Wcdma Receiver Block - LG -V909DW Service Manual

4.6 WCDMA 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.
Input -30dBm at antenna port by using Signal Generator Input -30dBm at antenna port by using Signal Generator
LGE Internal Use Only
Wrong Rx Level Wrong Rx Level
Check TP1 Check TP1
-30dBm Signal exist? -30dBm Signal exist?
yes yes
Check TP2, TP3, TP4 Check TP2, TP3, TP4
-31dBm Signal exist? -31dBm Signal exist?
yes yes
Check TP5, TP6, TP7 Check TP5, TP6, TP7
-33dBm Signal exist? -33dBm Signal exist?
yes yes
Check MDM RF Block Check MDM RF Block
Chart 5 WCDMA Receiver Block sequence
no no
Check RF Switch Check RF Switch
no no
Check FEM Block Check FEM Block
no no
Check Duplexer Block Check Duplexer Block
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4. TROUBLE SHOOTING
Only for training and service purposes