LG S5000 Service Manual page 61

4. TROUBLE SHOOTING
(5) Checking TX IQ
Test Points
U501
Figure 4-10
CIRCUIT
XOUT
BIP
BIN
BQP
BQN
Checking Flow
C522
C524
8
7
6
5
Check if there is
Any Major Difference
Refer to Graph 4 -8
Redownload the Software
And calibrate
Waveform
Graph 4-7
C522
39p
C524
39p
No
Similar?
Yes
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IP
IN
QP
QN
Replace U101