Sun Microsystems Ultra 20 M2 Service Manual page 37

Troubleshooting Procedures (Continued)
TABLE 3-1
Problem Possible solution
There is no video Check the following:
display on the
Try to access your system from a different workstation on the
monitor screen.
network.
1. From a terminal window, type: ping hostname
2. If there is no response, remotely log in from another system, using
3. Attempt to kill processes until the system responds.
If the above procedures do not work:
1. Press the Power button to power off the system.
2. Wait 20 to 30 seconds and power on the system.
• Is the cable connected to the onboard video connector or PCI
• Is the monitor power cord connected to the power outlet?
• Does the wall outlet have power? Test it by connecting another
• Is the video card seated correctly in its connector?
• Are the internal cables properly connected to the video card?
• Does the monitor work when connected to another system?
• If you have another monitor, does it work when connected to the
• Verify that the BIOS settings are correct.
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.
External device is • Check the documentation packaged with the device to determine
not working.
• Ensure that the cables for the external device are firmly connected,
• Power off the system, re-attach the external device, and power on
telnet or rlogin, and ping the system again.
See Section 2.5, "Powering Off the Workstation" on page 2-6
more detailed information.
Express video connector?
device.
original system?
ports on the workstation.
whether you must install device drivers.
and that the pins in the cable and connector are not bent.
the system.
Chapter 3 Troubleshooting
for
3-7