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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
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9-21
9-13. GSM Transmitter
U101
pin12,13,28,29
>=2.8V
Yes
Resolder U101
Check
UCP200
END
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Check & Resolder RFLO
signal, RF13MHz,
RF PSU Part
Check +VBAT or PAM
control signal
Resolder or Change F100
Check Pam100
+VBATT(pin17)
Yes
U101
pin 4,5,6,7
>= 1V
Resolder
R102
Resolder or Change PAM100
or
L109, C110
Change or Resolder
F100
Change or Resolder
L109,C110,L111
PAM100
pin4
<= -11dBm
PAM100
pin4
<=
-15dB
PAM100
pin11
>= 18dBm
F100
pin10
>= 18dBm
Check F100
pin9 = L
pin12 = H(2.6V)
TX ON (5Level)
Resolder
CN100,C104
F100
Pin13
>= 20dBm