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Topic:
Common solutions
Poor radio recep-
tion:
The radio tuner finds
no broadcaster or the
reception is poor.
The unit does not
turn on.
XOMAX
For problem-solving regarding the radio reception it is
important to know the type of the antenna of your vehicle.
Here are the possible solutions for each type of the antenna:
Type 1 – passive antenna:
We recommend you to substitude the existing antenna by the
larger and therefore more efficient one.
Shark fin or rod antennas (under 5 cm) are definitely insuffi-
cient.
Type 2 – active antenna:
The vehicle provides no current for the active antenna. In this
case a phantom power is required, which provides the active
antenna with the external power supply.
Type 3 – active antenna with diversity system:
The unit provides no current for the active antenna and has
no diversity support. For this type of antenna is required the
phantom power with an integrated diversity system.
Note:
A phantom power is not to be confused with an antenna
amplifier, which is far less efficient.
This problem is in most cases caused due to a wrong connec-
tion of the ISO cable.
Please review the pin assignments of the ISO plug and ISO
socket. Pay attention to the proper connection of the ignition-
and steady plus and correct the discrepancy if required.
Note:
Though the design of ISO port is standardized, it's pin
assigment is not and may vary. Thus in case of mismatch
of connections due to different pin assignments a simple
plug'n'play connection may lead to grievous errors.
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