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Service Guide Model No : SW-G2.1 3000

1.2 Power LED no light

Problem

Analyzer and

Identify the Causes

Solutions

1.3 Headphone no sound

Problem

Analyzer and

Identify the Causes

Solution

Power LED no light

Component cold

solder or Short

Circuit

Defective

D1,T1A,U1,U2,

Q1,TL431 or

F4*8

Power Switch(VR1) or

LED defective

Check solder

point on PCBA

Check and

Replace defective

IC or Fuse

Replace defective Power

Switch or LED

Headphone no sound

Component cold

solder or Short

Circuit

J4 Phone jack defective

Check solder

point on PCBA

Replace defective J4 Phone

jack

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Содержание SW-G2.1 3000

Страница 1: ...Service Guide Model No SW G2 1 3000 SERVICE GUIDE KYESYSTEMS CORP Page 1 17 ...

Страница 2: ...Service Guide Model No SW G2 1 3000 Revision History Version Date Change 1 0 16 11 2011 First Release Page 2 17 ...

Страница 3: ...urns 5 1 1 Speaker no sound 1 2 Power LED no light 1 3 Headphone no sound 1 4 Bass Volume no function Chapter 2 Specifications 10 Chapter 3 Block Diagram 11 Chapter 4 Exploded View 12 13 Chapter 5 Part List 14 Chapter 6 Schematic Diagram 15 Chapter 7 Important Notes 16 7 1 Packing Requirement for Sending the PCB Assembly by Post 16 7 2 Short of Spare Parts while Repairing a Speaker System 16 Page ...

Страница 4: ...ironments subject to mist smoke vibration excessive dust salty or greasy air or other corrosive gases and fumes Do not drop or jolt the speakers Do not allow anything to drop into the subwoofer case through its ventilator as it could result in fatal electric shock or fire Place the unit far enough from other equipments for good heat dissipation Disconnect the AC power cord from the AC outlet befor...

Страница 5: ...ew Receiving Defective speakers from Customers Function NG __ __ Analyzing possible malfunction causes Function NG Deciding proceeding the rectification methods Function OK Replace necessary defective parts Function OK Return the speakers with proper repackaging to customers Page 5 17 ...

Страница 6: ...Service Guide Model No SW G2 1 3000 Problems Item Problem Description 1 1 Speaker no sound 1 2 Power LED no light 1 3 Headphone no sound 1 4 Bass Volume no function Page 6 17 ...

Страница 7: ...ems 1 1 One or more channels no sound Line in Audio in jack no function Problem Analyze and Identify Cause Solution Speaker no sound Component cold solder or Short Circuit Defective U1 U2 U3 U4 U5 Speaker cable disconnect JK_IN_D3 5 JK1defective or speaker damaged Check solder point on PCBA Check and Replace defective IC Reconnect speaker cable or replace defective speaker driver and component Pag...

Страница 8: ...ower LED no light Component cold solder or Short Circuit Defective D1 T1A U1 U2 Q1 TL431 or F4 8 Power Switch VR1 or LED defective Check solder point on PCBA Check and Replace defective IC or Fuse Replace defective Power Switch or LED Headphone no sound Component cold solder or Short Circuit J4 Phone jack defective Check solder point on PCBA Replace defective J4 Phone jack Page 8 17 ...

Страница 9: ...3000 1 4 Bass Volume no function Problem Analyzer and Identify the Causes Solution Bass Volume no function Component cold solder or Short Circuit VR1 or VR2 defective Check solder point on PCBA Replace defective VR1 or VR2 Page 9 17 ...

Страница 10: ...it Specifications 1 Out Power at THD 10 Sub W 40 2 Out Power at THD 10 Sat W 15 3 Sensitivity Sub mV 130 30 4 Sensitivity Sat mV 600 60 5 Freq Response 1KHz 3dB Hz 23 126 6 Freq Response 1KHz 3dB Hz 119 20K 7 Separation dB 40 8 S N ratio dB 70 9 Hum Noise Vol max mV 2 Page 10 17 ...

