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2-6 Sun Fire X2250 Server Service Manual • April 2009
No videois displayed
on the monitor
screen.
Check the following:
• Is the monitor cable connected to the video connector?
• Does the monitor work when connected to another system?
• If you have another monitor, does it work when connected to the
original system?
• If, after POST and BIOS complete, you no longer see video output
on your monitor and only see a flashing cursor, check the
configuration of the operating system to determine if it is
configured to redirect its output exclusively over the serial line.
External device is not
working.
• Check the documentation that came with the device to see if any
device drivers must be installed.
• Verify 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.
Newly installed
memory is not
detected.
• Verify that the memory is properly seated in the DIMM sockets.
• Move the memory to the another DIMM socket to determine
whether the socket is defective.
• Verify that you are using 2 GB or 4 GB (667-MHz) fully-buffered
DIMM modules with 3.05 cm max. height.
• Verify that the memory modules are installed in pairs.
TABLE 2-1 Troubleshooting Procedures (Continued)
Problem Possible solution