Dell 4300 Computer Hardware User Manual


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Basic Troubleshooting 2-5
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A simple visual inspection of a computer’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, refer to “System
Features” in Chapter 1 to locate components referenced in the inspection
procedure.
To perform the internal visual inspection, follow these steps:
1. Turn off the system, including any attached peripherals, and disconnect all
the AC power cables from their power sources.
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2. Remove the computer’s right side cover as described in “Computer Cover”
in Chapter 4.
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3. Verify that the chips, DIMMs, expansion cards, and SEC cartridge and heat
sink assembly or assemblies are fully seated in their sockets or
connectors.
To ensure that the chips are fully seated in their sockets, press firmly on
the top of each chip.
To reseat an SEC cartridge and heat sink assembly, remove and re-
install it as described in “SEC Cartridge and Heat Sink Assembly” in
Chapter 4.
To reseat a DIMM, remove it from its socket and reinstall it as described in
“DIMMs” in Chapter 4.
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