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Flow Chart of Troubleshooting
9-24
9-11. GSM850 Receiver
Check & Resolder
C132,C123,C122
and PMU Part
Resolder U100
RX ON
RF input : CH center freq : +67.7kHz
Cell Power : -60dBm
Yes
F100 Pin11
≥
-65dBm
No
Resolder RFS100,C106,L101
Yes
No
Resolder F100, C107, C108, L104
U100
pin 19
≥
-70dBm
pin 20
≥
-70dBm
Yes
No
U100
pin5,10,11,25,32,34,
36
≥
2.8V
pin4
≥
1.8V
U100 pin 26,27,28,29
≥
0.2Vp_p
No
Yes
Yes
Check UCP200
END
Содержание GT-S5200
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