Installation instructions 15
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Symptom What to Check What to Do
Check whether connector is correctly
connected to the cable – use an
efficiency meter
Replace connector
Check if internal and external antenna
base is correctly attached
Attach antenna base
No reception
Check proper working order of
antenna cable
Replace antenna cable
Check speaker’s proper working order Replace speaker
A Phone problem may exist Replace Phone
Other party
cannot be
properly heard Check speaker location Change location
Check microphone and contacts Tighten microphone connector to
the Phone
Check routing of microphone cable Change routing of microphone
cable
Check microphone’s proper working
order
Replace microphone
User is not heard
by the other
party
A Phone problem may exist Replace Phone
Ask whether noise always occurs in
specific geographical areas
Explain that reception trouble
sometimes occurs in transition
between coverage areas
Ask whether noise occurs when
window is open
Explain that the Phone is an
amplifying system that receives all
environmental noise, and therefore
it is preferable to speak with a
closed window
Check whether microphone and
antenna are installed on the same side
If they are, install microphone as
per the instructions
Check whether eye contact exists
between speaker and microphone
If it does, change location
accordingly
Noise is heard
Check for improper voltage
connection – check whether voltages
are connected as per instructions
Change voltage source in
accordance with instructions
Check minus (-) connection Black wire: connect minus to car
body
Phone switches
on and off by
itself Check voltage contacts Tighten loose contacts
Phone does not
switch on after
switching on car
Check fuse. Check connection to
voltage source (green cable)
Replace fuse. Tighten connection
to voltage source. Ensure a
250V/3A fuse is used
Phone does not
switch off after
switching off car
Check connection to power source
(green cable)
Tighten connection to power source
Phone does not
switch on
Check connection to power source.
Check fuse (red cable)
Replace fuse. Tighten connection
to power source