Sun Microsystems Ultra 20 User Manual page 29

Troubleshooting Procedures (Continued)
TABLE 2-1
Problem Possible solution
Workstation does • Try all of the power-off options shown in
not power off when
the front-panel
• If the workstation still does not power off, disconnect the power
Power button is
pressed.
The network status • Check the cabling and network equipment to make sure that all
indicator does not
light up.
• Reinstall the network drivers.
An external device • Reduce the number of external devices connected to a USB hub.
connected to a USB
• Connect the device to a USB hub and connect the hub to the USB
connector does not
work.
• Refer to the documentation that is packaged with the device.
System cannot read Do the following:
the disk
1. Turn off the workstation by pressing the Power button.
information.
2. Remove the left-side panel.
3. Check to make sure that the power and data cables are connected
to the disk drive and that the pins in the cable and connector are not
bent.
4. Replace the left-side panel.
5. Turn on the workstation.
System cannot read Check the following:
CD or DVD
• Are you using the correct type of CD/DVD?
information.
• Is the CD/DVD properly inserted in the drive?
• Is the CD/DVD clean and unscratched?
• Are the cables connected to the DVD drive?
Keyboard or mouse • Verify that the mouse and keyboard cables are connected to the
does not respond to
actions.
• Verify that the workstation is powered on and that the front
Workstation appears The power-indicator LED blinks only when all workstation
to be in low-power components are in low-power mode. A tape drive might be
mode, but the Power connected to your workstation. Because tape drives do not enter
button LED does not low-power mode, the power-indicator LED does not blink.
blink.
Off the Workstation" on page
cable from the back of the chassis.
cables are correctly seated.
ports on the workstation.
onboard USB 2.0 connectors on the workstation.
Power LED is illuminated.
Section 1.4.2, "Powering
1-9.
Chapter 2 Troubleshooting 2-5