Table of Contents
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Chapter 5
WDU
User's
Manual
Troubleshooting
The
WDU
has
been designed
to
give
years ol
trouble-
free
operation. lf a
problem
does
develop, follow
the
simple steps below before calling the
Customer
SeMce
Center
for
assistianoe.
Table
5-1
Thoubleshooting
kocedures
STEP
ACTION
1
Power down
the VTDU and the
SV/DT.
2
Check
that all connectiors
between
lhe
VTDU and
the
SV/DT
are
securely
lastened.
Chec* to
see
that
power cables
are properly
connected.
Also,
check
that wall connections are
made properly.
3
Check
lhe
setup
ol
the SV/DTs,
as
lollows.
- Both must
be
set to
sync,
full
duplex.
-
Review security
setup leatures
(i.e., SACS).
4
lf the
screen
goes
blank
after
initiation
ol
a
virJeo
call,
verify
that both parties
have
the SV/DT
modem
set
at
'sync'
(synchronous).
5
lf lhere
is
dfficulty
establishing
a
video
linh
consider
redueing
the data
rate
from 9.6
lo
4.8f2.4
KBS
or
consider adjusting
the
modem
ouput
level
(see
Table
*2\.
6
lf
numerous red
asterisks are appearing
in
the
upper
lett-hand
@rner of the display
durirg
a
vkJeo
call,
either
ty
recallirg the party or
lower
the data
rate
ol
the
SV/DT.
7
ll
the image
of
the display
is
dark during a video
call,
try
adjusting
the
hightress
ol the display via
the
Setup
Menu.
8
lf the image is
not
as
sharp
as desired,
select the
Setup
Menu
and
increase
the
Picture
Qr.rality
level.
By
inaeasing
Picture Quality,
the motion
(Frame
Rate)
will
be reduced.
I
For
oplimal handsfree
operation,
only one end
of the
call
(party)
shouH be
in
the
handsfree mode.
Page
56
lssue
1
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Table of Contents
Troubleshooting
