Product data

WN-5220-V Module Level Service Guide
27
LCD Assembly
The LCD assembly may be accessed without removing the optical engine. Access to the front
and rear of the VideoWall is required for this procedure.
1. Turn the lamp off
Switch off the WN-5220-V using the remote and allow
the cooling cycle to complete (3 – 4 minutes) before
switching off the AC power at the rear-panel switch
2. Remove power cord
Remove the AC power cord from the WN-5220-V
3. Remove the lamp
4. Remove the Screen
5. Remove the Lamp Access
Cover
Unfasten the 8 quarter-turn screws on the lamp access
cover and remove the cover
6. Disconnect the LCD
cable
Lifting the tabs on each edge of the connector, remove
the LCD ribbon cable from it’s connector on the Optical
Engine (note conductor orientation on the cable for
reinstallation – they should be facing the direction of the
lamp).
7. Remove the Optical
Engine top cover
Remove the 5 screws that attach the top cover to the
Optical Engine. Also remove the light block tape.
8. Remove the air filter
9. Loosen the 2 set screws
The two set screws are located behind the LCD fan
shroud. There is a small hole at the top of the LCD fan
bracket (above a larger hole) that allows access to the
upper set screw. There may not be a hole for the lower
set screw on some older displays. If not, then the LCD
fan bracket must be removed (four screws) to gain access
to the lower set-screw.
10. Remove the 2
adjustment screws
The adjustment screws are located behind the larger
holes. See Step 9 of the LCD Centering Process on page
26.
11. The LCD Assembly
should pull straight out
of the top at this point
The LCD assembly should not be disassembled further.
Replacement is the reverse of the above procedure. After the new LCD Module is installed,
it will be necessary to center the LCD. Follow the process for centering the image on page
23.