Sony KDL-40NX725 / KDL-46NX725 Service Manual ▷ View online
KDL-40NX725/46NX725
15
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.
● Software update for servicers
These updates are specifically for servicers to use during a
service call.
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
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
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.
KDL-40NX725/46NX725
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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 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.
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
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.
In addition to software installation, service adjustment information
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 51
.
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
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.
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.
KDL-40NX725/46NX725
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SECTION 2 - SOFTWARE REQUIREMENTS
EXAMPLES OF SOFTWARE CORRECTABLE
SYMPTOMS
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)Loss of color
● Internet connectivity
● Certain features not working correctly
(photo or video file viewing)
KDL-40NX725/46NX725
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OVERVIEW
The primary circuits contained in the AZ2-F chassis for the consists of a Main Board (designated as the BATV board), Power Supply Board
(designated as the G4BW Board for the 40” models and G5AW Board for the 46” models), the Motion Sensor (HEM2 Board), the IR Board (HLT2
Board), the Switch Unit, and the LCD Panel assembly.
NOTE: For connector part number information, refer to
“Connectors” on page 48
. For Wire Dressing information, refer to
“Wire Dressing” on page 50
.
BATL Board
HEM2 Board
Switch Unit
G4BW Board
TCON
HLT2 Board
LD Board
Camera Module
Wireless LAN Card
FIGURE 3-1. BOARD LAYOUT FOR KDL-40NX725 ONLY
SECTION 3 - CHASSIS OVERVIEW
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