T'CON [TFT DRIVE] PWB [Click on pictures to Enlarge]
The
T-Con IC UC2 receives from the Main Board at CN1 and CN2 Quadruple 12 Bit LVDS
Signals which it processes into TFT Drive Signals which through connectors CN4
and CN5 controls the LCD Panel. IC’s U12 and U13 are “Dynamic Ram IC’s which are
High Speed Storage Devices used to store the data until it is time to be
addressed. 12V is supplied to the T-Con Board on connector CN1 from the Main
Board ( easily measured at fuse F1). NEW:
This T-CON also drives the backlight LEDs in accordance to the necessary Light
Source intensity according to the video content Contrast Ratio demands, (Local
Dimming). Control signals to the Inverters are sent out CN8 and CN9.
T'CON [TFT DRIVE PWB] WITH SHIELD
47LG90 T'CON
[CN-304] INVERTER 'M' TO 'CN8' "T'-CON" VOLTAGE CHART
[CN-804] INVERTER 'S' TO 'CN9' "T-CON" VOLTAGE CHART
T'CON PWB [SHIELD REMOVED]
T'CON PWB [FUSE CHECK]
T'CON PWB [REGULATOR & MAIN FUSE CHECK]
T'CON [DC to DC CONVERTER CHECK]
T'CON PWB [CRYSTAL 'U91'] CHECK
T'CON [DC to DC CONVERTER 'U7'] CHECK
T'CON [CN-4 & CN-5] VOLTAGE CHECK
T'CON [CN8/CN9] VOLTAGE & RESISTANCE
- 1EXT_VBRBcan vary according to type of signal being processed, OSD Backlight setting.0.3V 0% to 3.4V 100% and the Intelligent Sensor. Output controlled from the BCM chip.
- Note: Inverter PWBs Pin numbers are opposite.
- Diode Mode values taken with all Connectors Removed.
