LG LG-V909DW - 4.5 GSM Receiver Block

4. TROUBLE SHOOTING
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Only for training and service purposes
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4.5 GSM Receiver Block
GSM Receiver stage is configuring of both FEM stage and MDM RF Receiver.
So, we need to just consider FEM operating and matching components.
Set the Phone Rx to be on
Check TP2, TP3
Signal exist?
Check FEM Block
yes
no
Change the board
Check TP1
Signal exist?
Check RF Switch (M/S)
no
yes
Set the Phone Rx to be on
Check TP2, TP3
Signal exist?
Check FEM Block
yes
no
Change the board
Check TP1
Signal exist?
Check RF Switch (M/S)
no
yes
Chart 4 GSM Receiver Block sequence
FIG 23 GSM Rx Block
{wGY{wGZ
{wGX