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LG VX8500 Service Manual page 85

Dual band cdma pcs/cellular/w/gps cdma mobile phone
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VX8500
4.2.2.9. Check Mobile Switch
Test Point
Checking Flow
RF_OUT
Start
Check U100 Pin1, 2
RF_IN
RF_OUT
Refer to Graph4.2.2.9
YES
Mobile Switch is OK
Similar?
U100
NO
Replace U100
RF IN
Circuit Diagram
Waveform
RF_OUT
RF IN
RF_IN
RF OUT
Graph 4.2.2.9
93
LG Electronics Inc.

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