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KYE Systems Corp. Genius SP-HF1201A, Service Manual

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KYE Systems Corp. Genius SP-HF1201A Service Manual Download Page 5

Service Guide                                                                      Model No : SP-HF1201A 

                                                                                                     

 

Chapter 1. How to Handle Defective Returns

 

Overview

 

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 5/19 

Summary of Contents for Genius SP-HF1201A

Page 1: ...Service Guide Model No SP HF1201A SERVICE GUIDE KYESYSTEMS CORP Page 1 19 ...

Page 2: ...Service Guide Model No SP HF1201A Revision History Version Date Change 1 0 16 04 2010 First Release Page 2 19 ...

Page 3: ...s 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 18 Chapter 7 Important Notes 19 7 1 Packing Requirement for Sending the PCB Assembly by Post 19 7 2 Short of Spare Parts while Repairing a Speaker System 19 Page ...

Page 4: ...ronments 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 before...

Page 5: ...w 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 19 ...

Page 6: ...Service Guide Model No SP HF1201A Problems Item Problem Description 1 1 Speaker no sound 1 2 Power LED no light 1 3 Headphone no sound 1 4 Bass Treble Volume no function Page 6 19 ...

Page 7: ... problems 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 U8 Speaker cable disconnect Jack2 or J2 defective or speaker damaged Check solder point on PCBA Check and Replace defective IC Reconnect speaker cable or replace defective speaker driver and component Page 7 19 ...

Page 8: ...tion Power LED no light Component cold solder or Short Circuit Defective U1 U2 U3 T1 or F1 Power Switch 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 JK1 Phone jack defective Check solder point on PCBA Replace defective JK1 Phone jack Page 8 19 ...

Page 9: ... 1 4 Bass Treble 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 19 ...

Page 10: ...F1201A Chapter 2 Specifications NO Description Unit Specifications 1 Out Power at THD 10 W 15 2 Sensitivity mV 600 50 3 Freq Response 1KHz 3dB Hz 65 20K 10 4 Separation dB 40 5 S N ratio dB 70 6 Hum Noise Vol max mV 2 Page 10 19 ...

Page 11: ...rvice Guide Model No SP HF1201A Chapter 3 Block Diagram Audio in LCH RCH Headphone output LCH RCH Power Sw Tone Volume control Audio Amplifier IC MP7742DF LCH RCH Page 11 19 PRE Amplifier Line in LCH RCH ...

Page 12: ...Service Guide Model No SP HF1201A Chapter 4 Exploded View Page 12 19 ...

Page 13: ...Service Guide Model No SP HF1201A Page 13 19 ...

Page 14: ...８Ｌ１２ IC 1 IC1 2 MP7745DF IC 1 U1 3 BPC817 IC 1 U3 4 YJ KB２８０６Ａ Transformer 1 T1 5 GBP206 Rectifier 1 D1 6 ＦＳＤＭ０４６５ＲＴ IC 1 U1 7 TL431 IC 1 U2 8 MUR620CT 2 D4 9 POWER CORD 2P 1 VPE003012 002 0 10 SPK UNIT 1 FSI541508 1600 11 SPK UNIT 1 FSA521540 440 0 12 RCA CABLE 1 VRC220001 001 0 Page 14 19 ...

Page 15: ...Service Guide Model No SP HF1201A Chapter 6 Schematic Diagram Pls refer to Next Pages Page 15 19 ...

Page 16: ...Page 16 19 Model No SP HF1201A ...

Page 17: ...Page 17 19 Model No SP HF1201A ...

Page 18: ...Page 18 19 Model No SP HF1201A ...

Page 19: ...ssary 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 b...

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