LG KF700Q Service Manual page 117

4. TROUBLE SHOOTING
4.16.4. Checking UMTS PAM Control Block
• PAM control signal
1. PWR_DET : UMTS Tx Power Detected value (Check R116)
2. TX_AGC_ADJ : UMTS RTR6280 Tx Amp Gain Control
3. VREG_RF_2.85V : UMTS PAM enable (about 2.85V)
4. VREG_WCDMA_PA : UMTS PAM Main Voltage ( 3V < +VPWR < 4.2V)
5. PA_ON 1: Turns the PA on and off
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