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LokSound decoders have a certain size: make sure,
that the decoder fits easily into the engine, that no
pressure is applied when replacing the housing onto
the chassis and that no wires are squeezed between
other parts. Further, make certain that moving parts
such as transmissions and trucks are not obstructed
by wires.
Never pack a LokSound decoder in foam pads etc.
The decoder heats up during operation; good heat
dissipation is essential.
Electronic components are sensitive to
electrostatic charges: always make sure that
your work place is grounded. If necessary, use
an earthed wristband.
When installing the decoder make sure that no metal
part of the chassis touches any components of the
decoder.
3.1.2 Engines with DCC interface
LokSound is supplied with an NMRA DCC 8-pin plug
as shown in figure 1.Installation in engines with DCC
socket is particularly easy:
• Remove the body! Follow the instructions in the
manual of the engine!
• Remove the analogue plug or directional relay.
Please keep the plug / relay for future use
• Insert the decoder plug with pin 1 (the side with
the red/orange wire) into the side of the socket
that is usually marked with *, +, • or 1. Aviod
bending any pins. Do not rely on the assumption
that the wires have to lead in a certain direction,
the marking is the only valid reference.
• Place the decoder in a suitable location within the
engine and fasten it with double sided tape or a
drop of hot glue.
• Now fix the speaker in a suitable place. See Chapter
3.2.4
user manual LokSound / LokSoundXL V3.5, 4 th edition, 08/2005
Engines without interface
3.1.3 Engines without interface
Not every engine has a digital interface and thus the
wiring becomes more elaborate: Disconnect any
existing wires within the engine and any connection
to the chassis. Both motor contacts must be insulated,
make sure there isn't any connection to the chassis,
the wheels or the pantographs. This may easily be
overlooked particularly in Fleischmann® models!
After installing the decoder please check all
connections with an Ohmmeter and watch
for any short circuits between motor- and
current pick-ups.
How to proceed depends on how the headlights and
other functions are wired in the engine:
a) If headlights and functions are insulated from the
engine chassis (free of any voltage) proceed as
per figure 2.
b) Headlights and functions may be connected with
their common to the track voltage (e.g. almost
all Märklin® -engines and older Fleischmann® or
ROCO® engines) as per figure 3a
Don't get confused by the fact that both figure 2
and 3a show how to wire DC - and coreless motors.
How to wire a universal motor (Märklin®) is shown
in figure 5.
• Connect the red wire to the right rail pick-up (or
center pick-up in AC models), the black wire to
the left rail pick-up (common rails in AC models).
• Connect the backup lights to the yellow wire, the
headlights to the white wire.
• Connect the green wire to the function output
AUX-1. Allocate the function button later.
• Connect the purple wire to the function output
AUX-2. Allocate the function button later.
• Connect the speaker to the two dark-brown wires.
• If the headlights and functions are insulated from
the chassis (see figure 3a) connect all commons
to the blue wire. Make sure the blue wire has no
contact to the engine chassis.
7
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