MAIN PWB
- The Main PWB contains the MICRONAS chip IC1000.
- This IC is a Full-HD Rate Converter with Motion Blur Removal and Film De-Juddering for 1080p 100/120 Hz LCD panels.
- Vector Based Motion Compensation with Frame Rate Conversion (eliminates the need for 3:2 Pull Down)
- Internal Dual 10 bit LVDS input
- Quadruple 12 bit LVDS output.
- Motion Blur Removal increases the video frames by Interpolating a new image frame between each original frame (Motion Estimated Data Insertion) MEDI
- Juddering is a phenomenon which appears on film based programming due to the 24 frames per second system used for recording, the picture develops visual artifacts when converted to 60 frames per second. 3:2 Pull Down was developed to eliminate this problem. Frame Rate Conversion (Real Cinema) eliminates the need for 3:2 Pull Down.
- TruMotion 120Hz ( Vector Based Motion Compensation)
- TruMotion 120 Hz can reduce blurring on fast moving scenes. TruMotion carefully analyses the picture signal by using advanced algorithms to automatically calculate a new image frame between each original frame (MEDI).
MAIN PWB LAYOUT [Click on images to Enlarge]
COMPONENT LAYOUT
MAIN BOARD - BACK VIEW
MAIN PWB [FRONT SIDE] REGULATORS
MAIN PWB [BACK SIDE REGULATORS] SIDE-1
MAIN PWB [BACK SIDE REGULATORS] SIDE - 2
MAIN PWB [BACK SIDE REGULATORS] SIDE - 3
MAIN PWB LD803 FUNCTION
- Use LD803 as a visual aid. This lets you know if the +5V is being converted to 3.3V for the BCM chip IC100. If LD803 is illuminated GREEN, +3.3V is OK.
- Note: Only ½ of the dual LED is used.
LD 803 CIRCUIT
MAIN PWB TUNER, VIDEO AND SOUND IF [SIF] CHECK PIN LOCATION
- If you leave the shield on you can still access the same pins. Be careful not to accidentally ground out your test lead on the shield. (Note: This is a picture from a different model, but the concept is the same.
MAIN PWB CONNECTOR [P-800] VOLTAGE & RESISTANCE
- Pin 21 BRI(ADIM) Is Fixed and is not used
- Diode Mode values taken with all Connectors Removed.
- PDIM Pin 22can vary according to type of signal being processed, OSD Backlight setting. 0.4V 0% to 3.4V 100% and the Intelligent Sensor. Output controlled from the BCM chip.
MAIN PWB CONNECTOR [P-1000] 'ODD PINS' VOLTAGE AND RESISTANCE
- Diode Mode values taken with all Connectors Removed.
MAIN PWB CONNECTOR [P-1000] 'EVEN PINS' VOLTAGE & RESISTANCE
- Diode Mode values taken with all Connectors Removed.
MAIN PWB CONNECTOR [P-1001] VOLTAGE & RESISTANCE
- Diode Mode values taken with all Connectors Removed.
- Pins identified in Bold and Blue are used to send video content to the T-CON PWB.
MAIN PWB CONNECTOR [P-404] VOLTAGE & RESISTANCE
MAIN PWB CONNECTOR [P-501] VOLTAGE AND RESISTANCE
