NEC Express 5800/120Lh, User Manual, Page: 188 / 314

8-14 Troubleshooting
SOLVING PROBLEMS
When the server fails to operate as expected, see the following to find out your problem and follow
the instruction given before asking for repair.
If the server still fails to operate successfully after solving your problem, take a note on the on-
screen message and contact your sales agent.
Problems with NEC Express Server
No screen display appears with beep:
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Are DIMMs installed securely?
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Check whether DIMMs are connected to the mating connectors firmly.
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Check whether DIMMs of different specifications are installed in the specific
bank. See Chapter 9 for the specifications of DIMMs.
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DIMMs must be populated in pairs and in the following order:
#5 and #6, #1 and #2, #3 and #4, then #7 and #8.
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Installed DIMMs must be the same speed and must all be registered.
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Installed DIMMs starting from the one having largest memory.
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Take a note of beep code pattern, and take appropriate action according to the
table listed earlier in "Beep Codes".
Fail to power on the server:
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Is the server is properly supplied with power?
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Check if the power cord is connected to a power outlet (or UPS) that meets the
power specifications for the server.
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Make sure to use the power cord provided with the server. Check the power cord
for broken shield or bent plugs.
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Make sure the power breaker for the connected power outlet is on.
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If the power cord is plugged to a UPS, make sure the UPS is powered and it
outputs power. See the manual that comes with the UPS for details.
Power supply to the server may be linked with the connected UPS using the BIOS
SETUP utility of the server.
<Menu to check: [Server] - [AC-LINK]>
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Did you press the POWER switch?
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Press the POWER switch on the front of the server to turn of the power (the
POWER/SLEEP lamp lights).