FIC A360 service manual Informational Messages, Beep Codes, Troubleshooting and Repair

Troubleshooting and Repair

6.2.2Informational Messages

This section lists the messages that provide information to the user but require no action.

Table 6-2	BIOS Informational Messages
Message	Meaning
nnnK Base Memory	The amount of base memory that tested successfully.
nnnK Extended	The amount of extended memory that tested successfully.
Memory tests terminated by	The message indicates that a user pressed the spacebar
keystroke	while memory tests were running and stopped the
	memory tests.
Press the F1 key to continue	This message indicates that an error was found during
	POST. Pressing the F1 key allows the system to attempt
	to reboot.
Beginning memory test Press the	A user can stop the memory tests by pressing the
SPACEBAR to terminate the	spacebar.
memory test
Press the F1 key to continue, F2	This message indicates that an error was found during
to run the Setup utility	POST. Pressing the F1 key allows the system to attempt
	to boot. Press F2 allows users to run the ROM-based
	SETUP utility to correct configuration information.

6.2.3Beep Codes

Beep codes are used to identify a POST error that occurs when the screen is not available. Once the screen is operating, diagnostic messages are reported to the screen. There are beep codes for both fatal and non-fatal system board errors.

No beep code is generated if a test is aborted while in progress. However, diagnostic cards can be installed in order to display the contents of the diagnostic port 80h and identify the area of failure.

Explanation of test terms for beep code table

The following terms are used in the Test Performed column of the beep code table:

1.Pattern test - One or more particular patterns are written to a location then read back from the same location. Examples of patterns used are 55h and AAh. If the value read does not match the value written, the test is considered a failure.

2.Rolling ones test - Several patterns are constructed. These patterns represent a one rolling through the given location. For example, to roll a one through three bits, the following patterns would be constructed: 001, 010, 011, 100, 101, 110, and 111. The patterns are written to the location and then read back, one by one. If the value read does not match the value written, the test is considered a failure.

3.Rolling zeros test - Several patterns are constructed. These patterns represent a zero rolling through the given location. For example, to roll a zero through three bits, the following patterns would be constructed: 011, 001, and 000. The patterns are written to the location and then read back, one by one. If the value read does not match the value written, the test is considered a failure.

4.Checksum test - All of the values in a given range of locations are added together. The

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