Sony KDL-46XBR10 / KDL-52XBR10 Service Manual ▷ View online
KDL-46/52XBR10 (UC) 3
CAUTION
These servicing instructions are for use by qualified service
personnel only.
To reduce the risk of electric shock, do not perform any servicing
other than that contained in the operating instructions unless you
are qualifi ed to do so.
personnel only.
To reduce the risk of electric shock, do not perform any servicing
other than that contained in the operating instructions unless you
are qualifi ed to do so.
WARNING!!
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.
avoid possible shock hazard, because of live chassis.
The chassis of this receiver is directly connected to the ac power
line.
CARRYING THE TV
Be sure to consider the following while carrying the TV:
• Disconnect all cables when carrying the TV.
• Carry the TV with the adequate number of people; larger
• Carry the TV with the adequate number of people; larger
size TVs require two or more people.
• Correct hand placement while carrying the TV is very
important for safety and to avoid damage.
SETTING U P THE TV
Be sure to consider the following while setting up the TV:
• Ensure your TV has adequate ventilation.
• For best picture quality, do not expose the screen to direct
• For best picture quality, do not expose the screen to direct
illumination or sunlight.
• Avoid installing the TV in a room with refl ective wall and
fl oor materials.
• Avoid moving the TV from a cold area to a warm area.
Sudden room temperature changes may cause moisture
condensation. This may cause the TV to show poor picture
and/or poor color. Should this occur, allow moisture to
evaporate completely before powering the TV on.
condensation. This may cause the TV to show poor picture
and/or poor color. Should this occur, allow moisture to
evaporate completely before powering the TV on.
SAFETY-RELATED COMPONENT WARNING!!
Components identifi ed 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 this manual or in supplements published by
Sony. Circuit adjustments that are critical for safe operation are identifi ed
in this manual. Follow these procedures whenever critical components
are replaced or improper operation is suspected.
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 this manual or in supplements published by
Sony. Circuit adjustments that are critical for safe operation are identifi ed
in this manual. Follow these procedures whenever critical components
are replaced or improper operation is suspected.
Replace all components with Sony parts whose part numbers
appear as shown in this manual or in supplements
published by Sony.
appear as shown in this manual or in supplements
published by Sony.
WARNINGS AND CAUTIONS - ENGLISH
KDL-46/52XBR10 (UC) 4
ATTENTION!!
Ces instructions de service sont à l’usage du personnel de service
qualifi é seulement. Pour prévenir le risque de choc électrique,
ne pas faire l’entretien autre que celui contenu dans le Mode d’
emploi à moins que vous soyez qualifi é faire ainsi.
qualifi é seulement. Pour prévenir le risque de choc électrique,
ne pas faire l’entretien autre que celui contenu dans le Mode d’
emploi à moins que vous soyez qualifi é faire ainsi.
WARNING!!
Afi n d’eviter tout risque d’electrocution provenant d’un chássis
sous tension, un transformateur d’isolement doit etre utilisé lors
de tout dépannage. Le chássis de ce récepteur est directement
raccordé à l’alimentation du secteur.
sous tension, un transformateur d’isolement doit etre utilisé lors
de tout dépannage. Le chássis de ce récepteur est directement
raccordé à l’alimentation du secteur.
TRANSPORTER LE TÉLÉVISEUR
Tenez compte de ce qui suit pendant l’installation du téléviseur :
• Débranchez tous les câbles avant de transporter le téléviseur.
• Transportez le téléviseur avec le nombre de personnes
• Transportez le téléviseur avec le nombre de personnes
approprié ; un téléviseur de grande taille doit être transporté
par au moins deux personnes.
par au moins deux personnes.
• Lors du transport du téléviseur, l’emplacement des mains est
très important pour votre sécurité, ainsi que pour éviter de
causer des dommages.
causer des dommages.
INSTALLATION DU MONITEUR
Tenez compte de ce qui suit pendant l’installation du moniteur :
• Assurez-vous que le moniteur est entouré d’une ventilation
adéquate.
• Pour obtenir une qualité d’image optimale, n’exposez pas l’
écran à la lumière directe d’une lampe ou du soleil.
• Évitez d’installer le moniteur dans une pièce dont le sol et
les murs sont d’un matériau réfl échissant.
