Troubleshooting guide

9-4 DS20E Reference Guide
Compaq Confidential – Need to Know Required
Writer: Robert Young Project: Compaq AlphaServer DS20E System Comments:
Part Number: ER-K8F6W-UA .A01 File Name: j-ch9 Troubleshooting.doc Last Saved On: 10/4/99 2:06 PM
Power Problems
Table 9-3 describes how to troubleshoot the system when there is no power at
the system enclosure.
Table 9-3
Troubleshooting Power Problems
Symptom Action
No AC power. Check the power source and power cord.
Check that the system cover is properly
secured. An interlocking sensor switch shuts
off power to the system if the cover is
removed.
Unplug the power cord for 15 seconds, then
reconnect.
AC power is present, but system does
not power on.
Check the On/Off button on the control panel.
Check that the ambient room temperature is
within environmental specifications (10–40ºC,
50–104ºF).
Check the remote management console using
the STATUS command. Look for fan status,
system temperature, or power supply failure.
System requires two good power supplies to
power on.
Check that cable connectors on the system
board are properly connected.
Check that the internal power supply cables
are plugged in at the right place on both the
power supply and system board.
Check that the side panel (or top panel for
rackmounts) is closed.
Power supply shuts down after
approximately 10 seconds (fan failure).
Listen to hear if the fan is spinning at power-
up. A failure of the fan causes the system to
shut down after a few seconds.