LG KG300 Service Manual page 54

PA module (U600)
Test point part Function
U600, pin1 DPCS_IN
U600, pin2 BS
U600, pin3 TXEN
U600, pin4 VBAT
U600, pin5 CEXT
U600, pin6 VRAMP
U600, pin7 EGSM_IN
U600, pin10 EGSM_OUT
U600, pin16 DPCS_OUT
Typical value Description
DCS PCS RF input
2.8V Band select logic input
2.8V TX enable logic input
3.8V(3.4~4.2V) Battery supply connection
by pass
Analog signal used to control the output power
EGSM RF input
EGSM RF output
DCS, PCS RF output
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4. Troubleshooting