User manual SHARP PC-AR50

[. . . ] Use of the add mode permits addition , and and subtraction of numbers without entry of the decimal point. Use of will automatically override the add mode and decimally correct answers will be printed. cLOCK / CALENDAR KEY: · Each time this key is pressed, the mode switches. WARNING ­ FCC Regulations state that any unauthorized changes or modifications to this equipment not expressly approved by the manufacturer could void the user's authority to operate this equipment. [. . . ] 1) 3) Hold the top of the ink roller and remove the roller by pulling it toward you and then upward. 2) 4) Install the new ink roller in the correct position. (see "GRAND TOTAL / RATESETTING MODE SELECTOR") * When the adjustment is complete, the clock starts at 3:38:00 p. The count is printed when the calculated result is obtained. 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 key. To print and clear the count, press the key has 3) The memory item counter will count the number of times that the been pressed in the addition. Key is used in the subtraction, 1 will be subtracted from Note: · The count is printed when the memory is recalled. If the count exceeds the maximum, the counter will recount from zero. 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 . If the date/time setting is modified or incorrect, promptly replace the memory protection battery with new one. (The life of the pre-installed battery may be shorter than expected because of the time the calculator spends during shipment. 1) Turn the power switch "OFF" and unplug the power supply plug from the outlet. 2) Remove the battery cover on the back of the unit. Wipe the battery well with a dry cloth and place the plus "+" side upward. 5) Press the RESET switch on the back of the unit (See "RESETTING THE UNIT"). Connect the power supply plug to an outlet and turn the power switch "ON". On the battery replacement date label found on the back of the unit, write down the month and year when the battery is replaced, as a reference for the next battery replacement. Do not expose the battery to water or flame, and do not take it apart. Store batteries out of the reach of small children. Dispose of used batteries according to the manufacturer's instructions. [. . . ] The RESET switch should be pressed only when: · Do not use anything breakable or anything with a sharp tip, such as a needle. After pressing the RESET switch, connect the power supply plug to an outlet. Turn the power switch "ON" and check that "0. EXAMPLE 2: Perform two calculations using $840 and $525, both of which already include tax. [. . . ]