Polycom VSX Series Administrator's Manual page 181

Symptom
The monitor screen
remains blank when you
pick up the remote
control.
The call connects but you
cannot see or hear
people the far site
although they can see
and hear you.
When using two
monitors, the second
monitor or projector is
blank.
When using two
monitors, the same
picture is seen on the first
and second monitor.
The people at the far site
cannot see you.
The people at your site
show up in silhouette in
the PIP.
Video from your site is
too dark or too light in the
PIP.
© Polycom, Inc.
Problem
The monitor's power cord
is not plugged in.
The monitor is powered off.
The monitor is not
connected correctly to the
system.
The system is configured
for use with a NAT but is
not behind a NAT.
VSX 6000, VSX 7000,
VSX 8000: Only one
monitor is enabled.
The second monitor is
connected to the VCR
video output.
You are the only participant
in a call placed through an
external MCU.
The system is performing a
Near End Loop test.
VSX 3000: The privacy
shutter is closed.
VSX 7000, VSX 8000: You
have selected a camera
that is not connected.
The camera is pointing
toward a source of bright
light, such as a window.
Lighting at your site has
changed within the past
few minutes.
During calls, the camera
adjusts for the lighting at
five-minute intervals.
Chapter 7 - Diagnostics and General Troubleshooting
Corrective action
Connect the monitor's power cord and then power on the
monitor.
Power on the monitor.
Verify that the monitor is connected correctly according to
the installation procedures in the section
Monitor on page 2-16.
Go to Admin Settings > Network > IP > Firewall and
ensure that NAT Configuration is Off.
Enable the system for two monitors on the Admin
Settings > Monitors > Monitors screen.
Connect Monitor 2 to the Monitor 2 connection on the rear
panel of the system.
Wait for others to join the conference.
Press Select on the remote to end the test.
Open the privacy shutter.
Select the main camera.
If it is practical to do so, have the call participants sit in a
location where there is no light source behind them.
Otherwise, go to Admin Settings > Cameras and select
Backlight Compensation.
Pan the camera. It adjusts for the lighting whenever it is
moved.
Connecting a
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