Controling the Brightness or Contrast of the display of a NEC DSX 22B or 34B display phone

Purchase a NEC DSX22B Display Tel

This is actually a common problem.  Customers will tell us the display of their DSX telephone is no longer working, but we soon discover that it is just the contrast has been turned all the way down by accident.

Leave your NEC DSX telephone on hook and press your volume up key, you will notice your LCD display will change. Press the volume down key to make it darker or the volume up to make it lighter.

Press the volume up or down to adjust the contrast

Press the volume up or down to adjust the contrast

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