Gsm Receiver Block - LG -V909DW Service Manual

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.
LGE Internal Use Only
Set the Phone Rx to be on Set the Phone Rx to be on
Check TP1 Check TP1
Signal exist? Signal exist?
yes yes
Check TP2, TP3 Check TP2, TP3
Signal exist? Signal exist?
no no
Change the board Change the board
Chart 4 GSM Receiver Block sequence
FIG 23 GSM Rx Block
no no
Check RF Switch (M/S) Check RF Switch (M/S)
yes yes
Check FEM Block Check FEM Block
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4. TROUBLE SHOOTING
Only for training and service purposes