Product data

WN-5220-V Module Level Service Guide

Field Replaceable Unit Procedures

Electronics Module

The Electronics Module houses the controller board, which provides connections for all

signals entering and leaving the WN-5220-V. It also contains the microprocessor and all

control circuitry that drives the LCD. This procedure requires access to the back of the

VideoWall.

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CAUTION

Always switch off the WN-5220-V before connecting or disconnecting cables. Failure

to do so (“hot plugging” the cables) can destroy the controller board.

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 input cables

Remove any signal cables from the rear panel of the WN-

5220-V.

4. Remove the screen

Only if servicing from the front.

5. Disconnect the LCD

cable

On the electronics module, disconnect the LCD ribbon

cable, using a small flat-blade screwdriver. Carefully lift

a tab on each end of the connector and removing the

cable (note that the cable’s conductors face the front of

the WN-5220-V for reinstallation).

6. Disconnect the

Interlock/Fan connector

Disconnect the 4 pin Interlock/Fan connector part of the

DC Power Wiring Harness.

7. Disconnect the DC power

connector

8. Undo the 2 thumb screws

The 2 screws are captive and do not separate from the

module. One screw is near the

ower su

and the