Rosen Aviation 7004 Series : 7 inch WideScreen - Manual (Page 27)

Rosen Aviation 7” Widescreen Display
Document Number: 106211 Revision: B
Date: 04/17/14
Template: 4.4.1.6FM2; Revision A; 12/06/12 Page 27 of 31
9.1. Troubleshooting
If the display does not function properly, refer to the following troubleshooting table for symptoms
and possible solutions before contacting Rosen Technical Support.
Note: Always use a multimeter to verify voltages. Check actual results against the requirements
described in this manual.
Table 4 Troubleshooting tips
Problem Possible Solutions
No video (signal)

Verify that the display is turned on and the video is on.

Verify that a signal is reaching the display using an oscilloscope or
another display.

Check the Power Control Pin. See the Power Mode settings on page 23 .

Verify that the pinout is correct.
Screen is black

Verify that the display is receiving power.

Check the Power Mode settings on page 23 .

Verify that the pinout is correct.

Verify that the video source is on and playing.

Verify all connections between the source and the display.
Image flickers

Try turning on the AGC (Automatic Gain Control) setting on page 23 .

Verify that the signal cable is secure.

Verify that the vertical frame frequency is 60 Hz or less.
Distorted Image 
Verify proper connections, per the latest O&I drawings.

Verify supported resolution.

Check the Power Mode settings on page 23 .

Verify that the pinout is correct.

Verify that a signal is reaching the display using an oscilloscope or
another display.

Examine the display for pinched or damaged cables.
Wrong Colors

Verify proper connections, per the latest technical drawings.

If the screen colors are not what you expect, reset the current scheme.
For more information, see
Reset Scheme on page 18 and Restore
Defaults on page 20 .
9.2. Cleaning the Display
To clean the LCD, very gently wipe the screen with a clean, commercially approved LCD
cleaning cloth and alcohol-free LCD cleaning solution. Use one firm cleaning motion instead of
circular or repeated side-to-side scrubbing.