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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 U106
Check & Resolder
U102,C117,C123,C126
RF26MHz, RF PSU Part
U106 pin
16,17,29,32,36>=2.8V
pin10>=1.8V
Resolder C104,C122,L104
Resolder F100
Check ANT Switch
control circuit
U106
pin 35 >= -70dBm
pin 36 >= -70dBm
U106 pin 4,5,6,7
>= 0.2Vp
-
p
F100 3,4
>= -68dBm
RX ON
RF input : CH center freq : +67.7kHz
Amp : -50dBm
Yes
No
END
Resolder CN101,C103,L102
F100 Pin13
>= -65dBm
Summary of Contents for SGH-E250D
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