KDL-60W850B, KDL-70W850B - Sony TV Service Manual (repair manual). Page 17

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KDL-60W850B/70W850B 13
SECTION 3 - REPAIR INFORMATION
6.  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.
7.  To access 
Service Mode, turn TV ON and OFF again then press the 
following buttons within 1 second of each other:
DISPLAY
 
 
Channel
 
5
 
 
Volume
 
+
 
 
Power 
I/0
8.  When the 
DIGITAL Menu appears, press 
2
 until 
002 MODEL 
category displays.
DIGITAL
SERVICE
002 MODEL
000 BOARD CHECK
REPLACING THE MAIN BOARD / TUNER BOARD
The Main Board used in these models is available for repair. For Part 
Number information refer to
 
Section 4 - Exploded View/Part Number 
Information on page 19.
1.  Locate and remove 1 screw from the Bracket Rear and lift to detach.
Bracket Rear
Bracket Rear
2.  Slide the Side Bracket and Under Bracket to detach from Main Board.
Under Bracket
Under Bracket
Side 
Bracket
Side 
Bracket
3.  Locate and disconnect the connectors. Then remove all screws from 
the Tuner Board and Main Board and lift to detach.
4.  Install the new Main Board and/or Tuner Board and screws.
5.  Reconnect all connectors.
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