Samsung SGH-E200 Service Manual - Page 54
DCS Receiver
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Flow Chart of Troubleshooting 9-14. DCS Receiver RX ON RF input : 698CH center freq : 1842.4MHz Amp : -50dBm Yes F100 Pin13 No >= -65dBm Resolder RFS100,C103,L106 Yes F100 pin3,4 >= -68dBm Yes U101 pin 22 >= -70dBm pin 23 >= -70dBm No Check F100 pin9,pin11 = L No Check ANT Switch control circuit Yes No Resolder C104, C105, L104 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 9-22 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
9-22
9-14. DCS Receiver
Check F100
pin9,pin11 = L
Check UCP200
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Resolder U101
Check
U101, OSC100
RF26MHz, RF PSU Part
U101 pin 11,12
16,17,32,33>=2.8V
Resolder C104, C105, L104
Resolder F100
Check ANT Switch
control circuit
U101
pin 22 >= -70dBm
pin 23 >= -70dBm
U101 pin 4,5,6,7
>= 1V
F100 pin3,4
>= -68dBm
RX ON
RF input : 698CH center freq : 1842.4MHz
Amp : -50dBm
Yes
No
END
Resolder RFS100,C103,L106
F100 Pin13
>= -65dBm