ervice SW-HF5.1 5100 uide Table of Contents Revision History........................1 Table of Contents........................2 Getting Started.........................3 Conventions Used in this Guide................3 Safety Precautions....................3 Chapter 1. How to Handle Defective Returns..............4 1.1 Overview.......................4 1.2 Problems.......................5 1.2.1 No sound and ower LED (indicator) light......6 No response when power on .
ervice SW-HF5.1 5100 uide Getting Started Conventions Used in this Guide Pay Special Attention: Instructions that are important to remember and may prevent mistakes. Attention Caution: Information that, if not followed, may result in damage to the product. Safety Precautions The following precautions should be observed in handling the speaker described in this guide: Place the speakers on a flat, level and stable surface.
ervice SW-HF5.1 5100 uide 1.2 Problems 1.2.1 No sound and power LED (indicator) unlight No response when power on 1.2.2 1.2.3 LED indicator unlight 1.2.4 One or more channels no sound Page 6/17 Version: 1.0...
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ervice SW-HF5.1 5100 uide Attention Please follow the numbered sequence marked withing parenthesis given in individual flow chart, in that this is the best-recommended sequence to rectify the problems. 1.2.1 No sound and power LED (indicator) unlight Problem No sound and power LED (indicator) unlight Analyze and Defective...
ervice SW-HF5.1 5100 uide 1.2.2 No response when power on Problem No response when power on Analyze and MCU PCB disconnected Defective SW1,U7(2323) Identify the from amp PCB U6(BT2322) Causes Solutions Resolder or reconnect Replace defective parts MCU PCB OR AMP PCB 1.2.3 LED indicator unlight Problem LED indicator unlight...
ervice SW-HF5.1 5100 uide 1.2.4 One or more channels no sound Problem One or more channels no sound Defective Analyze and U1,U2,U14 Defective Broken or short connection of Identify the BT8974 connection of circuit speaker cable Causes BT9843 audio cable or defective TDA7294 speaker s ( )
ervice SW-HF5.1 5100 uide Chapter 8. Important Notes 8.1 Packing requirement for sending the PCB assembly by post PCB assembly is a kind of sophisticated electronic circuit board. Well packing will be required when sending them by post. * Some sophisticated IC components are mounted on the PCB assembly, hence it is necessary to pack each PCB assembly with a separate static protecting bag, in order to avoid static electricity.
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