Service Guide SW-5.1 1020 Contents 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-5.1 1020 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,...
Service Guide SW-5.1 1020 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...
Service Guide SW-5.1 1020 1.2 Troubles Description of troubles 1.2.1 No Power and Indicator Lamp Inoperative 1.2.2 No Sound 1.2.3 No Sound from Front Left or Right Channel 1.2.4 No Sound from Rear Left or Right Channel 1.2.5 No Sound from Middle Channel 1.2.6 No Bass...
Service Guide SW-5.1 1020 * 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 Lamp Inoperative No Power/LED lamp inoperative 1. Switching power panel...
Causes given below damaged or defective 2. VR2 Potentiometer defective Power fault of U6 resulting from 2. Abnormal power voltage or damaged SW-5.1 1020 PCB D6, R59, C81. of power panel Inspect/ repair/ replace Replace/ repair Inspect/ repair/ replace Version No. 1.0...
Service Guide SW-5.1 1020 1.2.3 No Sound from Front Left or Right Channel No sound from front left or right channel 1. Short circuit or open 1. Output RCA socket defective Such elements damaged as C28, circuit of PCB for front...
Service Guide SW-5.1 1020 1.2.4 No Sound from Rear Left or Right Channel No sound from rear left or right channel 1. Short circuit or open 1. Output RCA socket defective Such elements damaged as C30, circuit of PCB for rear...
Service Guide SW-5.1 1020 1.2.5 No Sound from Middle Channel No sound from middle channel 1. Short circuit or open 1. Output RCA socket defective Such elements damaged as C32 circuit of PCB for middle or damaged and U3 channel 2.
Service Guide SW-5.1 1020 1.2.6 No Bass No bass 1. Short circuit or open 1. Output socket CON1 Such elements damaged as D5, circuit of PCB for bass defective or damaged D7, U4 and U5 channel 2. Power failure of U4 and U5 2.
Service Guide SW-5.1 1020 1.2.7 Noise and Current Noise Noise and current noise 1. Switching power supply 1. Bass potentiometer defective Such elements damaged as D6, panel damaged. or damaged R59, D5, D7, U1, U2, U3, U4, U5 2. Incomplete power filter: 2.
Service Guide SW-5.1 1020 1.2.8 Earphone Socket Inoperative Earphone socket inoperative 1. Earphone socket damaged or inoperative 2. Short circuit or open circuit of copper foil for circuit board Replace/ repair Version No. 1.0 Page 14 of 24...
Service Guide SW-5.1 1020 1.2.9 Noise from Bass Potentiometer Noise from bass potentiometer Bass potentiometer defective or damaged 2. PCB C49 and C52 defective or damaged Replace/ repair Version No. 1.0 Page 15 of 24...
Service Guide SW-5.1 1020 1.2.10 VOL (Volume) Inoperative VOL inoperative potentiometer defective or damaged 2. Power failure of U6 volume integrated circuit 3. Broken circuit/ short circuit of 4. Such elements damaged as D6, R59, JK5 and U6 Replace/ repair Version No.
Service Guide SW-5.1 1020 Chapter 3 Block Diagram Electronic volume control SJ3358 Calculation amplification JRC4558 Bass tuning Power amplification Power amplification Power amplification Power amplification TDA2025B TDA2030 TDA2030 TDA2030A Version No. 1.0 Page 18 of 24...
Service Guide SW-5.1 1020 Chapter 5 Material List Subwoofer Ref. NO Description Part NO. KNOB AMP024502. 00G FRONT PANEL AMP024501. 00G VOLUME PCBA ASP024501. G01 WRAP BOARD AHB024501. 00G AMPLIFIER PCBA ASP024502. G01 IC SJ3358 DIP18 AEU000130. 00G IC TEA2025B AEl'000001.
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Service Guide SW-5.1 1020 Satellite Ref. NO Description Part NO. FRONT CABINET AMP024402. 00G SPEAKER AMK340064. 00G SEALING COVER AMP724404. 00G BACK CABINET AMP724403. 00G Version No. 1.0 Page 22 of 24...
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