Appendix
Appendix
Troubleshooting
Some malfunctions can be resolved without outside intervention. The fol-
lowing table provides a list of such malfunctions. All other malfunctions
should be reported to the relevant service personnel.
Error
No display.
You cannot dial a
phone number.
No reaction to key-
stroke.
De-crescendo tone
sequence during
input.
The line "Base n"
flashes (n= 1 - 4).
No ringtone on the
handset.
Nothing audible dur-
ing a call.
136
Possible cause
Handset is not
switched on.
Batteries are empty.
Handset is locked.
Keypad lock activated. Press the hash key until
The key is stuck.
An incorrect entry was
made.
The handset is outside
the base radio range;
radio signals too weak.
Handset is not regis-
tered.
Intervals between syn-
chronization attempts
are too long.
Ringer is deactivated.
"Do Not Disturb" is acti-
vated.
The "R key" was
pressed – the micro-
phone and the ear-
piece inset are muted.
Remedy
Press the On-hook key
until confirmation is
received.
Charge or replace the
batteries.
Unlock handset.
confirmation is received.
Release the key.
Repeat key sequence
while watching the dis-
play; where applicable,
consult the operating
manual.
Come closer to the base
radio range, change your
position.
Register handset.
Switch off the handset
and switch it back on
again.
Activate ringer.
Deactivate "Do Not Dis-
turb".
Press the "Delete" dis-
play key to re-activate
the microphone and the
earpiece inset.