Table Of Contents - Sony HS75 Service Manual

Table of contents -------------------------------------------------------------------------- 02
1. Precaution ------------------------------------------------------------------------------------------ 03
2 . S p e c i f i c a t i o n - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0 5
2.1 Product character-----------------------------------------------------------05
2.2 Interface description-----------------------------------------------------------------06
2.3 Factory preset mode
3.OSD operation --------------------------------------------------------------------------------08
3.1 Generalization ------------------------------------------------------------------------------08
3.2 Key control
3.3 Common adjustment --------------------------------------------------------------------- 09
4.Disassembly flow chart -------------------------------------------------------------------------22
4.1 Disassembly steps---------------------------------------------------------------------------22
5. Circuit principle analysis --------------------------------------------------------------------26
5.1 Main board -------------------------------------------------------------------------------26
5.1.1 Block diagram
5.1.2 Introduction of IC -------------------------------------------------------27
5.1.3 Introduction of important function -------------------------------------------------27
5.2 PWPC board
5.2.1 Block diagram------------------------------------------------------------------------30
5.2.2 Introduction of IC------------------------------------------------------------------31
5.2.3 Introduction of important function-------------------------------------------------32
6.Trouble shooting ---------------------------------------------------------------------38
6.1 Main board -----------------------------------------------------------------------------38
6.2 PWPC board ----------------------------------------------------------------------------41
7. BOM ---------------------------------------------------------------------------------------43
8. Schematic ------------------------------------------------------------------------------------------59

Table of contents

------------------------------------------------------------07
-------------------------------------------------------------------------08
------------------------------------------------------------------26
-------------------------------------------------------------------------30
2
HS75 Sony