Samsung SGH-E200 Service Manual - Page 56
PCS Receiver
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Flow Chart of Troubleshooting 9-16. PCS Receiver RX ON RF input : 660CH center freq : 1959.8MHz Amp : -50dBm Yes F100 Pin13 No >= -65dBm Resolder RFS100,C103,L106 Yes F100 pin5,6 >= -68dBm Yes U101 pin 21 >= -70dBm pin 20 >= -70dBm No Check F100 No Check ANT Switch pin9,pin11 = L control circuit Yes No Resolder C101, C102, L103 Resolder F100 Yes No U101 pin 4,5,6,7 >= 1V Yes Check UCP200 U101 pin 11,12 16,17,32,33>=2.8V Yes No Check U101, OSC100 RF26MHz, RF PSU Part Resolder U101 END 9-24 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
9-24
9-16. PCS Receiver
RX ON
RF input : 660CH center freq : 1959.8MHz
Amp : -50dBm
Yes
F100 Pin13
>= -65dBm
No
Resolder RFS100,C103,L106
Yes
F100 pin5,6
>= -68dBm
Check F100
pin9,pin11 = L
No
No
Check ANT Switch
control circuit
Yes
Yes
Resolder F100
U101
pin 21 >= -70dBm
pin 20 >= -70dBm
No
Resolder C101, C102, L103
Yes
U101 pin 11,12
16,17,32,33>=2.8V
U101 pin 4,5,6,7
>= 1V
No
No
Check
U101, OSC100
RF26MHz, RF PSU Part
Yes
Yes
Resolder U101
Check UCP200
END