Service Guide SW-G2.1 1200 Content Document Version ..........................2 Contents............................3 Use..............................4 Use Guide ..........................4 Safety Caution ........................... 4 Chapter 1: How to Dispose Returned Defective Products ............... 5 1.2 Troubles ..........................6 1.2.1 No Power and Indicator Lamp Inoperative ............... 7 1.2.2 No Sound........................
Service Guide SW-G2.1 1200 Use Guide Special Attention: this guide contributes to remember and prevent errors. Warning: if information does not allow, it is possible to cause the product damaged. Safety Caution: This guide requires the cautions given below should be followed during operation of the speaker: Flatly place the product and don’t place the speaker in such hostile environments as smoke, vibration, air containing salt or oil, or other corrosive air or smoke;...
Service Guide SW-G2.1 1200 Chapter 1: How to Dispose Returned Defective Products 1.1 General Receive the speaker returned by a consumer Verify the trouble and necessary test Find out troubles in a function test Analyze possible causes for the troubles Decide an effective repair service scheme Test Ok Test NG...
Service Guide SW-G2.1 1200 1.2 Troubles Description of troubles 1.2.1 No Power and LED Indicator Lamp Inoperative 1.2.2 No Sound 1.2.3 No Sound from Left or Right Channel 1.2.4 No Bass 1.2.5 Noise and Current Noise 1.2.6 LED Indicator Lamp Inoperative 1.2.7 No Sound Output from Earphone after Installation of Earphone Version No.
Service Guide SW-G2.1 1200 * Note: Please follow the sequence of single flow chart. The flow chart is the optimal sequence recommended for removal of the troubles 1.2.1 No Power and LED Indicator Lamp Inoperative No Power and LED Indicator Lamp Inoperative 1.
Service Guide SW-G2.1 1200 1.2.2 No Sound No Sound 1. Short circuit, open circuit 1. RCA: JK2/ JK3 defective or 1. IC: U1, U2, U4, U5 and U6 and no power of PCB damaged defective or damaged 2. Connecting line damaged 2.
Service Guide SW-G2.1 1200 1.2.3 No Sound from Left/ Right Channel No Sound from Left / Right Channel 1. Short circuit and damage 1. Horns on two side of left and 1. Unit circuit element U1, U2, of PCB right channels defective or R1 and U6 of left/ right 2.
Service Guide SW-G2.1 1200 1.2.4 No Bass No Bass 1. PCB copper sheet of 1. Horns defective or damaged 1. U4 and U5 defective or power amplifier broken damaged 2. Plug and socket of horn 2. Voltage-stabilizing circuit of line loose power supply damaged, short 3.
Service Guide SW-G2.1 1200 1.2.5 Noise and Current Noise Noise and Current Noise 1. Switching power supply 1. Poor contact of earthing line 1. Integrated circuit U1, U2, U3 panel damaged. CON3-CON6 U4, U5 and U6 damaged or 2. Filter capacitor of power CON5-CON4 signal lines copper sheet broken supply C14 and C15...
Service Guide SW-G2.1 1200 1.2.6 LED Indicator Lamp Inoperative LED Indicator Lamp Inoperative 1. LED1 damaged or inoperative 2. Copper foil of lamp base of PCB broken 3. U3 and R36 damaged Replace/ repair Version No. 1.0 Page 12 of 21...
Service Guide SW-G2.1 1200 1.2.7 No Sound Output from Earphone after Installation of Earphone e No Sound Output from Earphone after Installation of Earphone 1. Copper foil broken by JK 5 earphone socket to result in poor contact during use 2.
Service Guide SW-G2.1 1200 Chapter 3 Block Diagram Signal input Earphone input Calculation amplification Master volume tuning Earphone amplification JRC4558 JRC4558 Power supply Bass tuning Power amplification Power amplification Power amplification TDA2030A TDA2030 TDA2030 Left channel output Bass output Right channel output Version No.
Service Guide SW-G2.1 1200 Chapter 5 Part List Subwoofer Ref. NO Description Part NO. KNOB AMP024902. 00G FRONT PANEL AMP024901. 00G SPEAKER AMK440020. G03 WRAP BOARD AHB024901. 00G POWER PCBA AEM100023. 00G METAL BAR AMB000006. 00G 2RCA SOCKET ANJ000093. 00G 2RCA SOCKET ANJ000003.
Service Guide SW-G2.1 1200 Satellite Ref. NO Description Part NO. FRONT CABINET AMP024701. 00G SPEAKER AMK509002. G01 SEALING COVER AMP724903. 00G BACK CABINET AMP724704. 00G Version No. 1.0 Page 19 of 21...
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