Sony KDL-40BX421, KDL-40BX420, KDL-32BX420, KDL-32BX320, KDL-32BX321 User Manual

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Page 1

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE/TRAINING MANUAL

AZ2-UK Chassis

ORIGINAL MANUAL ISSUE DATE: 1/2011

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.

Segment: P-2F

LCD Digital Color TV

9-883-851-02

Page 2

SERVICE/TRAINING MANUAL

AZ2-UK Chassis

Segment: P-2F

KDL-40BX420

LCD Digital Color TV

9-883-851-02

Page 3

MODEL LIST

MODEL COMMANDER DESTINATION MODEL COMMANDER DESTINATION

KDL-32BX320 RM-YD065 MX/LA

KDL-46BX420 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 US/CND

KDL-46BX421 RM-YD065 US/CND

9-883-851-02

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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

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

Examples of Software Correctable Symptoms ......................... 16

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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

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-32BX420/32BX421 Only................................................... 45

KDL-40BX420/40BX421 Only................................................... 47

KDL-46BX420/46BX421 Only................................................... 49

Cleaning the LCD Panel ........................................................... 49

Screw Legend ..........................................................................50

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 ii

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SECTION 1 - SAFETY AND FEATURES

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

• 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.

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

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.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 1

mark on the exploded views are critical for safe operation.

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SECTION 1 - SAFETY AND FEATURES

CAUTION

W 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.

W Do 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.

W 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.

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.

R Stubborn stains may be removed with a cloth slightly moistened with a solution of mild soap and warm water. R If using a chemically pretreated cloth, please follow the instruction provided on the package. R Never use strong solvents such as a thinner, alcohol or benzine for cleaning. R Periodic vacuuming of the ventilation openings is recommended to ensure to proper ventilation.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 2

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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 3

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SECTION 1 - SAFETY AND FEATURES

•Transportez le téléviseur avec le nombre de personnes approprié ; un téléviseur de grande

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

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

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 4

sur les schemas de principe, les vues explosees et les listes de pieces sont

Page 10

SECTION 1 - SAFETY AND FEATURES

AVERTISSEMENT

W N’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.

W N’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.

W Ne 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. R N’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.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 5

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SECTION 1 - SAFETY AND FEATURES

AVERTISSEMENTS DE SÉCURITÉ

FAITES ATTENTION LORS DE LA MANIPULATION DE L’ÉCRAN ACL

Au moment de réparer l’écran ACL, assurez-vous d’être mis à la terre à l’aide d’un bracelet à cet effet.

Au moment d’installer le panneau ACL sur un mur, il doit être maintenant en place à l’aide des 4 orices de xation présents au

couvercle arrière.

1. N’appuyez par sur le bord du panneau ou du cadre an d’éviter le risque de choc électrique.

2. Ne rayez pas ou n’appuyez pas sur le panneau avec des objets pointus.

3. Ne laissez pas le module exposé à des températures élevées ou dans des secteurs à haut niveau d’humidité pour une période prolongée.

4. N’exposez pas le panneau ACL à l’ensoleillement direct.

5. Évitez le contact avec l’eau, car elle peut causer un court-circuit dans le module.

6. Déconnectez l’alimentation c.a. au moment de remplacer le rétroéclairage ou le circuit inverseur (Un voltage élevé se produit

dans le circuit inverseur à 650Vrms).

7. Nettoyez toujours le panneau ACL avec un chiffon doux.

8. Faites attention lors de la manipulation des ls ou connecteurs du circuit inverseur. Le fait d’endommager les lms peut

causer un court-circuit.

9. Protégez le panneau des décharges électrostatiques an d’éviter d’endommager le circuit électronique (C-MOS).

10. Pendant la réparation, NE LAISSEZ PAS l’alimentation en fonction pendant plus de 1 heure pendant que l’écran du téléviseur

repose sur un tissu.

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SECTION 1 - SAFETY AND FEATURES

SAFETY CHECK-OUT

After correcting the original service problem, perform the following safety checks before releasing the set to the customer:

1. Check the area of your repair for unsoldered or poorly soldered connections. Check the entire board surface for solder splashes and bridges.

2. Check the interboard wiring to ensure that no wires are “pinched” or touching high-wattage resistors.

3. Check that all control knobs, shields, covers, ground straps, and mounting hardware have been replaced. Be absolutely certain that you have replaced all the insulators.

4. Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair. Point them out to the customer and recommend their replacement.

5. Look for parts which, though functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement.

6. Check the line cords for cracks and abrasion. Recommend the replacement of any such line cord to the customer.

7. Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below.

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SECTION 1 - SAFETY AND FEATURES

Trouble Light

AC Outlet Box

Ohmmeter

Cold-water Pipe

To Exposed Metal Parts on Set

0.15 µF

Earth Ground

AC Voltmete

(0.75V)

LEAKAGE TEST

The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed

0.5 mA(500 microamperes). Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers’ instructions to use these instructions.

2. A battery-operated AC milliampmeter. The Data Precision 245 digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate low voltage scale.

The Simpson’s 250 and Sanwa SH-63TRD are examples of

passive VOMs that are suitable. Nearly all battery-operated digital multimeters that have a 2 VAC range are suitable (see Figure A).

Figure A. Using an AC voltmeter to check AC leakage.

HOW TO FIND A GOOD EARTH GROUND

A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw on most AC outlet boxes is also at earth ground.

If the retaining screw is to be used as your earth ground, verify that it is at ground by measuring the resistance between it and a cold-water pipe with an ohmmeter. The reading should be zero ohms.

If a cold-water pipe is not accessible, connect a 60-to 100-watt trouble-light (not a neon lamp) between the hot side of the receptacle and the retaining screw. Try both slots, if necessary, to locate the hot side on the line; the lamp should light at normal brilliance if the screw is at ground potential (see Figure B).

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 8

Figure B. Checking for earth ground.

Page 14

Self Diagnosis

Supported model

SECTION 1 - SAFETY AND FEATURES

SELF DIAGNOSIS FUNCTION

The TVs in this manual contain a self-diagnostic function. If an error occurs, the STANDBY LED will automatically begin to ash. The number of times the LED ashes translates to a probable source of the problem. A denition of the STANDBY LED ash indicator is listed in the Operating

Instruction manual for the user’s reference.

If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these problems occur.

For complete information, refer to Section 4 - Troubleshooting on page 22.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 9

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SECTION 1 - SAFETY AND FEATURES

OVERVIEW

The AZ2-UK chassis is one of several designs for the 2011 model line of Sony Bravia® LCD televisions. This manual covers the following models:

KDL32BX320

KDL32BX321

KDL32BX420

KDL32BX421

KDL40BX420

KDL40BX421

KDL46BX420

KDL46BX421

The chassis design revolves around the video processing circuits located on the A board. The key difference between models is determined by the size of the LCD panel and its manufacturing source. This manual will describe the new circuit features and individually describe the models based on these differences.

FEATURES

Several new features are introduced in this chassis model lineup along with some carryovers from the previous year.

SCENE SELECT

Easily manage your settings for the best HDTV experience with Scene

Select. Choose from ve different packages each with precongured

picture and audio settings, including Sports, Photo, Game, Cinema and Music.

USB INPUT

Share your photos on the big screen or listen to your favorite music. Simply connect your digital camera, USB-enabled MP3 player, or USB storage device directly to your HDTV’s USB input.

LIGHTSENSOR™ TECHNOLOGY

Enjoy customized picture brightness and save energy without lifting

a nger. The built-in Light Sensor automatically adjusts the picture

brightness based on the amount of light in the room.

5 HD INPUTS

Get versatile HD connection options with ve HD inputs, including

two HDMI™ inputs, two HD component inputs provide added HDcapable connectivity in addition a PC input (HD-15 pin) lets you use your HDTV as a computer monitor.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 10

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SECTION 1 - SAFETY AND FEATURES

BRAVIA® SYNC™ COMPATIBLE

Conveniently operate and control other BRAVIA® Sync™ compatible devices - including BRAVIA® HDTVs, Blu-ray Disc™ Players, surround sound systems, Handycam® camcorders and Cyber-shot® digital still cameras, all with one remote control.

KDL-32BX320/32BX321 MODELS ONLY

HD 720P RESOLUTION PANEL

Enjoy crisp, detailed and vibrant images in 720p picture quality while watching movies, sports and primetime HD television broadcasts via the 16:9 wide screen panel (1366 x 768).

ALL EXCEPT KDL-32BX320/32BX321 MODELS

FULL HD 1080P RESOLUTION

Experience amazing Full HD 1080p picture quality, the highest athome resolution. Take full advantage of HD sources like a Blu-ray Disc™ Player or PlayStation®3 gaming console via the 16:9 wide screen panel (1920 x 1080).

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 11

Page 17

SPECIFICATIONS

Licensing Information

System

SECTION 1 - SAFETY AND FEATURES

Television system NTSC: American TV standard

Channel coverage Analog terrestrial: 2 - 69 / Digital terrestrial: 2 - 69

Panel system LCD (Liquid Crystal Display) Panel Speaker output

(except KDL-22BX321/BX320) Speaker output

(KDL-22BX321/BX320 only)

Input/Output jacks

CABLE/ANTENNA 75-ohm external terminal for RF inputs VIDEO IN 1/2 VIDEO: 1 Vp-p, 75 ohms unbalanced, sync negative

COMPONENT IN YP

AUDIO OUT 500 mVrms (typical) DIGITAL AUDIO OUT

(OPTICAL)

PC/HDMI IN 1 AUDIO INPUT Stereo mini jack, 500 mVrms, (Typical) / Impedance: 47 kilohms

ATSC (8VSB terrestrial): AT SC compliant 8VSB QAM on cable: ANSI/SCTE 07 2000 (Does not include CableCARD functionality)

Analog Cable: 1 - 135 / Digital Cable: 1 - 135

8 W + 8 W

5 W + 5 W

AUDIO: 500 mVrms (Typical) / Impedance: 47 kilohms

BPR (Component Video): Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative /

B: 0.7 Vp-p, 75 ohmsPR: 0.7 Vp-p, 75 ohms /

Signal format: 480i, 480p, 720p, 1080i, 1080p AUDIO: 500 mVrms (Typical) / Impedance: 47 kilohms

Audio: Two channel linear PCM 32, 44.1 and 48 kHz, 16, 20 and 2 4bits, Dolby Digital

PC Input

PCM/Dolby Digital optical signal

See the PC Input Signal Reference Chart for PC and HDMI IN in the OI manual.

p42/0801 ,p0801 ,i0801 ,p027 ,p084 ,i084 :oediV :IMDHNI IMDH

evitisop ,smho 57 ,p-pV 7.0 ,BGR golana ,nip-51 bus-DNI CP

Macintosh is a trademark of Apple Inc., registered in the U.S. and other countries.

HDMI, the HDMI logo, and High-Denition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing, LLC in the United States and other countries.

Fergason Patent Properties, LLC: U.S. Patent No. 5,717,422 U.S. Patent No. 6,816,141

Manufactured under license from Dolby Laboratories. Dolby and the double-D symbol are trademarks of Dolby Laboratories.

Blu-ray Disc is a trademark.

“BRAVIA” and , BRAVIA Sync, and are trademarks or registered marks of Sony Corporation.

“PlayStation” is a registered trademark and “PS3” is a trademark of Sony Computer Entertainment Inc.

Your BRAVIA TV is ENERGY STAR in the “Home” mode. It meets strict energy eciency guidelines set by the U.S. Environmental Protection Agency and Department of Energy. ENERGY STAR is a joint program of these government agencies, designed to promote energy ecient products and practices. Changes to certain features, settings, and functionalities of this TV (i.e. Picture/Sound, Power Savings) can increase or change the power consumption. Depending upon such changed settings, the power consumption may exceed the limits required for the ENERGY STAR qualication in the “Home” mode.

qualied

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 12

Page 18

SECTION 1 - SAFETY AND FEATURES

Model name KDL- 46BX421

40BX421

32BX421

32BX321

Power and others

Power requirement110-240 V AC, 50/60 Hz (U.S.A./Canada/Mexico 120 V AC, 60 Hz) Power consumption

in use in standby Less than 0.25 W with 120 V AC and with 240 V AC less than 0.35 W

Screen size (inches measured diagonally)

Speaker/Full range (2) (mm)

Dimensions with stand (mm)

wall-mount hole pattern (mm)

Mass with stand (kg)

Supplied accessories Remote control RM-YD065 (1)/Size AA batteries (2)/Operating Instructions (1)/Quick Setup Guide

common to all models

individual models Screw (7)

Optional accessories Connecting cables / Support Belt Kit / Wall-Mount Bracket: SU-WL500

(inches)

without stand (mm)

without stand (kg)

(inches)

(lb.)

(1)/Warranty Card (1)/Safety and Regulatory Booklet (1)/Software License (1)/Stand installation guide (1)/Table-Top Stand (1 set)

46BX420

1,120 × 707 × 294

/8 × 27 7/8 × 11 5/

1,120 × 674 × 97

/8 × 26 5/8 × 3 7/8

20.1

44.3

17.7

39.0

003 × 003

40BX420

0464

40 × 100

/8 × 4)

988 × 632 × 250

39 × 25 × 9

988 × 600 × 94

39 × 23

/8 × 3 3/4

15.7

34.6 13

30.0

9.1

W 511W 081W 012

002 × 002

32BX320

× )latnoziroh( stod 883,1

)lacitrev( senil 867

32BX420

31.5

)lacitrev( senil 080,1 × )latnoziroh( stod 029,1 noituloser yalpsiD

m in Operating Instruction manual)argaid ot refer :htgnel( 6M)mm( ezis wercs tnuom-llaw

(32 class)

800 × 528 × 220

/2 × 20 7/8 × 8 3/

800 × 496 × 91

/2 × 19 5/8 × 3 5/8

10.7

23.6

20.1

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 13

Page 19

SECTION 2 - SOFTWARE REQUIREMENTS

OVERVIEW

There are 2 reasons for updating the software on the TVs.

