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KDL-22EX355/32EX355/40EX455 ii

Completing Service Requirements When Replacing the LCD Panel ..........33

Verifying the Panel ID Code ....................................................................34
Resetting Panel Operation Time .............................................................35

KDL-22EX355/32EX355/40EX455 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. 

KDL-22EX355/32EX355/40EX455 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.

ALL MODELS EXCEPT

22” MODELS

ALL 22” MODELS

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-22EX355/32EX355/40EX455 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.