User manual LEXIBOOK PLC251

[. . . ] Calculations using memory Before saving a new value to the memory, the content must first be deleted by pressing the 'MRC' key twice and then pressing the 'C/CE' key to delete all previous calculations. To add a value to the memory, enter the chosen number or calculation and then press the 'M+' key. To deduct a value from the memory, enter the chosen number or calculation, and then press the "M-" key. [. . . ] COST/SELL/MARGIN ­ these keys are used to perform a profit analysis. LOCAL/EURO ­ these keys are used to perform currency conversions. Before using your calculator for the first time, please follow the steps given below: 1. If the tab remains jammed, use a coin to remove the battery compartment, the battery and then the tab. In order to delete the error message and any other calculations, press "C/CE". To make use of the warranty or after-sales service, please contact your retailer and supply proof of purchase. Our warranty covers material or installation-related defects attributable to the manufacturer, with the exception of wear caused by failure to respect the instructions for use or any unauthorised work on the equipment (such as dismantling, exposure to heat or damp etc). Note: It is recommended that all packaging be kept for future reference. Keep this instruction manual in a safe place as it contains important information. In our constant concern for improvement, the colours and details of the product may differ slightly from those shown on the packaging. To replace the battery, open the battery compartment at the back of the unit using a coin. Insert a new battery (+ side facing up) and close back the battery compartment. Automatic switch off: If no key is pressed, the calculator will switch itself off automatically after approximately 6 minutes. Abnormal Conditions If this calculator is exposed to a powerful external electric field or shock during use, an abnormal condition may occur in which all the keys, including C/CE, do not function. Note that the memory contents will be completely cleared when this operation is performed. Press the RESET switch only in the following cases: After replacing the batteries. [. . . ] ⷠNever dispose of batteries, the liquid crystal panel, or other component in a fire. ⷠShould the calculator be exposed to a high electrostatic discharge, the content of the memory could suffer damage or the keys could stop working. ⷠBefore assuming malfunction of the equipment, make sure you have read this instruction manual and check that the problem is not caused by the batteries running out or by calculation errors. [. . . ]