Sony KDL-32EX421 / KDL-32EX520 / KDL-32EX521 / KDL-32EX523 / KDL-40EX520 / KDL-40EX521 / KDL-40EX523 / KDL-46EX520 / KDL-46EX521 / KDL-46EX523 Service Manual ▷ View online
KDL-32EX421/32EX423/32EX520/32EX521/32EX523/40EX520/40EX521/40EX523/46EX520/46EX521/46EX523 43
SECTION 5 - FLOW CHARTS AND DIAGRAMS
Is Audio
Present?
Check
HP Audio Output
No
Missing or Distorted Audio
Is Audio
Missing or Distorted
on
All Inputs?
No
Yes
Yes
Check
Speaker Resistance at
(across Speakers)
& Connections
8 ohms
&
Connections
OK?
No
Check
AU12V from Power Supply
Is
12V
Present?
Yes
Yes
Replace
Speaker(s)
No
No
Yes
Is
External Device
& connection
OK?
Repair External
Device
Check
External Device
and Connections
Swap Devices and
connections
Replace
Main Board
Replace
Power Supply
Board
Replace
Main Board
Replace
Main Board
FIGURE 5-6. NO AUDIO FLOWCHART
KDL-32EX421/32EX423/32EX520/32EX521/32EX523/40EX520/40EX521/40EX523/46EX520/46EX521/46EX523 44
SECTION 5 - FLOW CHARTS AND DIAGRAMS
SET TURNS ON AND OFF
Are
all voltage
Present?
No
Is
Backlight ON
Before Shut
Down?
Yes
No
Yes
Replace
LCD Panel
Assembly
Yes
No
Does “SONY”
logo display
Is Issue
Resolved?
Issue
Resolved
Replace
LCD Panel
Assembly
Check
+109V & -70V
LED Supplies
*Before Shutdown
Replace
Main Board
Constant ON/OFF
Power Cycling
40" & 46" Models
Replace
Power Supply
Board
Green LED
Constant ON
(No Picture)
32" Model
OR
FIGURE 5-7. CONSTANT ON/OFF FLOWCHART
KDL-32EX421/32EX423/32EX520/32EX521/32EX523/40EX520/40EX521/40EX523/46EX520/46EX521/46EX523 45
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: Les composants identifies per un trame et
une marque
!
sont critiques pour la securite.
Ne les remplacer que par une piece portant le
numero specifie.
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
NOTE: KDL-46EX520 shown below
A Remove 3 screws from Table-Top Stand Assembly
REF. NO.
PART NO.
DESCRIPTION
[ASSEMBLY INCLUDES]
REF. NO.
PART NO.
DESCRIPTION
[ASSEMBLY INCLUDES]
(Check the
Sony Electronics Service Information
website for any additional service related issues for this model.)
1
4-268-538-01
STAND, HEAD P(M)
(KDL-32EX421/32EX521 FOR LA1 ONLY)
1
4-267-490-01
STAND, HEAD(M9)
(KDL-32EX423/32EX520/32EX523 ONLY)
(KDL-32EX521 FOR U2/CA2 ONLY)
1
4-268-539-01
STAND, HEAD P(ML)
(KDL-40EX521 FOR LA1 ONLY)
1
4-267-497-01
STAND, HEAD(ML9)
(KDL-40EX520/40EX523/46EX520/46EX521/46EX523 ONLY)
(KDL-40EX521 FOR U2/CA2 ONLY)
2
4-268-542-01
STAND, NECKP(M)
(KDL-32EX421/32EX521 FOR LA1 ONLY)
2
4-259-177-01 NECK(M9)
(KDL-32EX423/32EX520/32EX523 ONLY)
(KDL-32EX521 FOR U2/CA2 ONLY)
2
4-268-543-01
STAND, NECK P(ML)
(KDL-40EX521 FOR LA1 ONLY)
2
4-259-180-01 NECK(ML9)
(KDL-40EX520/40EX523 ONLY)
(KDL-40EX521 FOR U2/CA2 ONLY)
2
4-259-183-01 NECK(L9)
(KDL-46EX520/46EX521/46EX523 ONLY)
3
4-268-548-01
STAND, PIPE (M)
(KDL-32EX421/32EX521 FOR LA1 ONLY)
3
4-267-555-01
STAND, BASE(M2)
(KDL-32EX423/32EX520/32EX523 ONLY)
(KDL-32EX521 FOR U2/CA2 ONLY)
3
4-268-549-01
STAND, PIPE (ML)
(KDL-40EX521 FOR LA1 ONLY)
3
4-267-560-01
STAND, BASE(ML2)
(KDL-40EX520/40EX523 ONLY)
(KDL-40EX521 FOR U2/CA2 ONLY)
3
4-267-564-01
STAND, BASE(L2)
(KDL-46EX520/46EX521/46EX523 ONLY)
4
2-580-608-01
SCREW, +PSW M5X16
(SCREWS TO ATTACH TABLE-TOP STAND TO LCD TV)
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
A
C
Soft Cloth
B
1
2
3
4
1
2
3
4
ALL MODELS EXCEPT
KDL-32EX421/32EX521/40EX521 FOR LA1 ONLY
KDL-32EX421/32EX521/40EX521 FOR LA1 ONLY
KDL-32EX421/32EX423/32EX520/32EX521/32EX523/40EX520/40EX521/40EX523/46EX520/46EX521/46EX523 46
SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION
NOTE: Les composants identifies per un trame et
une marque
!
sont critiques pour la securite.
Ne les remplacer que par une piece portant le
numero specifie.
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
CAUTION:
Do not damage the GE2/GE3 (Power) Board Connector and Power Supply Cord when
removing the Rear Cover. Refer to
“Appendix A - Removing the Rear Cover” on page A-1
for
complete instructions.
A Remove screws from Rear Cover
5 from KDL-32EX421/32EX423/32EX520/32EX521/32EX523 Only
4 from KDL-40EX520/40EX521/40EX523 Only
6 from KDL-46EX520/46EX521/46EX523 Only
B Remove 1 screw from Terminal Area position
C Remove 2 screws from Rear Cover
D Remove 1 screw and release clips from AC Cover to detach from Rear Cover
(Refer to
“Appendix A - Removing the Rear Cover” on page A-1
.)
E Remove 2 screws from Rear Cover
F Remove screws from Rear Cover
7 from KDL-32EX421/32EX423/32EX520/32EX521/32EX523/40EX520/40EX521/40EX523 Only
5 from KDL-46EX520/46EX521/46EX523 Only
G Gently lift up Rear Cover form bottom side to detach from Bezel
(Check the
Sony Electronics Service Information
website for any additional service related issues for this model.)
4-256-393-01
SCREW, +PSW M3X6 W12
7-685-648-79
SCREW +BVTP 3X12 TYPE2 IT-3
2-580-639-01
SCREW, +BVTP 4X12 TYPE2 IT-3
4-257-907-01
JOINT, STAND
4-268-126-02
SCREW, ORNAMENTAL M6X12
51
4-275-430-31
REAR COVER(32)
(KDL-32EX421 ONLY)
51
4-275-430-01
REAR COVER(32)
(KDL-32EX423/32EX520/32EX521/32EX523 ONLY)
51
4-275-420-01
REAR COVER(40)
(KDL-40EX520/40EX521/40EX523 ONLY)
51
4-275-413-01
REAR COVER(46)
(KDL-46EX520/46EX521/46EX523 ONLY)
52
4-266-269-01
COVER, AC(M)
51
52
A
D
C
E
F
G
B
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