Installing the loco-decoder 75100
Motor Connections
Remove reverser. Disconnect all wires leading from brush assembly to it, chassis or pickup-shoe,
and to the field-coils tabs.
The decoder leads have to be connected as follows: The green and blue wire to the field-coils
tabs, the black wire to the brush assembly, the brown wire is attached to the chassis, and the
red wire to the pickup-shoe. RF interference suppressors and capacitors should be retained.
Lamp Connections
Solder the gray wire to the front light and the yellow one to the rear light. Should you want direction-
independent lighting, the two wires have to be joined. The lamps other lead has to be kept
connected to the locos chassis.
In case the lamps are lit oppositely to direction, interchange the green and blue wires.
Ancillary Outputs
Outputs A1 and A2 may switch a smoke generator or interior lighting. Their wires have to be
soldered to the decoders pcb as shown in the adjacent sketch. Common return in Märklin locos
normally connects to chassis. Only smoke-generators that have an insulated housing need to
be connected to the black lead as well.
Important: Employ only smoke-generators suited for digital operation!
Remote uncoupling setup (Telex)
Both telex magnets have to be wired in series. Of the remaining two cables one must be soldered
to either A1 or A2, the other must be connected to the black lead.
Fixing the unit in the model
Use the supplied adhesive pad for fixing where there is room for the decoder. The pad keeps
the unit insulated and fixed in its position.
In case the loco has a high current consumption, we recommend to fasten it directly to a metal
chassis frame with hot glue. All common brands are suitable for this.
Check for proper wiring after installation with a wiring checker or an ohmmmeter. Make sure that
the shell will not touch the unit and that no wires can be caught when shell is installed.
Programming of Uhlenbrock Decoders by Intellibox
The most comfortable way to program a decoder is offerd by the Intellibox. A menu-driven
programming mode in plain english is provided. Programming is carried out by selecting the menu
for non-compensated decoders (750/770, 75100 or 754xx).
You find exact instructions in the Intellibox handbook.
Programming of Uhenbrock Decoders by LOKTOOL
This computer routine is used to program Uhlenbrock decoders by applying a Märklin central unit
in connection with a Märklin interface. See reverse for a brief description.
Note: Output A2 is available in Gauge I-mode
(extended Motorola data format) only!
blue
green
brown = chassis
yellow
to A1 or A2
black
grey
red
driving direction
b
A short circuit from motor brushes or ancillary outputs
to pickup shoes, frame, or wheels may destroy the device!
