Sun Microsystems TurboGX, Installation Manual

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Troubleshooting D-3
D
•
Improper monitor is attached to the system
•
The monitor cable is either defective or not installed properly
•
The monitor is defective
•
The TurboGX/TurboGXplus card is defective
•
If the
setenv
command was used, it may have been used improperly.
Refer to Section 2.7, Changing the Refresh Rate for Monitors to check the
settings.
To solve this problem:
1. Make sure that you are using the right monitor, and that the monitor cable
is installed properly.
2. Attach the proper monitor to the system and turn the CPU power off and
on.
3. If it does not resolve the problem, replace the monitor cable.
If the problem still exists, call 1-800-USA-4SUN (within the USA) or contact
your Sun Sales Representative. If you are outside the USA, contact your nearest
Sun service provider.
D.6 Checking the System Fuses
Note – This procedure should be performed only if the system fails to boot up
after performing the procedure described in section D2
The TurboGX/TurboGXplus card does not have a fuse or a circuit breaker; it
gets its power from the CPU board. If the system fails to boot and the system
LED is not lit, this does not necessarily mean that the TurboGX/TurboGXplus
card is defective; a system fuse may be blown, or a circuit breaker may be
turned off. These fuses or circuit breakers should be checked. The following
section describes how to check them.