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Flow Chart of Troubleshooting
9-25
9-14. DCS Receiver
RX ON
RF input : CH center freq : +67.7kHz
Amp : -50dBm
No
Resolder RFS100,C101,L141
Yes
Check ANT Switch
control circuit
F101 pin1,2
>= -68dBm
Check F101
pin10,pin12 = L
No
No
Resolder F101
Yes
Yes
No
U102
pin 35 >= -74dBm
pin 36 >= -74dBm
Yes
No
Resolder L120,L126,C110
U102 pin 7.8.9.10
>= 1V
Yes
No
Check U102 pin
23,26,31 >=2.7V
Check & Resolder
U102, R138, C114
RF26MHz, RF PSU Part
Yes
Resolder U102
Check UCP200
END
Yes
F101 Pin8
>= -65dBm
Summary of Contents for SGH-E380
Page 32: ...8 PCB Diagrams 8 1 Top ...
Page 33: ...PCB Diagrams 8 2 Bottom ...