KDL-70R520A - Sony TV Service Manual (repair manual). Page 2

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KDL-70R520A i
TABLE OF CONTENTS
Cautions and Warnings ...................................................................................ii
Section 1 - Specifications and Layouts .........................................................1
Specifications ................................................................................................1
Board Layout .................................................................................................2
KDL-70R520A ........................................................................................................2
Wire Dressing ................................................................................................3
KDL-70R520A ........................................................................................................3
Section 2 - Troubleshooting ...........................................................................4
Diagnosing the Error .....................................................................................4
Viewing the Self Check Diagnosis History ............................................................. 4
Triage Chart ...................................................................................................5
Flowcharts and Diagrams ..............................................................................6
Overall Block Diagram ...........................................................................................6
Power and Control Block Diagram.........................................................................7
No Power Flowchart ..............................................................................................8
Standby LED Blinking Flowchart ...........................................................................9
No Video Flowchart .............................................................................................10
Video Distortion Flowchart ................................................................................... 11
Section 3 - Repair Information ......................................................................12
Repairing the TV ..........................................................................................12
Removing the Table-Top Stand ............................................................................12
Removing the Rear Cover ...................................................................................12
Replacing the Main Board ...........................................................................13
Replacing the Power Supply Board .............................................................17
Removing the Switch Unit ...........................................................................18
Removing the Speakers ..............................................................................19
Removing the Bezel and H Board ...............................................................19
Section 4 - Exploded View/Part Number Information .................................20
Table Top-Stand ...........................................................................................20
KDL-70R520A .............................................................................................21
Connectors ..................................................................................................22
KDL-70R520A ......................................................................................................22
Screws .........................................................................................................23
Section 5 - Accessories/Part Number Information .....................................24
Accessories and Packaging ........................................................................24
Optional Accessories ...................................................................................24
Remote Commander ...................................................................................24
Appendix A: Encryption Key Components ............................................... A-1
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