Siemens Hicom cordless EM - Manual (Page 60)

60
Appendix
Before contacting the Service department, you should
attempt to rectify any errors yourself:
Troubleshooting
Caution:
The battery compartment must not be opened under
any circumstances in an Ex zone.
Error Possible cause Remedy
No display. Mobile unit not
switched on.
Battery empty.
Press the On/Off
key.
Recharge the battery
or replace it with a
spare battery.
*))! N>!'! -!
is displayed as soon
as you press the talk
key.
No dial tone; no calls
can be made.
cordless EM is fully
utilised by other
users. Try again later.
No radio connection
possible to base sta-
tion,
 -!
flashes.
The mobile unit is
outside the radio
range of the base
stations; radio signal
too weak.
The mobile unit is not
registered.
Excessive delay
between synchroni-
sation attempts.
Move into radio
range, change loca-
tion.
Register mobile unit.
Switch off mobile unit
and switch it back on
again.
 -!
is displayed,
for example, but no
incoming or outgoing
calls are possible.
Activation/deactiva-
tion not possible.
The mobile unit is
blocked. Remove the battery
compartment lid,
remove and then
reinsert the batteries,
close the battery
compartment lid.