Siemens 150 E User Manual

Some malfunctions can be resolved without outside intervention. The 
following table provides a list of such malfunctions.

No display.

Mobile telephone not 
switched on.

Press on-hook key un-
til confirmation tone 
sounds.

Batteries empty.

Charge or replace bat-
teries.

No reaction to key-
stroke.

Keypad lock activat-
ed.

Press hash key until 
confirmation tone 
sounds.

De-crescendo tone 
sequence during in-
put.

An incorrect entry 
was made.

Repeat key sequence 
while watching the 
display; where appli-
cable, consult the op-
erating instructions.

The following ap-
pears:

The mobile telephone 
is outside the base ra-
dio range; radio signal 
too weak.

Move into radio 
range, change loca-
tion.

Mobile telephone not 
registered.

Register mobile tele-
phone.

Interval between syn-
chronisation attempts 
are too long.

Switch off handset 
and switch it back on 
again.

No ringer at the mo-
bile telephone.

Ringer is deactivated. Activate the ringer.

Nothing audible dur-
ing a call.

The left side of the 
control key was 
pressed – the micro-
phone and the receiv-
er inset are muted.

Press the "Go Back" 
display key to re-acti-
vate the microphone 
and the receiver inset.

The following appears 
immediately after the 
talk key is pressed:

No dial tone available; 
no calls can be made.

Hicom cordless E is 
being used by other 
users.

Repeat call later.