Sony BRAVIA KDL-32BX320 Installation guide

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

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

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

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

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

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 1
WARNINGS AND CAUTIONS - ENGLISH
CAUTION
These servicing instructions are for use by qualied service personnel only. To reduce the risk of electric shock, do not perform any servicing other
than that contained in the operating instructions unless you are qualied to do so.
CARRYING THE TV
•Carry the TV with the adequate number of people; larger size TVs require two or more people.
•Correct hand placement while carrying the TV is very important for safety and to avoid damage.
•Disconnect all cables when carrying the TV.
WARNING!!
An isolation transformer should be used during any service to avoid possible shock hazard, because of live chassis. The chassis of this receiver is
directly connected to the AC power line.
!
SAFETY-RELATED COMPONENT WARNING!!
Components identied by shading and
!
mark on the exploded views are critical for safe operation.
Replace all components with Sony parts whose part numbers appear as shown in this manual or in supplements published by Sony. It is essential
that all critical parts be replaced only with the part number specied in this manual to prevent electric shock, re, or other hazard.
Circuit adjustments that are critical for safe operation are identied in this manual.
Follow these procedures whenever critical components are replaced or improper operation is suspected.
NOTE: Do not modify the original design without obtaining written permission from the manufacturer or you will void the original parts and labor
guarantee.
SECTION 1 - SAFETY AND FEATURES

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 2
SECTION 1 - SAFETY AND FEATURES
CAUTION
WDo Not use paper towels, any type of abrasive pad, rags, rubber or vinyl materials to clean the screen. Using these materials could easily
scratch the screen which may result in permanent damage.
WDo Not use any cleaning product containing alkaline/acid cleaner, scouring powder, or volatile solvent, such as alcohol, ammonia,
benzene, thinner or insecticide. Using any of these harsh cleaners may result in permanent damage to the screen.
WDo Not spray water or detergent directly onto the TV screen . If liquid drips into the bottom of the screen it may cause a failure.
CLEANING THE LCD PANEL
CAUTION: When cleaning the TV, be sure to unplug the power cord to avoid any chance of electric shock.
Clean the cabinet of the TV with a dry soft cloth.
Wipe the LCD screen gently with a soft cloth.
RStubborn stains may be removed with a cloth slightly moistened with a solution of mild soap and warm water.
RIf using a chemically pretreated cloth, please follow the instruction provided on the package.
RNever use strong solvents such as a thinner, alcohol or benzine for cleaning.
RPeriodic vacuuming of the ventilation openings is recommended to ensure to proper ventilation.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 3
SECTION 1 - SAFETY AND FEATURES
SAFETY-RELATED WARNINGS
USE CAUTION WHEN HANDLING THE LCD PANEL
When repairing the LCD panel, be sure you are grounded by using a wrist band.
When installing the LCD panel on a wall, the LCD panel must be secured using the 4 mounting holes on the rear cover.
1. Do not press on the panel or frame edge to avoid the risk of electric shock.
2. Do not scratch or press on the panel with any sharp objects.
3. Do not leave the module in high temperatures or in areas of high humidity for an extended period of time.
4. Do not expose the LCD panel to direct sunlight.
5. Avoid contact with water. It may cause a short circuit within the module.
6. Disconnect the AC power when replacing the backlight or inverter circuit.
(High voltage occurs at the inverter circuit at 650Vrms.)
7. Always clean the LCD panel with a soft cloth material.
8. Use care when handling the wires or connectors of the inverter circuit. Damaging the wires may cause a short.
9. Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).
10. During the repair, DO NOT leave the Power On for more than 1 hour while the TV is face down on a cloth.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 4
SECTION 1 - SAFETY AND FEATURES
WARNINGS AND CAUTIONS - FRENCH
ATTENTION!!
Ces instructions de service sont à l’usage du personnel de service qualié seulement. Pour prévenir le risque de choc électrique, ne pas faire
l’entretien autre que celui contenu dans le Mode d’emploi à moins que vous soyez qualié faire ainsi.
POUR TRANSPORTER LE TÉLÉVISEUR
•Transportez le téléviseur avec le nombre de personnes approprié ; un téléviseur de grande
taille doit être transporté par au moins deux personnes.
• Lors du transport du téléviseur , l’emplacement des mains est très important pour votre
sécurité, ainsi que pour éviter de causer des dommages.
ALERTE!!
An d’eviter tout risque d’electrocution provenant d’un chássis sous tension, un transformateur d’isolement doit etre utilisé lors de tout dépannage.
Le chássis de ce récepteur est directement raccordé à l’alimentation du secteur.
!
ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
Les composants identies par une trame et par une marque
!
sur les schemas de principe, les vues explosees et les listes de pieces sont
d’une importance critique pour la securite du fonctionnement. Ne les remplacer que par des composants Sony dont le numero de piece est
indique dans le present manuel ou dans des supplements publies par Sony. Les reglages de circuit dont l’importance est critique pour la securite
du fonctionnement sont identies dans le present manuel. Suivre ces procedures lors de chaque remplacement de composants critiques, ou
lorsqu’un mauvais fonctionnement suspecte.

