User manual SHARP EL-1611E

[. . . ] The calculator should be kept in areas free from extreme temperature changes, moisture, and dust. Since this product is not waterproof, do not use it or store it where fluids, for example water, can splash onto it. If service should be required, use only a SHARP servicing dealer, a SHARP approved service facility or SHARP repair service. [. . . ] 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 . Never attempt to turn the printing belt or restrict its movement while printing. Do not rotate the printing mechanism manually, this may damage the printer. O When using the paper that is less than or equals to 25 mm (31/32") in outside diameter: Paper roll : Type EA-7100P Note: Paper tape replacement rolls are available where the EL-1611E calculator is sold. O When using the paper that is 12 mm (15/32") in inside diameter and up to 80 mm (3-5/32") in outside diameter: Never use the supplied paper (25 mm (31/32") in outside diameter) in the holder. When replacing the paper, touching the inside of the printer may damage it. When drawing out the paper tape, pull it straight forward on the paper cutter side. The calculator can also be operated on AC power through use of an AC adaptor. BATTERY OPERATION If the display becomes dim or the printer stops before or during printing, the batteries should be replaced. After the replacement, press OFF and ON in this order to clear the calculator. (If the display is blank, displays any other symbol or the keys become inoperative, remove the batteries and install them again. ) Note: Due to solvent leakage of the battery, keeping a used battery in the battery compartment may result in damage to the calculator. [. . . ] Strong impacts, exposure to electrical fields, or other unusual conditions may render the unit inoperative, and pressing the keys will have no effect. If this occurs, you will have to press the RESET switch on the bottom of the unit. The RESET switch should be pressed only when: · Pressing the RESET switch will clear the stored exchange rate and other data stored in the memory. [. . . ]