Litezall Jumbo Calculator User Manual

June 12, 2024
Litezall

Litezall Jumbo Calculator

Safety Precautions

Be sure to read the following safety precautions before using this calculator. Keep this manual handy for later reference.

Batteries

  • After removing the batteries from the calculator, put them in a safe place where there is no danger of them getting into the hands of small children and accidently swallowed.
  • Keep batteries out of the reach of children. If accidentally swallowed, consult with a physician immediately.
  • Never charge batteries, try to take batteries apart, or allow batteries to become shorted. Never expose batteries to direct heat or dispose of them by incineration.
  • Misuse of batteries can cause them to leak acid that can cause damage to nearby items and creates the possibility of fire and personal injury.
  • Always make sure that a battery’s positive (+) and negative (-) sides are facing correctly when you load it into the calculator.
  • Remove the batteries if you do not plan to use the calculator for a long time.
  • Use only the type of batteries specified for this calculator in this manual.
Disposing of the Calculator
  • Never dispose of the calculator by burning it. Doing so can cause certain components to suddenly burst, creating the danger of fire and personal injury.
  • The displays and illustrations (such as key markings) shown in this Owner’s Manual are for illustrative purposes only and may differ somewhat from the actual items they represent.
  • The contents of this manual are subject to change without notice.
Handling Precautions
  • Be sure to press the “ON” key before using the calculator for the first time.
  • Even if the calculator is operating normally, replace the battery at least once every three years. A dead battery can leak, causing damage to and malfunction of the calculator. Never leave the dead battery in the calculator.
  • The battery that comes with this unit discharges slightly during shipment and storage. Because of this, it may require replacement sooner than the initial expected battery life.
  • Low battery power can cause memory contents to become corrupted or lost completely. Always keep written records of all important data.
  • Avoid use and storage in areas subjected to temperature extremes. Very low temperatures can cause slow display response, total failure of the display, and shortening of battery life. Also, avoid leaving the calculator in direct sunlight. near a window, near a heater, or anywhere else it might become exposed to very high temperatures. Heat can cause discoloration or defoITTiatlon of the calculator’s case and damage to Internal circuitry.
  • Avoid use and storage In areas subjected to large amounts of humidity and dust. Take care never to leave the calculator where it might be splashed by water or exposed to large amounts of humidity or dust. Such elements can damage the internal circuitry.
  • Never drop the calculator or otherwise subject it to strong impact.
  • Never twist or bend the calculator. Avoid carrying the calculator In the pocket of your trousers or other tight-fitting clothing where it might be subjected to twisting or bending.
  • Never try to take the calculator apart.
  • Never press the keys of the calculator with a ballpoint pen or other pointed object.
  • Use a soft, dry cloth to clean the exterior of the unit. If the calculator becomes very dirty, wipe it off with a cloth moistened in a weak solution of water and a mild-neutral household detergent. Wring out all excess moisture before wiping the calculator. Never use thinner, benzine, or other volatile agents to clean the calculator. Doing so can remove printed markings and damage the case.

Replacing the Battery

Dim figures on the display of the calculator indicate that battery power is low. Continued use of the calculator when the battery is low can result in improper operation. Replace the battery as soon as possible when display figures become dim.

To replace the battery:

  • Remove the screws that hold the back cover in place and then remove the back cover,
  • Remove the old battery,
  • Wipe off the side of the new battery with a dry, soft cloth. Load it into the unit with the positive(+) side facing up.
  • Replace the battery cover and secure it in place with the screws.

Memory functions

  • [M+] Press to add the displayed number to the memory.
  • [M-] Press to subtract the displayed number from the memory.
  • [MRC] Press once to display the number stored in the memory, press twice to reset the memory to 0.
  • [MR) Memory recall.
  • [MC) Memory Clear.

Performing calculations

Auto Power Off

The calculator power automatically turns off if you do not perform any operation for about six minutes. When this happens, press [ON/Cl([ON/CEI) to turn power back on.

Specifications

  • Operating temperature: 0° ~ 40°C (32° F ~ 104° F)

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