Ir Board; Lcd Panel Assembly; Tcon Board - Sony KDL-46HX820 Service Training Manual

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.

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 information.
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

4. LD Board (for some models)
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.)
KDL-46HX820/55HX820
SECTION 3 - CHASSIS OVERVIEW
26