Usb Camera; Ir Board; Lcd Panel Assembly; Tcon Board - Sony KDL-40NX725 Service Manual

USB CAMERA

A USB camera is located on the front bezel below the Sony logo.
Special software is located inside IC9000 to use the camera for
power and picture control management. Face recognition software
can determine whether someone is viewing the television. The
number of people, distance from the TV, location from center, and
whether the person(s) are looking at the television provides data to
control the picture brightness and contrast. A lack of face recognition
(no one viewing the television) can also be used to turn off the
backlights, and, eventually turn the TV off for power savings.

IR BOARD

Designated as the HLT2 Board, the IR Board contains the power,
standby, and timer LED's are located on this board along with the IR
remote receiver and light level sensor.
KDL-40NX725/55NX725/60NX725
SECTION 3 - CHASSIS OVERVIEW

LCD PANEL ASSEMBLY

The LCD Panel Assembly includes the LCD Panel, TCON Board,
and LED Backlight system.
NOTE: The LD Board is not always included with the LCD Panel.
Check with the LCD panel manual for the most update information
regarding this.
The LCD Panel contains the actual liquid crystals, color filters, and
polarizers. The liquid crystals are manipulated by the applied voltage
to pass a specific amount of light - from the backlight- depending on
the level of voltage applied.
The TCON performs all the control, timing, charge, and discharge
functions driving the operation of the LCD Panel.
A new LCD Panel assembly from parts will include the following
items.
1. LCD Panel
2. LED Backlighting Components (varies)

3. TCON Board

TCON BOARD
The TCON Board communicates between the LCD Panel and the
microprocessor on the Main Board. (NOTE: The TCON Board is not
available as a replacement part for all models.)
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