be found on the
M.T.H. Website. Should you still require service, follow the instructions below to obtain warranty
service.

First, e-mail, write, call or fax the M.T.H. Authorized Proto-Sound 2.0 Conversion Center that installed
the kit to obtain Repair Authorization. You can find the list of conversion centers on the M.T.H.
Website, www.mth-railking.com. The center that installed the kit will provide service during the
warranty period. Should the warranty no longer apply, you may choose either an ASC or NASC retailer
to service your M.T.H. Product. A reasonable service fee will be charged.

CAUTION: Make sure the product is packed in its original factory packaging including its foam and
plastic wrapping material to prevent damage to the merchandise. There is no need to return the entire
set if only one of the components is in need of repair unless otherwise instructed by the Service Center.

The shipment must be prepaid and we recommend that it be insured. A cover letter

including your name, address, daytime phone number, e-mail address (if available),

Return Authorization number (if required by the service center, a copy of your sales

receipt and a full description of the problem must be included to facilitate the repairs.

Please include the description regardless of whether you discussed the problem with a

service technician when contacting the Service Center for your Return Authorization.

Please make sure you have followed the instructions carefully before returning any merchandise for
service. Authorized M.T.H. Service Centers are independently owned and operated and are not agents
or representatives of M.T.H. Electric Trains. M.T.H. assumes no responsibility, financial or otherwise,
for material left in their possession, or work done, by privately owned M.T.H. Authorized Service
Centers.

If you installed the PS-2 Upgrade Kit yourself, there is no warranty. Conact M.T.H. for replacement
parts. Any required parts, plus shipping and handling fees will be charged. If you need assistance at any
time email MTH Service at [e-mail], or call 410-381-2580.

Limited 90-Day Warranty

This product, when installed by an Authorized M.T.H. Proto-Sound 2.0 Conversion Center, is covered by this warranty.
See our website at www.protosound2.com or call 410-381-2580 to identify an Authorized M.T.H. Proto-Sound 2.0
Conversion Center near you.

M.T.H. Proto-Sound 2.0 Upgrade Kits are warrantied for 90 Days from the date of installation by an Authorized
M.T.H. Proto-sound 2.0 Conversion Center against defects in material or workmanship. We will repair or replace (at
our option) the defective part without charge for the parts or labor, if the item is returned to the M.T.H. Authorized
Proto-Sound 2.0 Conversion Center who installed the kit within 90 Days of the installation. This warranty does not
cover damages caused by improper care, handling, or use. Transportation costs incurred by the customer are not
covered under this warranty. This warranty does not cover any installation charges incurred from installing the
conversion kit.

Items sent for repair must be accompanied by a return authorization number, a description of the problem, and a copy
of the original sales receipt from an Authorized M.T.H. Proto-Sound 2.0 Conversion Center, which gives the date of
purchase and installation of the kit.. If you are sending this product to an Authorized Proto-Sound 2.0 Conversion
Center, contact that Center for their return authorization. This warranty gives you specific legal rights, and you may
have other rights that vary from state to state. Specific questions regarding the warranty may be forwarded to M.T.H.
directly.

Service Department
M.T.H. Electric Trains
7020 Columbia Gateway Drive
.Columbia MD 21046-1532

Service & Warranty Information

How to Get Service Under the Terms of the Limited Warranty