Monitor Check (center display)

Overview of the center display unit.

The center display unit communicates with the audio unit over its own GA-Net bus. Display information sent by the audio unit to the center display unit via the video data bus (GVIF).

These screens allow you to troubleshoot the center display unit. Select the item you want to troubleshoot, and follow the diagnostic instructions.

• RGB Color
• Gray Tone
• Black Raster
• White Raster
• Color Pattern

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RGB 

This screen verifies that the center display unit is displaying the RGB (Red, Green, and Blue) components properly. The three primary colors should all appear without distortion. The combination of all three should produce a central white section. If the picture has lines in it, or scrolls horizontally or vertically, and any of the colors are missing, or scrolls horizontally, replace the center display unit .

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Gray Tone 

This screen checks problems with contrast. You should be able to see the changes from bar to bar across the scale. It is normal for the two bars on either side to appear the same. If you cannot see changes from bar to bar, replace the center display unit .

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Black Raster 

This screen checks for pixels that may be stuck on. The entire display must be black. If pixels are stuck on, replace the center display unit .

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White Raster 

This screen checks for pixels that may be dead (off). The entire display must be white. If there are dead pixels, replace the center display unit .

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Color Pattern 

The screen shows the colors being used for the map and menu screens. This is for factory use only. To check the color signal, use the RGB Color diagnosis.

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