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Appendix B: Maintenance and Service 241
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Replacing the Batteries
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The Continuous Memory of your HP-41C will normally be preserved for about
30 to 60 seconds while the batteries are out of the calculator. However,
you must turn the calculator off before removing the batteries in
order to preserve Continuous Memory. This gives you ample time to replace
the batteries with new ones. Leaving batteries out of the calculator for
extended periods will result in loss of the information in Continuous Memory.
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To replace the batteries, use the following procedure (you may want to
read through the entire battery replacement procedure prior to
replacing the batteries):
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1.
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Turn the calculator off.
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2.
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Turn the calculator over in your hand and push up on the lip on the
battery holder as shown in the photograph.
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3.
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Remove the batteries from the battery holder, making sure you do not mix
them up with the new batteries.
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4.
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Look at the polarity marks on the end of the battery holder. It shows how the
batteries should be inserted into the battery holder. Insert the new batteries,
and carefully note the position of each battery. If any of the batteries
are inserted wrong, the calculator will not turn on.
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