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Flow Chart of Troubleshooting
9-30
9-16. PCS Receiver
RX ON
RF input : CH center freq : +67.7kHz
Cell Power : -60dBm
Yes
F101 pin13
≥ -65dBm
No
Resolder RFS100,C113,C154
Yes
F101 pin5,6
≥ -68dBm
Check F101 pin9,12
= L
No
No
Check ANT Switch
control circuit
Yes
Yes
Resolder F101
U911
pin 20 ,21
≥ -70dBm
No
Resolder C101, C104, L106
Yes
U104
pin11,12,17,32,33≥
2.8V
pin 10≥1.8V
U104 pin 4,5,6,7
≥ 0.2Vp_p
No
No
Check & Resolder
C116,C119,C121
And PMU Part
Yes
Yes
Resolder U104
Check UCP200
END
Содержание SGH-D880
Страница 31: ...7 Block Diagrams 7 1 7 1 Functional Block Diagram ...
Страница 32: ...Block Diagrams 7 2 7 2 BLUETOOTH FM Radio Block Diagram ...
Страница 33: ...8 PCB Diagrams 8 1 Main top view ...
Страница 34: ...PCB Diagrams 8 2 Main bottom view ...