LG B2050 Service Manual - Page 80
SETTING : After initialize Agilent 8960, Test EGSM, DCS mode, Set the property of audio as PRBS or
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Page 80 highlights
Checking Flow 4 . TROUBLE SHOOTING SETTING : After initialize Agilent 8960, Test EGSM, DCS mode Set the property of audio as PRBS or continuous wave. Set the receiving volume of mobile as Max. START Check the state of NO contact of dual mode speaker (receiver) YES Reassemble receiver U202 works properly? NO Resolder or replace U202 YES Check the voltage at 5,7 pin of U202? YES Change main board NO Resolder R111, R114, C139, C140, C141 - 79 -
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- 79 -
4 . TROUBLE SHOOTING
SETTING : After initialize Agilent 8960, Test EGSM, DCS mode
Set the property of audio as PRBS or continuous wave.
Set the receiving volume of mobile as Max.
Checking Flow
START
Check the state of
contact of dual mode
speaker (receiver)
Reassemble receiver
Resolder or replace U202
Resolder R111, R114, C139, C140, C141
U202 works
properly?
Check
the voltage
at 5,7 pin of U202?
Change main board
YES
NO
NO
NO
YES
YES