Flow Chart of Troubleshooting
9-12
9-2. RF
9-2-1. GSM Rx
Normal condition
catch the
channel ?
Check PAM100
pin 12
≥
-65
dbm ?
Check U101
pin 21,22
≥
-
65dBm ?
Yes
No
No
Check PAM100
pin 16
≥
-65
dbm ?
Yes
No
Yes
Check ANT,
R111,R100,C131,L110
Resolder or change
CON100, L103, C100, L102, C101, L104
Resolder or change
PAM100
Resolder or change
F100, F101
Resolder or change
UCP300
CONTINOUS RX ON
RF INPUT : 62CH
AMP : -50dbm
Check U101
pin 13 = 2.9V
Yes
Resolder or change
UCP200
Yes
No
No
1
2
3
4
5
Summary of Contents for SGH-C240
Page 36: ...Flow Chart of Troubleshooting 9 4 3 2 4 1 ...
Page 38: ...Flow Chart of Troubleshooting 9 6 1 2 2 ...
Page 40: ...Flow Chart of Troubleshooting 9 8 1 2 ...
Page 42: ...Flow Chart of Troubleshooting 9 10 1 ...
Page 45: ...Flow Chart of Troubleshooting 9 13 1 2 3 4 4 5 ...
Page 47: ...Flow Chart of Troubleshooting 9 15 1 2 3 4 4 5 ...
Page 48: ...Flow Chart of Troubleshooting 9 16 ...
Page 50: ...Flow Chart of Troubleshooting 9 18 1 2 3 2 ...