If A Problem Occurs - Sennheiser WiCOS Instruction Manual

If a problem occurs ...

If a problem occurs ...
Problem
Access point cannot be
switched on even though it
is connected to the DC
power supply
Web server cannot be
called up
Conference unit does not
establish a transmission
link with the access point
Poor radio communication
between access point and
conference units
Battery pack cannot be
recharged
Charge capacity drops
rapidly
After switch-on, the
delegate units only indicate
requests to speak
Conference unit is
activated but the
microphone does not work
If a problem occurs that is not listed in the above table or if the problem cannot be solved with the proposed
solutions, please contact your local Sennheiser partner for assistance.
To find a Sennheiser partner in your country, search at www.sennheiser.com under "Service & Support".
82
Possible cause
The DC power supply is not suitable
(e.g. you are using the WiCOS NT-BA
charging power supply).
The network connection is not correctly
established.
The IP address of the access point has
been changed.
The transmission range is exceeded.
The access point uses an encryption
key that has not been assigned to the
conference unit.
The access point is just scanning the
frequency bands.
The transmission range is exceeded.
The antennas are wrongly aligned or
wrongly connected.
The charging power supply is not
suitable (e.g. you are using the
WiCOS NT-AP DC power supply ).
The battery pack is defective.
The battery pack is aged.
You are using WiCOS D or WiCOS DV
delegate units exclusively. The
conference mode chosen requires a
chairman unit for assigning the
"speaking right" (e.g. "With request").
The microphone is wrongly connected.
Possible solution
Use the WiCOS NT-AP DC power supply for
powering the access point.
Make sure that the access point is correctly
connected to the network/the computer
(see page 22).
Load the factory default settings and call up the
web server using the address 192.168.0.10
(see page 44).
Reduce the distance between conference units and
access point. Place the access point as centrally and
as high as possible (see page 23).
Set the encryption key of the access point to
"default key" (automatic encryption)
(see page 67).
Assign the conference unit the same custom
encryption key that is used by the access point
(see page 67).
Wait until the frequency bands have been scanned
(this takes approx. 60 seconds).
Reduce the distance between conference units and
access point. Place the access point as centrally and
as high as possible (see page 23).
Increase the transmission power or set the
transmission power to "Auto" (see page 53).
Only use the supplied antennas and make sure that
they are correctly connected to the access point.
Always align the antennas vertically and parallel to
each other (see page 23).
Use the WiCOS NT-BA charging power supply for
charging the battery pack.
Check the status of the charging electronics (see
page 26) and, if necessary, replace the defective
battery pack by a new one.
Replace the aged battery pack by a new one.
Use a chairman unit to assign the "speaking right"
or set a conference mode which does not require
the assignment of the "speaking right" (see
page 57).
Make sure that the microphone is correctly
connected to the conference unit (see page 25).