Product data

WN-5220-V Module Level Service Guide

Test Patterns

Brings up the following sub-menu that generates the full-screen patterns:

Test Patterns

[X] Off

[ ] White

[ ] Black

[ ] 50% Gray

[ ] Red

[ ] Green

[ ] Blue

[ ] Geometry

Most of these are self explanatory.

Off – allows the source data/video to be displayed

Geometry- displays a black background with a white grid pattern. The outside edge of

the image is a white line that is one line wide. Six pixels (lines) in from the edge is

another rectangle that is one line wide. This pattern is useful for mechanically centering

the LCD and verifying geometry issues.

Gamma Disable

Changes the gamma curve that the WN-5220-V electronics use to linearize what the LCD

displays. Basically, it changes the way the color information is displayed.

OEM Select (firmware version 3e and higher)

This feature selects the OEM name that is displayed in the About menu. The default setting of 000

sets the brand name to Clarity.

Newer Electronics

(two Monitor ID knobs)

Service Menu

[ ] Lockout Disable

[ ] Test Patterns

[ ] Gamma Disable

< > OEM Select: 000

Lockout Disable

Reduces the standby-delay time from 3 minutes to 3 seconds. This can be useful when

diagnosing start-up problems. This feature should be used with caution! If the lamp has been on

and the display is turned off, it needs several minutes to cool down before attempting to re-

ignite the lamp.