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CONTENTS PRECAUTIONS 4 PREFACE 6 OVERALL VIEW OF ER SERIES 6 DISPLAY & KEYBOARD 7 OPERATIONS 11 1. Programming mode Chapter 1. Basic Operation Chapter 2. PLU Saving & Calling - up Chapter 3. User's Set-up Mode Chapter 4. Formatting Printing Receipt 11 12 13 16 20 2. Sales Mode Chapter 5. Basic Operation Chapter 6. Sales Transaction Chapter 7. Discount & Payment Chapter 8. Daily Total Sales Amount 24 25 27 35 37 ASCII CODE 39 ERROR MESSAGES 40 SPECIFICATION 41