LCD DV 42LH90
60
February 2010
LCD Panel Controller Board
The T-Con Processor UC1 receives from the Main Board via CN1 dual 12 Bit
LVDS (Video) Signals and CN2 dual 12 Bit LVDS (Video) Signals. Both LVDS
cables are carrying 24 bit signals.
UC1 then processes these signals into TFT Drive Signals.
It delivers its output signals through connectors CN4 and CN5 to drive the LCD
Panel.
12V is supplied to the T-Con Board on connector CN1 from the Main Board
(easily measured at fuse F1).
There is one regulator that creates 1.8V developed at pin 2 (Center Leg) of U11.
U5 is a DC to DC converter IC which develops the Panels driver voltages.
16V, 3.3V, -5V and 26V.
These voltages can be read at the ribbon connector or at test points on the
board which will be identified later.
T
T
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CON (TFT DRIVE) BOARD SECTION
CON (TFT DRIVE) BOARD SECTION
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