User manual SHARP EL-1801C

[. . . ] Use of override the add mode and decimally correct answers will be printed. The calculator should be kept in areas free from extreme temperature changes, moisture, and dust. A soft, dry cloth should be used to clean the calculator. [. . . ] If printing is blurry even when the ink roller is in the proper position, replace the roller. Changes the algebraic sign of a number (i. 2) 4) Install the correct color new ink roller and press it in the correct position. 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 . Do not rotate the printing mechanism manually, this may damage the printer. Never attempt to turn the printing belt or restrict its movement while printing. To Install or Replace Batteries -- When the batteries become weak, the display will work but not the printer. This indicates that you should replace the batteries. Always put back the 4 batteries at the same time. Battery: Heavy-duty manganese battery, size AA (or R6) × 4 Note: When the batteries are replaced, the calculator may fail to function correctly. If this occurs, remove the batteries, wait at least two minutes, then reinstall them. Also, if the calculator is subjected to a strong impact or noise during a calculation, it may not print correctly or the calculation may be lost. If this happens, the calculation must be performed again. Always cut leading edge with scissors first. [. . . ] The rounding selector should be in the "5/4" position unless otherwise specified. The print / item count mode selector should be in the "P· If an error is made while entering a number, press C CE and enter the correct number. Example procedures are listed in following manner unless otherwise specified. [. . . ]