Dcs Receiver - Samsung GT-S5200 Service Manual

Flow Chart of Troubleshooting

9-15. DCS Receiver

RX ON
RF input : CH center freq : +67.7kHz
Cell Power : -60dBm
Yes
F100 Pin11
≥ -65dBm
Yes
Check F100
pin14=L, pin10=L
Yes
U100
pin 15 ≥ -70dBm
pin 16 ≥ -70dBm
Yes
U100 pin 26,27,28,29
≥ 0.2Vp_p
No
Check UCP200
END
No
Resolder RFS100,C106,L101
No
Check control circuit and
Resolder F100
No
Resolder F100, C117, C118, L107
Yes
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U100
pin5,10,11,25,32,34,
36 ≥ 2.8V
pin4 ≥ 1.8V
Yes
9-36
Check & Resolder
No
C132,C123,C122
and PMU Part
Resolder U100