Monitor Check
Overview of the navigation display.
These screens allow you to troubleshoot the navigation display. Select the item you want to troubleshoot, and follow the diagnostic instructions.
Scheme 25
- RGB Color
- Gray Tone
- White Raster
- Black Raster
- Color Pattern
- Monitor Adjustment
- Touch Panel Check
- Touch Panel Calibration
RGB Color
This screen verifies that the navigation display is receiving the video (R, G, B, and Composite sync) signals 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 troubleshoot for the color signal and composite sync problem.
Scheme 26
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 AUDIO-NAVIGATION UNIT .
Scheme 27
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 AUDIO-NAVIGATION UNIT .
Scheme 28
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 AUDIO-NAVIGATION UNIT .
Scheme 29
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.
Scheme 30
Monitor Adjustment
This screen allows you to adjust the navigation display. Select the item you want to adjust.
Scheme 31
- Navi: This allows you to center the navigation display.
- Rear Camera: This allows you to adjust the rearview camera guide lines. Not activated in this model (grayed out).
Navi
If you selected the Navi, use the joystick to move the picture up/down or left/right. then select the Set to save the selection. Do not adjust the monitor position unless directed by a service bulletin. The Default resets the display position to factory specifications.
Scheme 32
Touch Panel Check
The panel touch sensing system consists of a touch sensitive resistive membrane covering the display. The screen has to be physically touched to make it work. The display has the capability of 479 touch locations (left to right), and 233 touch locations (top to bottom). The upper left hand corner is position (0, 0) and the lower right hand corner is (479, 233) as displayed. Touching anywhere on the screen displays the coordinate of the location, and cause the place you touch to display a + icon. If any area of the screen either does not respond, or responds at some other location when touched, then REPLACE THE AUDIO-NAVIGATION UNIT .
Note. Unlike earlier screens that used infrared sensors, direct sunlight does not affect this test. A box appears after you touch the screen.
Scheme 33
Touch Panel Calibration
The display screen uses a touch sensitive membrane. This means that every location of the entire surface of the display is touch sensitive. This diagnosis allows alignment of these touch locations with the location of the buttons images on the screen.
This should never need adjustment, and is used only by the factory to adjust the touch locations for parallax (the touch locations appear different when viewed at an angle). If you are directed to make an adjustment by the factory or other service information, follow this procedure
Scheme 34
- The screen consists of the + icons. Touch the center of the five + icons on order 1-5. NOTE: Touch the center of the + icon correctly.
- To store any changes you make, touch the Set button.
- Select Return to exit the diagnosis.