KDL-22BX327, KDL-32BX327, KDL-32BX328, KDL-32BX427, KDL-40BX427 (serv.man2) - Sony TV Service Manual (repair manual)

      MODEL                                                    COMMANDER                                              DESTINATION 

KDL-22BX327 RM-YD066  COLUMBIA

KDL-32BX327  

KDL-32BX328  RM-YD066  COLUMBIA

KDL-32BX427 RM-YD066  COLUMBIA

KDL-40BX427 RM-YD066  COLUMBIA

LEVEL 

3/11/2011  

 

 

No revisions or updates are applicable at this time.

1-1.  Circuit Boards Location ...................................................................................................................................................................................... 6

1-2.  Printed Wiring Boards and Schematic Diagrams Information ............................................................................................................................ 7

1-3.  Block Diagram .................................................................................................................................................................................................... 9

1-4.  Connector Diagrams ........................................................................................................................................................................................ 10

1-5.  Schematics and Supporting Information .......................................................................................................................................................... 14

A Board Schematic Diagram (Page 1 of 18) .................................................................................................................................................... 14
A Board Schematic Diagram (Page 2 of 18) .................................................................................................................................................... 15
A Board Schematic Diagram (Page 3 of 18) .................................................................................................................................................... 16
A Board Schematic Diagram (Page 4 of 18) .................................................................................................................................................... 17
A Board Schematic Diagram (Page 5 of 18) .................................................................................................................................................... 18
A Board Schematic Diagram (Page 6 of 18) .................................................................................................................................................... 19
A Board Schematic Diagram (Page 7 of 18) .................................................................................................................................................... 20
A Board Schematic Diagram (Page 8 of 18) .................................................................................................................................................... 21
A Board Schematic Diagram (Page 9 of 18) .................................................................................................................................................... 22
A Board Schematic Diagram (Page 10 of 18) .................................................................................................................................................. 23
A Board Schematic Diagram (Page 11 of 18) .................................................................................................................................................. 24
A Board Schematic Diagram (Page 12 of 18) .................................................................................................................................................. 25
A Board Schematic Diagram (Page 13 of 18) .................................................................................................................................................. 26
A Board Schematic Diagram (Page 14 of 18) .................................................................................................................................................. 27
A Board Schematic Diagram (Page 15 of 18) .................................................................................................................................................. 28
A Board Schematic Diagram (Page16 of 18) ................................................................................................................................................... 29
A Board Schematic Diagram (Page 17 of 18) .................................................................................................................................................. 30
A Board Schematic Diagram (Page 18 of 18) .................................................................................................................................................. 31
GD8 Board Schematic Diagram (KDL-22BX327 Only) (Page 1 of 2) .............................................................................................................. 33
GD8 Board Schematic Diagram (KDL-22BX327 Only) (Page 2 of 2) .............................................................................................................. 34
G13 Board Schematic Diagram (KDL-32BX327/32BX328/32BX427 Only) ..................................................................................................... 36
G14 Board Schematic Diagram (KDL-40BX427 Only) ..................................................................................................................................... 38
H Board Schematic Diagram ............................................................................................................................................................................ 40

There are critical components used in LCD color TVs that are important for safety. These components are identified with shading and 

mark on the schematic diagrams and the electrical parts list. It is essential that these critical parts be replaced only with the part number 

specified in the electrical parts list to prevent electric shock, fire, or other hazard. 

NOTE: Do not modify the original design without obtaining written permission from the manufacturer or you will void the original parts and  
            labor guarantee. 

When installing the LCD panel on a wall, the LCD panel must be secured using the 4 mounting holes on the rear cover. 

Ú do not press on the panel or frame edge to avoid the risk of electric shock.
Ú

  do not scratch or press on the panel with any sharp objects.

Ú  do not leave the module in high temperatures or in areas of high humidity for an extended period of time.
Ú  do not expose the LCD panel to direct sunlight.
Ú

  avoid contact with water. It may cause a short circuit within the module. 

Ú

  disconnect the AC adapter when replacing the backlight (CCFL) or inverter circuit. 

(High voltage occurs at the inverter circuit at 650Vrms.) 

Ú

  always clean the LCD panel with a soft cloth material.

Ú

  use care when handling the wires or connectors of the inverter circuit. Damaging the wires may cause a short. 

Ú  protect the panel from ESD to avoid damaging the electronic circuit (C-MOS). 

• Avoid contact with water as it may a short circuit within the module. 

• If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may 

damage the panel.) 

• If you want to replace with the new backlight (CCFL) or inverter circuit, must disconnect the AC adapter because high 

voltage appears at inverter circuit about 650Vrms. 

• Handle with care wires or connectors of the inverter circuit. If the wires are pressed cause short and may burn or take 

fire. 

K

LV

-

32U100M

 (

UC

)     

5

The circuit boards used in these models have been processed using 
Lead Free Solder. The boards are identified by the LF logo located 
close to the board designation e.g. H1 etc [ see example ]. The 
servicing of these boards requires special precautions to be taken as 
outlined below. 

It is strongly recommended to use Lead Free Solder material in order to guarantee optimal quality of new solder joints.  
Lead Free Solder is available under the following part numbers : 

Due to the higher melting point of Lead Free Solder the soldering iron tip temperature needs to be set to 370 degrees centigrade.  
This requires soldering equipment capable of accurate temperature control coupled with a good heat recovery characteristics. 

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