Genius VideoWonder DVB-T Service Manual Download Page 6 | Manualshive

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Service Manual

b. Check 5V

U7 PIN 1

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Summary of Contents for VideoWonder DVB-T

Page 1: ...Service Manual VideoWonder DVB T ...

Page 2: ...Testing flow chart 3 b Check VCC 5V 5 cCheck VCC 3 3V 6 d Check 16MHZ CLKIN signal X3 7 eCheck 16MHZ CLKOUT signal X3 8 fCheck 24 576MHZ CLKIN signal X1 9 gCheck 4MHZ CLKIN signal X2 10 hCheck U4 3 3V 11 iCheck U1 3 3V 12 jCheck U8 5V 13 Chapter 3 Troubleshooting Guide 14 Chapter 4 Removal and Reqlacement 15 Chapter 5 Parts list 16 Chapter6 Tools 17 Page1 ...

Page 3: ...Service Manual Chapter 1 INTRODUCTION a Hardware PIII 800 MHZ or higher above 256M RAM b Software Win2000 XP above c Block Diagram Page2 ...

Page 4: ...Service Manual Chapter 2 Testing Procedures a Testing flow chart Page3 REPLACE U7 REPLACE U6 REPLACE X3 C22 REPLACE X3 C21 START Chcek VCC 5V Chcek VCC 3 3V Chcek 16MHZ CLKIN Chcek 16MHZ CLKOUT ...

Page 5: ...Service Manual REPLACE U4 C50 REPLACE X2 R38 REPLACE X1 R21 Chcek 24 576MHZ CLK Chcek 4MHZ CLK Chcek 3 3V Chcek 3 3V REPLACE U1 C3 Chcek 3 3V REPLACE U8 C87 END Page4 ...

Page 6: ...Service Manual b Check U7Pin1 5V U7 PIN 1 Page5 ...

Page 7: ...Service Manual c Check U6 Pin2 3 3V U6 PIN 2 Page6 ...

Page 8: ...Service Manual d Check X3 CLKIN signal 16MHZ C22 Page7 ...

Page 9: ...Service Manual e Check 16M CLKOUT signal 16MHZ C21 Page8 ...

Page 10: ...Service Manual f Check X1 CLKIN signal 24 576MHZ R21 Page9 ...

Page 11: ...Service Manual g Check X2CLKIN signal 4MHZ R38 Page10 ...

Page 12: ...Service Manual h Check U4 3 3V C50 Page11 ...

Page 13: ...Service Manual i Check U1 3 3V C3 Page12 ...

Page 14: ...Service Manual j Check U8 5V C87 Page13 ...

Page 15: ...oubleshooting Guide Problems Condition Probable Reasons Solutions 1 No Image No image 1 Component damage Change all the patrs below No voice 1 U1 7 X3 2 U4 3 U6 4 U7 5 X1 6 X2 2 No Remote No Power Remote IC Fail Change U8 Page14 ...

Page 16: ...Replacement Step Description Pictuer 1 finished products TV card diagram before plug in any video cable 2 TV Cable Plug in the TV cable first 3 AV SV Cable Then plug in the AV SV Cable 4 Remote Cable Lastly plug in the remote cable Page15 ...

Page 17: ...Description Parts number Description Parts numbe U1 8274 102100827400 X1 24 576MHZ 201512457601 U4 7134 102100713400 X2 4MHZ 201510400001 U6 FS8860 101900886000 X3 16MHZ 201511600000 U7 FS8860 101900886000 U8 MDT2005ES 101900200500 Page16 ...

Page 18: ...Service Manual Chapter 6 Tools 1 Oscilloscope 2 Soldering iron set Page17 ...

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