User manual SHARP EL-2901PIII

[. . . ] Pressing of 2) When the grand total/rate setting mode selector is in the ON position (GT), the counter will count the number of times that the calculation results have been stored in the grand total memory. 3) The memory item counter will count the number of times that the key has been pressed in the addition. note: · Each time the key is used in the subtraction, 1 will be subtracted from the count. Note: The decimal point floats during successive calculation by the use of or . [. . . ] CLEAR / CLEAR ENTRY KEY: Press this key twice, followed by TOTAL KEY EQUAL KEY CHANGE SIGN KEY: Changes the algebraic sign of a number (i. GRAND TOTAL KEY COST PRICE ENTRY KEY: Press this key to enter the cost price. dISPLAY SYMBOLS: M ­ · E : : : : Appears when a number is in the memory. Cleaning the printing mechanism If the print becomes dull after long time usage, clean the printing wheel according to the following procedures: 1) Remove the printer cover and the ink roller. 2) Install the paper roll and feed it until it comes out of the front of the printing mechanism. 3) Put a small brush (like a tooth brush) lightly to the printing wheel and clean it by pressing . Do not rotate the printing mechanism manually, this may damage the printer. 2) 3) Lift the attached metal paper holder up and insert the paper roll to the paper holder. There are several situations which will cause an overflow or an error condition. If an "0 E" is displayed at the time of the error, "­ ­ ­ ­ ­ ­ ­" will be printed in red and must be used to clear the calculator. also , in rare cases , printing may stop midway and the indication "E" appear on the display. This is not a malfunction but is caused when the calculator is exposed to strong electromagnetic noise or static electricity from an external source. Should this occur, press the key and then repeat the calculation from the beginning. When the integer portion of the contents of the memory or grand total memory exceeds 12 digits. If printing is blurry even when the ink roller is in the proper position, replace the roller. 1) 3) Hold the top of the ink roller and remove the roller by pulling it toward you and then upward. Time for battery replacement Life of the memory protection battery is approximately 2, 500 hours at 25°C(77°F) with the power plug not connected to the socket. * When the memory protection battery is weak, the date/time setting is initialized (1/1/2006, 12:00:00 a. [. . . ] EXAMPLE 1: Determine the cost price for 30% margin when the selling price is set at $500. Selling Price Margin Cost price Berechnen Sie den Einkaufspreis für eine Gewinnspanne von 30%, wenn der Verkaufspreis auf $500 festgelegt ist. Perform two calculations using $840 and $525, both of which already include tax. EXAMPLE 2: Determine the selling price for 30% margin when the cost price is set at $350. [. . . ]