User`s guide

WN-5220-S VideoWall User’s Guide
59
for Standard Mullion screens only, by first removing the screen (see
Removing Standard Mullion Screens on page 17), or from the rear by
removing the lamp service access cover. Lamps are most easily
replaced from the rear for Thin Mullions Screens.
WARNING
Before servicing the display, always switch the AC power off at
the
rear
panel power switch and remove the power cord.
When the WN-5220-S VideoWall is connected to the electrical
mains, some circuits still contain line voltage, even when power
is switched off.
CAUTION
Do not
touch
the lamp or reflector. Oils from the skin will cause
these surfaces to become etched when the lamp is operated,
dramatically shortening the life of the lamp.
1. Turn off the power
Switch off the WN-5220-S using the remote and allow the cooling cycle
to complete (3 minutes) before switching off the AC power at the rear-
panel switch.
2. Unplug power cord
Remove the AC power cord from the WN-5220-S.
3. Remove screen or
lamp access cover
For Standard Screen units, to gain access to the lamp from the front
unit, remove the screen.
For either screen type, to gain access to the lamp from the rear unit,
unfasten the 8 quarter-turn screws on the lamp access cover and
remove the cover.
4. Unplug lamp
connector
The lamp connector is next to the reflector fan. Unplug the connector by
pulling up on it.
5. Unhook the lamp
Unhook the two latches holding the lamp module to the optical
assembly.
6. Remove the lamp
Lifting up on the handle, tilt the lamp module away from the latches until
it can be pulled free of the optical assembly.
Carefully remove from the display by lifting the lamp module straight up
to clear the fans, and then withdrawing.
7. Install new lamp
Replacement is the reverse of the above procedure. After installing the
lamp module, ensure that the high-voltage connector is in place and that
the latches are securely latched before replacing the screen or the lamp
service access cover.
8. Reset the Lamp Hours
Reset the lamp hours in the menu.