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Flow Chart of Troubleshooting
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9-33
9-17. PCS Transmitter
DUF100 Pin8
>= 20dBm
Resolder
RFS101, C101, L104
TX ON (0Level)
Check DUF100
pin12 = H (2.68V),
pin9,10 = L
DUF100 pin13
>= 18dBm
PAM100 pin18
>= 18dBm
U102 pin2
>= -15dBm
PAM100 pin4
>= -11dBm
Change or Resolder
DUF100
Check ANT Switch
control circuit
Resolder C128, C129, R126
Resolder R118, R119, R120,
L112, C133, C134
U102 pin7,8,9,10
>= 1V
Check PAM100
VBAT, pin2,5,6,7
OK?
Resolder or Change PAM100
Check VBAT or PAM
control signal
Check & Resolder RFLO
signal, RF13MHz,
RF PSU Part
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No
No
No
No
No
No
No
Yes
No
END
Check UCP200
Resolder U102
Yes
Check U102
pin 23,26,31
>= 2.7V
OK?
Содержание SGH-P200
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Страница 31: ...PCB Diagrams 8 2 Bottom ...