• Software updates for customers These updates are for enhancements or improvements that

have been made to the software after the TV was released. These updates are accessed by the customer from the Sony Support Site at http://esupport.sony.com.

• Software update for servicers These updates are specically for servicers to use during a

service call and are only available on the Sony Authorized Servicer Portal at http://www.sony.com/asp.

SOFTWARE UPDATES FOR CUSTOMERS

The subject of software updates is a very important. The televisions of today have advanced to the point where they are not simply a television anymore. They are evolving into devices that are designed to integrate with numerous other devices found in the home. Some examples are: Portable audio and video devices, still cameras, home computer networks and accessing the internet to name a few.

Communications with these varying devices requires that the television be compatible with varying communications protocols. Although standards are detailed for each of these protocols, the real world dictates that occasional errors may occur that could prevent devices from operating or communicating properly.

Keeping the software in the television up-to-date is a procedure that is normally handled by the owner of the television. Most customers who own computers and other digital devices are familiar with and are accustomed to updating the software in their products. If a customer contacts the Sony Customer Support Center and it is deemed to be correctable with a software update, the issue is handled at the customer level.

Software updates can be performed by:

• Customer Manual Downloads: Software updates can be accessed by the customer from the Sony Support Site at

http://esupport.sony.com where they can be downloaded

and placed on a USB thumb drive to be loaded onto the TV.

The instructions for downloading the software le vary from

chassis to chassis and sometimes from model to model. The customer is provided with the instructions to properly format

the USB thumb drive, unzip the le, and the procedures for

loading the software into the television.

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SECTION 2 - SOFTWARE REQUIREMENTS

SOFTWARE UPDATES FOR SERVICERS

The models in this manual utilize a “generic” type main board. In the past, many different main boards needed to be stocked due to differences in software requirements. The software loaded on the

board was specic to the model and its features along with the type

of LCD panel installed during production.

Replacement main boards are now stocked with basic software. Once the replacement board is installed in the unit, the most current software needs to be installed using a USB thumb drive containing the necessary software downloaded.

This new method of supplying main boards signicantly reduces

the complexity of replacing LCD panels and main boards. Information about the LCD panel is stored on the TCON circuits. This information is automatically loaded onto the main board when the TV is powered up. With the correct software version the main board and/or the TCON or LCD panel can be replaced more

efciently. The software update and procedures for the software

installation are located on the Sony Authorized Servicer Portal at

http://www.sony.com/asp.

SOFTWARE UPDATE RESPONSIBILITY

Software updates are designed to be performed by the customer. Warranty repairs in which the issue can be resolved by a software update are not reimbursable. Most issues involving software updates are handled by the customer service center and should not be directed to an authorized service center. It is the responsibility of the servicer to prevent service calls for issues that involve software updates. Exceptions to this are certain cases whereby the customer is unable or unwilling to perform the task. In this situation,

the servicer will be notied and receive the proper authorization for

reimbursement.

It is the servicer’s responsibility, however, to make certain that any

TV requiring a legitimate service is running the latest software version and to install it if necessary.

CHECKING THE SOFTWARE VERSION

The easiest way to check the version of software that is currently on the TV is to access the Contact Sony screen by using the customer menu.

In addition to software installation, service adjustment information

may need to be modied or veried to complete the service of the

TV. Service adjustment information is covered in Section 7 - Service

Adjustments on page <?>.

FIGURE 2-1. SOFTWARE VERSION ON THE CONTACT SONY SCREEN

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SECTION 2 - SOFTWARE REQUIREMENTS

EXAMPLES OF SOFTWARE CORRECTABLE SYMPTOMS

Always check the Sony Authorized Servicer Portal at www.sony.

com/asp site for any known and/or listed issues that are software

related. Most symptoms that are correctable by software updates involve communications issues with other devices or minor glitches

in the operation of a specic function. Below is a list of some of the

symptoms that may be corrected with a software update:

• Fluctuations in picture brightness

• Intermittent picture freezing or noise

• Problems with certain inputs (especially HDMI)

• Intermittent or distorted audio

• Erratic remote control operation

• Unit turns on and off by itself

• Loss of color

• Internet connectivity

• Certain features not working correctly

(photo or video le viewing)

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SECTION 3 - CHASSIS OVERVIEW

OVERVIEW

The primary circuits contained in this chassis consists of a main circuit board (designated as the A board), power supply board (G13 for the 32”, G14 for the 40”, and G3 for the 46”), Timing Control (TCON), and the LCD panel assembly. The remaining boards contain switches and LED’s.

NOTE: For connector part number information, refer to Connectors on page 50. For Wire Dressing information, refer to Wire Dressing on page 54.

G13 (32” MODELS ONLY)

SWITCH UNIT

FIGURE 3-1. CIRCUIT BOARD LOCATION FOR KDL-32BX320/32BX321/32BX420/32BX421 ONLY

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SECTION 3 - CHASSIS OVERVIEW

G14 (40” MODELS ONLY)

G3 (46” MODELS ONLY)

SWITCH UNIT

FIGURE 3-2. CIRCUIT BOARD LOCATION FOR KDL-40BX420/40BX421/46BX420/46BX421 ONLY

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SECTION 3 - CHASSIS OVERVIEW

OVERALL CIRCUIT DESCRIPTION

Figure 3-3. Block Diagram on page 21 provides an overview of

the AZ2-UK chassis. Below is a description of the components and their functions.

A BOARD

Common to all models utilizing the AZ2-UK chassis, the A board contains most of the video processing circuitry along with all audio processing. Control of the television is accomplished via a CPU embedded within the MT5388 processor. Below is a list of the key components located on the A board.

TUNER

The tuner is a combination ATSC/NTSC unit. It can receive traditional analog NTSC signals via cable or terrestrial along with ATSC digital signals via terrestrial (8VSB) or cable (64 or 256 QAM).

MT5388 PROCESSOR

IC U3 performs the majority of the necessary audio and video processing on the A board.

Analog Video Input Switch: All analog video sources are selected and A/D converted and scaled (if necessary) to 1280 X 720p 60HZ resolution.

digitally. Digital audio from the tuner and HDMI sources is also input

and processed. Class D amplier U8 provides the drive for the

speakers.

HDMI Input and Switching: The customer can select the HDMI1 or HDMI2 input. Each HDMI input contains a dedicated EDI NVM (not shown) to provide display information data to any device connected via the HDMI inputs.

CPU: The CPU internal to the MT5388 processor controls all aspects of the television functions. Input from the user along with monitoring of critical circuits is also performed by this CPU.

LVDS Transmitter: Integrated into U3 is a Low Voltage Differential Signaling (LVDS) transmitter. This circuit converts the 8-bit parallel RGB video information into a set of high speed serial lines for noisefree transmission to the TCON circuits located internally to the LCD panel.

POWER SUPPLY

There are 3 different power supply boards used in the models in this manual. The type of board depends on the size of LCD panel. They are:

G13 for the 32” models

G14 for the 40” models

G3 for the 46’ models

Digital Audio and Video Decoder: The MPEG2 and Digital Dolby audio streams are received from the tuner for decompression. All video sources which are not native 1280 X 720p 60HZ are scaled to

this resolution. Digital audio content is output to the class D amplier for processing and amplication.

Audio Processing: Analog audio sources are selected and A/D converted directly by U3. The audio information is then processed

There are 2 distinct sections on the power supply:

Standby Supply: Continuously operational as long as AC power is applied, the standby supply generates 3.3VDC for the circuits requiring power while the unit is turned off. An unregulated 15-volt line is present to provide power to the main relay, PFC and main power supply at turn-on.

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SECTION 3 - CHASSIS OVERVIEW

Main Supply: Once the power supply receives a power-on command from the CPU on the A board, the main switching supply is turned on to provide a regulated 12V source, a dedicated un-regulated 15V for the audio circuits and an unregulated 24V source for the inverter circuit.

INVERTER

The inverter receives the unregulated 24V from the power supply board and generates the required high voltage AC to power the backlight lamps. A control line to turn on the inverter (backlights on) is used in conjunction with a dimmer control to vary the light level of the CCFL lamps.

As of the writing of this manual, the inverter is not available as a replacement part. The LCD panel assembly must be replaced.

SWITCH UNIT

This board contains the power, channel and volume up/down and menu buttons.

H BOARD

The power, standby and timer LED’s are located on this board along with the IR remote receiver and light sensor.

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SECTION 3 - CHASSIS OVERVIEW

COMPOSITE OR

COMPONENT 1

COMPONENT 2

HDMI 1

HDMI 2

*HDMI 3

*BX421 MODELS

ONLY

PC HD15

USB2.0

AC IN

TUNER

A/V DECODER A/V PROCESS

SWITCH

UNIT

MT5388

CPU

LED

IR RX

LIGHT

SENSOR

CLASS D

AUDIO

AMP

IC4305

TEMP

SENSE

ANALOG AUDIO OUT

OPTICAL AUDIO OUT

LVDS

INVERTER

LCD PANEL

24V B+

POWER SUPPLY

AND CTL

G13 (32") G14 (40")

G3 (46")

FIGURE 3-3. BLOCK DIAGRAM

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SECTION 4 - TROUBLESHOOTING

OVERVIEW

Most troubleshooting for this chassis focuses on the 3 major components used:

• The Main Board (A)

• Power Supply

• LCD Panel

This chapter provides practical troubleshooting procedures based on the various symptoms that will appear when a particular circuit fails to operate properly. Typical failure symptoms will be discussed

in this chapater with troubleshooting owcharts for each symptom in

the Section 5 - Flow Charts and Diagrams on page 31.

NOTE: Always remember to check the Sony Authorized Servicer Portal at www.sony.com/asp to access the latest technical bulletins along with triage charts to quickly identify the most like part to complete the repair based on the symptom.

UPDATING THE SOFTWARE

As mentioned in Section 2 - Software Requirements, there are several issues that may be resloved by updating the software to the latest version. For a list of possible correctable issues see Checking

the Software Version on page 16.

VIDEO FAILURES

Problems that develop in the video circuits can appear as subtle or major distortions, a loss of one or more colors, improper video level, or a complete loss of video. When troubleshooting LCD display devices the problem must be isolated to 2 major components: The main board where the video processing is performed or the LCD panel. In some cases the TCON may not be available as a separate component and replacement of the LCD panel is required to rectify a TCON problem.

Distortion in the video signal that affects all inputs can be challenging at times since any of the above mentioned components can be the cause. Fortunately, each of these components tends to generate unique symptoms when a problem occurs. Some distortions may occur that could be caused by either of these components but a good understanding of the circuits and further investigation will isolate the suspected circuit. The following sections will cover the various scenarios of problems that may occur in the video processing circuits.

NO VIDEO

A “no video” complaint can be caused by a number of reasons. The

rst step is to determine if the condition is present from all input

sources. If any video source is working properly, the TCON (located within the LCD panel) can be assumed to be OK. The backlights are also functioning properly. Although it is unusual for a backlight failure to cause a complete loss of video (the TV will shut down if a backlight power or open LED is detected) there have been cases where the backlights have failed to turn on without the unit shutting down.

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SECTION 4 - TROUBLESHOOTING

If the loss of video occurs on all inputs, the problem will require additional diagnostic work. The presence of audio is an important sign to check for. Missing audio accompanying a loss of video helps to eliminate the TCON as the cause and would point to the main board as the culprit. If audio is present, the next step is to determine if the video loss is occurring in the video process circuits on the main board, or the LVDS cable link from the main board to the LCD panel.

Service Tip: If a service call is made for a “no video” complaint, a warranty repair would require the technician to bring the main board to the location. Install the main board and if the video problem is not resloved it is safe to assume the problem might reside in the TCON. If the TCON is not available as a replacement part, this issue would require replacing the LCD panel.

HINT: One method to test a TCON, which works rather well in most cases, is to remove the LVDS connector at the panel connection while the TV is running. Be certain to release the lock tabs and handle the connector carefully to avoid damage. If there is any tape securing the cable to the panel near the input, temporarily remove the tape to allow free movement of the cable.

Carefully insert and remove the connector while slightly rocking it. Observe the screen as you do this. If any activity appears on the

screen (ashes, lines or patterns) The TCON is OK. The TV may shut

down within a 10 to 20 second period because the protect circuits have detected a TCON failure. If this happens, simply re-insert the LVDS connector, turn the TV back on, and try the procedure again. Normally, you should be able to detect something on the screen within a matter of seconds.

Figure 5-2. Video Distortion Flowchart on page 32 should provide

assistance in isolating the cause of the video loss.

VIDEO DISTORTION

This is, perhaps, the more difcult failure to diagnose. It is difcult

when talking to the customer on the phone because an accurate description of the problem must be obtained in order to determine

which part (or parts) to bring to the location. It may also be difcult

for the technician when the problem is witnessed.

