LG LG-E730 - Page 106

4. TROUBLE SHOOTING
- 106 -
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<Power levels for each modes table>
Check TP1
Over 31 dBm or TP2 Over
28 dBm ?
Check TP2
PA_R0  2.6 V or
PA_R0  1.35 V
Check TP3 or TP4
Over 15 dBm?
Set up Test Equipment
Cell power = -60dBm
Tx power level set
GSM850/EGSM=5, DCS/PCS=0
RF Tx Level is OK
Yes
No
Check MSM8255
Yes
No
Check QTR8200
Yes
Change the board
No
<Checking Flow>
Set up Set up Test Equipment
Cell power = -60dBm
Tx power level set
GSM850/EGSM=5, DCS/PCS=0
Check TP1
Over 31 dBm or TP2 Over
28 dBm ?
RF Tx Level is OK
Yes
No
Change the board
Check TP2
PA_R0 ≥ 2.6 V or
PA_R0 ≤ 1.35 V
Check MSM8255
Yes
No
Check TP3 or TP4
Over 15 dBm?
Check QTR8200
Yes
No