LG MG180C Service Manual page 79

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4. TROUBLE SHOOTING
4.15.3 Checking PLL Circuit (Tx pass continued)
Check S _CLK,
S_EN, S_DATA
No
Signal is
Down load SW
norm al?
Yes
PLL circuit is OK .
See nest page to chec k
FEM & Mobile SW
S_CLK
S_DATA
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