Samsung SGH-C240 service manual.pdf
Samsung SGH-C240 service manual.pdf
Samsung SGH-C240 service manual.pdf
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Flow Chart of Troubleshooting<br />
9-2-2. DCS Rx<br />
CONTINOUS RX ON<br />
RF INPUT : 698CH<br />
AMP : -50dbm<br />
Normal condition<br />
catch the<br />
channel ?<br />
Yes<br />
Check PAM100<br />
pin 12 ≥ -65<br />
dbm ?<br />
Yes<br />
Check PAM100<br />
pin 18 ≥ -65<br />
dbm ?<br />
Yes<br />
Check U101<br />
pin 19,20 ≥-<br />
65dBm ?<br />
Yes<br />
Check U101<br />
pin 13 = 2.9V<br />
Yes<br />
Resolder or change<br />
U300<br />
No<br />
No<br />
No<br />
No<br />
No<br />
9-14<br />
Check ANT,R111,R101,C129,L108<br />
Resolder or change<br />
CON100, L103, C100, L102, C101, L104<br />
Resolder or change<br />
PAM100<br />
Resolder or change<br />
F100, F101<br />
Resolder or change<br />
UCP200<br />
1<br />
2<br />
3<br />
4<br />
5
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