Chapter 13 Circuit Description; Overall Block Description - Samsung HL-R4667W Service Manual
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Also See for HL-R4667W:
- Owner's instructions manual (136 pages) ,
- Instruction manual (102 pages) ,
- Brochure & specs (6 pages)
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13. Circuit Description
13-1 Overall Block Description
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The DLP TV is largely divided into: Power part, Engine part and Analog + Digital parts.
The ass'y that consists of the DMD board, Detect (Actuator) board, lamp, ballast and optical devices is called the Engine.
The analog + digital board parts receive the AV signals to output voice signals and process the remote control signals.
The engine part displays the video data on the screen, which is generated in the analog + digital boards.
The AV signals are input through the analog and digital boards. ADV7401 processes the MUX and decoding while X226
B processes the CPU functions, MPEG and I2S.
Finally, the improved DNle image is sent to the DMD engine board.
The final data by DNle is processed in DDP1011 of the DMD board to display the image on the DMD panel. This image is created
by the light of the lamp through the color wheel which is enlarged and projected onto the screen.
This is the DLP of the L3 or L6 type that the actuator operates additionally during this process.
The power terminal generates the DC power needed for the product and sends it to the analog board. The analog board supplies
the power to the digital and DMD boards.
In the meantime, the power source board supplies DC220v - 400v directly to the ballast in order to light the lamp.
The ballast is like a stabilizer for lighting the lamp.
The ultimate purpose of the TV set is to project an image onto the screen and output the voice signals synchronized with the
image. And based on the DMD panel used, a 1-panel TV requires a color wheel while a 3-panel TV does not. The HD4 panel
needs an actuator while the HD2 does not. However, the drive mechanism and the overall block structure of the two panels are the
same.
Samsung Electronics
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Circuit Description
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13-1
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