LG KT520 Service Manual page 155

4. TROUBLE SHOOTING
4.20.1 Checking Regulator Circuit
Refer to 4.16 Checking Power Source block
IF you already check this point while checking power source block (4.15), You can skip this test.
4.20.2 Checking VCXO Block
Refer to 4.17 Checking VCXO block
IF you already check this point while checking VCXO block (4.17), You can skip this test.
4.20.3 Checking Front End Module
Refer to 4.19.2 Checking Ant. SW Module
IF you already check this point while checking Ant. SW module (4.19.2), You can skip this test.
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