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Flow Chart of Troubleshooting
10-24
10-11 GSM Transmitter
TX ON (5 LEVEL)
L105 > 2.5V
R103 > 1.5V
R104 > 1.5V
R105 < 0.5V
No
Check UCP300
Yes
No
Resolder F101 or Change F101
C107
≥
30dBm
Yes
Resolder RFS100 or Change RFS100
END
C200
≥
50mV
C201
≥
50mV
Check UCP300
No
Yes
C209
≥
0dBm
Check U202
No
R112
≥
0dBm
No
Resolder F102 or Change F102
Yes
Yes
R107 > 2.5V
C129 > 1.3V
C130 < 0.5V
No
Yes
C119
≥
0dBm
No
Resolder U102 or Change U102
Yes
Check UCP300
Summary of Contents for Vodafone SGH-L810V
Page 74: ...8 Block Diagrams 8 1 8 1 RF Block Diagram...
Page 75: ...9 PCB Diagrams 9 1 1 Main top...
Page 76: ...PCB Diagrams 9 2 2 Main bottom...
Page 93: ...www s manuals com...