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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
3-16
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Tx On
Tx Level : 5
No
Check and change
PAM101
Check
PAM101, VBAT
Check
U201
4
5
6
7
3-2-4. GSM Tx
Nomal
Condition Catch
The Channel
RFS101 Pin #3
≥
30dBm ?
No
Check and change
RFS101
No
Yes
Check soldered status of
ANT, R127, C101, C104
Yes
Check soldered status of
C100, L100
No
Yes
PAM101
pin #1,28 : Low
pin # 27 : High
1
2
3
PAM101 pin #8
≥
30dBm ?
Yes
Check and change
U301
PAM101
pin #25 : 1.2V ?
Yes
No
PAM101
pin #26
≥
3.7V
?
No
Yes