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2 Troubleshooting Procedures
NB250/NB255 Series Maintenance Manual
2
Figures
Figure 2-1 Troubleshooting flowchart (1/2) ....................................................................... 5
Figure 2-1 Troubleshooting flowchart (2/2) ...................................................................... 6
Figure 2-2 Power Supply Troubleshooting Process............................................................ 9
Figure 2-3 Display troubleshooting process .....................................................................14
Figure 2-4 Keyboard troubleshooting process ..................................................................17
Figure 2-5 External USB device troubleshooting process ................................................20
Figure 2-6 TouchPad troubleshooting process.................................................................. 25
Figure 2-7 Speaker troubleshooting process .....................................................................27
Figure 2-8 Wireless LAN troubleshooting process........................................................... 29
Figure 2-9 Camera troubleshooting process .....................................................................31
Figure 2-10 Bluetooth troubleshooting process…..……………………………….……….33
Figure 2-11 2 in 1 card troubleshooting process……………………………..…….………35
Figure 2-12 HDD/SSD troubleshooting process……………………….……..…………..37
Figure 2-13 CRT troubleshooting process ……………………………………………….39
Figure 2-14 LAN troubleshooting process ……………………………………………….41
Figure 2-15 MIC troubleshooting process ……………………………………………….....43
Figure 2-16 3D sensor troubleshooting process ……………………………………………45
Figure 2-17 3G troubleshooting process …………………………………………………...47
Tables
Table 2-1 Battery LE
D .......................................................................................................10
Table 2-2 DC-IN LED
........................................................................................................ 11