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Flow Chart of Troubleshooting
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9-23
9-11 GSM Transmitter
TX ON (5 LEVEL)
C157 > 2.5V
C165 < 0.5V
C166 > 1.5V
C174 < 0.5V
No
Check UCP301
Yes
No
Resolder or Change MOD101
L105
≥
30dBm
Yes
Resolder RFS100 or Change RFS100
END
C101
≥
50mV
C102
≥
50mV
No
Yes
C115
≥
0dBm
Check U101
No
F104 PIN4
≥
0dBm
No
Resolder or Change F104
Yes
Yes
R114 > 2.5V
No
Yes
Check UCP301
Check UCP301
Summary of Contents for SGH-G400
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