Gsm Transmitter - Samsung SGH-T329 Service Manual

9-13. GSM Transmitter

TX ON (5Level)
Yes
F100 Pin13
>= 20dBm
Yes
F100 pin10
>= 18dBm
Yes
PAM100 pin11
>= 18dBm
Yes
PAM100 pin4
<= -11dBm
Yes
U101 pin15
<=15dBm
18dB
Yes
U101 pin 4,5,6,7
>= 1V
Yes
Check UCP201
END
No
Resolder RFS100,C101,L102
No
No
Resolder or Change PAM100
No
No
Resolder R112,C120
No
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Check F100
pin9=L,
pin11=H(2.6V)
Yes
No
Check F101, OK?
Yes
No
U101 pin 12,13,28,
29>=2.8V
Yes
9-21
Flow Chart of Troubleshooting
No
Check ANT Switch
control circuit
Change or Resolder
L109,C112,C130
Resolder or Change F101
Check +VBAT or PAM
control signal
Check & Resolder RFOL
signal, RF13MHz,
RF PSU Part
Resolder U101