LG P7200 - Page 62

4. TROUBLE SHOOTING
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(4) Checking RX IQ
Redownload software and calibration again
Similar?
No
Replace U602
Yes
No
Check C619,C620.
Check if there is any
Major difference
Refer to graph 4-4
C619
39p
C614
33p
4.7uC613
C615 0.1u
VBAT
C612 22u
VCC1
6
1
VCC3
5
Q+_TX_Q+
Q-_TX_Q-
4
I+_TX_I+
2
3
I-_TX_I-
7
PED_SELECT
C620
39p
IP
IN
QP
QN
TEST POINT
Checking Flow
Waveform
CIRCUIT
Graph 4-4