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E L E C T R I C
T R A I N S
R
MTH SD70MAC DIESEL ENGINE
OPERATING INSTRUCTIONS
Thank you for purchasing the MTH Electric Trains SD70MAC diesel
locomotive. Despite its scale size, the locomotive is capable of operating
on O-31 3-rail track with any compatible AC transformer, (see page 32 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, the Quick 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 Proto-Sound®
equipped engines and are marked as such.
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Summary of Contents for M.T.H. SD70MAC
- Page 1 MTH SD70MAC DIESEL ENGINE OPERATING INSTRUCTIONS Thank you for purchasing the MTH Electric Trains SD70MAC diesel locomotive. Despite its scale size, the locomotive is capable of operating on O-31 3-rail track with any compatible AC transformer, (see page 32 for a...
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Page 2: Table Of Contents
OIL & LUBRICATION INSTRUCTIONS TRACTION TIRE REPLACEMENT INSTRUCTIONS LIGHT BULB REMOVAL & REPLACEMENT TROUBLE SHOOTING PROTO-SOUND® PROBLEMS Proto-Sound® RESET Feature Chart Transformer Wiring Chart O-31 OPERATION SERVICE AND WARRANTY INFORMATION HOW TO GET SERVICE LIMITED ONE YEAR WARRANTY MTH SD70MAC Operating Instructions... -
Page 3: Quick Start - Basic Operation(All 3-Rail Models)
The MTH SD70MAC contains state-of-the art electronics with several built-in automatic features for incredibly realistic operation. Despite these advanced features, the SD70MAC is easy to operate with any compatible standard AC transformer (see the compatibility chart on page 32). All models are equipped with an operating smoke system that should be primed with smoke fluid before operating. -
Page 4: Protosmoke™ Unit Operation
PROTOSMOKE™ UNIT OPERATION The SD70MAC 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 power truck must be in the ON position in order for the smoke unit to function. See Fig. 1 on page 3. -
Page 5: Proto-Sound® Operating Instructions
This takes approximately 2.2 seconds during which you will hear the engine’s startup sounds begin. In order for Proto-Sound® to properly initiate the system check, do not advance the transformer throttle past 10 volts when you first MTH SD70MAC Operating Instructions... -
Page 6: Horn Operation
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 SD70MAC Operating Instructions... -
Page 7: Protocoupler™ Operation
PROTO-COUPLER™ OPERATION Your SD70MAC ProtoSound®-equipped locomotive is equipped with two coil-wound ProtoCouplers™ for remote uncoupling action. Because the ProtoCoupler™ is controlled through Proto-Sound® microprocessor, it doesn’t require an uncoupling track section or modification to your layout... -
Page 8: Cab Chatter Sounds
Throttle Down From each time the voltage is reduced Squeaking Brake Sounds High Voltage To Low from high to low. Some practice may be required to synchronize the playing of the brake sounds with the movement of the MTH SD70MAC Operating Instructions... -
Page 9: Tips On Using The Squeaking Brake Sounds
engine. It is not uncommon for the engine to stop before the 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. -
Page 10: Freight Yard Sounds (Fys)
Seconds, Listen For a Horn Blast or Air Release, then Remove your Finger from the Button. Press Bell Button Again Quickly to Stop Bell Chime. Your train is now ready for you to play the FYS. MTH SD70MAC Operating Instructions... - Page 11 Change/Press Direction- The Train Will Remain In Horn Whistle Neutral. You Will Hear Closing Doors, Horn Blast, Direction a Few Bell Chimes and Engine Departs in the Direction the Engine First Stopped. For more detailed FYS instructions, read the following. MTH SD70MAC Operating Instructions...
- Page 12 Listen For The Interrupt the transformer Press & Hold Horn/Whistle Blast The Horn/Whistle Button After 3 Seconds throttle to enter the next For 3 Seconds MTH SD70MAC Operating Instructions...
- Page 13 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. FYS confirms reverse is entered by playing a sound highlight best described as a rumbling sound. MTH SD70MAC Operating Instructions...
- Page 14 Otherwise the engine will just sit still until you increase the transformer throttle setting on the transformer. However, don’t set the throttle setting too high or the engine will go racing away faster than you might expect. MTH SD70MAC Operating Instructions...
