Sony KDL-32BX355 / KDL-32BX356 / KDL-40BX455 / KDL-46BX455 Service Manual ▷ View online
KDL-32BX355/32BX356/40BX455/46BX455 13
SECTION 3 - FLOW CHARTS AND DIAGRAMS
NO VIDEO
No Video
Backlights
turned on?
Unplug LVDS
connector at
TCON while unit
is running. This
may need to be
done more than
once
Any flashes
seen on
screen?
Yes
No
Any OSD
graphics
present?
No
Main Board*
No
LCD Panel*
Inverter MT
Board*
Yes
Yes
Main Board*
LCD Panel*
NO VIDEO FLOWCHART
*For Part Number information, Refer to
“Section 4 - Disassembly/Part Number Information” on page 15
.
KDL-32BX355/32BX356/40BX455/46BX455 14
SECTION 3 - FLOW CHARTS AND DIAGRAMS
*For Part Number information, Refer to
“Section 4 - Disassembly/Part Number Information” on page 15
.
Video Distortion
Is distortion
across entire
screen?
Any horizontal
lines?
No
No
Yes
Yes
Improper of
missing colors?
Yes
Main Board*
No
Vertical lines
or bars?
No
Yes
Lines move
when wide-mode
changed?
Yes
No
LCD Panel*
TCON Board*
Main Board*
LCD Panel*
Any single or
isolated vertical
lines?
Yes
LCD Panel*
More than 1
vertical band?
No
Yes
LCD Panel*
TCON Board*
VIDEO DISTORTION FLOWCHART
KDL-32BX355/32BX356/40BX455/46BX455
15
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.
*
Items marked with an asterisk are not stocked since
they are seldom required for routine service. Expect
some delay when ordering these components.
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: Encryption Key Components in the back of this manual.
SECTION 4 - DISASSEMBLY/PART NUMBER INFORMATION
TABLE-TOP STAND AND REAR COVER REMOVAL
A Gently place LCD TV face down onto a soft cloth and remove 3 screws from Table-Top Stand.
B Remove screws from Rear Cover.
REF. NO.
PART NO.
DESCRIPTION
[ASSEMBLY INCLUDES]
REF. NO.
PART NO.
DESCRIPTION
[ASSEMBLY INCLUDES]
1
4-409-855-01
REAR COVER (32APOF)
[2]
(KDL-32BX355/32BX356 ONLY)
1
4-409-856-02
REAR COVER (40APOF)
[2]
(KDL-40BX455 ONLY)
1
4-409-857-02
REAR COVER (46APOF)
[2]
(KDL-46BX455 ONLY)
2
4-300-793-01
BRACKET, VESA (32APOF)
(KDL-32BX355/32BX356 ONLY)
2
4-300-794-01
BRACKET, VESA (40APOF)
(KDL-40BX455 ONLY)
2
4-300-795-01
BRACKET, VESA (46APOF)
(KDL-46BX455 ONLY)
3
X-2583-462-2
STAND ASSEMBLY (32APOF)
(KDL-32BX355/32BX356 ONLY)
3
X-2583-463-1
STAND ASSEMBLY (40APOF)
(KDL-40BX455 ONLY)
3
X-2583-464-1
STAND ASSEMBLY (46APOF)
(KDL-46BX455 ONLY)
4
2-580-608-11
SCREW, +PSW M5X16
(SCREWS TO ATTACH TABLE-TOP STAND TO LCD TV)
For product protection and safety reasons, Sony strongly recommends that
you use the screws provided with the TV.
CAUTION: These screws cannot be used to secure the TV to the
Wall Mount Brackets
3
4
2
1
CAUTION: Do not damage the Power Board Connector and AC Power Cord when removing the Rear Cover.
C Carefully lift Rear Cover from the bottom and push
forward to release top hooks.
D Hold Power Supply Cord while lifting up Rear Cover,
then pass Power Supply Cord through Rear Cover
opening.
Do not pull the AC Power Cord or damage
the connector on the Power Board.
KDL-32BX355/32BX356/40BX455/46BX455
16
SECTION 4 - DISASSEMBLY/PART NUMBER INFORMATION
HANDLING THE LVDS FFC CONNECTOR
Several models use a LVDS FFC Connector from the
Main Board to the TCON Board. Currently there are
three different types of connectors that are used.
CAUTION:
Refer to the illustration below when disconnecting or
connecting the LVDS FFC Connector. Regardless of
the connector type, DO NOT remove the LVDS FFC
Connector by the reinforcement tab only.
Correct
Incorrect
CAUTION:
The LVDS FFC Connector can be inserted into the
Main Board upside down. If it is inserted upside down,
the pins on the LVDS FFC Connector will short-circuit
and damage the board.
Inserted Correctly
Inserted Incorrectly
DISCONNECTING THE LVDS FFC CONNECTOR
CAUTION:
Regardless of the connector type, DO NOT remove the LVDS FFC
Connector by the reinforcement tab only.
CONNECTOR TYPE 1
1. Slightly tilt the Main Board connector release away from the LVDS FFC
Connector.
2. Gently wiggle the LVDS FFC Connector to detach it from the Main Board.
䐠
Main Board
Reinforcement
Tab
Tilt away from LVDS
CONNECTOR TYPE 2
1. Gently press down on the release tab of the Main Board connector.
2. Correctly holding onto the LVDS FFC Connector, pull out the connector
while continuing to hold down the release tab of the Main Board connector.
䐠
Press down
Main Board
Reinforcement
Tab
CONNECTOR TYPE 3
1. Gently press down on the 2 release tabs of the Main Board connector.
2. Correctly holding onto the LVDS FFC Connector, pull out the connector
while continuing to hold down the release tabs of the Main Board connector.
䐠
Reinforcement
Tab
Press down
Main Board
CONNECTING THE LVDS FFC CONNECTOR
CAUTION:
DO NOT insert the LVDS FFC Connector into the Main Board upside
down.
CONNECTOR TYPE 1
1. While holding onto the LVDS FFC Connector, gently tilt the Main Board
connector release towards the Main Board then slide the LVDS FFC
Connector straight in.
Main Board
Reinforcement
Tab
Tilt away from LVDS
CONNECTOR TYPE 2
1. Gently press down on the release tab of the Main Board connector.
2. Holding onto the entire LVDS FFC Connector, insert the LVDS FFC
Connector into the Main Board connector.
Main Board
Reinforcement
Tab
Press down
䐠
CONNECTOR TYPE 3
1. Gently press down on the 2 release tabs of the Main Board connector.
2. Holding onto the entire LVDS FFC Connector, insert the LVDS FFC
Connector into the Main Board connector.
Reinforcement
Tab
Press down
Main Board
䐠
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