Sony BRAVIA KDL-32BX320 Installation guide

SERVICE/TRAINING MANUAL
LCD Digital Color TV
AZ2-UK Chassis
Segment: P-2F
9-883-851-02
Version Date Subject
1.0 1/17/2011 No revisions or updates are applicable at this time.
2.0 1/24/2011 Reissue entire manual.
ORIGINAL MANUAL ISSUE DATE: 1/2011
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE/TRAINING MANUAL
LCD Digital Color TV
AZ2-UK Chassis
Segment: P-2F
9-883-851-02
KDL-40BX420

MODEL LIST
MODEL COMMANDER DESTINATION MODEL COMMANDER DESTINATION
KDL-32BX320 RM-YD065 MX/LA
KDL-32BX320 RM-YD065 US/CND
KDL-32BX321 RM-YD065 MX/LA
KDL-32BX420 RM-YD065 MX
KDL-32BX420 RM-YD065 US/CND
KDL-32BX421 RM-YD065 MX
KDL-32BX421 RM-YD065 US/CND
KDL-40BX420 RM-YD065 MX/LA
KDL-40BX420 RM-YD065 US/CND
KDL-40BX421 RM-YD065 MX
KDL-40BX421 RM-YD065 US/CND
KDL-46BX420 RM-YD065 MX/LA
KDL-46BX420 RM-YD065 US/CND
KDL-46BX421 RM-YD065 US/CND
9-883-851-02

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 i
TABLE OF CONTENTS
Section 1 - Safety and Features.................................................1
Warnings and Cautions - English...............................................1
Safety-Related Warnings............................................................ 3
Warnings and Cautions - French ...............................................4
Safety Check-Out.......................................................................7
Self Diagnosis Function .............................................................9
Overview..................................................................................10
Features...................................................................................10
Scene Select............................................................................. 10
USB Input ................................................................................. 10
LightSensor™ Technology........................................................ 10
5 HD Inputs............................................................................... 10
BRAVIA® Sync™ Compatible ...................................................11
KDL-32BX320/32BX321 Models Only.......................................11
All Except KDL-32BX320/32BX321 Models ..............................11
Specications...........................................................................12
Section 2 - Software Requirements.........................................14
Overview..................................................................................14
Software Updates for customers..............................................14
Software Updates for Servicers ...............................................15
Software Update Responsibility................................................ 15
Checking the Software Version................................................. 15
Examples of Software Correctable Symptoms ......................... 16
Section 3 - Chassis Overview..................................................17
Overview..................................................................................17
Overall Circuit Description .......................................................19
A Board..................................................................................... 19
Power Supply............................................................................ 19
Inverter...................................................................................... 20
Switch Unit................................................................................ 20
H Board..................................................................................... 20
Section 4 - Troubleshooting.....................................................22
Overview..................................................................................22
Updating the software............................................................... 22
Video Failures ..........................................................................22
No Video................................................................................... 22
Video Distortion ........................................................................ 23
Audio Troubleshooting .............................................................24
Power Supply Troubleshooting ................................................25
Completely Dead Set................................................................ 25
TV Won’t Power On.................................................................. 25
Backlight Issues.......................................................................25
No Backlight, No Shutdown...................................................... 25
Protection Shutdown................................................................26
Standby LED Flash Count ........................................................ 26

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 ii
TABLE OF CONTENTS
Diagnostic Code Descriptions..................................................28
Viewing the Self Check Diagnostic History............................... 29
Clearing the Self Check Diagnostic List.................................... 30
Exiting the Self Check diagnostic screen.................................. 30
Test Points ...............................................................................30
Section 5 - Flow Charts and Diagrams ...................................31
Video Information.....................................................................31
Power Supply Information........................................................33
Protection Information..............................................................34
Section 6 - Disassembly/Part Number Information ...............36
Table-Top Stand Assembly Removal .......................................36
Rear Cover and Speakers Removal ........................................38
KDL-32BX320/32BX321/32BX420/32BX421 Only................... 38
KDL-40BX420/40BX421 Only................................................... 40
KDL-46BX420/46BX421 Only................................................... 42
A (Main) Board, G13/G14/G3 (Power Supply) Board and LCD
Panel Removal.........................................................................43
KDL-32BX320/32BX321 Only................................................... 43
KDL-32BX420/32BX421 Only................................................... 45
KDL-40BX420/40BX421 Only................................................... 47
KDL-46BX420/46BX421 Only................................................... 49
Cleaning the LCD Panel ........................................................... 49
Screw Legend..........................................................................50
Connectors...............................................................................50
KDL-32BX320/32BX321/32BX420/32BX421 Only................... 50
KDL-40BX420/40BX421 Only................................................... 51
KDL-46BX420/46BX421 Only................................................... 52
Accessories and Packaging.....................................................53
Miscellaneous ..........................................................................53
Remote Commander................................................................53
Wire Dressing ..........................................................................54
Section 7 - Service Adjustments .............................................56
Overview..................................................................................56
Updating the software..............................................................56
Accessing Service Adjustment Mode.......................................56
Accessing Factory Adjustment Mode.......................................57
Selecting the Panel ID Code..................................................... 58
Adjusting the Color Temperature .............................................. 59
Appendix A - Triage Sheets....................................................A-1
Appendix B - Operating Instructions ....................................B-1