If the problem is specic to one or more inputs it should be easy to

determine if the fault lies on the main board or a device that is plugged into it. If the distortion occurs at all inputs it must be analyzed based on what appears on the display and isolated to the main board, TCON, or LCD panel. These components usually cause distortions

that are unique to the specic circuit. Below is an example of the

typical distortions:

Main Board (A Board): Since the video signal is processed on a frame-by-frame basis it is very unlikely that a distortion that is

occurring on a specic part of the display panel is originating here.

Distortion problems originating in the video process circuits tend to affect the entire picture. The following are some examples:

• Improper color reproduction or no color

• Improper luminance levels

• Lack of detail in the picture

• Distortions that change with movement in the video

• Diagonal lines

• No video

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SECTION 4 - TROUBLESHOOTING

TCON: Since the TCON allocates the RGB video information based

on specic timing information, the distortions tend to be xed and

usually appears as symmetrical patterns that occupy most (or a

signicant portion) of the display. The TCON circuits in this chassis

are integrated within the LCD panel which requires replacement of the entire panel to remedy a TCON failure. Some examples of TCON errors:

• No video

• Thin vertical lines spanning most or all of the display

• More that one column of wide vertical columns which may

appear black or any color, or may contain distorted video.

• Multi-colored vertical line patterns with a repetitive pattern

Service Tip: Whenever vertical lines of distortion appear, select an inactive input or disconnect the antenna in the tuner mode. The idea

is to not have a high-denition signal as the source. This allows the

picture zoom functions to operate.

Change the zoom mode from the remote commander. If the lines follow the normal and zoom modes the problem resides on the main

board. If the lines remain xed throughout the various zoom modes

the TCON is at fault.

LCD Panel: Distortions originating from the LCD panel tend to be localized with the exception of horizontal line issues. A failure of a gate driver can cause a horizontal distortion with all video content below that point appearing distorted. Depending on which gate driver has failed, the distortion may only cover a small area of the bottom of the screen if the driver failed near the bottom of the panel, or a large area of the screen if the driver failed near the top of the panel. With the exception of visible physical damage, the following are some examples of LCD panel related distortions:

• Any single, thin vertical line (regardless of color)

• Any thin vertical lines isolated to a specic area of the screen

• A singe vertical column of lines of any color or containing

distorted video

• Any xed horizontal lines

• Blotches of black or improperly colored areas

• Ghosting of images in which the entire image is repeated one

or more times

A thorough understanding of how the video is processed throughout the chain of circuits all the way to the panel is important. A past article written for the Sony Newsletter described, in detail, how this process works.

Figure 5-2. Video Distortion Flowchart on page 32 will assist in isolating

which component is causing the distortion.

AUDIO TROUBLESHOOTING

Since all audio signals are input, processed and amplied by the

main board, any issue involving the loss of audio or audio distortions which are present at all inputs would dictate that the issue can be resolved by replacing the main board. It is possible that a software update might also resolve the issue, but it is very unusual for a software update to affect all sources. Once again, always check the Sony Authorized Servicer Portal at www.sony.com/asp for any known and/or listed issues that are software related.

Audio problems that are input specic (especially the HDMI and

digital sources such as the USB input and tuner) are more likely to point to the need for a software update and this is especially true if the problem is intermittent.

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SECTION 4 - TROUBLESHOOTING

POWER SUPPLY TROUBLESHOOTING

Failures in the power supply circuits that prevent the TV from turning on are caused by one of the following scenarios:

• Complete failure of the standby and main power supplies.

• Failure of the main supply including the main switching regulator,

PFC circuit, main relay and other components required to turn the circuits on.

• The power supply is not receiving a turn-on command from the CPU.

COMPLETELY DEAD SET

A complete power supply failure is generally the result of severe transients in the AC line such as those incurred during an electrical storm. This model line utilizes a red standby LED located on the lower left front bezel that is lit whenever the TV is receiving AC power and is turned off. If it is not lit, and AC power to the television

is conrmed, replacement of the power supply board should rectify

the problem.

TV WON’T POWER ON

This situation assumes that the red standby LED is lit when AC power is applied to the TV. A lit standby LED indicates that the standby power supply is operational, and the CPU on the main board is at least partly operational. In this case it is likely that the main power supply is either not being turned on or it has failed. Use the power-on button on the right side of the TV to attempt a turn-on and eliminate a defective remote control system. Figure 5-3. Power Supply Flowchart

on page 33 will assist in isolating the power problem.

BACKLIGHT ISSUES

Under normal circumstances, any failures in the backlighting system will cause the unit to shut down. If any section of the inverter circuits fails to operate properly, the unit will shut down and blink the standby LED in groups of 6.

If one or more of the uorescent backlights fails to light, the over-

voltage protection circuit of the inverter is activated. The inverter shuts down and the same 6-blink protect event occurs.

The recommended approach for a 6-blink shutdown is to determine if the backlights are turning on before the shutdown. The easiest way to determine this is to watch for the Sony logo to appear on the screen. The television will make 2 or 3 attempts to achieve proper lighting of the lamps. If the Sony logo appears, the backlights are turning on and the problem is likely due to one of the lamps not lighting. If the lamps never turn on and no Sony logo appears on the screen, the inverter is the likely suspect.

NO BACKLIGHT, NO SHUTDOWN

It is possible for a symptom of no backlighting to occur that does not cause the television to go into protective shutdown. Dynamic dimming control of the backlights is performed by monitoring information from the TCON circuits. This is in the form of data and determines the brightness level of the backlights based on video content.

If the TCON fails to process the RGB video data, or if the dimmer data line fails, the backlights will not turn on. Audio will be present if the selected input has it available. The television will remain on

indenitely with the green Power LED lit. In this scenario, the LCD

panel must be replaced.

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SECTION 4 - TROUBLESHOOTING

PROTECTION SHUTDOWN

Self Diagnosis

Critical voltages and circuit operations are monitored by the CPU on the main board. If a fault is detected the Self-Diagnostic function in the TV will force the TV to shut down by the CPU. The monitored

circuit in which the fault occurred will cause the CPU to ash the

Stand-By LED in groups of repeating sequences. The number of

blinks in these groups identies which voltage or circuit caused the

protection event.

Not all of the available protect codes are used in every model. For example, models that are LED backlit do not use the 4-blink balancer error as this circuit is found in models that are backlit with

uorescent lamps. The following list contains the protect circuits and

diagnostics codes used in the models listed in this manual. Figure

5-4. Protection Shutdown Flowchart on page 34 provides guidance in

locating the possible component causing the shutdown.

Supported model

STANDBY LED FLASH COUNT

FIGURE 4-1. LED DISPLAY

2 times

5 times

LED ON 0.3 sec.

LED OFF 0.3 sec.

LED OFF

3 sec.

FIGURE 4-2. BLINK COUNT

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SECTION 4 - TROUBLESHOOTING

2X Blink - Main Power Error

A loss of REG12V from the power supply triggers this protect event. This symptom is usually remedied by replacing the power supply board. If the error continues after the power supply board is replaced, suspect excessive loading which is causing the power supply to shut down. This is usually caused by a failure of the inverter circuits. Unplug the inverter and turn the TV back on. If a 6X error is displayed, the inverter (or LCD panel) must be replaced.

3X Blink- DC Regulator/Audio Error

The REG 5V and D3.3V source originating on the main board is monitored for low-voltage conditions by the CPU. A failure causing a 3X shutdown would require replacing the main board.

5X Blink - TCON Error

A communications error with the timing control circuits (TCON) has occurred. If the TCON is available for replacement, replace the TCON. If the TCON is not available, the LCD panel must be replaced since the TCON circuit is part of the LCD panel assembly. In rare cases a loose or defective LVDS cable could also be the cause.

6X Blink - Backlight System Failure

If the inverter circuits fails to generate high voltage or one or more of the backlight lamps fails to light, the television will shut down and display this diagnostics error. Observing for the presence of backlighting is crucial in determining which component is likely at fault.

If the backlights turn on before the 6X shutdown occurs, it is safe to assume that the inverter circuits are functioning and one of the lamps failed to ignite. Replacing the LCD panel is necessary. If the backlights never turn on before the 6X shutdown, the inverter has failed. If the inverter is available for replacement, replace the inverter. If the inverter is not available, replace the LCD Panel.

7X Blink - Temperature Failure

A digital thermometer IC located on the main board provides a temperature reading of the chassis and LCD panel. If the temperature exceeds a pre-determined point the TV will shut down. If this problem occurs immediately at turn-on, the temperature sensing IC has failed and replacing the main board is required. If this occurs after the TV has been running for a while, check for ventilation issues that could cause the TV to run hotter than normal.

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SECTION 4 - TROUBLESHOOTING

DIAGNOSTIC CODE DESCRIPTIONS

The Diagnotic Table provides an overview of the number of times the Standby LED blinks and the possible location. To access the Triage documents for the models listed in this manual, login into the Sony Authorized Servicer Portal at www.sony.com/asp.

Diagnostic Item

MAIN_POWER Main Power Over Voltage Protection 2

DC_ALERT AUD_PORT

BALANCER Panel Balancer Error 4 NOT USED TCON ERR TCON Error

BACKLITE Backlight Error 6

TEMP_ERR Temperature Error

Description

DC Alert

Audio Error Detection

FIGURE 4-3. DIAGNOSTIC TABLE

Number of times

Standby LED blinks

5 LCD Panel

Possible Location

G13 (Power) Board (for 32" models only)

G14 (Power) Board (for 40" models only)

G3 (Power) Board (for 46" models only)

A Board A Board

G13 (Power) Board (for 32" models only)

G14 (Power) Board (for 40" models only)

G3 (Power) Board (for 46" models only)

LCD Panel

G13 (Power) Board (for 32" models only)

G14 (Power) Board (for 40" models only)

G3 (Power) Board (for 46" models only)

A Board

NOTE: To provide information to customers regarding how to use their TV features or FAQs, refer the customer to the Sony esupport webstie at http://esupport.sony.com/.

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SECTION 4 - TROUBLESHOOTING

VIEWING THE SELF CHECK DIAGNOSTIC HISTORY

It is possible to bring up past occurrences of a failure for conrmation on the Self Check diagnostic history screen. This feature is useful for

failures which are intermittent or when the customer is not sure what is causing the television to shut down.

1. 1. TV must be in standby mode. (Power off).

2. Press the following buttons on the Remote Commander within a second of each other: DISPLAY

* NOTE: This differs from accessing Service Adjustments Mode (Volume +)

Channel 5 Volume -

SELF CHECK

Back << 002 MAIN_POWE 001 001 indicates an error was detected 003 AUD_PORT 000 000 indicates no error was detected 003 DC_ALERT 000 004 BALANCE 005 TCON_ERR 000 005 HFR_ERR 000 005 P_ID_ER 005 PANEL_POWE 000 006 BACKLITE 000 007 TEMP_ERR 000

000

POWER

00000 00010 00000 [Menu] Exit

Panel Operation Time by Hour (max 99999)

Boot Count (max 99999)

Total Operation Time by Hour (max 99999)

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SECTION 4 - TROUBLESHOOTING

CLEARING THE SELF CHECK DIAGNOSTIC LIST

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic history after you have completed the repairs to be sure you have cleared the result display to “0”.

1. To clear the Error history and Error count: Press the

Channel 8 Channel 0.

To clear the Panel operation time: Press the Channel 7

Channel 0.

EXITING THE SELF CHECK DIAGNOSTIC SCREEN

1. To exit the Self Diagnostic Self Check screen, turn off

the power to the TV by pressing the POWER button on the remote or the POWER button on the TV.

TEST POINTS

Figure 5-5. Power and Control Block Diagram on page 35 contains the

board-to-board connector and pin information to identify voltages, signal and control lines for troubleshooting purposes. All critical voltages and control signals are easily accessed at the power supply board. Use this drawing in conjunction with the previously discussed

troubleshooting techniques and owcharts availalbe in Section 5 -

Flow Charts and Diagrams on page 31 for testing operating voltages

and control signals.

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Page 36

SECTION 5 - FLOW CHARTS AND DIAGRAMS

VIDEO INFORMATION

No Video

Backlights

turned on?

Yes

Any OSD

graphics

present?

Unplug LVDS

connector at

TCON while unit

is running. This may need to be done more than

once

Yes

TCON

(LCD Panel)

A Board

Any flashes

seen on screen?

Yes

TCON

(LCD Panel)

A Board

FIGURE 5-1. NO VIDEO FLOWCHART

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 31

Page 37

SECTION 5 - FLOW CHARTS AND DIAGRAMS

Video Distortion

Is distortion

across entire

screen?

Any horizontal

lines?

Any single or

isolated vertical

lines?

Yes

Improper of

missing colors?

Yes

A Board

LCD Panel

Vertical lines

or bars?

Yes

Lines move when wide-

mode

changed?

TCON

(LCD Panel)

Yes

A Board

More than 1

vertical band?

Yes

TCON

(LCD Panel)

FIGURE 5-2. VIDEO DISTORTION FLOWCHART

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 32

Page 38

SECTION 5 - FLOW CHARTS AND DIAGRAMS

POWER SUPPLY INFORMATION

No Power

Does red standby

LED on front panel

light?

Yes

Press power

button while

monitoring pin 3 of

CN6401 on power

supply board

High (3.3V)

on pin 3?

