KDL-46W705A, KDL-50W705A - Sony TV Service Manual (repair manual). Page 20

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KDL-46W705A/50W705A 16
SECTION 3 - REPAIR INFORMATION
REPLACING THE POWER SUPPLY BOARD
1.  Disconnect all the connectors from Power Supply Board.
 
2.  Remove 5 screws and lift to detach.
3.  Install the new Power Supply Board, screws and all connectors.
4.  Update the Software.
After ALL repairs UPDATE the SOFTWARE to the latest version. 
Instructions are included with the Software package on the Sony 
website.
a.  Insert the USB device with the latest Software into one of the TVs’  
 
USB ports.
b.  Connect TV to AC power.
c.  Wait at least 20 seconds.
d.  Press 
POWER
 on the remote to turn ON the TV.
e.  Wait until the Software update is complete.
REPLACING THE SWITCH UNIT
1.  Disconnect the 2 connectors. Remove 2 screws from Switch Unit and lift 
to detach.
2.  Install the new Switch Unit, screws and connectors.
REMOVING THE SPEAKERS
1.  Press down the connector clip and pull to remove, then lift the Speaker 
to detach.
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