LG P7200 - Page 69

(5) Checking TX IQ
4. TROUBLE SHOOTING
- 70 -
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
Redownload the Software
And calibrate
Check if there is
Any
Major Difference
Refer to Graph 4
-8
Similar?
Yes
No
Replace U602
TEST POINT
Waveform
Checking Flow
CIRCUIT
Graph 4-8