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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
9-33
9-16. DCS Transmitter
U101 pin1, 2, 3, 4
>= 1V
Check PAM100
pin4, 6 = H
Check U101 pin
5, 15, 17, 20, 31, 38
>=2.7V
Yes
Resolder U101
Check UCP200
END
No
Yes
Check & Resolder
TCX100(26MHz),
RF PSU Part
Yes
Yes
Yes
Yes
Yes
Yes
Check +VBAT or PAM100
control signal
Resolder or Change PAM100
Yes
Resolder C108, C112, L110
Check ANT Switch
control circuit
Change or Resolder MOD100
PAM100 pin1
>=
-11dBm
PAM100 pin18
>= 18dBm
MOD100 pin11
>= 18dBm
Check MOD100
pin12 = L,
pin10 = H
TX ON (0Level)
Resolder CN100, C102
MOD100 pin8
>= 20dBm
No
No
No
No
No
No
No
Summary of Contents for SGH-E740S
Page 35: ...8 PCB Diagrams 8 1 Top ...
Page 36: ...PCB Diagrams 8 2 Bottom ...