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KDL-40HX750/46HX750/46HX751/55HX750/55HX751 ii

Resolving an 8 Blink Error ...........................................................................35

Verifying there is an 8x error ...................................................................36
Resetting the TV to Factory Condition ....................................................36
Updating the Software ............................................................................36
Replacing the Main Board ......................................................................37

Completing Service Requirements When Replacing the LCD Panel  .........37

Updating the Software ............................................................................37
Confirming the Model ID and Product ID ................................................38
Resetting the Panel Operation Time .......................................................39
Clearing the Self Check Diagnosis History .............................................40

Optional Adjustments ..................................................................................41

Enabling VCOM to Adjust the Picture .....................................................41
Setting White Balance Adjustments ........................................................42

Resetting the TV to Factory Condition .........................................................42

Resetting the TV to Factory Condition Using Service Mode ...................43

KDL-40HX750/46HX750/46HX751/55HX750/55HX751 iii

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 qualified to do so.

An isolation transformer should be used during any service to avoid possible

shock hazard, in case of live chassis.

There are critical components used in LCD color TVs that are important for

safety. These components are identified with shading and ! mark on the

schematic diagrams and the parts list. It is essential that these critical parts

be replaced only with the part number specified in the parts list to prevent

electric shock, fire, 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 warranty.

For  safety  reasons,  component  level  repair  of  the  Power  Supply  Boards

and/or the Inverter Boards is prohibited.

Ces instructions de service sont à l’usage du personnel de service qualifié

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

qualifié faire ainsi.

Afin d’eviter tout risque d’electrocution provenant d’un chássis sous tension,

un transformateur d’isolement doit etre utilisé lors de tout dépannage.

Les  composants  identifies  par  une  trame  et  par  une  marque

  !  sur les 

schemas de principe, les vues explosees et les listes de pieces sont d’une

importance critique pour la securite du fonctionnement. Ne les remplacer

que par des composants Sony dont le numero de piece est indique dans le

present manuel ou dans des supplements publies par Sony. Les reglages

de circuit dont l’importance est critique pour la securite du fonctionnement

sont  identifies  dans  le  present  manuel.  Suivre  ces  procedures  lors  de

chaque  remplacement  de  composants  critiques,  ou  lorsqu’un  mauvais

fonctionnement suspecte.

Pour  des  raisons  de  sécurité,  Interdire  de  réparer  ou  remplacer  les

composantes dans les blocs d’alimentation et/ou sur les modules d’inverseur. 

KDL-40HX750/46HX750/46HX751/55HX750/55HX751 iv

 

Disconnect all cables when carrying the TV.

 

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.

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 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).

10.  During the repair,

DO NOT leave the Power On for more than

1 hour while the TV is face down on a cloth

.

KDL-40HX750/46HX750/46HX751/55HX750/55HX751 v

CAUTION: When cleaning the TV, be sure to unplug the power cord to avoid any chance of electric shock.

 

;

Stubborn stains may be removed with a cloth slightly moistened with a solution of mild soap and warm water.

 

;

If using a chemically pretreated cloth, please follow the instruction provided on the package.

 

;

Never use strong solvents such as a thinner, alcohol or benzine for cleaning.

 

;

Periodic vacuuming of the ventilation openings is recommended to ensure proper ventilation.

 

;

Do Not

use paper towels, any type of abrasive pad, rags, rubber or vinyl materials to clean the screen. Using these materials could easily scratch the

screen which may result in permanent damage.

 

;

Do Not

use any cleaning product containing alkaline/acid cleaner, scouring powder, or volatile solvent, such as alcohol, ammonia, benzine, thinner or

insecticide. Using any of these harsh cleaners may result in permanent damage to the screen.

 

;

Do Not

spray water or detergent directly onto the TV screen. If liquid drips into the bottom of the screen it may cause a failure.