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LG 42LH20 Service Manual page 52

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Main PWB X100 and X1005 Check
Main PWB X100 and X1005 Check
IC100 Microprocessor Crystal
2.28Vp/p
4.95Vp/p
12Mhz
25Mhz
X100
Set on or off
Only when set is on
X400
X1005
Location
X100
Location
X1005
Tuner Control IC1004 Crystal
MAIN PWB
February 2009 42LH20
52

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