KDL-32EX720, KDL-32EX723, KDL-40EX720, KDL-40EX723, KDL-46EX720, KDL-46EX723, KDL-55EX720, KDL-55EX723 (serv.man2) - Sony TV Service Manual (repair manual)

      MODEL                                                    COMMANDER                                              DESTINATION 

KDL-32EX720 RM-YD061 

KDL-32EX720  RM-YD070 

KDL-32EX723  RM-ED044 

KDL-40EX720  

KDL-40EX720  RM-YD070 

KDL-40EX723  

KDL-40EX723  RM-YD069 

KDL-46EX720  

KDL-46EX720  RM-YD070 

KDL-46EX723  

KDL-55EX720  RM-YD061 

KDL-55EX723 RM-YD059 

LEVEL 

2/11/2011  

 

 

Original Manual Release Date.

9/19/2011 

   Reissue 

Entire 

Manual.

11/9/2011  

 

 

Added Accessories and Packing to Electrical Parts List. Replaced pages 62-63.

1-1.  Circuit Boards Location ......................................................................................................................................................................................6
1-2.  Printed Wiring Boards and Schematic Diagrams Information ............................................................................................................................8
1-3.  Block Diagram ..................................................................................................................................................................................................10
1-4.  Connector Diagrams ........................................................................................................................................................................................ 11
1-5.  Schematics and Supporting Information ..........................................................................................................................................................17

BATV Board Schematic Diagram (1 of 12) .......................................................................................................................................................17
BATV Board Schematic Diagram (2 of 12) .......................................................................................................................................................18
BATV Board Schematic Diagram (3 of 12) .......................................................................................................................................................19
BATV Board Schematic Diagram (4 of 12) .......................................................................................................................................................20
BATV Board Schematic Diagram (5 of 12) .......................................................................................................................................................21
BATV Board Schematic Diagram (6 of 12) .......................................................................................................................................................22
BATV Board Schematic Diagram (7 of 12) .......................................................................................................................................................23
BATV Board Schematic Diagram (8 of 12) .......................................................................................................................................................24
BATV Board Schematic Diagram (9 of 12) .......................................................................................................................................................25
BATV Board Schematic Diagram (10 of 12) .....................................................................................................................................................26
BATV Board Schematic Diagram (11 of 12) .....................................................................................................................................................27
BATV Board Schematic Diagram (12 of 12) .....................................................................................................................................................28
G4 Board Schematic Diagram (KDL-40EX720/40EX723 Only) (Page 1 of 2) .................................................................................................31
G4 Board Schematic Diagram (KDL-40EX720/40EX723 Only) (Page 2 of 2) .................................................................................................32
G5 Board Schematic Diagram (KDL-46EX720/46EX723 Only) .......................................................................................................................34
G6 Board Schematic Diagram (KDL-55EX720/55EX723 Only) .......................................................................................................................36
G8 Board Schematic Diagram (KDL-55EX720/55EX723 Only) .......................................................................................................................38
G10 Board Schematic Diagram (KDL-32EX720/32EX723 Only) .....................................................................................................................40
HEM2 Board Schematic Diagram ....................................................................................................................................................................42
HLR2 Board Schematic Diagram .....................................................................................................................................................................44
HMS3 Board Schematic Diagram ....................................................................................................................................................................46
LD Board Schematic Diagram ..........................................................................................................................................................................48

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.

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  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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