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(5) Checking RX IQ
Test Points
U505
U101
Figure 4-7
Waveform
Checking Flow
Check C518,C521
Check if there is any
Major difference
Refer to graph 4-4
C521
C518
Graph 4-4
Similar?
Yes
Re-download software and calibration again
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4. TROUBLE SHOOTING
Circuit Diagram
1
RXQN
2
RXIP
3
RXIN
4
TXIP
5
TXIN
6
TXQP
7
TXQN
No
No
Replace U505
QP
C518
39p
QN
IP
C521
39p
IN
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