• Évitez de déplacer le moniteur d’un endroit froid à un
endroit chaud. Un changement soudain de température
peut provoquer de la condensation. Ce phénomène peut
affecter la qualité de l’image et/ou des couleurs affi chées
par le moniteur. Si cela se produit, laissez la condensation
s’évaporer complètement avant de mettre le moniteur sous
tension.
peut provoquer de la condensation. Ce phénomène peut
affecter la qualité de l’image et/ou des couleurs affi chées
par le moniteur. Si cela se produit, laissez la condensation
s’évaporer complètement avant de mettre le moniteur sous
tension.
ATTENTION AUX COMPOSANTS RELATIFS
A LA SECURITE!!
Components identifi ed 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 this manual or in supplements published by
Sony. Circuit adjustments that are critical for safe operation are identifi ed
in this manual. Follow these procedures whenever critical components
are replaced or improper operation is suspected.
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 this manual or in supplements published by
Sony. Circuit adjustments that are critical for safe operation are identifi ed
in this manual. Follow these procedures whenever critical components
are replaced or improper operation is suspected.
WARNINGS AND CAUTIONS - FRENCH
KDL-46/52XBR10 (UC) 5
It is essential that all critical parts be replaced only with the part number specifi ed in the electrical parts list to prevent electric shock, fi re,
or other hazard.
or other hazard.
NOTE: Do not modify the original design without obtaining written permission from the manufacturer or you will void the original
parts and labor guarantee.
USE CAUTION WHEN HANDLING THE LCD PANEL
When repairing the LCD panel, be sure you are grounded by using a wrist band.
When repairing the LCD panel on the wall, the LCD panel must be secured using the 4 mounting holes on the rear cover.
1) Do not press on the panel or frame edge to avoid the risk of electric shock.
2) Do not scratch or press on the panel with any sharp objects.
3) Do not leave the module in high temperatures or in areas of high humidity for an extended period of time.
4) Do not expose the LCD panel to direct sunlight.
5) Avoid contact with water. It may cause a short circuit within the module.
6) Disconnect the AC power when replacing the backlight (CCFL) or inverter circuit.
2) Do not scratch or press on the panel with any sharp objects.
3) Do not leave the module in high temperatures or in areas of high humidity for an extended period of time.
4) Do not expose the LCD panel to direct sunlight.
5) Avoid contact with water. It may cause a short circuit within the module.
6) Disconnect the AC power when replacing the backlight (CCFL) or inverter circuit.
(High voltage occurs at the inverter circuit at 650Vrms.)
7) Always clean the LCD panel with a soft cloth material.
8) Use care when handling the wires or connectors of the inverter circuit. Damaging the wires may cause a short.
9) Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).
8) Use care when handling the wires or connectors of the inverter circuit. Damaging the wires may cause a short.
9) Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).
SAFETY-RELATED COMPONENT WARNING
KDL-46/52XBR10 (UC) 6
SAFETY CHECK-OUT
After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
following safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly
soldered connections. Check the entire board surface for
solder splashes and bridges.
solder splashes and bridges.
2. Check the interboard wiring to ensure that no wires are
“pinched” or touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps,
and mounting hardware have been replaced. Be absolutely
certain that you have replaced all the insulators.
certain that you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
them out to the customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious
signs of deterioration. Point them out to the customer and
recommend their replacement.
recommend their replacement.
6. Check the line cords for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.
7. Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
Check leakage as described below.
Leakage Test
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturers’ instructions to use
these instructions.
these instructions.
2. A battery-operated AC milliampmeter. The Data Precision
245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means
of a VOM or battery-operated AC voltmeter. The “limit”
indication is 0.75 V, so analog meters must have an accurate
low voltage scale.
indication is 0.75 V, so analog meters must have an accurate
low voltage scale.
The Simpson’s 250 and Sanwa SH-63TRD are examples of
passive VOMs that are suitable. Nearly all battery-operated
digital multimeters that have a 2 VAC range are suitable (see
Figure A).
passive VOMs that are suitable. Nearly all battery-operated
digital multimeters that have a 2 VAC range are suitable (see
Figure A).
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. The reading should be zero ohms.
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. 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).
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).
To Exposed Metal
Parts on Set
Parts on Set
0.15 µF
Earth Ground
AC
Voltmeter
(0.75V)
Voltmeter
(0.75V)
Trouble Light
AC Outlet Box
Ohmmeter
Cold-water Pipe
FigureA. Using an AC voltmeter to check AC leakage.
Figure B. Checking for earth ground.