XBR-46HX909, XBR-52HX909 (serv.man2) - Sony TV Service Manual (repair manual). Page 3

These servicing instructions are for use by qualifi ed 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.

• 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.

• Disconnect all cables when carrying the TV.

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.

!

 

Components identifi ed by shading and ! mark on the exploded views are critical for safe operation. 
Replace all components with Sony parts whose part numbers appear as shown in this manual or in supplements published by Sony. It is essential that 
all critical parts be replaced only with the part number specifi ed in this manual to prevent electric shock, fi re, or other hazard.
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. 

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 the following precautionary guidelines when replacing the Glass Assembly to avoid material degradation or screen coating degradation, and 
ensure that dust, dirt, or fi ngerprints are not left between the glass and the LCD panel.



 

Replace the Glass Assembly in a brightly lit and clean room.  



 

Place the replacement Glass Assembly on a dark cloth to make it easier to see dust and dirt particles. 



 

Wear anti static gloves to avoid leaving fi nger prints on the glass.



 

Use a dry, soft MicroFiber cloth, such as a lint free polishing cloth, to gently wipe the glass to remove any dust or dirt 
particles. 



 

If the glass needs additional cleaning, slightly moisten the cloth with a diluted mild soap or mild detergent solution, or use 
a compressed air duster (spray can type). 



 

After replacing the Glass Assembly, verify there are no dark spots or fi nger prints visible on the screen.



 

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

 se any cleaning product containing alkaline/acid cleaner, scouring powder, or volatile solvent, such as alcohol, 

ammonia, benzene, 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.