KDL-60W840B, KDL-70W840B - Sony TV Service Manual (repair manual). Page 21

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KDL-60W840B/70W840B 17
SECTION 3 - REPAIR INFORMATION
REPLACING THE POWER SUPPLY BOARD
1.  Locate and remove the connectors from the Power Supply Board, then 
remove all screws and lift as shown to detach.
 
2.  Install the new Power Supply Board and screws.
3.  Reconnect 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 
Authorized Service Portal
 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 
I/0
 on the TV to turn it ON.
e.  Wait until the Software update is completed.
REMOVING THE SMART CORE BLOCK
1.  Disconnect 2 connectors from Smart Core Block.
2.  Locate and remove 2 screws.
3.  Grasp Smart Core Block and carefully pull upwards, then disconnect 
Harness to detach from Panel.
Smart Core Block
Smart Core Block
4.  Pull Bottom Cover on the direction shown to detach from Top Cover.
Bottom Cover
Bottom Cover
Top Cover
Top Cover
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