Service Manual
Table of Contents
Video Wonder DVB-T `0
Chapter 1. INTRODUCTION 2
a.
Hardware 2
b.
Software 2
c.
Block Diagram
2
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
Summary of Contents for VideoWonder DVB-T
Page 1: ...Service Manual VideoWonder DVB T ...
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 18: ...Service Manual Chapter 6 Tools 1 Oscilloscope 2 Soldering iron set Page17 ...
