Sentry Industries CA756 - Manual (Page 5)

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The keys of this unit perform a number of different
functions. The key illustrated below, for example, is used to
perform 4 different functions:x
-1 , x!, A, /A.
Note the following, concerning the key illustrated above.
The keys of this calculator can perform a number of
different functions. The keyboard is color-coded to help you
quickly determine the key sequence you have to perform
for each function.
Display indicators
The following indicators appear on the display to show you
the current status of the calculator at a glance.
: key pressed.
9.Program clear
10.Input buffer clear
11.Replay memory clear
* Never press the RESET button while internal
operations are being performed. Doing so can cause
irreparable damage to the memory of your calculator.
Handling precautions
• Avoid dropping your calculator and subjecting it to other
strong impacts.
• Do not store the calculator or leave it in areas exposed to
high temperatures, or humidity, or large amounts of dust.
when exposed to low temperatures, the calculator may
require more time to display results and may even fail to
operate. Correct operation will resume once the
calculator is brought back to normal temperature.
• The display will go blank and keys will not operate during
calculations. When you are operating the keyboard, be
sure to watch the display to make sure that all your key
operations are being performed correctly.
• Avoid using volatile liquids such as thinner or benzine to
clean the unit. Wipe it with a soft, dry cloth, or with a cloth
that has been dipped in a solution of water and a neutral
detergent and wrung out.
• Be sure that the power is off when replacing batteries.
• If the calculator is exposed to a strong electrostatic
charge, its memory contents may be damaged or the
keys may stop working. In such a case, perform the
Reset operation to clear the memory and restore normal
key operation.
• Note that strong vibration or impact during program
execution can cause execution to stop or can damage
the calculator's memory contents.
• Before assuming malfunction of the unit, be sure to
carefully reread this manual and ensure that the problem
is not due to insufficient battery power, programming or
operational errors.
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