Sony KDL-40NX725 Service Manual ▷ View online
KDL-40NX725 36
SECTION 5 - FLOW CHARTS AND DIAGRAMS
NO PICTURE
No Video
Backlights
turned on?
Unplug LVDS
connector with
unit off. Turn unit
back on
Test patterns
display on
screen?
Yes
No
TCON
(LCD Panel)
Sony logo
appears
momentarily?
No
BATL Board
No
TCON
(LCD Panel)
Yes
Yes
BATL Board
FIGURE 5-4. NO VIDEO FLOWCHART
KDL-40NX725 37
SECTION 5 - FLOW CHARTS AND DIAGRAMS
Video Distortion
Is distortion
across entire
screen?
Any horizontal
lines?
No
No
Yes
Yes
Improper or
missing colors?
Yes
BATL Board
No
Vertical lines
or bars?
No
Yes
Lines move
when wide-mode
changed?
Yes
No
TCON
(LCD Panel)
BATL Board
LCD Panel
Any single or
isolated vertical
lines?
Yes
LCD Panel
More than 1
vertical band?
No
Yes
TCON
(LCD Panel)
FIGURE 5-5. VIDEO DISTORTION
KDL-40NX725
38
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 6 - DISASSEMBLY/PART NUMBER INFORMATION
TABLE-TOP STAND ASSEMBLY REMOVAL
A Remove 3 screws from Table-Top Stand Assembly
REF. NO.
PART NO.
DESCRIPTION
[ASSEMBLY INCLUDES]
REF. NO.
PART NO.
DESCRIPTION
[ASSEMBLY INCLUDES]
1
A-1811-822-A
STAND, HEAD(ML9)
2
4-259-180-02
NECK (ML9)
3
A-1811-834-A
STAND, BASE(ML1)
4
4-259-541-01
USER SCREW ST
(SCREWS TO ATTACH HEAD STAND AND BASE STAND TO NECK)
5
2-580-608-01
SCREW, +PSW M5X16
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
2-580-608-01
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
B Lift up TV set to detach from Table-Top Stand Assembly
C Gently place the LCD TV set face down onto a soft cloth
1
2
3
5
4
4
A
C
Soft Cloth
B
KDL-40NX725
39
SECTION 6 - DISASSEMBLY/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: Encryption Key Components in the back of this manual.
REF. NO.
PART NO.
DESCRIPTION
[ASSEMBLY INCLUDES]
REF. NO.
PART NO.
DESCRIPTION
[ASSEMBLY INCLUDES]
REAR COVER AND AC COVER REMOVAL
CAUTIONS:
Do not damage the Power Board Connector and Power Supply Cord when removing the Rear Cover.
Refer to
“Removing the Power Cord from the Rear Cover” on page A-2
for complete instructions.
The Rear Cover has sharp edges. Use caution when handling the Rear Cover to avoid injury. Refer
to
“Rear Cover Caution” on page A-1
for complete instructions.
NOTE: The Label (BAT-L Metal Side), Label (BAT-L Metal Bottom) and Sheet, Ant(C EL) are not
included with the Rear Cover and must be replaced when replacing the Rear Cover.
A Remove 8 screws from Rear Cover
B Remove 6 screws from Rear Cover
C Remove 1 screw from Side Bracket position
D Remove 1 screw from Terminal Area position
E Remove 2 screws from Rear Cover
F Remove 1 screw and release clips from AC Cover to detach from Rear Cover
(Refer to
“Removing the Power Cord from the Rear Cover” on page A-2
)
G Remove 4 screws from Rear Cover
H Gently peel-off Antenna Sheet to detach from Rear Cover
I Release 1 clip and lift up Antenna Cover to detach from Rear Cover
J Gently lift up Rear Cover form bottom side to detach from Center Cabinet
4-256-393-01
SCREW, +PSW M3X6 W12
2-580-639-01
SCREW, +BVTP 4X12 TYPE2 IT-3
4-257-907-01
JOINT, STAND
4-268-126-02
SCREW, ORNAMENTAL M6X12
4-258-272-01
SCREW, +PWH M3X8
7-685-646-79
SCREW, +BVTP 3X8 TYPE2 IT-3
51
4-268-423-22
REAR COVER (40 EL) A
52
4-259-168-01
COVER, AC(M)
53
4-268-431-01
SHEET, ANT(C EL)
ORDER THIS PART WHEN REPLACING THE REAR COVER
54
4-256-676-01
COVER ANT (L EL)
55
4-265-069-01
LABEL (BAT-L METAL BOTTOM)
ORDER THIS PART WHEN REPLACING THE REAR COVER
56
4-256-433-12
LABEL, (BAT-L METAL SIDE)
ORDER THIS PART WHEN REPLACING THE REAR COVER
A
B
C
D
E
F
G
J
H
I
51
52
53
54
55
56
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