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Appendix
86
Troubleshooting
Power failure
The device is not operational during a power failure. The internal clock stops. But all
settings are retained so that the previous status is reset when power returns. You
may need to reset the time.
Using the following table try to define the cause of a problem and solve the error.
Problem Possible cause Remedy/Recommendation
No display. No contact with mains power
supply.
Check all cables and plugs. If
necessary try another plug.
Display too weak or dark. Contrast set incorrectly. Set contrast.
No sound. Volume set to zero. Adjust volume.
OGM symbol flashing. No OGM recorded. Record an outgoing message.
No answer, no monitoring. No contact with connection
cable.
Check all cables and plugs.
No response in PABX. No call signal switched on. Check PABX programming.
Buzzing or other interference
on loudspeaker.
Interference from cordless
telephone, monitor etc.
Chang installation location.
Messages not recorded. Device is set to OGM without
ICM option (message only).
Change or re-record OGM.
No answer, subsequent
telephone does not work.
Wrong connection cable,
wiring boxes incorrectly wired.
Only use original cables, check
wiring boxes (if nec. get a
specialist to check).
Incorrect or no connection
when dialling from PABX.
The prefix for the public
network has not been entered.
Enter prefix.
No automatic call-back on
busy
Call back code not entered,
network operator or PABX dies
not support the function or
function is not authorised.
Enter call back code.
Check with network operator
or PABX as to whether
function is supported or needs
to be authorised.
Can not set up call forwarding Call forwarding settings are
missing or incorrect.
Network operator or PABX
does not support the function
or function is not authorised.
Make, check and if nec.
change settings. Check with
network operator or PABX as
to whether function is
supported or needs to be
authorised.