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2 Troubleshooting Procedures
NB250/NB255 Series Maintenance Manual
8
Other problems that are not covered by the diagnostics program may be discovered by a
user.
1. If an error is detected when using an external USB device, perform the External USB
Devices Troubleshooting procedures in Section 2.6
2. If an error is detected when using the speakers, perform the Speaker Troubleshooting
procedures in Section 2.8
3. If an error is detected when using the Wireless LAN, perform the Wireless LAN
Troubleshooting procedures in Section 2.10
4. If an error is detected when using the Bluetooth, perform the Bluetooth
Troubleshooting procedures in Section 2.12
5. If an error is detected when using the MIC, perform the MIC troubleshooting
procedures in Section 2.16