MRC 0001636 User manual

N Gauge Synchronized
Diesel Sound Decoder with
19 Accessory Sound Functions
Item #0001636
Thank you for purchasing our highly advanced DCC locomotive
sound decoder. Combined with any DCC System, our new
decoder with authentic diesel sound truly will make your model
railroad come to life.
•Synchronized diesel prime mover with randomly
associated locomotive sounds
•User selectable 15 different horns and 8 bells
•19 accessory functions allowing more sound control
than ever
•Programmable individual sound volumes
•0.75 amp capacity
•Programmable for either 2-digit (1-127) or 4-digit
(1-9999) addresses
•Programmable start voltage
•Programmable acceleration rate
•Programmable deceleration rate
•Programmable top voltage
•Programmable 14, 28, 128 speed steps
•Selectable factory default speed curve
•Directional lighting (FO) at 0.2 amp rate
•Supports advanced consisting (CV19)
•Supports programming on the main (OPS mode)
•Compatible with NMRA DCC standards
•Complies with Part 15 of FCC
•13x18mm speaker included
•PCB size: 70 x 9.2 x 5.8mm
• Directly replaces most Atlas N scale loco’s PC boards
Note: Bell, Dynamic Brake and Rail Wheel Clack cannot play at the same time. If you
active the Bell sound [F1], while either the Dynamic Brake or Rail Wheel Clack
sounds are activated, the Bell sound will override the other 2 sounds. Rail Wheel
Clack cannot play while the loco is in idle. When you turn off Dynamic brake and
Rail Wheel Clack sound there will be one second delay.
TROUBLE SHOOTING
The MRC 0001636 N diesel sound decoder should perform well with all DCC
systems. See your DCC system manual to learn how to program and operate the
decoder. For more information about register/CVs and their functions, please
refer to the NMRA DCC Standard & Recommended practices, RP-9.2.2 this is
available directly from the NMRA or their website at www.nmra.org.
Due to the nature of all sound decoders, the CV read back is not 100% correct. So
this feature is not supported in the decoder. This is not a defect of the decoder or
your DCC system.
Whenever the decoder doesn’t work please use program track to re-program the
loco address or program CV# 125 with value 1 to restore the decoder to factory
setting. This should bring the decoder to life.
FCC COMPLIANCE
This device complies with the part 15 of FCC rule. Operation is subject to the
following two conditions. (1) This device may not cause harmful interference,
and (2) This device must accept any interference received, including interfer-
ence that cause undesired operation.
RETURN PROCEDURE
If it should become necessary to return your decoder, unplug the decoder and
return the decoder only. Please include a letter (printed clearly) with your name,
address, a daytime telephone number, and a detailed description of the problem
you are experiencing. Please also include a $15.00 check for shipping and
handling. Be certain to return only the decoder.
Send the decoder to:
Model Rectifier Corporation
Attn: Parts & Service
80 Newfield Avenue
Edison, NJ 08837-3817 U.S.A
PROGRAMMING
This decoder supports all programming methods including: register, paged CV,
direct CV, and programming on the main (ops mode programming).


2005 MODEL RECTIFIER CORPORATION
80 NEWFIELDAVENUE
EDISON, NJ 08837-3817
NOTE: Due to limitations in older DCC systems, some of the sound functions or
light effects functions may not accessable. ALSO, you might be limited to
factory default CV values. Printed in USA
CV Register Description Range Default
CV1 R1 Short address 1-127 3
CV2 R2 Start voltage 0-32 0
CV3 R3 Acceleration 0-32 0
CV4 R4 Deceleration 0-32 0
CV5 --- Top voltage 0-32 32
--- R6 Page number --- ---
CV29 R5 Basic configuration --- 2
CV7 R7 Manufacturer version num ber --- 32
CV8 R8 Manufacturer ID --- 143
CV17 --- Long address upper byte 192-231 192
CV18 --- Long address lower byte 0-255 3
CV19 --- Advanced consist address 0-127 0
CV49 Sound on/off(1=on) 0-11
CV50 --- Horn type 0-15 4
CV51 --- Horn volume 0-3 3
CV52 --- Bell type 0-9 3
CV53 --- Bell volume 0-3 3
CV54 --- Bell ring rate 0-50 3
CV55 --- Dies el rum ble volum e 0-3 3
CV56 --- Brake squeal volum e 0-3 3
CV57 --- Dynamic brake volume 0-3 3
CV58 --- Air release volum e 0-3 3
CV59 --- Air pump volume 0-3 3
CV60 --- Safetypop valve volum e 0-3 3
CV61 --- Engine cooling fan volume 0-3 3
CV62 --- Coupling volum e 0-3 3
CV63 --- Random noise volume 0-3 3
CV64 --- Rail wheel clack 0-3 3
CV105 --- User identification num ber 0-255 0
CV106 --- User identification num ber 0-255 0
CV115 --- Auto brake squeal enable/disable 0-1 1(enable)
CV116 --- Coupling sound type 0-2, 2=off 1
CV117 --- Lights enable/disable 0-1 1(enable)
CV119 Coupling fire volum e 0-3 3
CV120 Brake release volume 0-3 3
CV121 random noise enable 0-1 1(enable)
CV122
Diesel sound type (0=off, 1=rpm &
notch synchro to speed, 2=linear rpm
synchro to speed, 3=notch up/down
(F8=notch down, F9=notch up))
0-3 1
CV124
Speed curve select (0=linear, 1=slow
increase at slow speed, 2=fast
increase at slow speed
0-2 0
CV125 --- Factory default setting: Programming to 1
will restoreall CV'stodefault setting
---0
CV21---0
When CV21=0,allaccessory functions will
follow its ow n address. When CV21=1, all
functionswill followtheconsistaddress
---

