Vostro 3681 Service Manual

System diagnostic lights

Power-supply diagnostics light

Indicates the status of the power-supply in either of the two states:

Off: No Power
On: Power is supplied.

Power button light

Table 1. Power button LED statusPower button LED status
Power button LED state	System state	Description
Off	S4 S5	There is in Hibernate or Off state.
Solid White	S0	Working state
Solid Amber	S0-S5	Various sleep states or No POST
Blinking Amber/White	S0-S5	Failure to POST

This platform relies on the Power button LED light blinking in an amber/white pattern to determine a failure as listed in the following table:

NOTE:

The blinking patterns consists of two numbers (representing First Group: Amber blinks, Second Group: White blinks).

First Group: The Power button LED light blinks Amber, 1 to 9 times followed by a short pause with LED off for a couple of seconds.
Second Group: The Power button LED light then blinks White, 1 to 9 times, followed by a longer pause before the next cycle starts again after a short interval.

Example: No Memory detected (2,3). Power button LED blinks 2-times in Amber followed by a pause, and then blinks 3-times in White. The Power button LED will pause for few seconds before the next cycle repeats itself again.

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Vostro 3681 Service Manual

System diagnostic lights

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