Troubleshooting - Siemens HKW-600 Manual

14 of HKW-600 en, A31008-H6551-A102-1-4W28 (12.08.2004,
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14

Troubleshooting

Car Kit does not work
• Check line connections
• No operating voltage, check
line connection
• Phone not on or connection to
Car Kit not active
• Check fuses
• Operating voltage too high or
too low
Loud background noise at called
party's end
• Microphone installed in the
air flow of the sunroof, win-
dow or ventilation
• Distance from micro-
phone/microphone cable
to phone < 50 cm
Poor voice and audio quality
• Car Kit outside permitted
operating temperature
• Volume too low (adjust vol-
ume via phone)
• Connection to radio (phone-in
mode): Phone volume too
high (reduce volume via
phone and then increase it if
necessary via radio)
Loud echo
• Distance between the micro-
phone and loudspeaker < 1m
Weak microphone signal (your part-
ner on the phone barely hears you)
• Distance from microphone to
the user's mouth > 80 cm
• Microphone not pointed at
speaker
Poor reception quality
• No network available
• Alter the phone's position
• If your car is fitted with metal-
lised windows, this may im-
pair the reception of the
phone. Observe the vehicle
manufacturer's recommenda-
tions and install the relevant
(external) antenna or an op-
tional mobile holder.