Yes

G13 board (32") G14 board (40")

G3 board (46")

Is standby LED

blinking?

G13 board (32") G14 board (40")

G3 board (46")

Yes

See protection

flowchart

G13 board (32") G14 board (40")

G3 board (46")

FIGURE 5-3. POWER SUPPLY FLOWCHART

High (3.3V)

on pin 2?

Yes

A Board

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 33

Page 39

SECTION 5 - FLOW CHARTS AND DIAGRAMS

PROTECTION INFORMATION

Protect

Shutdown.

Standby LED

Blinking

Yes

LCD Panel

Yes

G13 board (32") G14 board (40")

G3 board (46")

A Board3X

Yes

“SONY” logo

appears before

shutdown?

Yes

Immediately

A Board

G13 board (32") G14 board (40")

G3 board (46")

After a While

Check room

temperature and

ventilation around

unit

LCD Panel

FIGURE 5-4. PROTECTION SHUTDOWN FLOWCHART

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 34

Page 40

SECTION 5 - FLOW CHARTS AND DIAGRAMS

CN6402

UNREG24V

GND

BL_ERR

BL-ON

N/C

DIMMER

INVERTER

AC IN (N)

AC IN (H)

1~5

6~10

G13 (32")

6, 7

8, 9

CN6401

STBY3.3V

AC_OFF_DET

POWER_ON

AUDIO_12V

AUDIO_GND

REG12V_GND

REG12V

BL_ERR

BL_ON

DIMMER

N/C

TCON_12V

TCON_ON

CN202

REG 12V

GND

AUDIO_12V

N/C

DIMMER

BL_ERR

BL_ON

TCON_12V

AC_FF_DET

TCON_ON

STBY 3.3V

N/C

POWER_ON

1,3

2, 4, 6

G14 (40") G3 (46")

FIGURE 5-5. POWER AND CONTROL BLOCK DIAGRAM

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 35

Page 41

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

TABLE-TOP STAND ASSEMBLY REMOVAL

FOR SERIAL RANGES LISTED BELOW: KDL-32BX320 6000001 - 7400000 KDL-32BX321 7100001 - 7400000 KDL-32BX420 6000001 - 7200000 KDL-32BX421 6000001 - 7200000 KDL-40BX420 6000001 - 7400000 KDL-40BX421 6000001 - 7200000 KDL-46BX420 6000001 - 7400000 KDL-46BX421 6000001 - 7100000

Remove 4 screws from Table-Top Stand Assembly

Lift up TV set to detach from Table-Top Stand Assembly

Components not identied by a part number or

description are not stocked because they are seldom required for routine service.

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

The component parts of an assembly are indicated by the reference numbers in the far right column of the parts list and within the dotted lines of the diagram.

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

Items marked with an asterisk are not stocked since

they are seldom required for routine service. Expect some delay when ordering these components.

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

Gently place the TV set face down onto a soft cloth

Soft Cloth

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

1 X-2581-429-1 BASE (M3B) ASSEMBLY (FOR US/CND) (KDL-32BX320/32BX420/32BX421 ONLY) 1 X-2546-085-2 BASE (M5B) ASSEMBLY (FOR MX) (KDL-32BX321/32BX421 ONLY) 1 X-2581-430-1 BASE (ML3B) ASSEMBLY (KDL-40BX420/40BX421 ONLY) 1 X-2581-431-1 STAND ASSEMBLY (L3B) (KDL-46BX420/46BX421 ONLY)

2 4-166-867-01 COVER, NECK (M3B) (KDL-32BX320/32BX321/32BX420/32BX421 ONLY) 2 4-166-871-01 COVER, NECK (ML3B) (KDL-40BX420/40BX421/46BX420/46BX421 ONLY)

3 4-166-864-01 NECK (M3B) (KDL-32BX320/32BX321/32BX420/32BX421 ONLY) 3 4-166-868-01 NECK (ML3B) (KDL-40BX420/40BX421/46BX420/46BX421 ONLY)

4 2-580-608-01 SCREW, +PSW M5X16 (SCREWS TO ATTACH TABLE-TOP STAND TO LCD TV For product protection and safety reasons, Sony strongly recommends that you use the screws provided with the TV

CAUTION: These screws cannot be used to secure the TV to the Wall Mount Brackets

2-580-608-01 SCREW, +PSW M5X16

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 36

Page 42

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

FOR SERIAL RANGES LISTED BELOW: KDL-32BX320 3000001 - 3800000 KDL-32BX320 5000001 - 5500000 KDL-32BX321 5000001 - 5500000 KDL-32BX420 3000001 - 3800000 KDL-32BX420 5000001 - 5300000 KDL-32BX421 3000001 - 3800000 KDL-32BX421 5000001 - 5300000 KDL-40BX420 3000001 - 3800000 KDL-40BX420 5000001 - 5500000 KDL-40BX421 3000001 - 3800000 KDL-40BX421 5000001 - 5300000

Remove 4 screws from Table-Top Stand Assembly

Lift up TV set to detach from Table-Top Stand Assembly

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

Gently place the TV set face down onto a soft cloth

Soft Cloth

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

51 X-2581-429-1 BASE (M3B) ASSEMBLY (FOR US/CND) (KDL-32BX320/32BX420/32BX421 ONLY) 51 X-2580-731-1 BASE (M5B) ASSEMBLY (FOR MX) (KDL-32BX321/32BX421 ONLY) 51 X-2581-430-1 BASE (ML3B) ASSEMBLY (KDL-40BX420/40BX421 ONLY) 51 X-2580-732-1 BASE (ML5B) ASSEMBLY (KDL-40BX421 ONLY)

52 4-166-866-01 COVER, STAND (M3B) (FOR US/CND) [51] (KDL-32BX320/32BX420/32BX421 ONLY) 52 4-273-641-01 COVER, STAND (M5B) (FOR MX) [51] (KDL-32BX321/32BX421 ONLY) 52 4-166-870-01 COVER, STAND (ML3B) [51] (KDL-40BX420/40BX421 ONLY) 52 4-266-672-01 COVER, STAND (ML5B) [51] (KDL-40BX421 ONLY)

53 4-166-867-01 COVER, NECK (M3B) (KDL-32BX320/32BX321/32BX420/32BX421 ONLY) 53 4-166-871-01 COVER, NECK (ML3B) (KDL-40BX420/40BX421 ONLY)

54 4-166-864-01 NECK (M3B) (KDL-32BX320/32BX321/32BX420/32BX421 ONLY) 54 4-166-868-01 NECK (ML3B) (KDL-40BX420/40BX421 ONLY)

55 2-580-608-01 SCREW, +PSW M5X16 (SCREWS TO ATTACH TABLE-TOP STAND TO LCD TV) For product protection and safety reasons, Sony strongly recommends that you use the screws provided with the TV

CAUTION: These screws cannot be used to secure the TV to the Wall Mount Brackets

2-580-608-01 SCREW, +PSW M5X16

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 37

Page 43

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

REAR COVER AND SPEAKERS REMOVAL

KDL-32BX320/32BX321/32BX420/32BX421 ONLY

FOR SERIAL RANGES LISTED BELOW: KDL-32BX320 6000001 - 7400000 KDL-32BX321 7100001 - 7400000 KDL-32BX420 6000001 - 7200000 KDL-32BX421 6000001 - 7200000

Remove 9 screws from Rear Cover

Remove 1 screw from Side Bracket position

Remove 1 screw from Terminal Area position

Remove 2 screws from Rear Cover

Gently lift up Rear Cover from bottom side to detach from Bezel

Lift up AC Power Cord and disconnect 1 connector from G13 Board

to detach from Under Cover

Remove 1 screw from Under Cover

Remove 1 screw from Left Speaker Bracket to detach

from Bezel

Remove 2 screws from Speaker to detach from

Left Speaker Bracket

Release clips and disconnect 1 connector

to detach H Board from LED Guide

Remove 1 screw from Right Speaker

Brackets to detach from Bezel

Remove 2 screws from Speaker

to detach from Right Speaker Bracket

Lift up Switch Unit and disconnect

1 connector to detach from Bezel

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

109

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

101 4-270-691-11 REAR COVER (GW32) (KDL-32BX320/32BX321/32BX420 ONLY) (KDL-32BX421 FOR MX ONLY) 101 4-270-691-01 REAR COVER (GW32) (KDL-32BX421 FOR US/CND ONLY) 102 4-266-658-01 BRACKET, VESA (M6) (GW) [101]

103 1-838-980-11 POWER SUPPLY CORD (WITH CORE) (KDL-32BX320/32BX321/32BX420/32BX421 ONLY 104 4-264-311-01 COVER, UNDER (GW26) (KDL-32BX320/32BX321/32BX420/32BX421 ONLY)

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

107

105

107

106

104

103

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

105 4-264-313-01 BRACKET, SP (GW32L) (KDL-32BX320/32BX321/32BX420/32BX421 ONLY) 106 4-264-312-01 BRACKET, SP (GW32R) (KDL-32BX320/32BX321/32BX420/32BX421 ONLY)

107 1-858-572-11 LOUDSPEAKER (4.0X10.0CM) 108 1-857-898-21 H BOARD, MOUNTED 109 1-489-627-11 SWITCH UNIT

7-685-647-79 SCREW, +BVTP2 3X12 7-685-648-79 SCREW, +BVTP 3X12 TYPE2 IT-3 2-580-640-01 SCREW, +BVTP2 4X16 2-580-595-01 SCREW, +PSW M3X12 2-580-600-01 SCREW, +PSW M4X8

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

108

102

101

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 38

Page 44

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

Remove 9 screws from Rear Cover

Remove 1 screw from Side Bracket position

Remove 1 screw from Terminal Area position

Remove 2 screws from Rear Cover

Gently lift up Rear Cover from bottom side to detach from Bezel

Lift up AC Power Cord and disconnect 1 connector from G13 Board

to detach from Under Cover

Remove 1 screw from Under Cover

Remove 1 screw from Left Speaker Bracket to detach

from Bezel

Remove 2 screws from Speaker to detach from

Left Speaker Bracket

Release clips and disconnect 1 connector

to detach H Board from LED Guide

Remove 1 screw from Right Speaker

Brackets to detach from Bezel

Remove 2 screws from Speaker

to detach from Right Speaker Bracket

Lift up Switch Unit and disconnect

1 connector to detach from Bezel

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

159

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

157

155

157

156

154

153

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

158

152

151

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

151 4-288-558-11 REAR COVER (GF32) (KDL-32BX320/32BX321/32BX420 ONLY) (KDL-32BX421 FOR MX ONLY) 151 4-288-558-01 REAR COVER (GF32) (KDL-32BX421 FOR US/CND ONLY) 152 4-266-658-01 BRACKET, VESA (M6) (GW) [151]

153 1-838-980-11 POWER SUPPLY CORD (WITH CORE) (KDL-32BX320/32BX321/32BX420/32BX421 ONLY) 154 4-264-311-01 COVER, UNDER (GW26) (KDL-32BX320/32BX321/32BX420/32BX421 ONLY)

155 4-264-313-01 BRACKET, SP (GW32L) (KDL-32BX320/32BX321/32BX420/32BX421 ONLY) 156 4-264-312-01 BRACKET, SP (GW32R) (KDL-32BX320/32BX321/32BX420/32BX421 ONLY)

157 1-858-572-11 LOUDSPEAKER (4.0X10.0CM) 158 1-895-019-11 H BOARD, MOUNTED 159 1-489-627-11 SWITCH UNIT

7-685-647-79 SCREW, +BVTP2 3X12 7-685-648-79 SCREW, +BVTP 3X12 TYPE2 IT-3 2-580-640-01 SCREW, +BVTP2 4X16 2-580-595-01 SCREW, +PSW M3X12 2-580-600-01 SCREW, +PSW M4X8

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 39

Page 45

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

KDL-40BX420/40BX421 ONLY

FOR SERIAL RANGES LISTED BELOW: KDL-40BX420 6000001 - 7400000 KDL-40BX421 6000001 - 7200000

Remove 7 screws from Rear Cover

Remove 1 screw from Side Bracket position

Remove 1 screw from Terminal Area position

Remove 4 screws from Rear Cover

Gently lift up Rear Cover from bottom side to detach from Bezel

Lift up AC Power Cord and disconnect 1 connector from G14 Board

to detach from Under Cover

Remove 1 screw from Under Cover

Remove 1 screw from Left Speaker Bracket to detach from Bezel

Remove 2 screws from Speaker to detach from Left Speaker Bracket

Release clips and disconnect 1 connector to detach H Board

from LED Guide

Remove 1 screw from Right Speaker Brackets to detach

from Bezel

Remove 2 screws from Speaker to detach from

Right Speaker Bracket

Lift up Switch Unit and disconnect

1 connector to detach from Bezel

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

209

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

207

205

207

206

204

203

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

208

202

201

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

201 4-270-695-11 REAR COVER (GW40) (KDL-40BX420 ONLY) (KDL-40BX421 FOR MX ONLY) 201 4-270-695-01 REAR COVER (GW40) (KDL-40BX421 FOR US/CND ONLY) 202 4-266-658-01 BRACKET, VESA (M6) (GW) [201]

203 1-838-981-11 POWER SUPPLY CORD (WITH CORE) (KDL-40BX420/40BX421 ONLY) 204 4-264-314-01 COVER, UNDER (GW37) (KDL-40BX420/40BX421 ONLY)

