3. TROUBLE SHOOTING
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START
No
No
No
No
OK?
Check next step
Check TP1 Signal exist?
Check TP2 Signal exist?
Check TP3 Signal exist?
Check TP4 Signal exist?
Check Transceiver physical damage
or soldering condition
Check SW2002 Soldering
Check FL2001 Soldering
Check FL2006 Soldering
Check FL2003 Soldering
Replace U2002
Yes
Yes
Yes
Yes
Not good