Troubleshooting - Silicon Graphics 320 Owner's Manual

90 Chapter 8

Troubleshooting

Table 8-1 lists system problems, possible causes, and recommended
solutions.
Table 8-1 Troubleshooting
Symptom Possible Cause
System does not AC power cable
power on, no LED, disconnected.
no fans.
Power supply cable
not attached to system
board.
Primary processor not
recognized.
Power button and LED
cables not attached to
system board.
Primary processor
failure.
Power supply failure.
System board failure.
Solution
Check power connection
from power source to
workstation.
Make sure power supply
cables are attached to system
board.
Check to see if internal fans
are working and if LED in
upper right corner of system
board is lit. If fans are
working and LED is lit,
system board is receiving
power.
Reinstall primary processor
and if a secondary processor
isn't installed, make sure a
terminator card is installed in
the top slot.
Make sure internal power
button and LED cables are
plugged into system board
(see diagram inside the side
panel to locate the power
button and LED cable
connectors).
Replace the processor.
Replace the power supply.
Replace the system board.