KDL-46BX427 (serv.man2) - Sony TV Service Manual (repair manual)

kdl-46bx427 (serv.man2) service manual
Model
KDL-46BX427 (serv.man2)
Pages
34
Size
21.61 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LEVEL 3
File
kdl-46bx427-sm2.pdf
Date

Read Sony KDL-46BX427 (serv.man2) Service Manual online

LCD DIGITAL COLOR TV
  SERVICE MANUAL 
AZ2-EK
 
CHASSIS
 
      MODEL                                                    COMMANDER                                              DESTINATION 
9-883-858-51
KDL-46BX427 RM-YD066  COLUMBIA
LEVEL 
3
CONFIDENTIAL
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
CONFIDENTIAL
ELECTRICAL SERVICE MANUAL
INTERNAL ONLY
ORIGINAL MANUAL ISSUE DATE: 4/2011
REVISION 
DATE 
  SUBJECT     
4/27/2011  
 
 
No revisions or updates are applicable at this time.
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KDL-46BX427
KDL-46BX427
TABLE OF CONTENTS
SECTION TITLE   
PAGE
Safety-Related Component Warning ...............................................................................................................................................................................3
Safety Check-Out...............................................................................................................................................................................................................5
SECTION 1:  DIAGRAMS ...................................................................................................................................................................................................6
1-1.  Circuit Boards Location ......................................................................................................................................................................................6
1-2.  Printed Wiring Boards and Schematic Diagrams Information ............................................................................................................................6
1-3.  Block Diagram ....................................................................................................................................................................................................8
1-4.  Connector Diagram ............................................................................................................................................................................................9
1-5.  Schematics and Supporting Information ..........................................................................................................................................................10
A Board Schematic Diagram (Page 1 of 18) ....................................................................................................................................................10
A Board Schematic Diagram (Page 2 of 18) .................................................................................................................................................... 11
A Board Schematic Diagram (Page 3 of 18) ....................................................................................................................................................12
A Board Schematic Diagram (Page 4 of 18) ....................................................................................................................................................13
A Board Schematic Diagram (Page 5 of 18) ....................................................................................................................................................14
A Board Schematic Diagram (Page 6 of 18) ....................................................................................................................................................15
A Board Schematic Diagram (Page 7 of 18) ....................................................................................................................................................16
A Board Schematic Diagram (Page 8 of 18) ....................................................................................................................................................17
A Board Schematic Diagram (Page 9 of 18) ....................................................................................................................................................18
A Board Schematic Diagram (Page 10 of 18) ..................................................................................................................................................19
A Board Schematic Diagram (Page 11 of 18) ..................................................................................................................................................20
A Board Schematic Diagram (Page 12 of 18) ..................................................................................................................................................21
A Board Schematic Diagram (Page 13 of 18) ..................................................................................................................................................22
A Board Schematic Diagram (Page 14 of 18) ..................................................................................................................................................23
A Board Schematic Diagram (Page 15 of 18) ..................................................................................................................................................24
A Board Schematic Diagram (Page16 of 18) ...................................................................................................................................................25
A Board Schematic Diagram (Page 17 of 18) ..................................................................................................................................................26
A Board Schematic Diagram (Page 18 of 18) ..................................................................................................................................................27
G3 Board Schematic Diagram .........................................................................................................................................................................29
H Board Schematic Diagram ............................................................................................................................................................................31
SECTION 2:  ELECTRICAL PARTS LIST ........................................................................................................................................................................33
APPENDIX A:  ENCRYPTION KEY COMPONENTS ..................................................................................................................................................... A-1
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KDL-46BX427
KDL-46BX427
SAFETY-RELATED COMPONENT WARNING
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.
USE CAUTION WHEN HANDLING THE LCD PANEL
When repairing the LCD panel, be sure you are grounded by using a wrist band.
When installing the LCD panel on a wall, the LCD panel must be secured using the 4 mounting holes on the rear cover.
To avoid damaging the LCD panel:
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).
LEAKAGE CURRENT HOT CHECK CIRCUIT
• 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.
Leakage Current Hot Check Circuit 
 
 
 
 
KLV-32U100M (UC)     5
4
KDL-46BX427
KDL-46BX427
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. 
example
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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Download Sony KDL-46BX427 (serv.man2) Service Manual (Repair Manual)

Here you can read online and download Sony KDL-46BX427 (serv.man2) Service Manual in PDF. KDL-46BX427 (serv.man2) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony KDL-46BX427 (serv.man2) TV. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.