Genius TVB-S201 PRO, Service Manual

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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