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Internal Use Only Website http://biz.lgservice.com SERVICE MANUAL Sound Bar System MODEL: NB5530A (NB5530A, S73A1-D) SERVICE MANUAL MODEL: NB5530A (NB5530A, S73A1-D) CAUTION BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL. P/NO : AFN76035867 JUNE, 2013 CONTENTS SECTION 1 ... GENERAL SECTION 2 ... CABINET & MAIN CHASSIS SECTION 3 ... ELECTRICAL SECTION 4 ... WIRELESS SUBWOOFER PART SECTION 5 ... REPLACEMENT PARTS LIST 1-1 SECTION 1 GENERAL CONTENTS ESD PRECAUTIONS ... 1-3 MICOM HIDDEN KEY MODE ... 1-4 UPDATE PROGRAM ... 1-5 1. How to connect a jig board to download new program ... 1-5 2. File name ... 1-5 3. Creating a firmware update device ... 1-5 4. Updating a program ... 1-6 SERVICE INFORMATION FOR EEPROM ... 1-6 SPECIFICATIONS ... 1-7 1-2 ESD PRECAUTIONS Electrostatically Sensitive Dev