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Flow Chart of Troubleshooting
10-30
Tx On
RF Input : 9750CH
Tx Power : 24dBm
No
Check the Battery
Resolder or change
U200, C211, L205
Resolder or change
F201, F202
4
5
6
7
10-2-8. UMTS Tx
Nomal
Condition Catch
The Channel
RFS100 Pin
#1(c)
≥
20dBm
No
Resolder or Change
RFS100
No
Yes
Check soldered status of
R100, C102, ANT100, ANT200, R102
Yes
Resolder or Change
RFS100, L100, C100, L101
No
Yes
PAM100
pin #1,27 : Low
pin # 28 : High?
1
2
3
PAM100 pin #8
≥
18dBm ?
Yes
Resolder or change
UCP300
PAM100
pin #26
≥
3.4V?
No
Yes
F202
pin #3
≥
18dBm ?
No
Yes
F201
pin #1
≥
16dBm ?
Yes
No
Resolder U200 or U100
8
Summary of Contents for SGH-F400
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