Nokia 6090 User Manual page 43

Recommendations for the installation of the
Nokia 6090
Warning! Only qualified personnel should service the car phone
or install the car phone in a vehicle. Faulty installation or service
may be dangerous and may invalidate any warranty which may
apply to the unit.
Note: When installing the car kit in Australia and New Zealand,
the 6090 should be installed in accordance with AS/NZS 4346.
• Microphone installation
The recommended position for the microphone should be the
top of the A-pillar or, alternatively, near the back mirror in
the middle of the car. The microphone should be pointed in
the direction of the driver's mouth with a optimum distance
of 30 cm. Streams of fresh air should not be directed at the
microphone and the microphone cable should not be laid in
the ventilation system. Use the provided soft material to con-
nect the HF microphone to the A-pillar in order to avoid any
noise coupling from the car to the microphone.
• Loudspeaker installation
The best position for the RF speaker is in the lower front-seat
passenger area.
• Audio line out
Handsfree can also be provided by using the audio line out
signal of the 6090 in combination with an appropriate FM
car radio supporting the audio line-in function which enables
use of the car loudspeaker system instead of using the deliv-
ered handsfree loudspeaker HFS-10. For good performance,
use the front loudspeaker only and adjust the volume via the
6090 handset. So that keypad and warning tones may be
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1999 Nokia Mobile Phones. All rights reserved.
audible, the external handsfree loudspeaker also has to be
installed as described above. In case the FM car radio is not
equipped with a connector for the audio line-out signal (see
picture), the connector may be removed in order that the two
wires can be directly connected to the FM car radio line-in.
Since the 6090 audio line-out provides a differential signal
instead of a +/- signal, the wires may be connected either way.
Warning! Don't connect the handsfree loudspeaker cable to
the FM radio line-in. You might destroy the FM radio. Always
use the audio line-out cable provided!
• Connection to the car battery
Take the voltage directly from the car battery and use the
cable supplied with the sales packages. This cable includes
fuses to protect the phone. If you do not so, noise may
impact the quality of the 6090 loudspeaker. The description
of the cable and its colour may be taken from the attached
illustration.
• GSM antenna
Note: It's not recommended to use any combined GSM-
phone/FM-radio antennas. Normal combined antennas might
not be designed for 8 Watt output power of the GSM phone.
The frequency switch of the antenna maybe destroyed and
the FM-radio reception quality might suffer. Always use a
separate GSM900 antenna.
• Connect only the 6090 handset to the system connector as
shown in the installation picture.
• When installing the radio unit, ensure a sufficient air supply
(e.g. not in a box under the carpet).
• Do not extend the system cable by any wires.
• Use only correct fuses.
Installation
43