Dell PowerVault 735N (Rackmount NAS Appliance) - Manual (Page 29)

Basic Troubleshooting: Dell PowerVault 735N Systems Service Manual
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3. Is the problem resolved?
Yes. You are finished. Reconfigure or administer the system as necessary.
No. Contact Dell Technical Support. See " Getting Help " for more information.
Internal Visual Inspection
NOTICE: Before you proceed with the internal visual inspection described in this section, make
sure you save all of your open application programs and close them, if possible.
A simple visual inspection of a system’s interior hardware can often lead to the source of a problem, such as
a loose expansion card, cable connector, or mounting screw. When you perform the visual inspection, see
"
System Features " to locate components referenced in the inspection procedure.
To perform the internal visual inspection, perform the following steps:
1. Turn off the system, including any attached peripherals, and disconnect all the AC power cables from
electrical outlets.
CAUTION: Before beginning to work inside the system, disconnect the power supply from the
power source and the power supply cables from the power supply.
2. Open the system’s doors as described in " System Doors ."
CAUTION: The SEC cartridge and heat sink assembly can get extremely hot during system
operations. Be sure that it has had sufficient time to cool before touching it.
CAUTION: When handling the SEC cartridge and heat sink assembly, take care to avoid sharp
edges on the heat sink.
3. Verify that the microprocessor(s), DIMMs, expansion cards, SEC cartridge, and heat sink assembly or
assemblies are fully seated in their sockets or connectors.
4. To ensure that the microprocessor(s) are fully seated in their sockets, press firmly on the top of each
microprocessor.
5. To remove and reseat an SEC cartridge and heat sink assembly, perform the steps described in
" Removing the SEC Cartridge and Heat Sink Assembly ."
6. To remove and reseat a DIMM, perform the steps described in " DIMMs ."
7. If you need to remove and reseat an expansion card, remove the card as described in " Expansion
Cards ," and carefully reinsert the card in its connector until fully seated.
8. Verify that all jumpers are set correctly.
NOTE: For information about jumper settings, see " System Board Jumpers ."
9. Check all cable connectors inside the system to verify that they are firmly attached to their appropriate
connectors.