To test, place the loco on the test track. Select the “Run” mode of your DCC
system and select or acquire address #3. Move up the throttle and the loco
should move forward. Push the light button [F0] and the front headlight should
come on. Change the direction of the loco and the loco should change direction
and the rear headlight (if equipped) should come on. The loco cannot reach full
speed, due to the resistor. If all above occurs, you passed the test. Congratula-
tions!
Do not run the loco for an extended period of time on the test track or
the resistor will overheat.
If your installed decoder does not pass the test, find the problem, correct it and
test it again.
OPERATION
This decoder has start up and shut down feature. You must press any function
key to start up the engine before operating the loco. To shut down the engine
you must bring the loco to idle and then press F8 3 times.
This decoder can also be used in an Electric Type Traction Loco such as Trolley
or GG-1 by turning off diesel sounds. To turn off the diesel prime mover sounds,
program CV #122 with value 0.
If using the MRC Prodigy Advance DCC System, you can use F18 to select
different bells. First use F1 to activate bell. Then use F18 to scroll through 8
different bell sounds. You can use F19 to scroll through 15 different horns.
When using other DCC systems you have to program CV #52 to select bell and
CV #50 to select horn.
There are many more program features available with this decoder. Please refer
to the CV Chart to explore other features of the decoder.
DIESEL SOUNDS CHART
INSTALLATION
It is quite a challenge to install this decoder into an “N” scale diesel locomotive.
You should have some basic electronics knowledge, and some chassis/frame
milling and soldering skills. If you are not sure you can perform this installation by
yourself, you can contact “Aztec Mfg.” Tel: [775] 883-3327, for an aftermarket
chassis.
The body shell, and fuel tank casting must be removed from the chassis, and the
entire frame must be disassembled. Mark the top of the motor with a dab of paint or
permanent marker; remove the original circuit board, motor, driveshafts, bearings,
and trucks.
An area of the fuel tank portion of the frame must be milled out to accommodate the
speaker using a rotary or comparable tool, a wire channel for the speaker wires
should be cut on both frame halves with a cutting disk. Use a small modelers file to
remove any rough or jagged edges from the frame castings.
The speaker wires are coated with a ceramic insulation and are very delicate.
Care should be taken not nick the wires or repeatedly bend them during installation,
as this could damage the insulation, causing a short circuit.
The top portion of each frame half that touches the motor brush tabs
should be insulated with a small piece of clear tape.
The decoder replaces the original circuit board of the locomotive and should fit in
the same location. Assemble one half of the frame first, installing the decoder,
motor, driveshafts, bearings, trucks, and frame spacers. Gently place the other
frame half on top of the completed half, checking clearances and if there is any
binding of the drive mechanism. Correct any trouble spots at this point. Also check
to make sure the motor brush tabs are not touching the frame halves and the clear
tape is correctly positioned at the motor brush tab points to avoid shorting out the
decoder. Now you can install the insulated bolts and nuts to secure both frame
halves together.
Gently route the speaker wires into the channels, fold any excess length of wire
above or next to the decoder and secure with a piece of clear tape.
Re-check installation!!! If at this point you are satisfied with the mechanical
installation of the decoder and all associated parts, it is time to check the installa-
tion on a test track. Do not install body shell until testing is done. See section on
“Making a Test Track”, and “Testing”
Figure 2. shows how to install 0001636 decoder
MAKING A TEST TRACK
Before you begin decoder installation, we strongly recommend building a test
track with a 27 ohm resistor to limit current. Only test your installed decoder on
the test track. The test track may prevent damage from an incorrectly installed
decoder.
Note: The program track is NOT a test track. The program track does not use a
current limiting resistor. So it can’t protect an incorrectly installed decoder.
TESTING
All MRC decoders have been factory programmed with address #3, 28/128
speed steps and maximum top voltage. Never run the installed decoder on
your layout without first successfully running on test track. Otherwise,
you may damage the decoder if it is not wired correctly or if you have not
properly isolated the motor and lights.
*Before installing the plastic fuel tank casting it is recommended that a
few small holes are drilled into the bottom of the casting to let the
sound out. This will give you the best fidelity and volume the decoder
has to offer.
Figure 1. Connection of standard locomotive
mill the oval shape for the speaker
Note: The “x” marks indicate
where to disconnect (isolate)
Function Idle /Moving
Double click F0 Turns on/off accessory lighting
F1 Bell on/off
F2 Horn
F3 Air release w hile moving or prime mover rev up during idle
F4 Coupling/air hose firing
F5 Brake release (idle) / brake squeal (moving)
F6 Dynamic brake on/off
F7 Air hose firing/uncoupling lever
F8 notch dow n (w hen CV122=3)/associated loco sound
F9 notch up (w hen CV122=3)/associated loco sound
F10 Rail w heel clack (only moving)
F11 Traction air compressor
F12 Engine cooling fan
F13* short air release
F14* Associated loco sound
F15* Air pump
F16* Associated loco sound
F17* flange noise
F18* Change bell type
F19* Horn type select *
* Note: Only MRC Prodigy advance DCC has F13-F19 accessory functions
Wrap the whole notch with tape to prevent the motor’s contact from touching the
chassis. Otherwise, the decoder will be destroyed if the motor contact touches
any unwrapped part of the chassis.
wrap tape
wrap tape
Rear light
front light
motor tab
pick up
pickup tab
motor tab
PCB bottom side 13x18mm
speaker
DCC base unit
Power supply
Test track
27 ohm resistor
Figure 3. Diagram of test track
Right side pickup
Front
light Motor Rear light
Left side pickup
X
X
XX
XX