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Flow Chart of Troubleshooting
9-24
9-16. PCS Receiver
RX ON
RF input : CH center freq : +67.7kHz
Amp : -50dBm
Yes
F100 Pin13
>= -65dBm
No
Resolder CN101,C103,L102
Yes
F100 5,6
>= -68dBm
Check F100
pin10,pin12 = L
No
No
Check ANT Switch
control circuit
Yes
Yes
Resolder F100
U106
pin 20 >= -70dBm
pin 21 >= -70dBm
No
Resolder C112, C120, L105
Yes
U106 pin
16,17,29,32,36
>=2.8Vpin10>=1.8
U106 pin 4,5,6,7
>= 0.2Vp
-
p
No
No
Check & Resolder
U102,C117,C123,C126
Yes
Yes
Resolder U106
Check UCP200
END
Summary of Contents for SGH-E250D
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