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 1
WARNINGS AND CAUTIONS - ENGLISH
CAUTION
These servicing instructions are for use by quali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 qualied to do so.
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.
•Disconnect all cables when carrying the TV.
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.
!
SAFETY-RELATED COMPONENT WARNING!!
Components identi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 specied in this manual to prevent electric shock, re, or other hazard.
Circuit adjustments that are critical for safe operation are identi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.
SECTION 1 - SAFETY AND FEATURES

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 2
SECTION 1 - SAFETY AND FEATURES
CAUTION
WDo 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.
WDo Not use 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.
WDo Not spray water or detergent directly onto the TV screen . If liquid drips into the bottom of the screen it may cause a failure.
CLEANING THE LCD PANEL
CAUTION: When cleaning the TV, be sure to unplug the power cord to avoid any chance of electric shock.
Clean the cabinet of the TV with a dry soft cloth.
Wipe the LCD screen gently with a soft cloth.
RStubborn stains may be removed with a cloth slightly moistened with a solution of mild soap and warm water.
RIf using a chemically pretreated cloth, please follow the instruction provided on the package.
RNever use strong solvents such as a thinner, alcohol or benzine for cleaning.
RPeriodic vacuuming of the ventilation openings is recommended to ensure to proper ventilation.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 3
SECTION 1 - SAFETY AND FEATURES
SAFETY-RELATED WARNINGS
USE CAUTION WHEN HANDLING THE LCD PANEL
When repairing the LCD panel, be sure you are grounded by using a wrist band.
When installing the LCD panel on a 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 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-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 4
SECTION 1 - SAFETY AND FEATURES
WARNINGS AND CAUTIONS - FRENCH
ATTENTION!!
Ces instructions de service sont à l’usage du personnel de service quali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 qualié faire ainsi.
POUR TRANSPORTER LE TÉLÉVISEUR
•Transportez le téléviseur avec le nombre de personnes approprié ; un téléviseur de grande
taille doit être transporté 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.
ALERTE!!
A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.
!
ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
Les composants identies 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 identies dans le present manuel. Suivre ces procedures lors de chaque remplacement de composants critiques, ou
lorsqu’un mauvais fonctionnement suspecte.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 5
SECTION 1 - SAFETY AND FEATURES
AVERTISSEMENT
WN’utilisez pas de serviettes en papier, tout type de tampons ou chiffons abrasifs, ou matériaux en caoutchouc ou en vinyle pour nettoyer
l’écran. Ces types de matériaux peuvent facilement rayer l’écran, entraînant ainsi un dommage permanent.
WN’utilisez pas de produit de nettoyage contenant un nettoyant alcalin/acide, poudre abrasive ou solvant volatil, comme de l’alcool ou de
l’ammoniaque, du benzène, un diluant ou un insecticide. L’usage de ces types de nettoyants peut causer des dommages permanents à
l’écran.
WNe vaporisez pas d’eau ou de détergent directement sur l’écran du téléviseur. Si du liquide s’insère dans le bas de l’écran, cela peut causer
une panne.
NETTOYER L’ÉCRAN ACL
AVERTISSEMENT : Au moment de nettoyer le téléviseur, assurez-vous de débrancher le cordon d’alimentation an d’éviter tout risque
de choc électrique.
Nettoyez le caisson du téléviseur avec un chiffon doux et sec.
Essuyez l’écran ACL doucement avec un chiffon doux.
R Les taches tenaces peuvent être enlevées avec un chiffon légèrement humecté d’une solution de savon doux et d’eau tiède.
R Si vous utilisez un chiffon chimique prétraité, suivez les directives gurant à l’emballage.
RN’utilisez jamais de solvants puissants comme un diluant, de l’alcool ou du benzène pour nettoyer.
R Nous recommandons de passer l’aspirateur de façon périodique sur les ouvertures de ventilation an d’assurer une ventilation appropriée.