Clarity WN-5220-S User Manual page 77

Normal Power-Up
Sequence
6. The electronics turn on
the LCD and start
sending data to it
Much of the preliminary diagnostics can be done by observing the 3 LEDs on the
rear connector panel. Table 2 shows the LED combinations for the most likely
failure modes if the WN-5220-S is not operating correctly.
Standby LED
Flashing
Off
On
Note 1
If the STBY LED is flashing and the Lamp LED is off, one of two conditions
exist. Either the display was just shut down normally with the On/Off button or
the unit has shut itself down and the likely cause is that the interlock circuit is
open. The interlock circuit consists of switches on the front screen and rear
lamp access panel. These prevent accidental exposure to the lamp when it is
turned on. Verify that the screen and rear lamp access doors are in place. If
the problem persists, contact your service provider.
Note 2
If the STBY LED is off, the Lamp LED is on, the Fan LED is on and the lamp is
not lit, the electronics module is operating and the likely problem is with the
lamp or it's power system. If replacing the lamp and restarting the WN-5220-S
does not resolve the problem, contact your service provider.
Sequence Note
If there is video present on
the selected source (see
Source Select in menu),
the video image will be
displayed.
If there is no video present,
the message "SOURCE
ABSENT" will be displayed.
Menus can be accessed
and settings saved and
changed.
Lamp LED Fan LED
Off On
On On
Off Off
Table 2
WN-5220-S VideoWall User's Guide
Failure Symptoms At This Part Of
The Sequence
Menu can be selected, but no video is present
• Make sure that the right source is
selected in the menu
• Verify that the Curtain option in the menu
is not on
• Check the video cable connections
• Contact your service provider
No menu or video can be displayed
• Replace the remote batteries and/or
remote
• Contact your service provider
Indication
Normal operation or Interlocks
open. See Note 1
Normal operation or lamp problem.
See Note 2
Display is in the STBY (standby)
mode waiting for an ON command.
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