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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
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9-
20
9-13. EGSM Receiver
Check UCP200
No
No
Yes
Yes
Yes
Yes
C144, C145
>= 1V
Resolder U102
Check & Resolder
U102, R103,R105,R106
RF26MHz, RF PSU Part
Check U102
pin23,26,28,31
>=2.7V
U102 pin7,8,9,10
>= 1V
END
No
No
No
Yes
Yes
Yes
Resolder C119, C121, L114
Resolder F101
Check ANT Switch
control circuit
U102
pin29 >= -70dBm
pin30 >= -70dBm
F101 pin5, pin6
>= -65dBm
Check F101
pin9,10,12 = L
RX ON
RF input : 62CH
Amp : -50dBm
Yes
No
Resolder RFS100, C101
F101 pin8
>= -65dBm
Summary of Contents for SGH-E780
Page 9: ...Specification 2 4 ...