LG -E730 Service Manual page 106

Set up Test Equipment
Cell power = -60dBm
Set up Set up Test Equipment
Tx power level set
GSM850/EGSM=5, DCS/PCS=0
GSM850/EGSM=5, DCS/PCS=0
Over 31 dBm or TP2 Over
Over 31 dBm or TP Over
PA_R0
PA_R0
Check TP3 or TP4
Over 15 dBm?
Change the board
LGE Internal Use Only
<Power levels for each modes table>
Cell power = -60dBm
Tx power level set
Check TP1
Check TP1
8 dBm ?
28 dBm ?
No
No
Check TP
Check TP2
PA_R0 ≥ .6 V or
2.6 V or
PA_R0 ≤ 1.35 V
1.35 V
No
No
Check TP3 or TP4
Over 15 dBm?
No
No
Change the board
<Checking Flow>
Yes
Yes
RF Tx Level is OK
RF Tx Level is OK
Yes
Yes
Check MSM855
Check MSM8255
Yes
Yes
Check QTR800
Check QTR8200
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4. TROUBLE SHOOTING
Only for training and service purposes