LG LG9200 Service Manual page 83

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4. TROUBLE SHOOTING
RX Part Trouble Shooting(7)
5. Check control signals
➀ PDNB, S_EN, S_CLK, S_DATA
U504
S_CLK
_S_EN
(7pin)
(9pin)
PDNB
S_EN
S_CLK
S_DATA
PDNB
S_DATA
(3pin)
(5pin)
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