Sony KDL-70W856B Service Manual ▷ View online
KDL-70W856B 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
website.
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
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
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
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.
KDL-70W856B 14
SECTION 3 - REPAIR INFORMATION
9. Press
1
until
002 DEST item displays.
DIGITAL
SERVICE
002 MODEL
002 DEST
SBTVD-T_BASE
CAUTION: If the incorrect Destination Data Value is selected,
it may corrupt the Sofware requiring a Main Board replacement.
it may corrupt the Sofware requiring a Main Board replacement.
10. Press
3
until the correct destination of the TV displays.
(Use the table below for reference).
Model Name
Destination
Data Value
BRAZIL
SBTVD-T_BASE
KDL-70W856B
11. Press
MUTE
then
0
to save the changes.
DIGITAL
SERVICE
002 MODEL
002 DEST
WRITE
SBTVD-T_BASE
12. Press
1
until
003 MODELNAME displays.
DIGITAL
SERVICE
002 MODEL
003 MODELNAME
_________
13. Press
3
until the model displayed matches the model of the TV.
CAUTION: The Model Name can only be selected once. Be sure
to verify the information is correct before saving the changes.
to verify the information is correct before saving the changes.
14. Press
MUTE
then
0
to save the changes.
DIGITAL
SERVICE
002 MODEL
003 MODELNAME
KDL-70W856B
WRITE
15. Locate the Serial Number for the TV on the side of the Rear Cover.
MODEL NO
KDL-70W856B
SERIAL NO
2000001
16. Press
1
until
004 SERIAL item displays.
DIGITAL
SERVICE
002 MODEL
004 SERIAL
17. Press
0
to display the
Serial Number Edit option.
DIGITAL (MODEL)
SERVICE
SerialNumberEdit
*1 SerialNumber
KDL-70W856B 15
SECTION 3 - REPAIR INFORMATION
18. Press
to display the
Serial Number input screen.
DIGITAL (MODEL)
SERVICE
SerialNumberEdit
*1 SerialNumber
Please Input serial number
(0000000-99999999)
_ _ _ _ _ _ _
CAUTION: The Serial Number can only be selected once. Be sure
to verify the information is correct before saving the changes.
to verify the information is correct before saving the changes.
19. Enter the Serial Number of the TV.
NOTE:
If the incorrect Serial Number is entered, press
RETURN
to go back to the Serial Number input screen and re-enter
the correct number.
the correct number.
20. Press
to save the Serial Number.
DIGITAL (MODEL)
SERVICE
SerialNumberEdit
*1 SerialNumber
2000001
WRITE
21. Press
1
until
006 VAR_TYPE item displays.
DIGITAL
SERVICE
002 MODEL
006 VAR_TYPE
22. Press
3
until
STD option displays.
DIGITAL
SERVICE
002 MODEL
006 VAR_TYPE
STD
23. Press
MUTE
then
0
to save the changes.
DIGITAL
SERVICE
002 MODEL
006 VAR_TYPE
STD
WRITE
24. Cycle AC Power (Unplug and plug AC Cord from the outlet).
25. Access
Service Mode, by pressing the following buttons within
1 second of each other:
DISPLAY
Channel
5
Volume
+
Power
I/0
26. When the
DIGITAL Menu appears, press
2
until
002 MODEL
category displays.
DIGITAL
SERVICE
002 MODEL
000 BOARD CHECK
000 BOARD CHECK
27. Press
0
to select the
000 BOARD CHECK item.
DIGITAL (MODEL)
SERVICE
Board Check
1. Replace MAIN BOARD (and TUNER BOARD)
2. Replace TUNER BOARD only
2. Replace TUNER BOARD only
KDL-70W856B 16
SECTION 3 - REPAIR INFORMATION
When replacing the Main Board and/or Tuner Board:
28. Press
1
to verify the Main Board replacement results.
NOTE:
Either one of the following messages indicates
a correct process.
DIGITAL (MODEL)
SERVICE
Board Check
OK
TUNER BOARD OPTION: STANDARD
TUNER BOARD OPTION: STANDARD
DIGITAL (MODEL)
SERVICE
Board Check
OK
TUNER BOARD OPTION: PCA / HTL
TUNER BOARD OPTION is changed correctly
TUNER BOARD OPTION: PCA / HTL
TUNER BOARD OPTION is changed correctly
CAUTION: If the Main Board is a mismatch to the Tuner Board,
a “NG: WRONG COMBINATION OF MAIN BOARD AND TUNER
BOARD” message will display.
a “NG: WRONG COMBINATION OF MAIN BOARD AND TUNER
BOARD” message will display.
29. Press
RETURN
.
When replacing the Tuner Board only:
30. Press
2
to verify the Tuner Board replacement results.
DIGITAL (MODEL)
SERVICE
Board Check
OK
TUNER BOARD OPTION: STANDARD
TUNER BOARD OPTION: STANDARD
CAUTION: If the Tuner Board is a mismatch to the Main Board,
a “NG: DIFFERENT KIND OF TUNER BOARD HAS BEEN
CONNECTED” message will display.
a “NG: DIFFERENT KIND OF TUNER BOARD HAS BEEN
CONNECTED” message will display.
31. Press
RETURN
.
32. Turn the TV OFF.
33. Press
on the Remote Commander and Power button
I/0
on TV
to set unit to Shipping Condition.
Click on the first or last page to see other KDL-70W856B service manuals if exist.