Chapter 13 Circuit Description; M 13-I Overallblockdescription - Samsung HLRS078WX/XAA Service Manual

Circuit Description
13. Circuit Description
13-1 Overall Block Description
Anynet, G-Link
HDMI/PC
IEEE1394/Anynet
Optical/Gemstar-IR
RF In(Air,Cabl_
CableCard
AlVIn 1,2,3
S-Video 1 2 3
Component 1,2
,,_A/V Out
RS-232C In
PC/DVI Audio In
'_E_ [_ Signal
Power
Light Signal
AC
The DLPTV is largelydividedinto: Powerpart, Enginepart andAnalog + Digitalparts.
The ass'ythat consistsof the DMD board,Detect(Actuator)board,lamp,ballastand opticaldevicesis calledthe Engine.
The analog+ digitalboard parts receivetheAV signalsto outputvoice signalsand processthe remotecontrolsignals.
The enginepartdisplaysthe videodata on the screen,which is generatedin the analog +digital boards.
TheAV signalsare inputthroughthe analogand digitalboards.ADV7400processesthe MUX and decodingwhile X226
B processesthe CPUfunctions,MPEGand 12S.
Finally,the improvedDNle imageis sent to the DMDengine board.
Thefinal data by DNle is processedin DDP1011of the DMDboardto displaythe imageon the DMD panel.This imageis created
by the lightof the lampthroughthe colorwheelwhich is enlargedand projectedonto the screen.
This is the DLPof the L7 or L8 type that the actuatoroperatesadditionally duringthis process.
The powerterminalgeneratesthe DC powerneededfor the productand sends it to the analog board.The analogboardsupplies
the powerto the digitaland DMD boards.
In the meantime, t he powersourceboardsuppliesDC220V- 400V directlyto the ballastin order to light the lamp.
The ballastis like a stabilizerfor lightingthe lamp.
The ultimatepurposeof the TV set is to projectan imageontothe screenand outputthe voice signalssynchronized with the
image.And basedon the DMDpanel used,a 1-panelTV requiresa color wheelwhile a 3-panelTV doesnot. The HD3 panel
needsan actuatorwhile the HD2 doesnot. However, t he drivemechanism and the overallblock structureof the two panelsare the
same.
SamsungElectronics 13-1