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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
9-35
9-17. PCS Receiver
Check UCP200
No
No
Yes
Yes
Yes
Resolder U101
Check & Resolder
TCX100(26MHz),
RF PSU Part
Check U101 pin
5, 15, 17, 20, 31, 38
>=2.7V
U101 pin1, 2, 3, 4
>= 1V
END
No
No
No
Yes
Yes
Yes
Resolder L104, L105, L106
Resolder MOD100
Check ANT Switch
control circuit
U101 pin22, 23
>= -70dBm
MOD100 pin5, 6
>= -65dBm
Check MOD100
pin10, 12 = L
RX ON
RF input : 661CH
Amp : -50dBm
Yes
No
Resolder CN100, C102
MOD100 pin8
>= -65dBm
Summary of Contents for SGH-E740S
Page 35: ...8 PCB Diagrams 8 1 Top ...
Page 36: ...PCB Diagrams 8 2 Bottom ...