ͽͶ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ
FIG 27 Schematic of the FEM
FIG 28 Schematic of the WCDMA I, VIII Rx Path
FIG 29 Schematic of the WCDMA IV Rx Path
TP1
TP2
TP3
TP2
ͽͶ ͺΟΥΖΣΟΒΝ ΆΤΖ ΟΝΪ
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.
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 5 WCDMA Receiver Block sequence
FIG 26 WCDMA Rx Block
TP 1
TP 3
{
wGYG
To Next Page
Loading...
