User manual SHARP EL-1750P

[. . . ] ­ Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. 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. Since this product is not waterproof, do not use it or store it where fluids, for example water, can splash onto it. [. . . ] Always put back the 4 batteries at the same time. If you pull out the power cord to cut electricity completely or replace the batteries, the presently stored tax rate will be cleared. TAX-INCLUDING KEY PRE-TAX KEY DISPLAY SYMBOLS: M ­ E : Appears when a number is in the memory. : Appears when an overflow or other error is detected. There are several situations which will cause an overflow or an error condition. when this occurs , "E" will be displayed. The contents of the memory at the time of the error are retained. If an "0 E" is displayed at the time of the error, "­ ­ must be ­ ­ ­ ­ ­" will be printed in red and used to clear the calculator. When the integer portion of an answer exceeds 12 digits. When the integer portion of the contents of the memory exceeds 12 digits. (DC): Heavy-duty manganese battery, size AA (or R6) × 4 (Option) Calculations: Four arithmetic, constant multiplication and division, power, add-on, tax, repeat addition and subtraction, reciprocal, item count calculation, markup, memory, etc. 4, 000 hours (in non-print mode, displaying 555'555 at 25°C (77°F) ambient temperature) Operating time depends on the type of battery and type of use. Markup and Profit Margin are both ways of calculating percent profit. Calculate the dollar difference (a) and the percent change (b) between two yearly sales figures $1, 500 in one year and $1, 300 in the previous. 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 back of the unit. The RESET switch should be pressed only when: · Pressing the RESET switch will clear the stored tax rate and other data stored in the memory. Do not use anything breakable or anything with a sharp tip, such as a needle. After pressing the RESET switch, turn the power switch "ON" and check that "0. The rounding selector should be in the "5/4" position unless otherwise specified. [. . . ] This warranty shall not apply to: (a) Any defects caused or repairs required as a result of abusive operation, negligence, accident, improper installation or inappropriate use as outlined in the owner's manual. (b) Any Sharp product tampered with, modified, adjusted or repaired by any party other than Sharp, Sharp's Authorized Service Centres or Sharp's Authorized Servicing Dealers. (c) Damage caused or repairs required as a result of the use with items not specified or approved by Sharp, including but not limited to software, paper and batteries. (d) Any replacement of accessories, glassware, consumable or peripheral items required through normal use of the product including but not limited to batteries, AC adapters, ribbons, correction tapes, ink rollers, cables, printwheel, or paper. [. . . ]