LG -V909DW Service Manual page 68

4.3.4 Checking RF Tx block
GSM Transmit Block
Is TP3 or 4 over below spec? Is TP3 or 4 over below spec?
Is TP5 or 6 over below spec? Is TP5 or 6 over below spec?
LGE Internal Use Only
Wrong Power Level Wrong Power Level
BATT Power okay? BATT Power okay?
TP1 TP1
yes yes
FEM Output is okay? FEM Output is okay?
TP2 TP2
no no
GSM850 : 32dBm GSM850 : 32dBm
PCS, DCS : 29dBm PCS, DCS : 29dBm
no no
GMSK-Typical 10dBm GMSK-Typical 10dBm
8PSK-Typical 3.5dBm 8PSK-Typical 3.5dBm
no no
Check MDM RF Block Check MDM RF Block
Chart 2 GSM Transmit Block sequence
No No
Check a Power Check a Power
yes yes
Check RF switch Check RF switch
yes yes
FEM Check FEM Check
yes yes
PAM Check PAM Check
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4. TROUBLE SHOOTING
Only for training and service purposes