Table of Contents
Advertisement
Malfunction
Teacher screen shows no
display.
's Teacher screen cannot
be sent to all participants.
Monitors of all or some
participants go dark.
Cause
Power supply of the parti-
cipant box of the teacher
station is defective. Local
operation is usually pos-
sible even without a power
supply.
Teacher key is not as-
signed correctly.
"BUS in" and "BUS out"
connectors on participant
box have been inter-
changed or participant box
or patch cable is defective
(only if teacher receives no
image).
Teacher key is not as-
signed correctly.
"BUS in" and "BUS out"
connectors on participant
box have been inter-
changed or participant box
or patch cable is defective.
Instructions for use KaVo EDUnet ULTRA HD
Remedy
▶ Check power supplies and replace according to
need.
▶ Reassign the teacher key.
See also:
2 5.3 Assign the teacher key, Page 23
▶ Use installation plan to identify the affected parti-
cipant boxes (dark screen).
▶ Check the "BUS in" and "BUS out" connectors.
ð
If the connection if active, the LED of the "BUS in"
connector is on. If the connectors of a participant
box have been interchanged, there must be at
least one other participant box whose connectors
have also been interchanged.
▶ If all connectors are plugged-in correctly, replace
participant box or patch cable.
▶ If the connectors have been interchanged, check
all participant boxes and switch connectors as
needed.
▶ Reassign the teacher key.
See also:
2 5.3 Assign the teacher key, Page 23
▶ Send participant screen "To all".
ð
The sender screen is displayed on at least one
other participant screen.
▶ Use installation plan to identify the pertinent parti-
cipant boxes.
ð
The participant work-stations to which the sender
screen is not transmitted are all situated in se-
quence.
▶ Check the "BUS in" and "BUS out" connectors.
ð
If the connection if active, the LED of the "BUS in"
connector is on.
ð
If the connectors of a participant box have been in-
terchanged, there must be at least one other parti-
cipant box whose connectors have also been inter-
changed.
▶ If all connectors are plugged-in correctly, replace
participant box or patch cable.
▶ If the connectors have been interchanged, check
all participant boxes and switch connectors as
needed.
45 / 52
9 Troubleshooting
Advertisement
Table of Contents
