KDL-32BX330, KDL-32BX331 - Sony TV Service Manual (repair manual)

MODEL NAME 

                       REMOTE COMMANDER                                 DESTINATION 

LEVEL 

1/24/2012 

 

Original Manual Release Date

2/9/2012   

 

Updated Safety Check-Out, Printed Circuit Boards and Schematic Diagrams Information

 

 

 

and Exploded View. Replaced pages 6, 9 and 29.

3/29/2012 

 

Reissue entire manual. 

 

 

 

Removed US destination for KDL-32BX331 model.

 

 

 

Added information for new S/N range for KDL-32BX330.

 

 

 

Added information for new KDL-32BX330 model for MX (white). 

4/27/2012 

 

Corrected Back Light Cover PN on Exploded View. Replaced page 30.

Cautions and Warnings ................................................................. 3
Safety-Related Warning ................................................................. 4
Safety Check-Out .......................................................................... 6
Features and Specifications .......................................................... 8

1-1.  Circuit Boards Location ......................................................... 9
1-2.  Printed Circuit Boards and Schematic Diagrams Information 9
1-3.  Schematics and Supporting Information ............................. 10

A Board Schematic Diagram (1 of 14) ................................. 10
A Board Schematic Diagram (2 of 14) ................................. 11
A Board Schematic Diagram (3 of 14) ................................. 12
A Board Schematic Diagram (4 of 14) ................................. 13
A Board Schematic Diagram (5 of 14) ................................. 14
A Board Schematic Diagram (6 of 14) ................................. 15
A Board Schematic Diagram (7 of 14) ................................. 16
A Board Schematic Diagram (8 of 14) ................................. 17
A Board Schematic Diagram (9 of 14) ................................. 18
A Board Schematic Diagram (10 of 14) ............................... 19
A Board Schematic Diagram (11 of 14) ............................... 20
A Board Schematic Diagram (12 of 14) ............................... 21
A Board Schematic Diagram (13 of 14) ............................... 22
A Board Schematic Diagram (14 of 14) ............................... 23
G1 (Power Supply) Board Schematic Diagram (1 of 2) ...... 25
G1 (Power Supply) Board Schematic Diagram (2 of 2) ...... 26
H Board Schematic Diagram ............................................... 28

2-1.  LCD Panel Module and Rear Cover .................................... 29

2-1-1.  Cleaning The LCD Module ...................................... 29

2-2.  LCD Panel Module Exploded View ..................................... 30
2-3. Connectors .......................................................................... 31
2-4.  Accessories and Packing .................................................... 31
2-5. Miscellaneous ..................................................................... 31
2-6.  Optional Accessories ........................................................... 31
2-7.  Remote Commander ........................................................... 31

3-1.  Protection Shutdown ........................................................... 32

3-1-1.  Standby LED Flash Count ....................................... 32
3-1-2.  Diagnostic Table ...................................................... 32
3-1-3.  Accessing the Self Diagnosis History ...................... 32

3-2.  Accessing Service Mode ..................................................... 33

3-2-1.  Accessing the Self Diagnosis History ...................... 33

3-3.  Replacing the Main Board ................................................... 33

3-3-1.  Updating the Software ............................................. 33
3-3-2.  Selecting the Model Name ...................................... 34
3-3-3.  Adding the Serial Number and 

Clearing the Self Diagnosis History ........................ 35

3-4.  Replacing the LCD Panel Module ....................................... 35

3-4-1.  Clearing the Self Diagnosis History ......................... 35

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.

• 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.

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.

• Débranchez tous les câbles avant de transporter le téléviseur.

• Transportez le téléviseur avec le nombre adéquat de personnes; téléviseur de grande taille nécessitent deux 

personnes ou plus.

• Lors du transport du téléviseur, le bon emplacement des mains est très important pour votre sécurité, ainsi que pour 

éviter de causer des dommages.

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 electrical parts list. It is essential that these critical parts be 

replaced only with the part number specified in the electrical 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.

To avoid damaging the LCD panel: 
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. 
 

(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.