205 4-264-316-01 BRACKET, SP (GW40L) (KDL-40BX420/40BX421 ONLY) 206 4-264-315-01 BRACKET, SP (GW40R) (KDL-40BX420/40BX421 ONLY)

207 1-858-572-11 LOUDSPEAKER (4.0X10.0CM) 208 1-857-898-21 H BOARD, MOUNTED 209 1-489-627-11 SWITCH UNIT

7-685-647-79 SCREW, +BVTP2 3X12 7-685-648-79 SCREW, +BVTP 3X12 TYPE2 IT-3 2-580-640-01 SCREW, +BVTP2 4X16 4-159-298-01 SCREW, +PSW M4X10

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 40

Page 46

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

FOR SERIAL RANGES LISTED BELOW: KDL-40BX420 3000001 - 3800000 KDL-40BX420 5000001 - 5500000 KDL-40BX421 3000001 - 3800000 KDL-40BX421 5000001 - 5300000

Remove 7 screws from Rear Cover

Remove 1 screw from Side Bracket position

Remove 1 screw from Terminal Area position

Remove 4 screws from Rear Cover

Gently lift up Rear Cover from bottom side to detach from Bezel

Lift up AC Power Cord and disconnect 1 connector from G14 Board

to detach from Under Cover

Remove 1 screw from Under Cover

Remove 1 screw from Left Speaker Bracket to detach from Bezel

Remove 2 screws from Speaker to detach from Left Speaker Bracket

Release clips and disconnect 1 connector to detach H Board

from LED Guide

Remove 1 screw from Right Speaker Brackets to detach

from Bezel

Remove 2 screws from Speaker to detach from

Right Speaker Bracket

Lift up Switch Unit and disconnect

1 connector to detach from Bezel

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

259

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

257

255

257

256

254

253

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

258

252

251

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

251 4-288-560-11 REAR COVER (GF40) (KDL-40BX420 ONLY) (KDL-40BX421 FOR MX ONLY) 251 4-288-560-01 REAR COVER (GF40) (KDL-40BX421 FOR US/CND ONLY) 252 4-266-658-01 BRACKET, VESA (M6) (GW) [251]

253 1-838-981-11 POWER SUPPLY CORD (WITH CORE) (KDL-40BX420/40BX421 ONLY) 254 4-264-314-01 COVER, UNDER (GW37) (KDL-40BX420/40BX421 ONLY)

255 4-264-316-01 BRACKET, SP (GW40L) (KDL-40BX420/40BX421 ONLY) 256 4-264-315-01 BRACKET, SP (GW40R) (KDL-40BX420/40BX421 ONLY)

257 1-858-572-11 LOUDSPEAKER (4.0X10.0CM) 258 1-895-019-11 H BOARD, MOUNTED 259 1-489-627-11 SWITCH UNIT

7-685-647-79 SCREW, +BVTP2 3X12 7-685-648-79 SCREW, +BVTP 3X12 TYPE2 IT-3 2-580-640-01 SCREW, +BVTP2 4X16 4-159-298-01 SCREW, +PSW M4X10

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 41

Page 47

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

KDL-46BX420/46BX421 ONLY

Remove 8 screws from Rear Cover

Remove 1 screw from Side Bracket position

Remove 1 screw from Terminal Area position

Remove 4 screws from Rear Cover

Gently lift up Rear Cover from bottom side to detach from Bezel

Lift up AC Power Cord and disconnect 1 connector from G3 Board to detach

from Under Cover

Remove 1 screw from Under Cover

Remove 1 screw from Left Speaker Bracket to detach from Bezel

Remove 2 screws from Speaker to detach from Left Speaker Bracket

Release clips and disconnect 1 connector to detach H Board from LED Guide

Remove 1 screw from Right Speaker Brackets to detach from Bezel

Remove 2 screws from Speaker to detach from Right Speaker Bracket

Lift up Switch Unit and disconnect 1 connector to detach from Bezel

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

309

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

307

305

307

306

304

303

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

308

302

301

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

301 4-270-697-11 REAR COVER (GW46) (KDL-46BX420 ONLY) 301 4-270-697-01 REAR COVER (GW46) (KDL-46BX421 ONLY) 302 4-266-658-01 BRACKET, VESA (M6) (GW) [301]

303 1-838-981-11 POWER SUPPLY CORD (WITH CORE) (KDL-46BX420/46BX421 ONLY) 304 4-266-609-01 COVER, UNDER (GW46) (KDL-46BX420/46BX421 ONLY)

305 4-266-611-01 BRACKET, SP (GW46L) (KDL-46BX420/46BX421 ONLY) 306 4-266-610-01 BRACKET, SP (GW46R) (KDL-46BX420/46BX421 ONLY)

307 1-858-572-11 LOUDSPEAKER (4.0X10.0CM) 308 1-857-898-21 H BOARD, MOUNTED 309 1-489-627-11 SWITCH UNIT

7-685-647-79 SCREW, +BVTP2 3X12 7-685-648-79 SCREW, +BVTP 3X12 TYPE2 IT-3 2-580-640-01 SCREW, +BVTP2 4X16 4-159-298-01 SCREW, +PSW M4X10

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 42

Page 48

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

A (MAIN) BOARD, G13/G14/G3 (POWER SUPPLY) BOARD AND LCD PANEL REMOVAL

KDL-32BX320/32BX321 ONLY

FOR SERIAL RANGES LISTED BELOW: KDL-32BX320 6000001 - 7400000 KDL-32BX321 7100001 - 7400000

Remove 4 screws and disconnect 5 connectors from A Board to detach from MB Brackets

Release 2 clips and slide-out Side Bracket to detach from A Board

Remove 4 screws and disconnect 3 connectors from G13 Board to detach from PSU

Brackets

Remove 2 screws from MB Brackets to detach from Bezel

Remove 2 screws from MB Brackets to detach from PSU Bracket Left

Remove 2 screws from Vesa Brackets to detach from PSU Brackets

Remove 4 screws from PSU Brackets to detach from

LCD Panel and Top Frame

Remove 2 screws from Bottom Frame to detach from

LCD Panel

Remove 2 screws from Top Frame to detach from

LCD Panel

Slide-out 2 Panel Brackets to detach from Bezel

Carefully lift up LCD Panel to remove from Bezel

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

351

352

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

353

354

355

357

356

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

351 4-270-690-11 BEZEL (GW32) (KDL-32BX320/32BX321 ONLY) 352 4-264-319-01 SUPPORT, PANEL(C) (GW) (KDL-32BX320/32BX321 ONLY)

353 NA LCD PANEL FOR ALL LCD PANEL AND TCON BOARD PART NUMBER INFORMATION REFER TO THE LCD PANELS SERVICE MANUAL 354 4-264-318-01 BRACKET, SIDE (US) (GW)

355 1-857-903-21 A BOARD, COMPLETE (KDL-32BX320/32BX321 ONLY) AFTER REPLACING THE MAIN BOARD OR THE LCD PANEL,

YOU MUST UPDATE THE SOFTWARE TO THE LATEST VERSION.

356 1-474-297-12 G13 BOARD, COMPLETE (KDL-32BX320/32BX321 ONLY) * 357 4-266-636-01 BRACKET, VESA (GW32) (KDL-32BX320/32BX321 ONLY)

2-580-640-01 SCREW, +BVTP2 4X16 2-580-592-01 SCREW, +PSW M3X8 2-580-599-01 SCREW, +PSW M4X6

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 43

Page 49

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

FOR SERIAL RANGES LISTED BELOW: KDL-32BX320 3000001 - 3800000 KDL-32BX320 5000001 - 5500000 KDL-32BX321 5000001 - 5500000

Remove 4 screws and disconnect 5 connectors from A Board to detach from PSU and MB

Brackets

Release 2 clips and slide-out Side Bracket to detach from A Board

Remove 4 screws and disconnect 3 connectors from G13 Board to detach from PSU Brackets

Remove 2 screws from MB Bracket to detach from LCD Panel

Remove 1 screw from PSU Bracket-Left to detach from LCD Panel

Remove 1 screw from PSU Bracket-Left to detach from Bottom Frame

Remove 2 screws from PSU Bracket-Right to detach from Bottom Frame and LCD Panel

Remove 2 screws from Vesa Brackets to detach from PSU Brackets

Remove 2 screws from Bottom Frame to detach from LCD Panel

Slide-out 2 Panel Brackets to detach from Bezel

Carefully lift up LCD Panel to remove from Bezel

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

401

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

402

403

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

PSU

PSU Bracket Right

Bracket Left

407

MB Bracket

404

405

Bottom Frame

406

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

401 4-288-557-01 BEZEL (GF32) (KDL-32BX320/32BX321 ONLY)

402 4-264-319-01 SUPPORT, PANEL(C) (GW) (KDL-32BX320/32BX321 ONLY)

403 NA LCD PANEL FOR ALL LCD PANEL AND TCON BOARD PART NUMBER INFORMATION REFER TO THE LCD PANELS SERVICE MANUAL 404 4-264-318-01 BRACKET, SIDE (US) (GW)

405 1-895-018-11 A BOARD, COMPLETE (KDL-32BX320/32BX321 ONLY) AFTER REPLACING THE MAIN BOARD OR THE LCD PANEL,

YOU MUST UPDATE THE SOFTWARE TO THE LATEST VERSION.

406 1-474-297-12 G13 BOARD, COMPLETE (KDL-32BX320/32BX321 ONLY) 407 4-266-636-01 BRACKET, VESA (GW32) (KDL-32BX320/32BX321 ONLY)

2-580-600-01 SCREW, +PSW M4X8 2-580-592-01 SCREW, +PSW M3X8

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 44

Page 50

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

KDL-32BX420/32BX421 ONLY

FOR SERIAL RANGES LISTED BELOW: KDL-32BX420 6000001 - 7200000 KDL-32BX421 6000001 - 7200000

Remove 4 screws and disconnect 5 connectors from A Board to detach from LCD Panel

Release 2 clips and slide-out Side Bracket to detach from A Board

Remove 4 screws and disconnect 3 connectors from G13 Board

Remove 2 screws from MB Bracket to detach from LCD Panel

Remove 2 screws from Vesa Brackets to detach from Bottom Frame

Remove 2 screws from Bottom Frame to detach from LCD Panel

Slide-out 2 Panel Brackets to detach from Bezel

Carefully lift up LCD Panel to remove from Bezel

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

452

451

453

454

455

A Board Bracket

456

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

451 4-270-690-11 BEZEL (GW32) (KDL-32BX420/32BX421 ONLY) 452 4-165-056-01 PANEL SUPPORT (B) (KDL-32BX420/32BX421 ONLY)

453 NA LCD PANEL FOR ALL LCD PANEL AND TCON BOARD PART NUMBER INFORMATION REFER TO THE LCD PANELS SERVICE MANUAL 454 4-264-318-01 BRACKET, SIDE (US) (GW)

455 1-857-903-31 A BOARD, COMPLETE (KDL-32BX420 ONLY) (KDL-32BX421 FOR MX ONLY) AFTER REPLACING THE MAIN BOARD OR THE LCD PANEL,

YOU MUST UPDATE THE SOFTWARE TO THE LATEST VERSION.

455 1-857-903-41 A BOARD, COMPLETE (KDL-32BX421 FOR US/CND ONLY) AFTER REPLACING THE MAIN BOARD OR THE LCD PANEL,

YOU MUST UPDATE THE SOFTWARE TO THE LATEST VERSION.

456 1-474-297-12 G13 BOARD, COMPLETE (KDL-32BX420/32BX421 ONLY) * 457 4-266-636-01 BRACKET, VESA (GW32) (KDL-32BX420/32BX421 ONLY)

2-580-592-01 SCREW, +PSW M3X8 2-580-599-01 SCREW, +PSW M4X6

457

Bottom Frame

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 45

Page 51

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

FOR SERIAL RANGES LISTED BELOW: KDL-32BX420 3000001 - 3800000 KDL-32BX420 5000001 - 5300000 KDL-32BX421 3000001 - 3800000 KDL-32BX421 5000001 - 5300000

Remove 4 screws and disconnect 5 connectors from A Board to detach from LCD Panel

Release 2 clips and slide-out Side Bracket to detach from A Board

Remove 4 screws and disconnect 3 connectors from G13 Board

Remove 2 screws from MB Bracket to detach from LCD Panel

Remove 2 screws from Vesa Brackets to detach from Bottom Frame

Remove 2 screws from Bottom Frame to detach from LCD Panel

Slide-out 2 Panel Brackets to detach from Bezel

Carefully lift up LCD Panel to remove from Bezel

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

502

501

503

504

505

A Board Bracket

506

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

501 4-288-557-01 BEZEL (GF32)

(KDL-32BX420/32BX421 ONLY) 502 4-165-056-01 PANEL SUPPORT (B) (KDL-32BX420/32BX421 ONLY)

503 NA LCD PANEL FOR ALL LCD PANEL AND TCON BOARD PART NUMBER INFORMATION REFER TO THE LCD PANELS SERVICE MANUAL 504 4-264-318-01 BRACKET, SIDE (US) (GW)

505 1-895-018-21 A BOARD, COMPLETE (KDL-32BX420 ONLY) (KDL-32BX421 FOR MX ONLY) AFTER REPLACING THE MAIN BOARD OR THE LCD PANEL,

YOU MUST UPDATE THE SOFTWARE TO THE LATEST VERSION.

