Siemens Gigaset 4000 Comfort, Service Manual

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Information and
Communication Products
Confidential 14 ICM D CC ST
J. Junggebauer
Version 2.1 05/01
Problem 9:
There can be various possibilties.
Example: The client claims that he can’t set up an outgoing call or the ringing volume
is too low. Check the programmed procedures (see chapter Procedures).
Fault code:
D 28 (diverse procedures programmed wrong)
Faulty component: Mobile unit or base station
Problem 10:
The customer claims that the connection breaks off if he tries to go away from the
base station. Inside buildings the range should be up to 50 m, but if there are
ferroconcrete-walls between mobile unit and base station the radio contact can break
off due to absorbtion and reflections at the wall.
Test the range by picking up the handset and going away from the base
station for the desired distance (no walls between).
If there is still a problem check which component is faulty by using a golden device.
Note that 50 m is the maximum range inside buildings. Depending on the design of
the device and how the customer holds it (hand close to antenna and between base
station and antenna decreases range) the range could decrease. The different
Gigaset models have slightly different ranges (best range has the Pocket handset).
Fault code:
D 15 (Range too short)
Faulty component: Mobile unit or base station
Problem 11:
The connection breaks off sometimes during a call.
Æ Check the batteries and insert new ones for testing.
If they are o.k. and there is still a problem use a golden device to find out which
component is faulty.
Fault code:
D 7 (Breaking off calls)
Faulty component: Mobile unit or base station
Problem 12:
The customer claims that there is a poor call quality or that there are noises audible
during a call (humming...). The noises could also be audible on the earphone of the
other subscriber when problems in transmit direction. Check the call quality.
If the customer was right take a golden device to identify the faulty component.
Fault code:
D 9 (Poor call quality (hummung, noises))
Faulty component: Mobile unit or base station