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LG KD3500 Service Manual page 33

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4.2.2 Check Duplexer & Mobile SW
TEST POINT
U101 PIN1
Mobile S/W in
Circuit Diagram
Circuit Flow
Check DP101 Pin6
Level is Appear?
DUP_OUT
Check U101 Pin1
Level is Appear?
Replace QSC6010
Mobile S/W
Duplexer
DP101
NO
Replace DP101
YES
NO
Replace U101
YES
DP101 PIN6
DP_out

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Rd3500

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