DV-1 - Blank display with backlight

Problem

A powered-on DV-1 unit has blank LCD display screen, but the display's backlight is visible.

Solution

Summary

Check for responses from the buttons. Perform a front-panel reset.

Details

1. Try to press a button on the screen and verify that the screen saver is not active
   • Screen Saver is a new feature of the 6.0 software
   • You can access the options by selecting: Display -> Screen Saver
2. Turn off the unit and unplug the cabin mic
   
   • (The cabin microphone is NOT hot swappable, meaning the unit needs to be turned OFF before unplugging or plugging in the cabin microphone)
   • Ensure the unit is turned off when unplugging the cabin mic
3. Boot the system without the cabin microphone
4. Some other symptoms seen when cabin microphone is not seated properly:
   
   • Flickering screen
   • Blue screen
   • Gray screen

Advanced Troubleshooting Option - Front Panel Reset

1. Remove the six (6) screws securing the panel: 1/16-in. hex-head
2. Open the drive door
3. Remove 3 cables holding the front panel to the DV-1
   
   • Ribbon cable (about 1.5 inches)
   • Speaker wire (woofer)
   • Speaker wire (tweeter)
4. Remove a small white ribbon cable (1/2 inch) connected internally on the front panel
5. Reseat the small white ribbon cable (This performs the reset)
6. Leave the larger ribbon cable and speaker wires unplugged for 10 minutes
7. Plug the cables back in and make sure both ends of each are securely attached
8. Replace the six (6) screws that secure the front panel

source: WKB-000036