Sony KDL-32EX720 / KDL-32EX723 / KDL-40EX720 / KDL-40EX723 / KDL-46EX720 / KDL-46EX723 / KDL-55EX720 / KDL-55EX723 / KDL-60EX720 Service Manual ▷ View online
Safety Notes
KDL- 32, 40, 46, 55, 60 EX720, 32, 40, 46, 55 EX723
RM-GD019
1-4. How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw
on most AC outlet boxes is also at earth ground.
If the retaining screw is to be used as your earth ground, verify that it is at ground
by measuring the resistance between it and a cold-water pipe with an ohmmeter.
A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw
on most AC outlet boxes is also at earth ground.
If the retaining screw is to be used as your earth ground, verify that it is at ground
by measuring the resistance between it and a cold-water pipe with an ohmmeter.
c) Be sure to follow these guidelines to protect your property and avoid causing
serious injury.
• Carry the TV with an adequate number of people; larger size TVs require
two or more people.
The reading should be zero ohms.
If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble- light (not
a neon lamp) between the hot side of the receptacle and the retaining screw. Try
both slots, if necessary, to locate the hot side on the line; the lamp should light at
normal brilliance if the screw is at ground potential (see Figure B).
If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble- light (not
a neon lamp) between the hot side of the receptacle and the retaining screw. Try
both slots, if necessary, to locate the hot side on the line; the lamp should light at
normal brilliance if the screw is at ground potential (see Figure B).
two or more people.
• Correct hand placement while carrying the TV is very important for safety
and to avoid damages.
d) Components identified by shading and ! mark on the schematic diagrams,
exploded views, and in the parts list are critical for safe operation. Replace
these components with Sony parts whose part numbers appear as shown in
these components with Sony parts whose part numbers appear as shown in
these components with Sony parts whose part numbers appear as shown in
this manual or in supplements published by Sony. Circuit adjustments that
are critical for safe operation are identified in this manual. Follow these
procedures whenever critical components are replaced or improper
operation is suspected.
this manual or in supplements published by Sony. Circuit adjustments that
are critical for safe operation are identified in this manual. Follow these
procedures whenever critical components are replaced or improper
operation is suspected.
1-6. Lead Free Information
The circuit boards used in these models have been processed using Lead Free
Solder. The boards are identified by the LF logo located close to the board
designation.
The circuit boards used in these models have been processed using Lead Free
Solder. The boards are identified by the LF logo located close to the board
designation.
Figure 3 Checking for earth ground
designation.
Figure 3. Checking for earth ground.
1-5. Warnings and Caution
a) These servicing instructions are for use by qualified service personnel only.
a) These servicing instructions are for use by qualified service personnel only.
T
d
th
i k f l
t i
h
k d
t
f
i i
th
th
Figure 2: LF
Logo
Logo
To reduce the risk of electric shock, do not perform any servicing other than
that contained in the operating instructions unless you are qualified to do so.
that contained in the operating instructions unless you are qualified to do so.
b) An isolation transformer should be used during any service to avoid possible
shock hazard, because of live chassis. The chassis of this receiver is directly
connected to the ac power line.
connected to the ac power line.
Figure 3: LF logo on circuit board
4
Safety Notes
KDL- 32, 40, 46, 55, 60 EX720, 32, 40, 46, 55 EX723
RM-GD019
The servicing of these boards requires special precautions. It is strongly
recommended to use Lead Free Solder material in order to guarantee optimal
quality of new solder joints. Lead Free Solder is available under the following
part numbers:-
recommended to use Lead Free Solder material in order to guarantee optimal
quality of new solder joints. Lead Free Solder is available under the following
part numbers:-
FFC can reverse insertion to connector of B board.
