LG VX11000 Service Manual page 73

VX11000
Checking Flow
Checking Flow
Start
Check pin3 at U1009
Check if there is any major difference referring RTR6500 circuit is OK. See next page
YES
To Figure 4.2.1.3 (a). Is it similar?
NO
Check pin16 at U1009(TX _ON signal )
Check TX_ON signal & MSM
whether it is higher than 2.5V.
NO
YES
Check C1101 at U 1009 (TCXO signal)
Check TCXO circuit.
referring to Figure 4.2.1.3 (b). Is it similar?
NO
YES
Replace U1005
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