Genius VideoWonder DVB-T Manual de usuario
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.BlockDiagram 2
Chapter 2. Testing Procedures 3
a.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
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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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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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REPLACE U4(C50)
REPLACE X2(R38)
REPLACE X1(R21)
Chcek
24.576MHZ
CL
K
Chcek 4MHZ
CLK
Chcek +3.3V
Chcek +3.3V
REPLACE U1(C3)
Chcek 3.3V REPLACE U8(C87)
END
Page4
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b. Check U7Pin1 +5V
U7 PIN 1
Page5
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c. Check U6 Pin2 +3.3V
U6 PIN 2
Page6
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d. Check X3 CLKIN signal (16MHZ)
C22
Page7
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e. Check 16M CLKOUT signal(16MHZ)
C21
Page8
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f.Check X1 CLKIN signal(24.576MHZ)
R21
Page9
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