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

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

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

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 8
SECTION 1 - SAFETY AND FEATURES
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).
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).
Trouble Light
AC Outlet Box Ohmmeter
Cold-water Pipe
Figure B. Checking for earth ground.
To Exposed Metal
Parts on Set
0.15 µF
Earth Ground
AC
Voltmete
r
(0.75V)
Figure A. Using an AC voltmeter to check AC leakage.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 9
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.
Self Diagnosis
Supported model

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 10
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 HD-
capable 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 11
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 at-
home 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 12
SECTION 1 - SAFETY AND FEATURES
SPECIFICATIONS
Licensing Information
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® qualied
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.
System
Television system NTSC: American TV standard
ATSC (8VSB terrestrial): AT SC compliant 8VSB
QAM on cable: ANSI/SCTE 07 2000 (Does not include CableCARD functionality)
Channel coverage Analog terrestrial: 2 - 69 / Digital terrestrial: 2 - 69
Analog Cable: 1 - 135 / Digital Cable: 1 - 135
Panel system LCD (Liquid Crystal Display) Panel
Speaker output
(except KDL-22BX321/BX320)8 W + 8 W
Speaker output
(KDL-22BX321/BX320 only) 5 W + 5 W
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
AUDIO: 500 mVrms (Typical) / Impedance: 47 kilohms
COMPONENT IN YPBPR (Component Video): Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative /
PB: 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
p42/0801,p0801,i0801,p027,p084,i084:oediV:IMDHNIIMDH
Audio: Two channel linear PCM 32, 44.1 and 48 kHz, 16, 20 and 24bits,
Dolby Digital
PC Input
AUDIO OUT 500 mVrms (typical)
DIGITAL AUDIO OUT
(OPTICAL)
PCM/Dolby Digital optical signal
evitisop,smho57,p-pV7.0,BGRgolana,nip-51bus-DNICP
See the PC Input Signal Reference Chart for PC and HDMI IN in the OI manual.
PC/HDMI IN 1 AUDIO INPUT Stereo mini jack, 500 mVrms, (Typical) / Impedance: 47 kilohms

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 13
SECTION 1 - SAFETY AND FEATURES
Model name KDL- 46BX421
46BX420
40BX421
40BX420
32BX421
32BX420
Power and others
Power requirement110-240 V AC, 50/60 Hz (U.S.A./Canada/Mexico 120 V AC, 60 Hz)
Power consumption W511W081W012
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) 0464 31.5
(32 class)
)lacitrev(senil080,1×)latnoziroh(stod029,1noituloseryalpsiD
Speaker/Full range (2) (mm)
(inches)
40 × 100
(1 5/8× 4)
Dimensions with stand (mm)
(inches)
1,120 × 707 × 294
44 1/8× 27 7/8× 11 5/8
988 × 632 × 250
39 × 25 × 9 7/8
800 × 528 × 220
31 1/2× 20 7/8× 8 3/4
without stand (mm)
(inches)
1,120 × 674 × 97
44 1/8× 26 5/8× 3 7/8
988 × 600 × 94
39 × 23 5/8× 3 3/4
800 × 496 × 91
31 1/2× 19 5/8× 3 5/8
wall-mount hole pattern (mm) 003×003 002×002
m in Operating Instruction manual)argaidotrefer:htgnel(6M)mm(eziswercstnuom-llaw
Mass with stand (kg)
(lb.)
20.1
44.3
15.7
34.6
10.7
23.6
without stand (kg)
(lb.)
17.7
39.0
13.6
30.0
9.1
20.1
Supplied accessories Remote control RM-YD065 (1)/Size AA batteries (2)/Operating Instructions (1)/Quick Setup Guide
(1)/Warranty Card (1)/Safety and Regulatory Booklet (1)/Software License (1)/Stand installation
guide (1)/Table-Top Stand (1 set)
common to all models
individual models Screw (7)
Optional accessories Connecting cables / Support Belt Kit / Wall-Mount Bracket: SU-WL500
32BX321
32BX320
×)latnoziroh(stod883,1
)lacitrev(senil867

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 14
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.

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 15
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.
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 <?>.
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.
FIGURE 2-1. SOFTWARE VERSION ON THE CONTACT SONY SCREEN