KDL-55HX827 - Sony TV Service Manual (repair manual). Page 23

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KDL-55HX827 17
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.
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 48
.
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
.
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