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User Guide for the Polycom VVX 1500 C Business Media Phone for Cisco Unified Communications Manager (SIP)
5 - 6
Troubleshooting Display Issues
Symptom Problem Corrective Action
There is no display.
The display is incorrect.
The display has bad contrast.
Power is not correctly applied to
the phone.
• Check that the display is illuminated.
• Make sure the LAN cable is inserted
properly at the rear of the phone (try
unplugging and re-inserting the
cable).
• If using Power over Ethernet (PoE),
have your system administrator check
that the switch is supplying power to
the phone.
Outbound or inbound calling is
unsuccessful.
• Place a call to the phone under
investigation. Check that the display
indicates incoming call information.
• Lift the handset. Ensure the dial tone
is present and place a call to another
extension or number. Check that the
display changes in response.
The display flickers. A certain type of older
fluorescent lighting causes the
display to appear to flicker.
• Move the phone away from the lights.
• Replace the lights.
The touch screen turns off too
frequently.
The touch screen is always off
when I arrive at work.
The phone’s power saving
settings are not set correctly.
Adjust the phone’s power-saving settings
(for example, office hours, timeouts, and
user detection settings). For more
information, see Updating Power Saving
Settings on page 2-36.
The screen saver no longer
displays.
The USB flash drive has been
removed.
The Screen Saver setting has
been disabled.
• Make sure the USB flash drive is
correctly attached to your phone. For
more information, see Connecting an
Optional USB Flash Drive on page
1-9.
• Make sure the Screen Saver setting
is enabled. For more information, see
Setting Up a Screen Saver on page
2-10.