505 1-895-018-31 A BOARD, COMPLETE (KDL-32BX421 FOR US/CND ONLY) AFTER REPLACING THE MAIN BOARD OR THE LCD PANEL,

YOU MUST UPDATE THE SOFTWARE TO THE LATEST VERSION.

506 1-474-297-12 G13 BOARD, COMPLETE (KDL-32BX420/32BX421 ONLY) * 507 4-266-636-01 BRACKET, VESA (GW32) (KDL-32BX420/32BX421 ONLY)

2-580-592-01 SCREW, +PSW M3X8 2-580-599-01 SCREW, +PSW M4X6

507

Bottom Frame

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 46

Page 52

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

KDL-40BX420/40BX421 ONLY

FOR SERIAL RANGES LISTED BELOW: KDL-40BX420 6000001 - 7400000 KDL-40BX421 6000001 - 7200000

Remove 4 screws and disconnect 5 connectors from A Board to detach from LCD Panel

Release 2 clips and slide-out Side Bracket to detach from A Board

Remove 5 screws and disconnect 3 connectors from G14 Board

Remove 2 screws from MB Bracket to detach from LCD Panel

Remove 3 screws from Bottom Frame to detach from LCD Panel

Remove 2 screws from LCD Panel to detach from Bezel

Slide-out 2 Panel Brackets to detach from Bezel

Carefully lift up LCD Panel to remove from Bezel

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

552

551

553

554

555

A Board Bracket

556

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

551 4-270-694-11 BEZEL (GW40) (KDL-40BX420/40BX421 ONLY) 552 4-163-795-01 PANEL SUPPORT (A) (KDL-40BX420/40BX421 ONLY)

553 NA LCD PANEL FOR ALL LCD PANEL AND TCON BOARD PART NUMBER INFORMATION REFER TO THE LCD PANELS SERVICE MANUAL 554 4-264-318-01 BRACKET, SIDE (US) (GW)

555 1-857-903-51 A BOARD, COMPLETE (KDL-40BX420 ONLY) (KDL-40BX421 FOR MX ONLY) AFTER REPLACING THE MAIN BOARD OR THE LCD PANEL,

YOU MUST UPDATE THE SOFTWARE TO THE LATEST VERSION.

555 1-857-903-61 A BOARD, COMPLETE (KDL-40BX421 FOR US/CND ONLY) AFTER REPLACING THE MAIN BOARD OR THE LCD PANEL,

YOU MUST UPDATE THE SOFTWARE TO THE LATEST VERSION.

556 1-474-310-11 G14 BOARD, COMPLETE (KDL-40BX420/40BX421 ONLY)

2-580-640-01 SCREW, +BVTP2 4X16 2-580-600-01 SCREW, +PSW M4X8 2-580-592-01 SCREW, +PSW M3X8

Bottom Frame

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 47

Page 53

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

FOR SERIAL RANGES LISTED BELOW: KDL-40BX420 3000001 - 3800000 KDL-40BX420 5000001 - 5500000 KDL-40BX421 3000001 - 3800000 KDL-40BX421 5000001 - 5300000

Remove 4 screws and disconnect 5 connectors from A Board to detach from LCD Panel

Release 2 clips and slide-out Side Bracket to detach from A Board

Remove 5 screws and disconnect 3 connectors from G14 Board

Remove 2 screws from MB Bracket to detach from LCD Panel

Remove 3 screws from Bottom Frame to detach from LCD Panel

Remove 2 screws from LCD Panel to detach from Bezel

Slide-out 2 Panel Brackets to detach from Bezel

Carefully lift up LCD Panel to remove from Bezel

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

602

601

603

604

605

A Board Bracket

606

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

601 4-288-559-01 BEZEL (GF40) (KDL-40BX420/40BX421 ONLY) 602 4-163-795-01 PANEL SUPPORT (A) (KDL-40BX420/40BX421 ONLY)

603 NA LCD PANEL FOR ALL LCD PANEL AND TCON BOARD PART NUMBER INFORMATION REFER TO THE LCD PANELS SERVICE MANUAL 604 4-264-318-01 BRACKET, SIDE (US) (GW)

605 1-895-018-21 A BOARD, COMPLETE (KDL-40BX420 ONLY) (KDL-40BX421 FOR MX ONLY) AFTER REPLACING THE MAIN BOARD OR THE LCD PANEL,

YOU MUST UPDATE THE SOFTWARE TO THE LATEST VERSION.

605 1-895-018-31 A BOARD, COMPLETE (KDL-40BX421 FOR US/CND ONLY) AFTER REPLACING THE MAIN BOARD OR THE LCD PANEL,

YOU MUST UPDATE THE SOFTWARE TO THE LATEST VERSION.

606 1-474-310-11 G14 BOARD, COMPLETE (KDL-40BX420/40BX421 ONLY)

2-580-640-01 SCREW, +BVTP2 4X16 2-580-600-01 SCREW, +PSW M4X8 2-580-592-01 SCREW, +PSW M3X8

Bottom Frame

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 48

Page 54

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

KDL-46BX420/46BX421 ONLY

Remove 4 screws and disconnect 5 connectors from A Board to detach from LCD Panel

Release 2 clips and slide-out Side Bracket to detach from A Board

Remove 5 screws and disconnect 3 connectors from G3 Board

Remove 2 screws from MB Bracket to detach from LCD Panel

Remove 2 screws from Bottom Frame to detach from LCD Panel

Remove 3 screws from LCD Panel to detach from Bezel

Slide-out 2 Panel Brackets to detach from Bezel

Carefully lift up LCD Panel to remove from Bezel

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

652

651

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

653

654

655

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.

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 to proper ventilation.

provided on the package.

A Board Bracket

656

Bottom Frame

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

651 4-270-696-11 BEZEL (GW46) (KDL-46BX420/46BX421 ONLY) 652 4-163-795-01 PANEL SUPPORT (A) (KDL-46BX420/46BX421 ONLY)

653 NA LCD PANEL FOR ALL LCD PANEL AND TCON BOARD PART NUMBER INFORMATION REFER TO THE LCD PANELS SERVICE MANUAL 654 4-264-318-01 BRACKET, SIDE (US) (GW)

655 1-857-903-51 A BOARD, COMPLETE (KDL-46BX421 FOR MX ONLY) AFTER REPLACING THE MAIN BOARD OR THE LCD PANEL,

YOU MUST UPDATE THE SOFTWARE TO THE LATEST VERSION.

655 1-857-903-61 A BOARD, COMPLETE (KDL-46BX421 FOR US/CND ONLY) AFTER REPLACING THE MAIN BOARD OR THE LCD PANEL,

YOU MUST UPDATE THE SOFTWARE TO THE LATEST VERSION.

656 1-474-296-11 G3 BOARD, COMPLETE (KDL-46BX420/46BX421 ONLY)

2-580-640-01 SCREW, +BVTP2 4X16 2-580-592-01 SCREW, +PSW M3X8 4-159-298-01 SCREW, +PSW M4X10

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 49

Page 55

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

KDL-32BX320 (SERIAL NO. RANGE 6000001-7400000)/32BX321 (SERIAL NO. RANGE 7100000-7400000)

SWITCH UNIT

SCREW LEGEND

P/N DESCRIPTION REMARKS TOTAL

▲ 2-580-608-01 SCREW, +PSW M5X16 TABLE-TOP STAND(4) 4 △ 7-685-647-79 SCREW, +BVTP2 3X12 SPKR-L(2), SPKR-R(2) 4

■ 7-685-648-79 SCREW, +BVTP 3X12 TYPE2 IT-3 RC to TRMNL AREA(1), RC to SIDE BRKT(1) 2 □ 2-580-640-01 SCREW, +BVTP2 4X16 RC(9), SPKR BRKT-L(1), SPKR BRKT-R(1), MB BRKTS to BEZ(2) 13

◆ 2-580-595-01 SCREW, +PSW M3X12 RC to PNL TOP CNTR(2) 2 ◇ 2-580-600-01 SCREW, +PSW M4X8 UNDR CVR(1) 1

● 2-580-592-01 SCREW, +PSW M3X8 A BOARD(4), G13 BOARD(4) 8 ○ 2-580-599-01 SCREW, +PSW M4X6 VESA BRKTS(2), BTM FRM(2), TOP FRM(2), PSU BRKTS(4), MB BRKTS to PSU BRKT-L(2) 12 ★ 4-159-298-01 SCREW, +PSW M4X10 NOT IN THIS MODEL 0

KDL-32BX320 (SERIAL NO. RANGE 3000001-3800000 and 5000001-5500000)/32BX321 (SERIAL NO. RANGE 5000001-5500000)

P/N DESCRIPTION REMARKS TOTAL

▲ 2-580-608-01 SCREW, +PSW M5X16 TABLE-TOP STAND(4) 4 △ 7-685-647-79 SCREW, +BVTP2 3X12 SPKR-L(2), SPKR-R(2) 4

■ 7-685-648-79 SCREW, +BVTP 3X12 TYPE2 IT-3 RC to TRMNL AREA(1), RC to SIDE BRKT(1) 2 □ 2-580-640-01 SCREW, +BVTP2 4X16 RC(9), SPKR BRKT-L(1), SPKR BRKT-R(1) 11

◆ 2-580-595-01 SCREW, +PSW M3X12 RC to PNL TOP CNTR(2) 2 ◇ 2-580-600-01 SCREW, +PSW M4X8 UNDR CVR(1), VESA BRKTS(2), BTM FRM(2), PSU BRKT-R(2), PSU BRKT-L to BTM FRM(1) 8

● 2-580-592-01 SCREW, +PSW M3X8 A BOARD(4), G13 BOARD(4), PSU BRKT-L to PNL(1), MB BRKT to PNL(2) 11 ○ 2-580-599-01 SCREW, +PSW M4X6 NOT IN THIS MODEL 0 ★ 4-159-298-01 SCREW, +PSW M4X10 NOT IN THIS MODEL 0

KDL-32BX420/32BX421 (ALL SERIAL NUMBER RANGES)

P/N DESCRIPTION REMARKS TOTAL

▲ 2-580-608-01 SCREW, +PSW M5X16 TABLE-TOP STAND(4) 4 △ 7-685-647-79 SCREW, +BVTP2 3X12 SPKR-L(2), SPKR-R(2) 4

■ 7-685-648-79 SCREW, +BVTP 3X12 TYPE2 IT-3 RC to TRMNL AREA(1), RC to SIDE BRKT(1) 2 □ 2-580-640-01 SCREW, +BVTP2 4X16 RC(9), SPKR BRKT-L(1), SPKR BRKT-R(1) 11

◆ 2-580-595-01 SCREW, +PSW M3X12 RC to PNL TOP CNTR(2) 2 ◇ 2-580-600-01 SCREW, +PSW M4X8 UNDR CVR(1) 1

●

2-580-592-01 SCREW, +PSW M3X8 A BOARD(4), G13 BOARD(4), MB BRKT to PANEL(2) 10

○ 2-580-599-01 SCREW, +PSW M4X6 VESA BRKTS(2), BTM FRM(2) 4 ★ 4-159-298-01 SCREW, +PSW M4X10 NOT IN THIS MODEL 0

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

CONNECTORS

KDL-32BX320/32BX321/32BX420/32BX421 ONLY

FOR SERIAL RANGES LISTED BELOW: KDL-32BX320 6000001 - 7400000 KDL-32BX321 7100001 - 7400000 KDL-32BX420 6000001 - 7200000 KDL-32BX421 6000001 - 7200000

TCON

701

INV

G13

KDL-40BX420/40BX421 (ALL SERIAL NUMBER RANGES)

P/N DESCRIPTION REMARKS TOTAL

▲ 2-580-608-01 SCREW, +PSW M5X16 TABLE-TOP STAND(4) 4 △ 7-685-647-79 SCREW, +BVTP2 3X12 SPKR-L(2), SPKR-R(2) 4

■ 7-685-648-79 SCREW, +BVTP 3X12 TYPE2 IT-3 RC to TRMNL AREA(1), RC to SIDE BRKT(1) 2 □ 2-580-640-01 SCREW, +BVTP2 4X16 RC(7), SPKR BRKT-L(1), SPKR BRKT-R(1), PNL to BEZ(2) 11

◆ 2-580-595-01 SCREW, +PSW M3X12 NOT IN THIS MODEL 0 ◇ 2-580-600-01 SCREW, +PSW M4X8 BTM FRM(3) 3

● 2-580-592-01 SCREW, +PSW M3X8 A BOARD(4), G14 BOARD(5), MB BRKT to PNL(2) 11 ○ 2-580-599-01 SCREW, +PSW M4X6 NOT IN THIS MODEL 0 ★ 4-159-298-01 SCREW, +PSW M4X10 RC(4), UNDR CVR(1) 5

KDL-46BX420/46BX421 (ALL SERIAL NUMBER RANGES)

P/N DESCRIPTION REMARKS TOTAL

▲ 2-580-608-01 SCREW, +PSW M5X16 TABLE-TOP STAND(4) 4 △ 7-685-647-79 SCREW, +BVTP2 3X12 SPKR-L(2), SPKR-R(2) 4

■ 7-685-648-79 SCREW, +BVTP 3X12 TYPE2 IT-3 RC to TRMNL AREA(1), RC to SIDE BRKT(1) 2 □ 2-580-640-01 SCREW, +BVTP2 4X16 RC(8), SPKR BRKT-L(1), SPKR BRKT-R(1), PNL to BEZ(3) 13

