Sony KDL-22EX420 / KDL-26EX420 / KDL-32EX420 / KDL-32EX520 / KDL-32EX523 / KDL-40EX520 / KDL-40EX523 / KDL-46EX520 / KDL-46EX523 Service Manual ▷ View online
Safety Notes
KDL- 22, 26 EX420, 32,40,46 EX520
RM-GD020, CD013
KDL- 22 EX423, 26 EX423, 32 EX420, 32, 40, 46 EX523
RM-GD020
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.
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
3
).
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
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.
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
4
: LF
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.
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.
Figure
5
: LF logo on circuit board
4
Safety Notes
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:-
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.
For more information on the use of Lead Free Solder,
please refer to
http://www.sony-training.com
Part Number
Diameter
Remarks
7-640-005-19
0.3mm
0.25Kg
7-640-005-20
0.4mm
0.50Kg
7-640-005-21
0.5mm
0.50Kg
7-640-005-22
0.6mm
0.25Kg
7-640-005-23
0.8mm
1.00Kg
7-640-005-24
1.0mm
1.00Kg
7-640-005-25
1.2mm
1.00Kg
7-640-005-26
1.6mm
1.00Kg
5
KDL- 22, 26 EX420, 32,40,46 EX520
RM-GD020, CD013
KDL- 22 EX423, 26 EX423, 32 EX420, 32, 40, 46 EX523
RM-GD020
2. Peel off double sided tape
To peel off double sided tape between bezel assembly and panel, push bezel down
and pull panel up. Prohibited pushing panel from front side for prevention break panel.
(1)Hook off LED board to be easy peel off
(2)Put hand into between bezel and Panel from side,
pull panel up and push down bezel like picture.
Should pull up
metal area,
metal area,
should not cell area.
(3)Moving hand peeling by peeling to pull up and push
down near the tape.
Moving hands
step by step
step by step
1-7-1. Notice when LCD panel peel off from bezel assembly
Peel off double sided tapes between bezel assembly and LCD panel when
Peel off double sided tapes between bezel assembly and LCD panel when
exchanging LCD panel, etc, allow below instruction.
1. Put off “Bracket, Panel”
Put off “Bracket, Panel” with pushing bezel hook. The position shows on
following pages.
Pushing hook
Put off
1-7. Information regarding Bezel and Panel
Safety Notes
6
KDL- 22, 26 EX420, 32,40,46 EX520
RM-GD020, CD013
KDL- 22 EX423, 26 EX423, 32 EX420, 32, 40, 46 EX523
RM-GD020
1-7-2. Exchange double sided tapes
Because double sided tape’s strength weaken when tapes once peeled off, peel off
all tapes from bezel assembly, and stick new ones.
1. Peel off double sided tapes from bezel.
(Possibly remain on panel side)
(Possibly remain on panel side)
2. Stick double sided tapes
Double sided tapes
32～46”
Name: DOUBLE SIDED TAPE (PANEL)
P/N: 4-272-200-01
Vendor: Chiyoda integre
55”, 60”
Name: DOUBLE SIDED TAPE (PANEL 10)
P/N: 4-281-014-01
Vendor: Chiyoda integre
Stick double sided tapes as shown in following
pages. Peel off separate papers before panel
puts on.
Safety Notes
7
KDL- 22, 26 EX420, 32,40,46 EX520
RM-GD020, CD013
KDL- 22 EX423, 26 EX423, 32 EX420, 32, 40, 46 EX523
RM-GD020
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