Samsung SGH-U700 Service Manual page 33

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