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Model
KDL-32BX320 KDL-32BX321 KDL-32BX420 KDL-32BX421 KDL-40BX420 KDL-40BX421 KDL-46BX420 KDL-46BX421
Pages
80
Size
6.34 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-32bx320-kdl-32bx321-kdl-32bx420-kdl-32bx421-kd.pdf
Date

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 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-Definition 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® qualified 
in the “Home” mode. It meets strict energy 
efficiency 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 
efficient 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 qualification in the “Home” 
mode.
System
Television system
NTSC: American TV standard 
ATSC (8VSB terrestrial): ATSC 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
YP
B
P
(Component Video): Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative /  
P
B
: 0.7 Vp-p, 75 ohmsP
R
: 0.7 Vp-p, 75 ohms / 
    Signal format: 480i, 480p, 720p, 1080i, 1080p
AUDIO: 500 mVrms (Typical) / Impedance: 47 kilohms
 
p
4
2
/
0
8
0
1
 ,
p
0
8
0
1
 ,
i
0
8
0
1
 ,
p
0
2
7
 ,
p
0
8
4
 ,
i
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8
4
 :
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 :
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M
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D
H
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
e
v
it
i
s
o
p
 ,
s
m
h
o
 
5
7
 ,
p
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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 requirement
110-240 V AC, 50/60 Hz (U.S.A./Canada/Mexico 120 V AC, 60 Hz)
Power consumption
W
 
5
1
1
W
 
0
8
1
W
 
0
1
2
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)
0
4
6
4
31.5
(32 class)
)l
a
c
it
r
e
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il
 
0
8
0
,
1
 
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h
s
t
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0
2
9
,
1
 
n
o
it
u
l
o
s
e
y
a
l
p
s
i
D
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)
0
0
3
 
×
 
0
0
3
0
0
2
 
×
 
0
0
2
 
m in Operating Instruction manual)
a
r
g
a
i
d
 
o
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l(
 
6
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)
m
m
e
z
is
 
w
e
r
c
s
 t
n
u
o
m
-l
l
a
w
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
 
×
 )
l
a
t
n
o
z
ir
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h
s
t
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8
8
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,
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v
s
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n
il
 
8
6
7
 
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 specifically 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 file 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 file, 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 specific 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  significantly  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 
efficiently.  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 modified or verified to complete the service of the
TV. Service adjustment information is covered in 
Section 7 - Service 
Adjustments on page 56.
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 notified 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
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