LG lg530g Service Manual page 59

4.3.4 Checking GSM Tx part
Setup Test Equipment
Cell Power = -60dBm
Tx Power Level Set
(GSM=5, DCS=0, PCS=0)
Is the level of
TP4, TP5 same
to Table.1?
Yes
TP2, 30dBm over?
TP3, 33dBm over?
Yes
Check TP1
GSM850, EGSM 32dBm
DCS, PCS 29dBm
over?
Re-download & Calibration
LGE Internal Use Only
No
TP4 : Check U200
TP5 : Check VBAT Line
Remove U100 and check
No
the power of pin1, pin8.
(on board)
Yes
No
The power of pin1, pin8
Is over 0dBm?
Yes
Replace U100
TP3
TP2
TP1
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4. TROUBLE SHOOTING
No
Check U200
TP4
TP5
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