Maintenance and Troubleshooting
91
System powers on,
green LED blinks
continuously,
nothing appears on
monitor.
Memory error.
Make sure all DIMMs
installed in slot group A are
the same capacity.
Make sure DIMMs are
securely seated in DIMM
slots.
Voltage regulator
installed with
terminator in
secondary processor
slot.
If you have a terminator in
the secondary processor slot,
make sure the voltage
regulator is removed.
Memory failure.
Replace DIMMs.
System board failure.
Replace system board.
System powers on,
green LED blinks a
repeating pattern,
nothing appears on
monitor.
Memory failure.
Locate and replace the faulty
DIMM by interpreting the
LED blink code. For
information, see
“Interpreting LED Blink
Codes” on page 94.
System boots to
PROM level,
doesn’t boot
Windows NT.
Memory error or
failure.
Make sure all DIMMs
installed in slot group A are
the same capacity.
Make sure DIMMs are
securely seated in the slots.
Set Power On Diagnostics to
Extensive Mode and reboot
system. (See the Silicon
Graphics 320 and Silicon
Graphics 540 Software
Installation Guide for
instructions.) Check for
memory error in diagnostics
display to identify faulty
DIMMs.
Table 8-1
Troubleshooting (continued)
Symptom
Possible Cause
Solution
Summary of Contents for 320
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