Sony KDL-70W856B Service Manual ▷ View online
KDL-70W856B 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
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 remote to turn ON the TV.
e. Wait until the Software update is completed.
34. Clear the
Self Check screen.
a. Press Power
I/0
to exit
Service Mode.
b. Press the following buttons on the
Remote Commander within
1 second of each other:
DISPLAY
Channel
5
Volume
-
Power
I/0
SELF CHECK
000 RESERVED
--------------------- --------------------- --------------------- 00
000 RESERVED
--------------------- --------------------- --------------------- 00
002 MAIN_POWE --------------------- --------------------- --------------------- 00
003 DC_ALERT
003 DC_ALERT
--------------------- --------------------- --------------------- 00
003 AUD_PROT
--------------------- --------------------- --------------------- 00
003 HDMI_EQ
--------------------- --------------------- --------------------- 00
003 TU_DEMOD --------------------- --------------------- --------------------- 00
004 VLED
004 VLED
--------------------- --------------------- --------------------- 00
004 LD_ERR
--------------------- --------------------- --------------------- 00
005 HFR_ERR
--------------------- --------------------- --------------------- 00
005 TCON_ERR
120123132522 120123113645 --------------------- 02
005 P_ID-ERR
--------------------- --------------------- --------------------- 00
006 BACKLITE
--------------------- --------------------- -------------------- 00
007 TEMP_ERR
--------------------- --------------------- --------------------- 00
007 FAN_ERR
--------------------- --------------------- --------------------- 00
010 EMITTER
--------------------- --------------------- --------------------- 00
101 VPC_WDT
--------------------- --------------------- --------------------- 00
102 MEPS_WDT --------------------- --------------------- --------------------- 00
103 HOST_WDT --------------------- --------------------- --------------------- 00
104 STBY_WDT
103 HOST_WDT --------------------- --------------------- --------------------- 00
104 STBY_WDT
--------------------- --------------------- --------------------- 00
00345 000333 06789
Error Count
c. To clear the error history and error count press
8
0
.
d. Press Power
I/0
to exit
Self Check Mode.
35. Cycle AC Power (Unplug and plug AC Cord from the outlet).
KDL-70W856B 18
SECTION 3 - REPAIR INFORMATION
5. Release 6 hooks on the sequence shown by pulling apart the Bottom
Cover to access the HSC2 Board.
1
2
3
4
5
6
1
2
3
4
5
6
6. Unclamp 2 side clips from the HSC2 Board and lift as shown to detach.
HSC2 Board
HSC2 Board
7. Release 4 hooks to remove the back cover from the front cover.
Locate and unclamp the side clips to detach the BT Module and
Wireless LAN Card.
Wireless LAN Card.
Wireless
LAN Card
Wireless
LAN Card
BT Module
BT Module
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
KDL-70W856B 19
Components not identified by a part number or description
are not stocked because they are seldom required for routine
service.
The component parts of an assembly are indicated by the reference numbers in
the far right column of the parts list and within the dotted lines of the diagram.
NOTE: The components identified by shading and
!
mark are critical for safety.
Replace only with part number specified.
NOTE: The components identified by a red outline and a mark contain confidential
information. Specific instructions must be adhered to whenever these components are
repaired and/or replaced. (See Appendix A)
TABLE TOP STAND
REF. NO.
PART NO.
DESCRIPTION
SECTION 4 - EXPLODED VIEW/PART NUMBER INFORMATION
1
2
1
A-2034-388-A
STAND RIGHT
2
A-2034-382-A
STAND LEFT
KDL-70W856B 20
SECTION 4 - EXPLODED VIEW/PART NUMBER INFORMATION
NOTE: The components identified by shading and
!
mark are critical for safety.
Replace only with part number specified.
NOTE: The components identified by a red outline and a mark contain confidential
information. Specific instructions must be adhered to whenever these components are
repaired and/or replaced. (See Appendix A)
REF. NO.
PART NO.
DESCRIPTION
51
A-1997-419-A
REAR COVER
52
4-480-119-01
AC COVER
! 53
1-839-695-21
POWER SUPPLY CORD
54
4-262-708-04
CLAMPER, CABLE
55
A-2035-754-A
COVER UNDER
56
4-528-436-01
LABEL, REAR TERMINAL
ORDER THIS PART WHEN REPLACING THE REAR COVER.
57
4-484-999-61
LABEL, UNDER TERMINAL
ORDER THIS PART WHEN REPLACING THE REAR COVER.
58
4-484-998-01
LABEL, SIDE TERMINAL
ORDER THIS PART WHEN REPLACING THE REAR COVER.
59
A-1997-422-A
BRACKET SP (LEFT)
60
1-859-005-11
SPEAKER BOX (LEFT)
61
4-484-096-01
BRACKET, VESA (S)
62
A-1997-423-A
BRACKET SP (RIGHT)
63
1-859-005-21
SPEAKER BOX (RIGHT)
64
4-484-098-01
BRACKET, VESA (L)
Smart Core
Block
Smart Core
Block
t C
53
52
54
58
59
60
62
63
61
61
57
55
56
64
64
51
KDL-70W856B
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