User Manual

ManualsBrandsRoundhouse ManualsHobbyHO RTR 4-4-0 w/DCC & Sound, D&RGW #400

Analog use

Locomotive does not make sounds or respond

when power is applied to track. *Check that

power pack is plugged in, and that wires to track

are connected properly. Turn throttle to zero

position, turn the power packs power switch to

off, wait a few seconds, then try again as in the

analog operation section of the instructions.

Sounds/lights do not activate with transmitter

all the time. * Check battery level, change if

needed. Different atmospheric conditions and/or

metal pipes, conduits, and screen wire scenery

can cause range problems, try holding the trans-

mitter antenna close to or on one of the running

rails if the locomotive is far away from you. Be

patient, there is a slight delay due to the radio

transmitter. Just press the button once and wait

a few seconds. If you press the button a second

time, the decoder reads it as turn on function/turn

off function and the function will seem as if it is

not working.

Locomotive does not idle [starts moving at a low

voltage] or locomotive makes idling sounds but

does not move. *The decoder has a memory, and

may not have been shut down correctly after it’s

last use. Turn the throttle up slowly to place loco-

motive in “True Idle.” You can conﬁrm the “True

Idle” setting by changing the direction switch on

your power pack. You will hear an audible steam

noise and the headlight will change direction. If

the headlight does not change direction, you are

not in “True Idle.” Turn the throttle voltage down

slightly and try again. Once you are sure you are

in “True Idle,” ﬂip the direction switch again to

reset the decoder. If you followed these steps the

locomotive should run properly.

DCC use

Locomotive runs on address #3, but will not

take a 4 digit address. * Some DCC systems do

not have enough power on the program Track to

program sound decoders. See back of exploded

drawing for instructions on Programming a 4 digit

address on the main.

Locomotive responds to Bell/Whistle functions

but does not move. *CV #29 is not programmed

correctly for either a 2 digit address or a 4 digit

address. Input a value of “2” in CV29 for a 2 digit

address, or a value of “34” in CV29 for a 4 digit

address.

Locomotive idles but does not move or respond

to functions. *Make sure you did not program the

locomotive into an advanced consist [CV #19]. In

your DCC system’s “Program CV Mode”, input a

value of “0” into CV #19.

Any misguided programming of values in the DCC

mode can cause a decoder to malfunction. Always

try to ﬁrst set the decoder back to it’s factory de-

faults by using CV #125. If this does not work, try

programming the following CVs

with the following values: CV1=3, CV19=0,

CV29=2. If this does not work, try running the

locomotive in the Analog DC Mode. If the locomo-

tive runs in analog, chances are it will run in the

DCC Mode, but the programming of the decoder is

way off.

Reset the decoder in the Analog DC Mode. Perform

the following steps using a DC power pack:

Turn power packs on/off switch to on.

Slowly bring up throttle until you hear hissing/

idling sounds.

Leaving throttle in it’s position, turn power switch

off.

Hold down program button [#3/coupler] on

transmitter while turning power switch back on.

You will hear decoder say “Program”. Release

transmitter button, decoder will say “Program”

again. This conﬁrms you are in the analog d.c.

program mode.

Wait 2 seconds, press the program button

[#3/coupler] again and listen for “Program”.

Perform step #5 four more times [total of 5

times].

After you hear the decoder say “Program” after

the 5th time, you will hear a steam release. This

will conﬁrm that the decoder has been reset

to it’s factory defaults [for both DC and DCC

modes].

Try running the locomotive again on DCC.

Programming for DCC Operation – Digital Mode

This decoder supports all program methods including register mode, paged mode, CV programming, direct mode

and programming on the main (OPS mode programming). Program the locomotive the same way you would pro-

gram any other NMRA compatible decoder with your DCC system.

Note: Due to the nature of dual function decoders, it does not support the CV read back feature.

The Dual-Function decoder is manufactured by Model Rectiﬁer Corporation for Athearn Trains.

1550 Glenn Curtiss Street

Carson, CA 90746

www.athearn.com

76141.1 09/15/06

STEAM LOCOMOTIVE

WITH DC/DCC

SOUND SYSTEM

FACTORY

VALUE

RANGECV REGISTER

Short address

R1 1-127 3CV1

Start voltage

R2 0-32 0CV2

Acceleration

R3 0-32 8CV3

Deceleration

R4 0-32 8CV4

Top voltage

- 0-32 32CV5

Basic configuration

Page number

- -

2CV29

Manufacturer Version #

R7 - 32CV7

Manufacturer I.D.

R8 - 143CV8

Long address upper byte

- 192-231 192CV17

Long address lower byte

- 0-255 3CV18

Advance consist address

0-127

0-1

0CV19

When CV-21=0, all accessory functions will follow

its own address. When CV-21=1, all functions

will follow the consist address

0CV21

Whistle type

0-11 5CV50

Sound on/off (0=off)

0-1 1CV49

Whistle volume

0-3 3CV51

Bell type

0-3 3CV52

Bell volume

0-3 3CV53

Bell ring rate

0-50 10CV54

Chuff type

- 0-5 4CV55

Chuff volume

0-3 3CV56

Brake squeal volume

0-3 1CV57

Air release volume

0-3 3CV58

- --

Fire box door volume

0-3 3CV60

- --

User identification number

- 0-255 0CV105

User identification number

0-255 0CV106

Conductor volume

0-3 3CV112

Directional light enable

0-1CV113

- --

1 (enable)

Shoveling volume

0-3 3CV118

Air hose fire volume

0-3 3CV119

Chuff rate

0-30 12CV120

Chuff start point adjustment

0-7 3CV121

Speed curve select (0=linear, 1=slow increase at

slow speed, 2=fast increase at slow speed

0-2 0

CV124

Factory default setting: Programming to 1 will

restore all CV’s to default setting

- 0

CV125

DESCRIPTION

Summary of content (2 pages)

PAGE 1
Analog use 1. Locomotive does not make sounds or respond when power is applied to track. *Check that power pack is plugged in, and that wires to track are connected properly. Turn throttle to zero position, turn the power packs power switch to off, wait a few seconds, then try again as in the analog operation section of the instructions. 2. Sounds/lights do not activate with transmitter all the time. * Check battery level, change if needed.
PAGE 2
MDC Steam Locomotive Instruction Guide Your new MDC Steam Locomotive comes factory equipped with a state-of-the-art Dual Function decoder. This enables your locomotive to operate with any NMRA compatible DCC system as well as with any regular DC Train Control [HO power pack]. It will automatically sense the type of control you are using, without you having to set it up for the required operation.