Service Manual
Table of Contents
TVB-S201 PRO ...........................................................................................................................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 REG2 Pin 2 Signal........................................................................................................6
d. Check REG5 Pin 2 Signal........................................................................................................7
e. Check REG3 Pin 2 Signal........................................................................................................8
f. Check REG4 Pin 2 Signal.........................................................................................................9
g. Check X1,U22 Pin 26 X’TAL Signal.....................................................................................10
h. Check X2 Pin 3,U5 Pin 62,U1 Pin 41 OSC Signal................................................................11
i. Check Y301 X’TAL Signal.....................................................................................................12
j. Check U1 CLK_SAA Signal ..................................................................................................13
k. Check U1 RAM_CLK Signal................................................................................................14
Chapter 3. Troubleshooting Guide..................................................................................................15
Chapter 4. Removal and Replacement............................................................................................16
Chapter 5. Parts list.........................................................................................................................17
Chapter 6. Tools..............................................................................................................................17
Version 1.0
age 1
(1 pages)
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