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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
7-
27
7-16. EGSM Transmitter
TX ON (5Level)
Yes
F100 Pin8
>= 20dBm
Yes
Resolder CN100, C146
No
F100 pin11
>= 18dBm
Check F100
pin10 = H (2.68V),
pin9, pin12 = L
No
Yes
Check ANT Switch
control circuit
Yes
Change or Resolder F100
No
U103 pin16
>= 18dBm
Yes
Resolder L116,C131
Check U102
+VBAT, pin7,14
OK?
No
U103 pin12
>=
-11dBm
Yes
Yes
Resolder or Change U103
Check +VBAT or U103
control signal
No
No
U102 pin7,8,9,10
>= 1V
Check U102
pin23,26,28,31
>=2.7V
OK?
No
No
Check & Resolder
U102, R103,R105,R106
RF26MHz, RF PSU Part
Yes
Resolder U102
Yes
Check U200
END