2CONTENTSOPERATIONAL NOTESENGLISHPage• INSTALLING OF BATTERY FOR MEMORYPROTECTION ................................................... 3• OPERATING CONTROLS ................................ 4• INK RIBBON REPLACEMENT ......................... 8• PAPER ROLL REPLACEMENT ........................ 9• ERRORS ......................................................... 10• REPLACEMENT OF BATTERY FORMEMORY PROTECTION ................................ 10• SPECIFICATIONS ........................................... 12• RESETTING THE UNIT .................................. 13• CALCULATION EXAMPLES ......................... 115• TAX RATE CALCULATIONS ......................... 134• DISCOUNT RATE CALCULATION ............... 138To insure trouble-free operation of your SHARPcalculator, we recommend the following:1. The calculator should be kept in areas free fromextreme temperature changes, moisture, anddust.2. A soft, dry cloth should be used to clean thecalculator. Do not use solvents or a wet cloth.3. Since this product is not waterproof, do not useit or store it where fluids, for example water, cansplash onto it. Raindrops, water spray, juice,coffee, steam, perspiration, etc. will also causemalfunction.4. While the memory protection battery is notinstalled, the tax/discount rate set up will becleared upon terminating the AC power supply.The tax/discount rate set up will also be clearedwhen the memory protection battery is removedfrom the unit.5. If service should be required on this equipment,use only a SHARP servicing dealer, a SHARPapproved service facility or SHARP repair servicewhere available.6. Do not wind the AC cord around the body orotherwise forcibly bend or twist it.SHARP will not be liable nor responsible for anyincidental or consequential economic orproperty damage caused by misuse and/ormalfunctions of this product and its peripherals,unless such liability is acknowledged by law.