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2 Troubleshooting Procedures
NB250/NB255 Series Maintenance Manual
1
Chapter 2 Contents
2.1 Troubleshooting Introduction ......................................................................................3
2.2 Troubleshooting Flowchart..........................................................................................3
2.3 Power Supply Troubleshooting ...................................................................................9
2.4 Display Troubleshooting ...........................................................................................14
2.5 Keyboard Troubleshooting ........................................................................................17
2.5 External USB Devices Troubleshooting..........................................................................19
2.6 TouchPad Troubleshooting.............................................................................................21
2.7 Speaker Troubleshooting ................................................................................................23
2.6 Wireless LAN Troubleshooting.................................................................................25
2.7 Camera Troubleshooting ...........................................................................................27
2.8 Bluetooth Troubleshooting ........................................................................................29
2.9 2in1 card Troubleshooting.........................................................................................31
2.10 HDD/SSD Troubleshooting.......................................................................................33
2.13 CRT Troubleshooting ....................................................................................................36
2.14 LAN Troubleshooting....................................................................................................38
2. 17 3G Troubleshooting ............................................................................................44