LG VX5400 Service Manual page 55

Check if there is any major difference referring
To Figure 4.1.2 (e). Is any signal detected at
Check if there is any major difference referring
To Figure 4.1.2 (e e ) Is any signal detected at
Check if there is any major difference referring
To Figure 4.1.2 (f ). Is any signal detected at
RF signal path is OK. See next page to Rx I/Q data signal
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Only for training and serving purposes
Checking Flow
Checking Flow
Start
Check pin2 at U100
that point?
YES
Check pin1 at U100
that point?
YES
Check pin3 at U101
that point?
YES
NO
NO
NO
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Replace U100
Check L100, C101
Replace U101
LGE Internal Use Only