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This chapter provides a systematic method of isolating problems with the Digital HiNote VP
500 series of notebook computers. It is assumed that you have a basic understanding of DOS-
based computer systems as well as a knowledge of standard troubleshooting procedures. This
manual is written under the assumption that the problems are indeed related to the notebook
computer itself. The improper usage of the system and application software problems are
excluded in this chapter.
The system BIOS power on self-tests (POST) are integral to the system and detect certain
errors with the system board. They use a series of beep codes to identify certain system board
problems.
The troubleshooting procedures when followed step by step, can help isolate system
problems.
Troubleshooting Tips
In general, troubleshooting involves an organized system of approach to problem solving.
Try to isolate the problem and identify the defective device (hardware) or improper setting
(software). When you have a problem, you should do a thorough visual inspection of the
Notebook.
•
If none of the indicators are lit and you cannot hear the HDD spinning, then the
Notebook is probably not receiving power.
•
Make sure the power cord is plugged in, and the AC adapter is securely connected.
•
If you are using a power strip or surge protector, ensure that these devices are turned on.
Often problems are caused by improperly connected cables.
•
If you are using peripherals such as the mouse or keyboard, make sure they are properly
connected to their respective ports. Ensure that none of the connectors' pins are bent or
broken.
•
Check all cables connected to the Notebook. If any are cut, frayed, or damaged in any
way, replace them right away. Never use a damaged cable. A damaged cable is not only
a fire hazard, it may also cause a short circuit, resulting in irreparable damage to the
Notebook.
•
Check all internal connections to ensure that they are secure. Often problems can occur
because a connection is loose or backwards. Most connections have a "key" to ensure
that they go in correctly, but some may not have a key.
Verify that all test equipment works before using it to test a malfunctioning component (for
example, a floppy disk drive).
Troubleshooting
Digital HiNote VP 500 Service Guide 3–1
3
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