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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
9-28
9-17. PCS Transmitter
Check U102
pin23, 26, 31
>=2.7V
No
Resolder U102
Check UCP200
END
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
Check & Resolder RFLO
signal, RF13MHz,
RF PSU Part
Check +VBAT or PAM
control signal
Resolder or Change PAM100
Check PAM100
pin 3,4,5,6,7 OK?
Yes
U102 pin 6,7,8,9
>= 1V
Resolder C107,L101,
C108,L104,C109
Resolder C125,L110,C140
Change or Resolder F101
Check ANT Switch
control circuit
PAM100 pin1
<= -11dBm
U102
pin2
<= -15dBm
PAM100 pin14
>= 18dBm
F101 pin13
>= 18dBm
Check F101
pin12 = H(2.68V)
pin10 = L
TX ON (5Level)
Resolder RFS100,C101,L141
F101 Pin8
>= 20dBm
Summary of Contents for SGH-E380
Page 32: ...8 PCB Diagrams 8 1 Top ...
Page 33: ...PCB Diagrams 8 2 Bottom ...