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11-2-5. DCS/PCS TX
U404 pin 13 :
about 30dBm?
Yes
②
C421,RFS400
R405,ANT401
check & change
No
No
⑦
U101
pin A13, B10,
C112,
C114
check or resolder
No
①
U101
check or resolder
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No
pin 3 : 2.6V ?
No
PAM406 pin19:
③
check & change
PAM406
pin16, 17: 3.7V?
Yes
PAM406
pin 6 : 2.9V ?
Yes
PAM406 pin1
about 5dBm ?
Yes
PAM406
pin 2 : 0V?
pin 3 : 3V?
Yes
⑤
①
PAM406
check & change
U405
pin16,41,31,29
: 2.9V ?
Yes
U405
pin35 : 26MHz ?
Vp-p : 950mV ?
Yes
U405
pin25,26,27,28
Vp-p=1V ?
Yes
⑧
U405
check or resolder
SAMSUNG Proprietary-Contents may change without notice
No
DUF400
Yes
about 30dBm?
Yes
DUF400
No
BATTERY
check & change
④
No
U405 pin21
check
No
U101
check
⑥
No
TCX400
check or resolder
11-28
Flow Chart of Troubleshooting
①
U101
check & change
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