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Page 15: Tips On Using Fys Features
In Event 4, you cannot interrupt FYS until after the engine begins to move. Interrupting the throttle before the engine begins to move has no effect on the locomotive’s operation. MTH SD70MAC Operating Instructions... -
Page 16: Reverse Unit Lockout Operation
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 23 for details), only the bell rings. MTH SD70MAC Operating Instructions... -
Page 17: Self-Charging Battery Backup System
ON in the NEUTRAL position for 6 hours. Note: When charging the battery in neutral, if your trains contains a Smoke Unit should be turned OFF to prevent damage to the wick and the heating elements. MTH SD70MAC Operating Instructions... -
Page 18: Proto-Sound® Volume Adjustment
For information on operating the RESET volume adjustment option, see the section entitled “Programming Proto-Sound® RESET Options” on the following pages. Proto-Sound® Proto-Sound® Adjustment Knob Adjustment Knob Figure 4: Adjusting The ProtoSound® Volume and selecting the ProtoCoupler direction. Proto-Coupler® Selection Switch MTH SD70MAC Operating Instructions... -
Page 19: Using "Reset" To Program Proto-Sound
(though you may not hear the air-release sounds) 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. MTH SD70MAC Operating Instructions... -
Page 20: Setting The Engine Volume
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 Whistle button. -
Page 21: Programming For Horn In Neutral Operation
The settings for Reset 10 are 1 Bell = ON, 2 Bells = OFF. When the desired setting is reached, lock the changes by interrupting the throttle and cycling the engine into forward. MTH SD70MAC Operating Instructions... -
Page 22: Programming For Fys Operation
The settings for Reset 28 are 1 Bell = ON, 2 Bells = OFF. When the desired setting is reached, lock the changes by interrupting the throttle and cycling the engine into forward. MTH SD70MAC Operating Instructions... -
Page 23: Activating Remote Lockout Control
Proto-Sound system has restored Interrupt The Throttle all settings to factory default Listen For 3 Clank To “Lock-In” And 3 Clink Sounds The Default Setting settings. Lock the changes by interrupting the throttle and cycling the engine into forward MTH SD70MAC Operating Instructions... -
Page 24: Oil & Lubrication Instructions
(See Figure 7). Grease can then be applied into the gear box using a grease tube dispenser. Motor Mount Screw (G) Figure 7: Lubricate The Tender Chassis Trucks MTH SD70MAC Operating Instructions... -
Page 25: Traction Tire Replacement Instructions
If a twist occurs, the tire will have to be removed and reinstalled or a noticeable wobble in your engine will occur when operating the locomotive. In addition, it is important to make sure that the tire is MTH SD70MAC Operating Instructions... -
Page 26: Light Bulb Removal & Replacement
Lubrication section on the proceeding pages. Once the cab has been separated from the chassis, gently unplug the bulb’s wiring harness from the socket on the constant voltage circuit. Replacement bulbs are available directly from MTH Electric Trains. MTH SD70MAC Operating Instructions... -
Page 27: Trouble Shooting Proto-Sound® Problems
The bell won’t work with a separate bell button. Program Proto-Sound”) and press the whistle button until the bell sounds two dings. Simply turn the throttle off and then on again to lock in the new setting. Also check the bell button wiring. MTH SD70MAC Operating Instructions... - Page 28 The sounds seem distorted, especially when the creating the distorted sounds. Try turning the volume whistle or bell is activated. control knob located on the bottom of the chassis counter clockwise to reduce the overall volume level. BATTERY PROBLEMS REMEDY MTH SD70MAC Operating Instructions...
- Page 29 FYS PROBLEMS REMEDY MTH SD70MAC Operating Instructions...
- Page 30 Whenever FYS is enabled, pressing the whistle and event, the bell and whistle functions are disabled until bell buttons has no affect. either the FYS events have been completed, or the engine is shut down for 3 or more seconds. MTH SD70MAC Operating Instructions...
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Page 31: Proto-Sound Reset Feature Chart
4 Clanks/3 Clinks Horn In Neutral Horn In Neutral OFF 5 Clanks/0 Clinks RESERVED FYS Enabled FYS ON 5 Clanks/3 Clinks Lockout Enabled Lockout OFF 8 Clanks/0 Clinks Squeaking Brakes Brakes Always ON 9 Clanks/0 Clinks MTH SD70MAC Operating Instructions... -
Page 32: Transformer Wiring Chart
8-20v 275-Watt Standard MTH Z4000 Black 5-22v 390-Watt Electronic *Proto-Sound® needs over 14 volts of power to work properly. Overloading or using in-line accessories with this transformer may lower the peak voltage below Proto-Sound® minimum requirements. MTH SD70MAC Operating Instructions... -
Page 33: O-31 Operation
O-31 OPERATION While the SD70MAC engine is more than capable of operating on O-31 curves and switches, you may find that certain light freight cars are prone to derailing when being pulled or pushed by the SD70MAC through O-31 switches. Should this occur, we suggest adding weight to the cars making them heavier and less likely to derail. - Page 34 ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ MTH SD70MAC Operating Instructions...
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Page 36: Service And Warranty Information
Gateway Drive, Columbia, MD 21046, 410-381-2580 (FAX No. 410-423-0009), or on the internet at service@mth-railking.com or our web site, www.mthtrains.com, stating which product you have, when it was purchased and what seems to be the problem. You will be given a return authorization number to assure that your merchandise will be properly handled upon its receipt at MTH.
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