LG GD580 Service Manual page 161

4. Trouble Shooting
C. GSM RF Transceiver Check
Figure 4-19-6. EGSM/DCS/PCS Transceiver (RF3000)
Check GSM RF Transceiver Check GSM RF Transceiver
Output power at .
LGE Internal Use Only
`
DCS/PCS Tx
(R123)
EGSM/DCS/PCS
>5dBm
Yes
See Next page to check Tx path
- 162 -
Vapc
(PIN 25)
RF3000
(U102)
No No
Redownload SW
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Only for training and service purposes
GSM Tx (R124) GSM Tx (R124)