LG GD580 - Checking GSM Block; Trouble Shooting

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Only for training and service purposes
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4. Trouble Shooting
4
.
19
Ch
ec
ki
ng
GSM
Bl
oc
k
start
2. Check
VCXO Block
5. Check
RF TX Path
4. Check
Control Signal
Re-download SW, Cal
3. Check
FEM Module
6. Check
RF RX Path
1. Check
VRAD_2V8
Figure 4-19. GSM Block (Bottom)
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
⑤
④
②
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