2 Troubleshooting Procedures
NB300/305 Series Maintenance Manual 43
2.25 3G Troubleshooting
START
Perform diagnostic test
(Procedure 1)
W as a 3G problem detected?
Perform connector and replacement check
(Procedure 2)
Replace 3G antenna/unit
Replace system board
END
Yes
3G system is not
faulty. C ontinue
troubleshooting - refer
to Figure 2.1
No
Figure 2-17 3G troubleshooting process
Notes: 3G Antenna assemble rule as below:
color of antenna Assemble location
Red antenna Main/1
Blue antenna Aux/2
The 3G antenna wire, 3G unit or system board may each be the source of a 3G fault. Any of
these components may be damaged. To determine if the computer’s wireless LAN system is
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