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
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