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Flow Chart of Troubleshooting
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9-23
9-15. DCS Transmitter
U101 pin 12,13,28,
29 >=2.8V
Yes
Resolder U101
Check UCP201
END
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Check & Resolder RFOH
signal, RF13MHz,
RF PSU Part
Check +VBAT or PAM
control signal
Resolder or Change F101
Check F101, OK?
Yes
U101 pin 4,5,6,7
>= 1V
Resolder R113,C121
Resolder or Change PAM100
Check ANT Switch
control circuit
Change or Resolder
C115,C116,C131
PAM100 pin3
<= -11dBm
U101 pin16
<= 15dBm
-15dB
PAM100 pin15
>= 18dBm
F100 pin8
>= 18dBm
Check F100
pin9 = H (2.6V),
pin11 = L
TX ON (5Level)
Resolder RFS100,C101,L102
F100 Pin13
>= 20dBm
Содержание SGH-t329 Series
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