Instructions for use KaVo EDUnet ULTRA HD
9 Troubleshooting
9 Troubleshooting
General information on troubleshooting
▶ Check if all connected participants, the teacher as well as beamer and notebook,
if applicable, are recognised properly.
▶ Turn the room keyboard off and on again.
▶ Check the display of the keys.
ð
Participant keys and "Notebook" key are on.
ð
The "Teacher" key flashes quickly, the "Beamer" key flashes slowly.
ð
If, subsequently, only the three group keys are on, the assignment of keys is cor-
rect.
In case of error
▶ Reassign all keys.
See also:
2
5.2 Assign the participant keys, Page 23
2
5.3 Assign the teacher key, Page 23
2
5.4 Assign the group keys, Page 24
2
5.5 Assign the beamer key, Page 24
2
5.6 Assign the notebook key, Page 25
▶ If there is an image transmission error, identify the corresponding work-station
based on the installation plan.
Due to the ring system wiring, the screen contents are always sent from one parti-
cipant box to the next following the ring.
▶ Identify defects and/or defective participant boxes, power supplies or wiring prob-
lems based on the installation plan by displaying the various participant screens
and/or sending screen content "To all".
▶ Make sure that the "BUS out" connectors of the participant boxes are always con-
nected to "BUS in" connectors of the subsequent participant box.
ð
If image transmission is active and functional, the "PWR" and "LINK" LED are on.
Malfunction
Cause
Remedy
Operation impaired at indi-
vidual work-stations.
The bus cable plug is
loose at an unaffected unit.
▶ Make sure that all plugs are connected firmly.
Defective computer.
▶ Check the function of the computer without the
participant box and troubleshoot the problem on
the computer, if necessary.
Participant box or bus
cable is defective.
▶ To find a defective part, exchange the participant
box and bus cable one-by-one. For this purpose,
make network smaller by moving the terminating
resistor connectors.
The keyboards or mice
cannot be remote-con-
trolled for all the participant
computers, whereas the
mice and keyboards work
in local mode.
Different or special mice
and keyboards.
▶ Use identical mice and keyboards. Do not use any
special mice and keyboards.
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Summary of Contents for EDUnet ULTRA HD
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