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Flow Chart of Troubleshooting
9-17
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FEM100
CHECK
pin2
≥
-65dBm ?
9-2-2. EGSM RX
YES
FEM100,RFS100
resolder or change
NO
YES
NO
FEM100 CHECK
pin22
≥
-65dBm ?
FEM100
resolder or change
YES
FEM100 CHECK
pin 7 : 2.9V ?
NO
YES
FEM100
pin 22 Vp-p
: 120mV ?
UCP300
resolder or change
NO
YES
GSM RX path component
resolder or change
NO
GSM Receiver is O.K?
END
YES
FEM100, UCP300
resolder or change
NORMAL CONDITION
catch the channel?
CHECK soldered
ANT
contact, C115,
L
117, L120
NO
Содержание GT-S3370
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