Troubleshooting: How to show ALL LIGHTS on Big Ben, AD-16x ,DA-16x

Use this boot-up procedure to check if any lights on the front panel are not working

To begin, the unit must be completely powered off.

Hold down the four directional buttons "Prev" "Next" "Up" and "Down/SetUp"

Power the unit on while still holding down those four buttons

The unit immediately loads a mode where all the lights on the front panel and display are illuminated. Inspect all portions of the panel and display to look for any lights that are not working.