DOWNLOAD Sony KDL-46HX820 / KDL-55HX820 (serv.man2) Service Manual ↓ Size: 9.62 MB | Pages: 88 in PDF or view online for FREE

KDL-46HX820/55HX820 19

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.
Rovi and Rovi On Screen Guide are 
trademarks of Rovi Corporation and/or 
its subsidiaries.
The Rovi On Screen Guide system is 
manufactured under license from Rovi 
Corporation and/or its subsidiaries.
The Rovi On Screen Guide system is 
protected by one or more United States 
patents of Rovi Corporation and/or its 
subsidiaries.
Rovi Corporation and/or its subsidiaries 
and related affiliates are not in any way 
liable for the accuracy or availability of 
the program schedule information or 
other data in the Rovi On Screen Guide 
system and cannot guarantee service 
availability in your area. In no event 
shall Rovi Corporation and/or its related 
affiliates be liable for any damages in 
connection with the accuracy or 
availability of the program schedule 
information or other data in the Rovi On 
Screen Guide system.

Blu-ray Disc is a trademark.
“BRAVIA” and 

, S-Force, 

Motionflow, 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.

DLNA

®

, the DLNA Logo and DLNA 

CERTIFIED

®

 are trademarks, service 

marks, or certification marks of the 
Digital Living Network Alliance.
“FACE DETECTION” logo is 
trademark of Sony Corporation.
TrackID is a trademark or registered 
trademark of Sony Ericsson Mobile 
Communications AB.
Music and video recognition technology 
and related data are provided by 
Gracenote

®

. Gracenote is the industry 

standard in music recognition 
technology and related content delivery. 
For more information, please visit 
www.gracenote.com. 
CD, DVD, Blu-ray Disc, and music and 
video-related data from Gracenote, Inc., 
copyright © 2000-present Gracenote. 
Gracenote Software, copyright © 2000-
present Gracenote. One or more patents 
owned by Gracenote apply to this 
product and service. See the Gracenote 
website for a nonexhaustive list of 
applicable Gracenote patents. 
Gracenote, CDDB, MusicID, 
MediaVOCS, the Gracenote logo and 
logotype, and the “Powered by 
Gracenote” logo are either registered 
trademarks or trademarks of Gracenote 
in the United States and/or other 
countries.

Opera

®

 Browser from Opera Software 

ASA. Copyright 1995-2010 Opera 
Software ASA. All rights reserved.

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. Rovi 
On Screen Guide, Picture/Sound, Light 
Sensor, 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.

KDL-46HX820/55HX820 20

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 

.

 

● 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 

The subject of software updates is 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 

 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-46HX820/55HX820 21

 

● Network Downloads: Internet software updates are 

becoming more prevalent as more and more models 

incorporate home network capabilities. This method is the 

most practical since the television will check for the latest 

version of software. The models using the this wchassis 

provide the customer with a choice of turning the automatic 

software update feature on or off. If set to on, the television 

will lookup software information while the unit is in standby. 

If a newer version is available, it will be downloaded and 

installed without any input from the customer.

 

● Built-in Tuner: OTA or cable sources having the proper 

station that is transmitting software update data packets. 

Although the ability to transmit software update is possible in 

this way, it is the least common and is reserved for particular 

situations where a critical update is “forced”, thereby 

updating the unit without any input from the customer.

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  

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 

.

KDL-46HX820/55HX820 22

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 

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

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.

Always check the Sony Authorized Servicer Portal at 

software related. Most symptoms that are correctable by software 

updates involve communications issues with other devices or minor 

glitches in the operation of a specific 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 file viewing)