LG CE500 Service Manual page 69

4. TROUBLE SHOOTING
Checking VCTCXO Circuit
Graph (a)
Check t he Output Frequency
Refer to Graph (b)
Check the Supply Voltage
Refer to Graph (a )
VCTCXO Circu it is O K
Yes
13 MHz O.K? See next Page to ch eck
FEM & Mobile SW
No
Yes
Changing X 701
2.75V OK?
No
Check U101( ABB)
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Graph (b)