The built-in diesel sound
effects circuit
This locomotive comes from the
factory with a built-in sound effects
circuit that can be turned on only in
Märklin Digital operation with the
6021 Control Unit.
The example is fitted with 1 motor
and 2 different horns, the noise of
which can also be switched on in the
model. Apart from the pure engine
noise, the electronic system can also
implement various auxiliary noises,
which are casually distributed within
the noise pattern.
This sound effects circuit was tuned
at the factory for this locomotive.
The following settings can be changed
by you:
• Total volume.
• Volume relationship between the
diesel sound effects and the
locomotive's horn.
• Relationship of the sound effects
circuit to the maximum speed set
on the digital decoder.
When changing the maximum speed
on the locomotive decoder (=> Set-
ting the Mode of Operation) the sound
effects circuit must also be adjusted
to the new conditions. No adjust-
ments in the sound effects circuit are
required when changes are made in
the acceleration and braking delay.
The adjustments to the sound effects
circuit should be checked by opera-
ting the locomotive. The 6021 Con-
trol Unit must be used to control the
locomotive. We recommend setting
up a small test track (circle or oval
with a minimum radius of 1,020 mm
or 40-5/32") or a test stand with a
Control Unit connected to it. We
recommend setting the acceleration
and braking delay at the minimum
value during the adjustment work.
Important: You can carry out adjust-
ments to the sound effects circuit
your-self. Damage to the potentio-
meters on the circuit board caused
by too much force applied to them
are not covered by the warranty.
Important: Check the setting of the
jumper (bridge plug) on the circuit
board. The jumper must be plugged
in the "EIN" ("ON") position.
2
19
Operation
Jumper
Aus/Ein
P1
P2
P3
LED
