Table 2-1 Troubleshooting Procedures - Sun Microsystems Ultra 20 User Manual

TABLE 2-1
Problem
Hung or frozen
workstation: No
response from
mouse or keyboard
or any application.
There is no video
display on the
monitor screen.
External device is
not working.
Newly installed
memory is not
detected.
2-6 Sun Ultra 20 Workstation User Guide • August 2006
Troubleshooting Procedures (Continued)
Possible solution
Try to access your system from a different workstation on the
network.
1. From a terminal window, type: ping hostname
2. If there is no response, remotely log in from another system, using
telnet or rlogin, and ping the system again.
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.
See Section 1.4.2, "Powering Off the Workstation" on page 1-9
more detailed information.
Check the following:
• Is the cable connected to the onboard video connector or PCI
Express video connector?
• Is the monitor power cord connected to the power outlet?
• Does the wall outlet have power? Test it by connecting another
device.
• 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
original system?
• Verify that the BIOS settings are correct.
• Check the documentation packaged with the device to see if any
device drivers must be installed.
• Ensure that the cables for the external device are firmly connected,
and that the pins in the cable and connector are not bent.
• Power off the system, reattach the external device, and power on
the system.
• Make sure that the memory is properly seated on the DIMM
sockets.
• Move the memory to the other DIMM socket to determine
whether the socket is defective.
• Make sure that you are using 256 MB, 512 MB, or 1 GB DDR 400
SDRAM modules with 3.05 cm max. height.
• Make sure that the memory is installed in pairs.
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