Sony KDL-32BX320 / KDL-32BX321 / KDL-32BX420 / KDL-32BX421 / KDL-40BX420 / KDL-40BX421 / KDL-46BX420 / KDL-46BX421 Service Manual ▷ View online
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
The cover-plate retaining screw on most AC outlet boxes is at earth ground.Verify
the AC outlet box retaining screw ground by connecting 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
Figure B. Checking for earth ground.
To Exposed Metal
Parts on Set
0.15 µF
Earth Ground
AC
Voltmeter
(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 flash. The number of
times the LED flashes translates to a probable source of the problem. A definition of the STANDBY LED flash 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
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
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
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 five different packages each with preconfigured
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 finger. 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 five 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).
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