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Internal Use Only Website http://biz.lgservice.com SERVICE MANUAL 300 W 2.1ch SOUND BAR MODEL: NB300 (NB300, S33A1-D) SERVICE MANUAL MODEL: NB300 (NB300, S33A1-D) CAUTION BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL. P/NO : AFN76793361 SEPTEMBER, 2014 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 WIRELESS SUBWOOFER CONNECTION ... 1-4 MICOM HIDDEN KEY MODE ... 1-5 UPDATE PROGRAM ... 1-6 SERVICE INFORMATION FOR EEPROM ... 1-6 SPECIFICATIONS ... 1-7 1-2 ESD PRECAUTIONS Electrostatically Sensitive Devices (ESD) Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor