I set the contrast on my Quintox handset too light and now I cannot see the screen, how do I reset the contrast to be able to read it without seeing it?
If the display is too light to read, first attempt to reset by pressing the “down” key on and off. This should bring the screen back dark enough to read. You must press the key repeatedly since holding the key down will only step the contrast one step at a time no matter how long you hold it down. Try to unplug the handset cable briefly, then reattach. If you still cannot get the screen to display, call the tech department and they will step you through the process.
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