Checking Regulator Circuit; Checking Vcxo Block; Checking Ant. Sw Module - LG U8130 Service Manual

4. TROUBLE SHOOTING

4.21.1 Checking Regulator Circuit

Refer to chapter 4.3 Checking Common Power Source Block.
IF you already check this point while Checking Common Power Source Block, You can skip this test.

4.21.2 Checking VCXO Block

Refer to chapter 4.4 Checking VCXO Block.
IF you already check this point while Checking VCXO Block, You can skip this test.

4.21.3 Checking Ant. SW Module

Refer to chapter 4.6 Checking Antenna Switch Block input logic.
IF you already check this point while Checking Antenna Switch Block input logic, You can skip this
test.
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