HP ProCurve 6400cl Series Access Security Manual page 46

Configuring Username and Password Security
Front-Panel Security
2-12
Reset
2. While holding the Reset button, press and hold the Clear button.
Reset
3. Release the Reset button and wait for about one second for the Self-Test
LED to start flashing.
Reset
4. When the Self-Test LED begins flashing, release the Clear button
Clear
Clear
Clear
Self
Test