LG F3000 - Page 56

4. TROUBLESHOOTING
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(3) Checking RX IQ
Redownload software and calibration again
Similar?
No
Replace U500
Yes
Check C510,C511.
Check if there is any
Major difference
Refer to graph 4-4
C510
39p
C511
39p
C513C512
VBAT
VCC1
6
1
VCC3
5
Q+_TX_Q+
Q-_TX_Q-
4
I+_TX_I+
2
3
I-_TX_I-
QP
QN
IP
IN
TEST POINT
Checking Flow
Waveform
CIRCUIT
Graph 4-4