3. TROUBLE SHOOTING
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START
Check TP1
TP1 signal is exist?
Check TP2
TP2 signal is exist?
Check TP3/TP4
TP4 is over 21dBm?
TP3 signal is exist?
Check TP3
Signal is over 3dBm?
Check Transceiver
physical damage
or soldering condition
Check FL1103 Soldering
Yes
No
Check next step
Check FL1203 Soldering
Check FL1203 Soldering
Check U1300 Soldering
Replace U1500
Yes
No
No
YES
No
OK?
No
Yes
Yes