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ManualsBrandsClarity ManualsComputer equipmentWN-5220-V

WN-5220-V Module Level Service Guide

∇

CAUTION

Make sure that the LCD fans get reconnected and are operating. Failure to do so can

lead to overheating of the LCD, resulting in a ruined LCD.

When the new Optical Engine is installed it will be necessary to center the LCD

image on the screen and adjust the size of the image.

Optical Adjustment Process

The LCD is initially centered and the image sized at the factory. Anytime its

alignment adjusters are disturbed, for example during an LCD replacement, the

LCD must be realigned using this procedure.

Centering the LCD

After replacing the Optical Engine or the LCD, it may be necessary to re-adjust the

LCD’s position. The image may not fully cover the screen even after making

position adjustments with the remote control or the image may not be square on the

screen.

Centering the LCD to the screen is a fairly simple procedure that gets easier each

time you do it.

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WARNING

The WN-5220-V contains electrical interlocks that prevent operation when the front

screen is removed. Do not bypass these interlocks, except for servicing. Operating the

WN-5220-V with access panels or the front screen removed can expose service or

operating personnel to intense light, high electrical voltages and hot surfaces. Always

wear ultraviolet-blocking eyeware with side guards when servicing the WN-5220-V.

1. Attach the AC power

cable

2. Remove the Lamp Access

Cover

Unfasten the 8 quarter-turn screws on the lamp access cover

and remove the cover

3. Re-install the screen (if it

is off)

4. Close the rear safety

interlock switch

Using a small wedge (made from a wire/cable tie,

business card, etc.), close the switch so that the

VideoWall will operate without the Lamp Access Cover

on. Be careful not to damage the switch by over-prying.

5. Turn the display on

Turn the power switch to the on position, wait for the

three minute standby-delay cycle and press the On

button

6. Display the built-in

Geometry pattern

To access the Service Menu (firmware version 3.0 or

higher) go to the About sub-menu and press the remote’s

arrow ke

s in the followin

uence: u

left