KDL-40EX620, KDL-40EX621, KDL-46EX620, KDL-46EX621, KDL-55EX620, KDL-55EX621 - Sony TV Service Manual (repair manual). Page 5

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KDL-40EX620/40EX621/46EX620/46EX621/55EX620/55EX621 ii
TABLE OF CONTENTS
Section 4 - Troubleshooting .....................................................33
Overview ..................................................................................33
Updating the Software ............................................................... 33
Triage Chart .............................................................................34
Protection Shutdown ................................................................35
Standby LED Flash Count ......................................................... 35
Diagnostic Code Descriptions ..................................................39
Section 5 - Flow Charts and Diagrams ...................................41
Overview ..................................................................................41
No Power ................................................................................... 42
Standby LED Blinking ................................................................ 44
No Picture/No Sound ................................................................. 50
Section 6 - Disassembly/Part Number Information ...............53
Table-Top Stand Assembly Removal ........................................53
Rear Cover and AC Cover Removal ........................................54
Switch Unit and Speakers Removal .........................................55
LD Board, HLR2 Board and HMS3 Board Removal ................56
G4/G5/G6/G8 (Power Supply) Board and  
BATV (Main) Board Removal .............................................57
KDL-40EX620/40EX621/46EX620/46EX621 Only .................... 57
KDL-55EX620/55EX621 Only ................................................... 58
Panel Brackets and LCD Panel Removal ................................59
Cleaning the LCD Panel ............................................................ 59
Screws .....................................................................................60
Connectors ...............................................................................61
KDL-40EX620/40EX621 Only ................................................... 61
KDL-46EX620/46EX621 Only ................................................... 61
KDL-55EX620/55EX621 Only ................................................... 61
Accessories and Packaging .....................................................62
Optional Accessories ................................................................62
Remote Commander ................................................................62
Wire Dressing ...........................................................................63
KDL-40EX620/40EX621 Only ................................................... 63
KDL-46EX620/46EX621 Only ................................................... 63
KDL-55EX620/55EX621 Only  .................................................. 63
Section 7 - Service Adjustments .............................................64
Overview ..................................................................................64
Updating the Software ..............................................................64
Accessing Service Adjustment Mode .......................................64
Viewing or Changing Service Data ............................................ 65
Updating Service Adjustment Data When Replacing the Main 
Board ..................................................................................66
Selecting the Segment Code ..................................................... 66
Selecting the Destination ........................................................... 67
Selecting the Model Name ........................................................ 69
Selecting the BU Trans .............................................................. 70
Adding the Serial Number ......................................................... 71
Confirming the Model ID and Product ID ................................... 73
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