Samsung GT-S5200 - Gsm850 Receiver

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Flow Chart of Troubleshooting
9-24
9-11.
GSM850 Receiver
Check
&
Resolder
C1
32,
C1
23,
C1
22
and PMU Part
Resolder
U100
RX ON
RF input
:
CH center freq
: +67.7
kHz
Cell Power
:-60
dBm
Yes
F100 Pin11
≥
-65
dBm
No
Resolder RFS100,C10
6,
L10
1
Yes
No
Resolder F100, C1
07,
C1
08,
L104
U100
pin
19
≥
-70
dBm
pin
20
≥
-70
dBm
Yes
No
U100
pin5,10,11,25,32,34,
36
≥
2.8V
pin4
≥
1.8V
U100 pin
26,27,28,29
≥
0.2
Vp_p
No
Yes
Yes
Check UCP200
END