LG L705ix Service Manual page 72

4.3.3 Checking UMTS PAM Control Block
• PAM control signal
TP1: PWR_DET : UMTS Tx Power Detected value.
TP2, 2*: PA_ON0, PA_ON1: UMTS2100, UMTS800 PAM enable (about 2.6V)
TP3, 3*: +VPWR : UMTS2100, UMTS800 PAM Main Voltage (3V < +VPWR < 4.2V)
TP2
+VPWR
C145 C146 2.2u
0.01u 120p
C144
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Only for training and service purposes
TP2*
R115
PWR_DET
75
C192
C168
0.01u 68p
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4. TROUBLE SHOOTING
TP1
TP3
TP3*
KRX102E
Q101 EQBA0000602
C147 1000p
C158 0.1u
TP1 : R115
TP2 : C147
+VPWR
TP2*: C158
TP3 : C144
C166
2.2u
TP3* : C166
PA_ON0
VREG_TCXO_2.85V
PA_ON1
LGE Internal Use Only