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Genius VideoWonder DVB-T Service Manual

Made by: Genius
Type: Service Manual
Category: TV Tuner
Pages: 18
Size: 0.62 MB

 

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Service     Manual 

 

 

 

                             

VideoWonder    DVB-T 

 


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Service Manual 

Table  of  Contents 

Video Wonder DVB-T                                                `0   

 

Chapter 1. INTRODUCTION                                           2

 

    a.

 Hardware                                                                                                              2

 

    b.

Software                                                                                                                2

 

    c.

Block Diagram                                                                                                     

 

Chapter 2. Testing Procedures 

                                                                                      3 

a

.Testing flow chart

                                                                                                    3 

b.

Check VCC +5V 

                                                                                                    5 

c

Check VCC +3.3V

                                                                                                    6 

d.

Check 16MHZ CLKIN signal(X3)

                                                                          7 

e

Check 16MHZ CLKOUT signal (X3) 

                                                                    8 

f

Check 24.576MHZ CLKIN signal(X1)

                                                                    9 

g

Check 4MHZ CLKIN signal(X2)

                                                                          10 

h

Check U4 +3.3V

                                                                                                      11 

i

Check U1 +3.3V 

                                                                                                    12 

j

Check U8 +5V

                                                                                                        13 

     

Chapter 3.  Troubleshooting  Guide

                                                                            14 

 

Chapter 4.  Removal and  Reqlacement

                                                                      15 

 

Chapter 5.  Parts   list

                                                                                                16 

 

Chapter6.    Tools

                                                                                                        17 

 

 

 

 

 

 

 

                                                                                                                                             

                                                                Page1 

 


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Service Manual 

Chapter 1. INTRODUCTION 

     

a. Hardware 

PIII 800 MHZ or higher above 

256M RAM 

b. Software 

Win2000 / XP    above 

c. Block 

Diagram 

 

 

 

 

 

 

                                                                                                                                         

                                                                  Page2 

 


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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 

 

 


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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 

 


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Service Manual 

b.  Check U7Pin1 +5V 

 

 

 

 

U7 PIN 1

                                                                                                                                           

                                                                  Page5 

 


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Service Manual 

c.  Check U6 Pin2 +3.3V 

 

 

 

 

U6 PIN 2 

                                                                                                                                           

                                                                  Page6 

 


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Service Manual 

d.  Check X3 CLKIN signal (16MHZ) 

 

 

 

   

C22 

                                                                                                                                 

Page7 

 


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Service Manual 

e.  Check 16M CLKOUT signal(16MHZ) 

 

 

 

 

C21 

                                                                                                                                           

                                                              Page8 

 


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Service Manual 

f.Check X1 CLKIN signal(24.576MHZ) 

 

 

 

 

 R21

                                                                                                                                           

                                                                  Page9 

 


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Service Manual 

g.Check  X2CLKIN signal(4MHZ) 

 

 

 

 

R38 

                                                                                                                                           

                                                                  Page10 

 


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Service Manual 

h.Check U4 +3.3V 

 

 

 

 

C50 

                                                                                                                                           

                                                                  Page11 

 


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Service Manual 

i.Check U1 +3.3V 

 

 

 

C3 

                                                                                                                                           

                                                                  Page12 

 


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Service Manual 

j.Check U8 +5V 

 

 

 

C87 

                                                                                                                                           

                                                                  Page13 

 


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Service Manual 

 

Chapter3. Troubleshooting 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 

 


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Service Manual 

Chapter 4. Removal and 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 

 


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Service Manual 

Chapter 5. Parts list 

 

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 

 


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Service Manual 

Chapter 6. Tools 

1. Oscilloscope 

2. Soldering-iron 

set 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

                                                                                                                                           

                                                                  Page17