◆ 2-580-595-01 SCREW, +PSW M3X12 NOT IN THIS MODEL 0 ◇ 2-580-600-01 SCREW, +PSW M4X8 NOT IN THIS MODEL 0

● 2-580-592-01 SCREW, +PSW M3X8 A BOARD(4), G3 BOARD(5), MB BRKT to PNL(2) 11 ○ 2-580-599-01 SCREW, +PSW M4X6 NOT IN THIS MODEL 0 ★ 4-159-298-01 SCREW, +PSW M4X10 RC(4), BTM FRM(2), UNDR CVR(1) 7

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

701 1-910-103-38 (LVDS) CONNECTOR ASSEMBLY 32 51P (KDL-32BX320/32BX321 ONLY) 701 1-910-103-41 (LVDS) CONNECTOR ASSEMBLY 32 51P (KDL-32BX420/32BX421 ONLY) (FOR CMO PANEL) 701 1-910-103-42 (LVDS) CONNECTOR ASSEMBLY 32 51P (KDL-32BX420/32BX421 ONLY) (FOR S-LCD PANEL)

SPSP

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 50

Page 56

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

SWITCH UNIT

TCON

751

INV

G13

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

KDL-40BX420/40BX421 ONLY

FOR SERIAL RANGES LISTED BELOW: KDL-40BX420 6000001 - 7400000 KDL-40BX421 6000001 - 7200000

801

INV

G14

SWITCH UNIT

SPSP

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

751 1-910-104-57 (LVDS) CONNECTOR ASSEMBLY 32W 51P (KDL-32BX320/32BX321 ONLY) 751 1-910-104-58 (LVDS) CONNECTOR ASSEMBLY 32F 51P (KDL-32BX420/32BX421 ONLY)

SPSP

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

801 1-910-103-39 (LVDS) CONNECTOR ASSEMBLY 40 51P (KDL-40BX420/40BX421 ONLY)

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 51

Page 57

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

SWITCH UNIT

FOR SERIAL RANGES LISTED BELOW: KDL-40BX420 3000001 - 3800000 KDL-40BX420 5000001 - 5500000 KDL-40BX421 3000001 - 3800000 KDL-40BX421 5000001 - 5300000

851

INV

G14

NOTE: The components identied by shading

and ! mark are critical for safety. Replace only

with part number specied.

NOTE: Les composants identies per un trame et

une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le

numero specie.

NOTE: The components identied by a red outline and a mark contain condential information. Specic instructions must be adhered to whenever

these components are repaired and/or replaced. See Appendix A: Encryption Key Components in the back of this manual.

(Check the Sony Authorized Servicer Portal at www.sony.com/asp for any additional service related issues for this model.)

KDL-46BX420/46BX421 ONLY

901

INV

SPSP

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

* 851 1-910-104-59 (LVDS) CONNECTOR ASSEMBLY 40 51P (KDL-40BX420/40BX421 ONLY)

REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES]

901 1-910-103-40 (LVDS) CONNECTOR ASSEMBLY 46 51P (KDL-46BX420/46BX421 ONLY)

SPSP

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 52

Page 58

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

ACCESSORIES AND PACKAGING

3-299-071-05 FLYER, SAFETY 4-275-988-11 GUIDE, QUICK SET UP (ALL MODELS EXCEPT KDL-32BX321) 4-275-988-21 GUIDE, QUICK SET UP (ALL MODELS EXCEPT KDL-32BX321) 4-275-988-31 GUIDE, QUICK SET UP (ALL MODELS EXCEPT KDL-46BX421) 4-270-476-11 MANUAL, INSTRUCTION (ALL MODELS EXCEPT KDL-32BX321) 4-270-476-21 MANUAL, INSTRUCTION (ALL MODELS EXCEPT KDL-32BX321) 4-270-476-31 MANUAL, INSTRUCTION (ALL MODELS EXCEPT KDL-46BX421) * 4-275-368-11 SUPPLEMENT(STAND INSTALLATION) (REFER TO SN RANGE LISTED ON PAGE 36) * 4-291-757-11 SUPPLEMENT(STAND INSTALLATION)

2-580-608-01 SCREW, +PSW M5X16 (SCREWS TO ATTACH TABLE-TOP STAND TO LCD TV) For product protection and safety reasons, Sony strongly recommends that you use the screws provided with the TV

CAUTION: These screws cannot be used to secure the TV to the Wall Mount Brackets

MISCELLANEOUS

4-283-209-01 INSULATION SHEET (GW32) G(A,L) (KDL-32BX320/32BX321 ONLY) (REFER TO SN RANGE LISTED ON PAGE 36) 4-281-008-01 SHEET, INSULATION (GW32)B (ALL MODELS EXCEPT KDL-32BX320/32BX321) (REFER TO SN RANGE LISTED ON PAGE 36) 4-290-627-01 SHEET, INSULATION (GF32) G (KDL-32BX320/32BX321/32BX420/32BX421 ONLY) 4-290-626-01 SHEET, INSULATION (GF32) B (KDL-32BX420/32BX421/40BX420/40BX421 ONLY) 4-289-497-01 SHEET, INSULATION (GF40) G (KDL-40BX420/40BX421 ONLY) 4-087-858-41 SHEET, VIBRATION PROOF (KDL-32BX420/32BX421/40BX420/40BX421 ONLY) X-2348-140-3 SUPPORT BELT KIT

REMOTE COMMANDER

1-489-459-11 REMOTE COMMANDER (RM-YD065)

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 53

Page 59

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

WIRE DRESSING

FIGURE 6-1. KDL-32BX320 OVERALL WIRE DRESSING

(SERIAL NO. RANGE 6000001-7400000)

FIGURE 6-2. KDL-32BX420 OVERALL WIRE DRESSING

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 54

FIGURE 6-3. KDL-32BX320 OVERALL WIRE DRESSING

(SERIAL NO. RANGE 3000001-3800000 AND 5000001-5500000)

Page 60

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

FIGURE 6-4. KDL-40BX420 OVERALL WIRE DRESSING

FIGURE 6-5. KDL-46BX420 OVERALL WIRE DRESSING

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 55

Page 61

SECTION 7 - SERVICE ADJUSTMENTS

OVERVIEW

As mentioned in Section 2 - Software Requirements on page 14, the models in this manual utilize a “generic” type main board, therefore

certain service adjustments settings must be changed or conrmed

when either the main Board, LCD Panel, or TCON Board are replaced.

UPDATING THE SOFTWARE

After replacing the main Board, LCD Panel, or TCON Board, you MUST UPDATE the SOFTWARE to the latest version. Instructions for updating the software are included with the software package on the Sony Authorized Service Portal website.

ACCESSING SERVICE ADJUSTMENT MODE

This set does not use Service Mode for adjustments. To make adjustments, refer to Accessing Factory Adjustment Mode on page 57. However, you can access the Self diagnosis history page from Service Mode.

1. TV must be in Standby mode. (Power On).

2. Press the following buttons on the Remote Commander within a second of each other:

DISPLAY

POWER

Channel 5 Volume +

POWER

DISPLAY

Onscreen cursor and select button

VOLUME+

RM-YD065

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 56

Page 62

SECTION 7 - SERVICE ADJUSTMENTS

Service Mode Sound Adjust… >> Wide Band Tuning >> Range Scan… >> Self diagnosis history >> Status Information… >> LVDS Spectrum(%0) <[ 20 ]> DPMS <[ Off ]> Low of HPD <[ 5 ]> TVD_MCDONE_CNT <[ 20 ]> Demo Special >> Bypass AVI Info Detec Panel Selection <[ W-CM22 ]>

[</>]Set [Menu] Exit

<[ Off ]>

3. To access the Self Diagnosis history page, press until Self diagnosis history is highlighted, and then press .

SELF CHEC

Back << 002 MAIN_POWE 001 003 AUD_PORT 000 003 DC_ALERT 000 004 BALANCE 005 TCON_ERR 000 005 HFR_ERR 000 005 P_ID_ER 005 PANEL_POWE 000 006 BACKLITE 000 007 TEMP_ERR 000

00000 00010 00000 [Menu] Exit

000

4. To exit service mode, turn the power off.

ACCESSING FACTORY ADJUSTMENT MODE

For these models, adjusment data is changed in Factory Mode.

1. TV must be ON.

2. Press the following buttons on the Remote Commander within a second of each other:

Input Source <[ TV ]>

Aging Mode <[ Off ]> Internal Pattern <[ Off ]> EDID WP Protection Site Air Channels <[ Off ]> Site Cable Channels <[ Off ]> Panel_ID Off Color Temp >>

ADC Calibration >>

Factory Reset (limited) <[ Off ]>

Auto Phase <[ Off ]>

Factory Reset (default) <[ Off ]>

System 0.12.300D Model Name KDL-40BX420 Serial Numbe Picture Quality PQ0.009 Audio Qualit Panel F_SS40(10) Panel Info MT001.0028.000?LT

MUTING

[</>]Set [Menu] Exit

Factory Mode

See rear or side of T

AQ4.1000

MUTING

HOME

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 57

Page 63

SECTION 7 - SERVICE ADJUSTMENTS

SELECTING THE PANEL ID CODE

After replacing the main Board or the LCD Panel, you must update the software to the latest version and then select the Panel ID from Factory Mode. Instructions for updating the software are included with the software package on the Sony Authorized Service Portal site.

3. In Factory Mode, use the button to scroll down to select

Panel_ID.

Factory Mode

Input Source <[ TV ]> Aging Mode <[ Off ]> Internal Pattern <[ Off ]> EDID WP Protection Site Air Channels <[ Off ]> Site Cable Channels <[ Off ]>

Panel_ID Off

Color Temp >>

ADC Calibration >>

Factory Reset (limited) <[ Off ]>

Auto Phase <[ Off ]>

Factory Reset (default) <[ Off ]>

Modle Name Panel Code Panel Type Panel ID

KDL-32BX320 KDL-32BX321

KDL-32BX420 KDL-32BX421

KDL-40BX420 KDL-40BX421

KDL-46BX420 KDL-46BX421

F_SS32 SLCD LTY320HN02-001

W-LG32 LGD LC320WXN-SCB1

F_CM32 CMI V315H3L01

F_SS40 SLCD LTU400HM02-A01

F_SS46 SLCD LTY460HN01-A01

5. To exit Factory Mode without turning Off the TV, press the

RETURN

button.

System 0.12.300D Model Name KDL-40BX420 Serial Numbe Picture Quality PQ0.009 Audio Qualit Panel F_SS40(10) Panel Info MT001.0028.000?LT

[</>]Set [Menu] Exit

See rear or side of T

AQ4.1000

4. Using the table below, press the or Onscreen cursor

buttons to select the Panel_ID.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 58

Page 64

SECTION 7 - SERVICE ADJUSTMENTS

ADJUSTING THE COLOR TEMPERATURE

The default White Balance data values ae set for optimal viewing. The following instructions are for technicians who have been requested to customize calibrations for their customers.

1. TV must be ON.

2. Press the following buttons on the Remote Commander within a second of each other:

Input Source <[ TV ]>

Aging Mode <[ Off ]> Internal Pattern <[ Off ]> EDID WP Protection Site Air Channels <[ Off ]> Site Cable Channels <[ Off ]> Panel_ID Off Color Temp >>

ADC Calibration >>

Factory Reset (limited) <[ Off ]>

Auto Phase <[ Off ]>

Factory Reset (default) <[ Off ]>

System 0.12.300D Model Name KDL-40BX420 Serial Numbe Picture Quality PQ0.009 Audio Qualit Panel F_SS40(10) Panel Info MT001.0028.000?LT

MUTING

Factory Mode

MUTING

See rear or side of T

AQ4.1000

HOME

Factory Mode

Input Source <[ TV ]> Aging Mode <[ Off ]> Internal Pattern <[ Off ]> EDID WP Protection Site Air Channels <[ Off ]> Site Cable Channels <[ Off ]> Panel_ID Off

Color Temp >>

ADC Calibration Off

Factory Reset (limited) <[ Off ]>

Auto Phase <[ Off ]>

Factory Reset (default) <[ Off ]>

System 0.12.300D Model Name KDL-40BX420 Serial Numbe Picture Quality PQ0.009 Audio Qualit Panel F_SS40(10) Panel Info MT001.0028.000?LT

[</>]Set [Menu] Exit

See rear or side of T

AQ4.1000

4. Press to access Color Temp adjustments.

[</>]Set [Menu] Exit

3. Using the button, scroll down to select Color Temp.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 59

Page 65

SECTION 7 - SERVICE ADJUSTMENTS

Factory Mode

--Color Temperature--

Back >>

Color Temp <[ Cool ]>

R Gain <[ 443 ]> G Gain <[ 443 ]> B Gain <[ 443 ]> R Offset <[ 512 ]> G Offset <[ 512 ]> B Offset <[ 512 ]> Recall Data <[ Off ]> Data Backup <[ Off ]>

[</>]Set [Menu] Exit

5. Press the or buttons to select the Color Temp type. (Cool, Neutral, Warm1, or Warm2.)

6. After the correct Color Temperature is selected, press the

to select the Temperature type that needs to be modied.

7. After the correct Temperature type is selected, press the to increase the data value, or press to decrease the data value.

9. To save the changes, press the to select Data Backup,

then press .

