Instruction manual
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The display contrast on the MLS-18D system phone can be adjusted by
pressing [
✳
] and then using the “up” volume control button to increase the
brightness or the “down” volume control button to decrease the brightness.
Adjust the contrast while the phone is idle and the handset is in the cradle.
(Volume level bars appear in the display on the MLS-18D when the volume
or display contrast is adjusted.)
Display
5-51