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LCD PC E
LCD PC E
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8590 MAINTENANCE
8590 MAINTENANCE
7.1 Introduction
7. Maintenance Diagnostics
Every time the computer is turned on ,the system BIOS runs a series of internal checks on the hardware.
This power-on self test (post) allows the computer to detect problems as early as the power-on stage.
Error messages of post can alert you to the problems of your computer.
If an error is detected during these tests, you will see an error message displayed on the screen. If the
error occurs before the display, then the screen cannot display the error message. Error codes or system
beeps are used to identify a post error that occurs when the screen is not available.
The value for the diagnostic post (80H) is written at the beginning of the test. Therefore , if the test fail,
the user can determine where the problem occurs by reading the last value written to post 80H by the
PCI debug card plug at PCI slot.
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