LG F3000 - Page 63

(4) Checking TX IQ
4. TROUBLESHOOTING
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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
Re-download
the Software
And calibrate
Check if there is
Any
Major Difference

Refer to Graph 4-9
Similar?
Yes
No
Replace U500
TEST POINT
CIRCUIT
Checking Flow
Waveform
Graph 4-9