Dell 2300C manual Diagnostic Lights, Diagnostic Code Definition Corrective Action

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Diagnostic Lights

To help you troubleshoot a problem, your computer is equipped with four lights on the back panel labeled "A," "B," "C," and "D" (see page 72). These lights can be yellow or green. When the computer starts normally, the lights flash. After the computer starts, the lights remain green. If the computer malfunctions, the color and sequence of the lights identify the problem.

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions on page 9.

Diagnostic Code				Definition	Corrective Action
Y	Y	G	G	Memory modules	• If you have one memory module
				are detected, but a	installed, reinstall it (see page 82) and
				memory failure has	restart the computer.
A	B	C	D	occurred.	• If you have two or more memory
					modules installed, remove the modules,

reinstall one module (see page 82), and then restart the computer. If the computer starts normally, reinstall an additional module. Continue until you have identified a faulty module or reinstalled all modules without error.

• If available, install properly working memory of the same type into your computer (see page 87).

• If the problem persists, contact Dell (see page 95).

G	Y	G	Y	Memory modules
				are detected, but a
				memory
A	B	C	D	configuration or
				compatibility error
				exists.

•Ensure that there are no special memory module/memory connector placement requirements (see page 82).

•Verify that the memory modules that you are installing are compatible with your computer (see page 87).

•If the problem persists, contact Dell (see page 95).

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Advanced Troubleshooting