LG 26LH1DC1-UB Service Manual page 40

7. S-Video Video signal flow chart
S-Video signal is received through P101 jack.
Y signal and C signal are separated in this signal and is received directly by DTV controller(IC401) and decoded by
IC401 to convert to LVDS signal.
Then it is sent to the LCD panel through P503.
And the caption signal is send to IC401 through the video filter (IC107) and microprocessor(IC705) via analog video
switch(IC706).
The audio signal of S-Video is used as the audio signal of AV3.
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Only for training and service purposes
S-Video Input
LCD Panel
*S-Video signal flowchart
CVBS
P101
for Caption
S-Video Jack
S-Video
IC401 I 2 C Comm.
DTV Controller
LVDS Signal
P503
LVDS Connector
-40-
IC706
Analog MUX
(Video switch)
IC107
SD Video Filter
IC705
Micro Processor
LGE Internal Use Only