NBLB2 Service Manual
109
If the diagnostics program cannot detect an error, the problem may be intermittent.
The test program should be executed several times to isolate the problem. When a
problem has been located, perform the appropriate troubleshooting procedures as
follows:
If an error is detected by the main battery test, perform the Power Supply
Troubleshooting procedures in Section 6-2.
If an error is detected by the display test, perform the Display Troubleshooting
procedures in Section 6-3.
If an error is detected by the keyboard test, perform the Keyboard
Troubleshooting procedures in Section 6-4.
If an error is detected when using an external USB device, perform the External
USB Devices
Troubleshooting procedures in Section 6-5.
If an error is detected when using the CRT connection, perform the CRT Failure
Troubleshooting procedures in Section 6-6.
If an error is detected when using the HDMI connection, perform the HDMI
Failure Troubleshooting procedures in Section 6-7.
If an error is detected when using the touch pad, perform the Touch Pad
Troubleshooting procedures in Section 6-8.
If an error is detected when using the speakers, perform the Speaker
Troubleshooting procedures in Section 6-9.
If an error is detected when using the CD/DVD drive, perform the CD-ROM/DVD
Drive Troubleshooting procedures in Section 6-10.
If an error is detected when using the Wireless LAN unit, perform the Wireless
LAN Troubleshooting procedures in Section 6-11.
If an error is detected when using the Camera, perform the Camera
Troubleshooting procedures in Section 6-12.
If an error is detected when using the Bluetooth, perform the Bluetooth
Troubleshooting procedures in Section 6-13.
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