XOCECO LC-40T7, Руководство по обслуживанию

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Image parts:
Video signal of TUNER will be sent to AV switch M52797 (N400), Video signal of AV1 and AV2 will
also be sent to M52797 (N400) at the same time, two groups of video output will be obtained after
switching, one group of video output together with its audio output will be sent to AV_OUT terminal
to treat as AV OUT. The other group of video output together with other video signals such as
S-VIDEO, YPbPr1, YPbPr2 and VGA will be sent to PW2300 to do video decoding or AD
transformation, then output 24bit digital RGB signal and some corresponding synchronous signals.
Items such as 3D comb filter, channel switching, 5 lines Y/C separation and color decoding etc. are
primarily done by PW2300. 24bit digital RGB signal and some corresponding synchronous signals
outputted by PW2300 will then be sent to PW218 (N601). HDMI signal will also be sent to AD9398
(N101) to do decoding and output 24bit digital RGB signal as well as some corresponding
synchronous signal, which will be sent to PW218 (N601). PW218 is a new generation chip of
Pixelworks, which has ability to deal with images, 24bit digital RGB signal and some corresponding
synchronous signals outputted by AD9398 and PW2300 will be sent to this chip to deal with images.
The chip has functions such as converting from interleaved into line-by-line and image
enhancement etc.. PW218 has SCALER function which can do format conversion towards different
input formats so as to meet the format needs of the screen and finally output 24bit RGB signal. The
interface standard of PDP screen is generally LVDS (low voltage differential signal), so PW218 send
LVDS to drive the screen. PW218 is also the main CPU, its programs are stored in periphery device
flash N701, and software upgrade through RS-232 interface is virtually upgrading the stored
programs through PW218 towards N701.
Chief functions:
High definition 1080P LCD
16:9 wide screen; Support several kinds of HDTV wide voltage range, low standby power
consumption (less than 1W); One group of D-SUB, S-VSH (Y/C), RS232, AVOUT, HEADPHONE,
HDMI, two groups of YPbPr/YCbCr, AV.