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SGH-E620 Flow Chart of Troubleshooting
2-
19
2-9. GSM Receiver
Normal condition
catch the
channel ?
Check F700
pin 13
≥
-65 dbm ?
Check U700
pin 20,21
≥
-65dBm ?
Yes
No
No
Check F700
pin 1,2
≥
-65
dbm ?
Yes
No
Yes
Check ANT,
C716
Resolder or change
C716
,
R706
Resolder or change
F700
Resolder or change
C724
,
C725
,
L701
Resolder or change
U200
CONTINOUS RX ON
RF INPUT : 62CH
AMP : -50dbm
Check U700
pin 32 = 2.8V
Yes
Resolder or change
U100
Yes
No
No
1
2
3
4
5
Содержание SGH-E620
Страница 7: ...SGH E620 Flow Chart of Troubleshooting 2 4 1 2 2 2 3 4 4 5 ...
Страница 16: ...SGH E620 Flow Chart of Troubleshooting 2 13 1 1 1 ...
Страница 23: ...SGH E620 Flow Chart of Troubleshooting 2 20 1 2 3 4 5 ...
Страница 25: ...SGH E620 Flow Chart of Troubleshooting 2 22 1 2 3 4 5 ...
Страница 27: ...SGH E620 Flow Chart of Troubleshooting 2 24 1 2 3 4 5 ...