Factory Mode

--Color Temperature--

Back >> Color Temp <[ Cool ]> R Gain <[ 443 ]> G Gain <[ 443 ]> B Gain <[ 443 ]> R Offset <[ 512 ]> G Offset <[ 512 ]> B Offset <[ 512 ]> Recall Data <[ Off ]>

Data Backup <[ W/B ]>

[</>]Set [Menu] Exit

10. Do one of the following:

a. To make changes to one of the other Temperature

types, repeat steps 5 through 9.

b. To exit Factory mode, press

POWER

8. Complete the data value adjustments to the remaining temperature items within the selected temperature type.

NOTE: Changes to the data value must be saved within the Temperature type selected before making changes to one of the other Temperature types.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 60

Page 66

is a trademark of Sony Electronics

English

9-883-851-02

Sony Corporation

Sony Technology Center

Technical Services

Service Publication Department

2011AJ74WEB-1

Printed in USA

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 61

Page 67

APPENDIX A - TRIAGE SHEETS

The following Triage documents are for general reference purposes. To access the most recent version of theTriage documents for the models listed in this manual, login into the Sony Authorized Servicer Portal at www.sony.com/asp.

Sony KDL32BX320/32BX321 Technical Triage Summary Sheet

Before you make the service call…

Reference

A BOARD

G13 BOARD

H BOARD

LCD Panel

1. Confirm the symptom from the customer.

2. Select that symptom from the chart.

3. Bring all the boards listed for that symptom.

4. Follow the troubleshooting charts in the technical guides to isolate the board.

5. Chart Color Code

RED DOT: Most likely defective part

BLUE TRIANGLE: Secondary possible defective part

BLACK TEXT: Board and Part # that may correct the symptom

Power LED

blinking red diagnostics

23567

  



▲▲

Power

No Green Power LED (Dead Set)

▲



Video - missing or distorted

Stationary

colored lines

or dots

Video 2

0nly

Tuner Only



  

   



▲



▲ ▲

Remote Audio

No video all InputsNoRemote

LAST UPDATED: 1/18/11

No Audio

Part #

1-857-903-21

1-474-297-12

1-857-898-21

SEE LCD PANEL

MANUAL

AZ2UKCHASSIS:

REF #

105

106

Problem POWER POWER

PANEL INV TEMP

FIGURE APPENDIX A-1. KDL-32BX320/32BX321 MODELS ONLY

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 A-1

Page 68

Reference

A BOARD

G13 BOARD

H BOARD

LCD Panel

Sony KDL32BX420 Technical Triage Summary Sheet

Before you make the service call…

1. Confirm the symptom from the customer.

2. Select that symptom from the chart.

3. Bring all the boards listed for that symptom.

4. Follow the troubleshooting charts in the technical guides to isolate the board.

5. Chart Color Code

RED DOT: Most likely defective part

BLUE TRIANGLE: Secondary possible defective part

BLACK TEXT: Board and Part # that may correct the symptom

Power LED

blinking red diagnostics Video - missing or distorted

23567

  



▲▲

Power

No Green

Power LED

(Dead Set)

▲



Stationary

colored lines or

dots

Video 2

0nly



Tuner Only

  

   



▲



▲ ▲

Remote Audio

No video

all InputsNoRemote

No Audio

CHASSIS: AZ2UK

LAST UPDATED: 1/18/11

Part #

1-857-903-31

1-474-297-12

1-857-898-21

SEE LCD PANEL

MANUAL

REF #

155

156

Problem POWER POWER

PANEL INV TEMP

FIGURE APPENDIX A-2. KDL-32BX420 MODELS ONLY

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 A-2

Page 69

Reference

A BOARD

G13 BOARD

H BOARD

LCD Panel

Sony KDL32BX421 Technical Triage Summary Sheet

Before you make the service call…

1. Confirm the symptom from the customer.

2. Select that symptom from the chart.

3. Bring all the boards listed for that symptom.

4. Follow the troubleshooting charts in the technical guides to isolate the board.

5. Chart Color Code

RED DOT: Most likely defective part

BLUE TRIANGLE: Secondary possible defective part

BLACK TEXT: Board and Part # that may correct the symptom

Power LED

blinking red diagnostics Video - missing or distorted

23567

  



▲▲

   



▲



Power

No Green Power LED (Dead Set)

▲



Stationary

colored lines

or dots

Video 2

0nly



Tuner Only

  

▲ ▲

No video all InputsNoRemote

Remote Audio

No Audio

CHASSIS: AZ2UK

LAST UPDATED: 1/18/11

Part #

1-857-903-41

(FOR US/CND MODELS)

1-857-903-31

(FOR MX/LA MODELS)

1-474-297-12

1-857-898-21

SEE LCD PANEL

MANUAL

REF #

155

156

Problem POWER POWER

PANEL INV TEMP

FIGURE APPENDIX A-3. KDL-32BX421 MODELS ONLY

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 A-3

Page 70

Reference

A BOARD

G14 BOARD

H BOARD

LCD Panel

Sony KDL40BX420 Technical Triage Summary Sheet

Before you make the service call…

1. Confirm the symptom from the customer.

2. Select that symptom from the chart.

3. Bring all the boards listed for that symptom.

4. Follow the troubleshooting charts in the technical guides to isolate the board.

5. Chart Color Code

RED DOT: Most likely defective part

BLUE TRIANGLE: Secondary possible defective part

BLACK TEXT: Board and Part # that may correct the symptom

Power LED

blinking red diagnostics Video - missing or distorted

23567

  



▲▲

Power

No Green Power LED (Dead Set)

▲



Stationary

colored lines or

dots

Video 2

0nly



Tuner Only

  

   



▲



▲ ▲

Remote Audio

No video all InputsNoRemote

No Audio

CHASSIS: AZ2UK

LAST UPDATED: 1/18/11

Part #

1-857-903-51

1-474-310-11

1-857-898-21

SEE LCD PANEL

MANUAL

REF #

155

156

Problem POWER POWER

PANEL INV TEMP

FIGURE APPENDIX A-4. KDL-40BX420 MODELS ONLY

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 A-4

Page 71

Reference

A BOARD

G14 BOARD

H BOARD

LCD Panel

Sony KDL40BX421 Technical Triage Summary Sheet

Before you make the service call…

1. Confirm the symptom from the customer.

2. Select that symptom from the chart.

3. Bring all the boards listed for that symptom.

4. Follow the troubleshooting charts in the technical guides to isolate the board.

5. Chart Color Code

RED DOT: Most likely defective part

BLUE TRIANGLE: Secondary possible defective part

BLACK TEXT: Board and Part # that may correct the symptom

Power LED

blinking red diagnostics Video - missing or distorted

23567

  



▲▲

   



▲



Power

No Green

Power LED

(Dead Set)

▲



Stationary

colored lines

or dots

Video 2

0nly



Tuner Only

  

▲ ▲

No video all InputsNoRemote

Remote Audio

No Audio

CHASSIS: AZ2UK

LAST UPDATED: 1/18/11

Part #

1-857-903-61

(FOR US/CND MODELS)

1-857-903-51

(FOR MX/LA MODELS)

1-474-310-11

1-857-898-21

SEE LCD PANEL

MANUAL

REF #

155

156

Problem POWER POWER

PANEL INV TEMP

FIGURE APPENDIX A-5. KDL-40BX421 MODELS ONLY

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 A-5

Page 72

Reference

A BOARD

G3 BOARD

H BOARD

LCD Panel

Sony KDL46BX420 Technical Triage Summary Sheet

Before you make the service call…

1. Confirm the symptom from the customer.

2. Select that symptom from the chart.

3. Bring all the boards listed for that symptom.

4. Follow the troubleshooting charts in the technical guides to isolate the board.

5. Chart Color Code

RED DOT: Most likely defective part

BLUE TRIANGLE: Secondary possible defective part

BLACK TEXT: Board and Part # that may correct the symptom

Power LED

blinking red diagnostics Video - missing or distorted

23567

  



▲▲

Power

No Green Power LED (Dead Set)

▲



Stationary

colored lines or

dots

Video 2

0nly



Tuner Only

  

   



▲



▲ ▲

Remote Audio

No video all InputsNoRemote

No Audio

CHASSIS: AZ2UK

LAST UPDATED: 1/18/11

Part #

1-857-903-51

1-474-296-11

1-857-898-21

SEE LCD PANEL

MANUAL

REF #

155

156

Problem POWER POWER

PANEL INV TEMP

FIGURE APPENDIX A-6. KDL-46BX420 MODELS ONLY

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 A-6

Page 73

Reference

A BOARD

G3 BOARD

H BOARD

LCD Panel

Sony KDL46BX421 Technical Triage Summary Sheet

Before you make the service call…

1. Confirm the symptom from the customer.

2. Select that symptom from the chart.

3. Bring all the boards listed for that symptom.

4. Follow the troubleshooting charts in the technical guides to isolate the board.

5. Chart Color Code

RED DOT: Most likely defective part

BLUE TRIANGLE: Secondary possible defective part

BLACK TEXT: Board and Part # that may correct the symptom

Power LED

blinking red diagnostics Video - missing or distorted

23567

  



▲▲

   



▲



Power

No Green Power LED (Dead Set)

▲



Stationary

colored lines

or dots

Video 2

0nly



Tuner Only

  

▲ ▲

No video all InputsNoRemote

Remote Audio

No Audio

CHASSIS: AZ2UK

LAST UPDATED: 1/18/11

Part #

1-857-903-61

(FOR US/CND MODELS)

1-857-903-51

(FOR MX/LA MODELS)

1-474-296-11

1-857-898-21

SEE LCD PANEL

MANUAL

REF #

155

156

Problem POWER POWER

PANEL INV TEMP

FIGURE APPENDIX A-7. KDL-46BX421 MODELS ONLY

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 A-7

Page 74

APPENDIX B - OPERATING INSTRUCTIONS

The Operating Instructions are the documents that are included with the television. Sony’s BRAVIA TVs now come with an on-screen i-Manual. To learn more about the TVs features access the i-Manual using the customers remote control.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 B-1

Sony KDL-40BX421, KDL-40BX420, KDL-32BX420, KDL-32BX320, KDL-32BX321 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SECTION 1 - SAFETY AND FEATURES

WARNINGS AND CAUTIONS - ENGLISH

SAFETY-RELATED WARNINGS

WARNINGS AND CAUTIONS - FRENCH

SAFETY CHECK-OUT

SELF DIAGNOSIS FUNCTION

OVERVIEW

FEATURES

SCENE SELECT

USB INPUT

LIGHTSENSOR™ TECHNOLOGY

5 HD INPUTS

BRAVIA® SYNC™ COMPATIBLE

KDL-32BX320/32BX321 MODELS ONLY

ALL EXCEPT KDL-32BX320/32BX321 MODELS

SPECIFICATIONS

SECTION 2 - SOFTWARE REQUIREMENTS

OVERVIEW

SOFTWARE UPDATES FOR CUSTOMERS

SOFTWARE UPDATES FOR SERVICERS

SOFTWARE UPDATE RESPONSIBILITY

CHECKING THE SOFTWARE VERSION

EXAMPLES OF SOFTWARE CORRECTABLE SYMPTOMS

SECTION 3 - CHASSIS OVERVIEW

OVERVIEW

OVERALL CIRCUIT DESCRIPTION

A BOARD

POWER SUPPLY

INVERTER

SWITCH UNIT

H BOARD

SECTION 4 - TROUBLESHOOTING

OVERVIEW

UPDATING THE SOFTWARE

VIDEO FAILURES

NO VIDEO

VIDEO DISTORTION

AUDIO TROUBLESHOOTING

POWER SUPPLY TROUBLESHOOTING

COMPLETELY DEAD SET

TV WON’T POWER ON

BACKLIGHT ISSUES

NO BACKLIGHT, NO SHUTDOWN

PROTECTION SHUTDOWN

STANDBY LED FLASH COUNT

DIAGNOSTIC CODE DESCRIPTIONS

VIEWING THE SELF CHECK DIAGNOSTIC HISTORY

CLEARING THE SELF CHECK DIAGNOSTIC LIST

EXITING THE SELF CHECK DIAGNOSTIC SCREEN

TEST POINTS

SECTION 5 - FLOW CHARTS AND DIAGRAMS

VIDEO INFORMATION

POWER SUPPLY INFORMATION

PROTECTION INFORMATION

SECTION 6 - DISASSEMBLY/PART NUMBER INFORMATION

TABLE-TOP STAND ASSEMBLY REMOVAL

REAR COVER AND SPEAKERS REMOVAL

KDL-32BX320/32BX321/32BX420/32BX421 ONLY

KDL-40BX420/40BX421 ONLY

KDL-46BX420/46BX421 ONLY

A (MAIN) BOARD, G13/G14/G3 (POWER SUPPLY) BOARD AND LCD PANEL REMOVAL

KDL-32BX320/32BX321 ONLY

KDL-32BX420/32BX421 ONLY

KDL-40BX420/40BX421 ONLY

KDL-46BX420/46BX421 ONLY

CLEANING THE LCD PANEL

SCREW LEGEND

CONNECTORS

KDL-32BX320/32BX321/32BX420/32BX421 ONLY

KDL-40BX420/40BX421 ONLY

KDL-46BX420/46BX421 ONLY

ACCESSORIES AND PACKAGING

MISCELLANEOUS

REMOTE COMMANDER

WIRE DRESSING

SECTION 7 - SERVICE ADJUSTMENTS