Страница 11: ... SW G2 1 3000 Chapter 3 Block Diagram Audio in LCH RCH Headphone output LCH RCH Power Sw Tone Volume control Audio Amplifier IC TPA3123D2 LCH RCH Page 11 17 PRE Amplifier Line in LCH RCH Mic in LCH RCH Mic out LCH RCH PC SUB ...

Страница 12: ...Service Guide Model No SW G2 1 3000 Chapter 4 Exploded View Page 12 17 ...

Страница 13: ...Service Guide Model No SW G2 1 3000 Page 13 17 ...

Страница 14: ...Service Guide Model No SW G2 1 3000 Page 14 17 ...

Страница 15: ... 3 Photocoupler EL817A 1 U2 4 F09 1028009 00 Transformer 1 T1A 5 Bridge Rectifier 1 D1 6 STEREO CABLE 1 VMC700002 00 10 7 RCA CABLE 1 VRC220001 002 0 8 RCA CABLE 1 VRC155007 002 0 9 POWER CORD 2P 1 VPE003012 002 0 10 SPK UNIT 1 FSA511530 362 4 11 SPK UNIT 1 FSB524065 68 0 12 RCA CABLE 1 VRC155007 001 0 13 RCA CABLE 1 VRC155007 003 0 Page 15 17 ...

Страница 16: ...Service Guide Model No SW G2 1 3000 Chapter 6 Schematic Diagram Pls refer to The Attachment Page 16 17 ...

Страница 17: ...B R23 1K C43 100P R26 10K C40 102 3V MUTE 0V WORK Q1 2SA733 D1 1N4148 C78 470uF 16V NOTE C77 NC 100uF 16V R40 1k R56 3 3k R42 NC 0R C75 NC 470p R51 1k 12V D2 1N4148 C76 104 R53 10K LOUT ROUT 8ohm 40W L_IN R_IN PVCCL 1 SD 2 PVCCL 3 MUTE 4 LIN 5 RIN 6 BYPASS 7 AGND 8 AGND 9 PVCCR 10 VCLAMP 11 PVCCR 12 PGNDR 13 PGNDR 14 ROUT 15 BSR 16 GAIN1 17 GAIN0 18 AVCC 19 AVCC 20 BSL 21 LOUT 22 PGNDL 23 PGNDL 24...

Страница 18: ... 7 8 9 10 11 J4 EAR L IN R IN SW IN SGND L OUT R OUT VCC MUTE SW OUT 3 2 VR1A VOL 10K 4 6 5 VR1B VOL 10K 7 8 VR1C VR_6 3 2 VR2A BASS 10K R26 1K MIC_LIN MIC_RIN PGND 1 2 3 4 5 6 COM2 1 2 3 4 5 6 COM3 C35 33P V R C36 33P L R R L LED1 blue C47 104 R37 1K R31 2K ...

Страница 19: ...TVR1 MOV1 F4 8 T3 15AL 250VAC L1 L2 R1 R2 CX1 C1 T1A R41B TT T1D R17 D3 C2 U2A C5 7 6 3 1 5 8 2 4 U1 R19 Q1 R15 R9 R10 R7 R8 C3 C D2 D D4 R16 R5 R3 R6 R4 D20 C22 C R20 C20 C21 L3 R29 R26 R28 R24 C24 TL431 U2B R13 C6 C4 R14 R21 R25 R27 R22 AC IN AC IN V V C7 D5 ...

Страница 20: ...essary to pack each PCB assembly with a separate static protecting bag in order to avoid static electricity Reliable external packing is also very important when sending PCB assembly by post in that it would avoid unnecessarily lost or damage 7 2 Short of Spare Parts while Repairing a Speaker System If you are short of spare parts when you have some speaker systems waiting to be repaired it would ...

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