LG 26LH1DC1-UB Service Manual page 43

10. PC Video signal flow chart
RGB Signal Input
The RGB signal outputted from the PC is received through the D-sub 15 pin connector of P301.
The PC reads the EDID information of IC303 through I
When the EDID information is not recorded in NVRAM(IC303) or when the EDID information cannot be read due to
communications line issue, basic resolution provided in PC is sent out as output.
The analog RGB signal entered through IC302 is converted to AD through the scaler(IC302) and sent to IC401 as
24 bit digital signal.
(The 24 bit signal is composed is wired OR with the 24 bit component outputted by the IC201(AD converter).)
The 24 bit signal received in DTV controller(IC401) is decoded and converted to LVDS to be sent to LCD panel
through P503.
Copyright©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LCD Panel
*PC RGB signal flowchart
2
P301 I C Comm.
D-sub 15 Connector
R/G/B
IC302
Scaler
24bit
Digital signal
IC401
DTV Controller
LVDS Signal
P503
LVDS Connector
2 C line and outputs the best resolution supported by this board.
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IC303
NVRAM
(PC EDID)
LGE Internal Use Only