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Flow Chart of Troubleshooting
9-22
9-14. DCS Receiver
Check F100
pin10,pin14 = L
Check UCP201
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Resolder U106
Check & Resolder
C116,C119,C121
And PMU Part
U106 pin16,17,29,
32,36 ≥2.8V
pin 10≥1.8V
Resolder C109, C110, L106
Resolder F100
Check ANT Switch
control circuit
U106
pin 22 ≥ -70dBm
pin 23 ≥ -70dBm
U106 pin 4,5,6,7
≥ 0.2Vp_p
F100 5,6
≥ -68dBm
RX ON
RF input : CH center freq : +67.7kHz
Cell Power : -60dBm
Yes
No
END
Resolder RFS100,C103,L100
F100 Pin11
≥ -65dBm
Summary of Contents for SGH D900i - Ultra Edition 12.9 Cell Phone 60 MB
Page 36: ...8 PCB Diagrams 8 1 Top ...
Page 37: ...PCB Diagrams 8 2 Bottom ...