Husky MP2500 Manual page 72

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A similar message is displayed by the application saying that power is
low.
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The MP2500 will not power up.
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You know that the batteries are nearly exhausted and will be relying on
the batteries for an extended period.
To avoid problems, issue users with a spare set of batteries.
Note: If the main batteries are removed or completely discharged, the
contents of the RAM and clock will still be preserved by another
independent internal battery, for 2 to 3 days at 20°C (68°F). This
battery does not allow operation. If the MP2500 may be without
power for more than a few days, copy any files that you want to
keep to disk first, for added security.
8.2.3.2 How to change non-rechargeable batteries
CAUTION: Do not mix batteries. Replace all 3 at the same time,
with batteries of the same type.
To change the batteries:
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Turn off.
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Use a COIN to unscrew the battery cap. (A screwdriver may damage
the slot and the MP2500 appearance).
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Remove the old batteries and dispose of them safely.
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Feed in the cells carefully, positive inwards. If you are fitting AA-size
batteries, insert them in the battery packing tube (supplied with MP2500
alkaline option at time of order only).
•
Take the battery cap and, with finger pressure only, press it into the
battery compartment and turn it clockwise.
•
Only when the thread is started, use a coin to screw the cap tightly
home.
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Turn on and you should be able to carry on from where you left off
using the MP2500.
50 H MP2500 System Developer's Guide
USKY