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The NiMH batteries are not charging.
Make sure the batteries are inserted correctly. See page 3.
(Do not replace batteries while the power adapter is connected.)
Make sure the small end of the power adapter is firmly plugged into
RUBY’s power port.
Ensure that the outlet has power and is not malfunctioning. If the outlet
is connected to a wall switch, make sure the switch is on.
There are smudges or blemishes on the screen.
Clean the LCD screen as described in Cleaning Procedures on page
26.
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