Sony KDL-50W790B Service Manual ▷ View online
KDL-50W790B 17
SECTION 3 - REPAIR INFORMATION
REMOVING THE SPEAKERS
1. Press down the connector clip to disconnect from each Speaker, then lift
to detach.
REPLACING THE SWITCH UNIT
1. Disconnect connector from Switch Unit, then release clips to detach.
2. Install the new Switch Unit and connector.
36. 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.
37. Cycle AC Power (Unplug and plug AC Cord from the outlet).
KDL-50W790B 18
SECTION 3 - REPAIR INFORMATION
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
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.
Card.
Wireless
LAN Card
Wireless
LAN Card
BT Module
BT Module
KDL-50W790B 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
1
4-485-111-01
STAND, PIPE
2
4-462-165-02
STAND, NECK
REF. NO.
PART NO.
DESCRIPTION
SECTION 4 - EXPLODED VIEW/PART NUMBER INFORMATION
2
1
KDL-50W790B 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)
51
4-488-606-01
REAR COVER
! 52
1-492-733-31
AC ADAPTOR (120W)
! 53
1-838-955-41
POWER SUPPLY CORD
54
4-484-999-51
LABEL, UNDER TERMINAL
ORDER THIS PART WHEN REPLACING THE REAR COVER.
55
4-484-997-01
LABEL, SIDE TERMINAL
ORDER THIS PART WHEN REPLACING THE REAR COVER.
56
1-798-510-11
SWITCH UNIT
57
4-474-896-01
BRACKET, UNDER
58
4-474-895-01
BRACKET, SIDE
59
1-858-963-11
SPEAKER BOX (LEFT)
! 60
NA
LCD PANEL
FOR ALL LCD PANEL AND TCON BOARD PART NUMBER
INFORMATION REFER TO THE LCD PANELS SERVICE MANUAL.
61
4-440-057-01
SHEET, THERMAL (AYU2)
ORDER THIS PART WHEN REPLACING THE MAIN BOARD.
62
4-256-454-02
SPACER (G A)
63
1-858-963-21
SPEAKER BOX (RIGHT)
64
A-1989-741-A
TUS BOARD, COMPLETE
AFTER REPLACING THE TUNER BOARD, YOU MUST UPDATE
THE SOFTWARE TO THE LATEST VERSION.
65
A-1992-663-A
BAX BOARD, COMPLETE
AFTER REPLACING THE MAIN BOARD, YOU MUST UPDATE
THE SOFTWARE TO THE LATEST VERSION.
60
59
63
62
64
65
Smart Core
Block
58
57
51
52
53
55
56
54
61
KDL-50W790B
REF. NO.
PART NO.
DESCRIPTION
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