If reverse insertion FFC, all pins short-circuit, and board is broken.
p
Part N umb er
D iamet er
R emarks
7- 6 4 0 - 0 0 5- 19
0 .3 mm
0 .2 5Kg
7- 6 4 0 - 0 0 5- 2 0
0 .4 mm
0 .50 Kg
7- 6 4 0 - 0 0 5- 2 1
0 .5mm
0 .50 Kg
7- 6 4 0 - 0 0 5- 2 2
0 .6 mm
0 .2 5Kg
7- 6 4 0 - 0 0 5- 2 3
0 .8 mm
1.0 0 Kg
7- 6 4 0 - 0 0 5- 2 4
1.0 mm
1.0 0 Kg
7- 6 4 0 - 0 0 5- 2 5
1.2 mm
1.0 0 Kg
7- 6 4 0 - 0 0 5- 2 6
1.6 mm
1.0 0 Kg
< Insertion>
Due to high melting point of Lead Free Solder, the soldering iron tip
temperature needs to be set to 370 degrees centigrade. This requires
soldering equipment capable of accurate temperature control coupled
with a good heat recovery characteristics.
temperature needs to be set to 370 degrees centigrade. This requires
soldering equipment capable of accurate temperature control coupled
with a good heat recovery characteristics.
with a good heat recovery characteristics.
For more information on the use of Lead Free Solder,
please refer to
For more information on the use of Lead Free Solder,
please refer to
http://www.sony-training.com
1-7. Handling the FLEXIBLE FLAT CABLE (FFC)
<P ll
t>
When you insert / pull out FFC, please grasp a reinforcement board
and main body of FFC.
<Pull out>
5
1-8. How to release COVER AC (Service and repair information)
Safety Notes
KDL- 32, 40, 46, 55, 60 EX720, 32, 40, 46, 55 EX723
RM-GD019
1.
Remove screw for Rear Cover and “COVER AC”.
3. Release AC cable connector.
( Refer Section 6 for screw information).
2. Open Rear Cover with “COVER AC” and AC cable are attached.
4. Release hook of “COVER AC” and remove it.
Make sure to hold cable not to give any tension to connector
and scratch damage for cable.
Note:
Take care not to cut your hand when release hook, especially metal Rear Cover.
Confirm if the hook broken before reuse COVER AC.
In case hook broken is occurred, replace with new one.
6
Safety Notes
1-9-1. How to Release Rear Cover 32 inch (Service and Repair Information)
1-9. How to Release/ Assemble Rear Cover 32 inch (Service and Repair Information)
1-9-2. How to assemble Rear Cover 32 inch (Service and Repair Information)
KDL- 32, 40, 46, 55, 60 EX720, 32, 40, 46, 55 EX723
RM-GD019
1. Remove all screws on Rear Cover.
2. Open Rear Cover in order as below.
6
6
1. Put Rear Cover ‘from top side’
1
2
3
4
5
2. Push and confirm locks in order as below
1
1
1
4
1
2
4
5
5
3. Lift up rear cover as below.
3
5
6
6
For order no. 4
Please lift rear cover up in
minimum height.
minimum height.
Insert ‘plastic’ item (less than
dia15mm):
dia15mm):
Lift rear cover up with care.
Damages on Rear Cover
minimum height.
)
a.
Do not use metal one
b.
Take care not to scratch
Do not open rear cover by force with 1~5 hooks are locked.
Damages on Rear Cover
Damages on Rear Cover
(White Mark) will occur if
this operation is not being
followed.
(White Mark) will occur if
this operation is not being
followed.
Do not push rear cover at below area.
For order no. 5 & 6
(White Mark) will occur if
this operation is not being
followed.
this operation is not being
followed.
7
Rear Cover photo may have slight difference with actual set.
3. Confirm all locks are fitted.
Click on the first or last page to see other KDL-32EX720 / KDL-32EX723 / KDL-40EX720 / KDL-40EX723 / KDL-46EX720 / KDL-46EX723 / KDL-55EX720 / KDL-55EX723 / KDL-60EX720 service manuals if exist.