●
Keep cables clear of movable or rotating parts (such as fans, power supply, and drive cage) to prevent
them from being cut or crimped when the component is lowered into its normal position and during
normal operation.
●
When folding a flat ribbon cable, never fold to a sharp crease. Sharp creases may damage the wires.
●
In all cases, avoid bending or twisting the cables. Do not bend any cable sharply. A sharp bend can break
the internal wires.
●
Never bend a SATA data cable tighter than a 30 mm (1.18 in) radius.
●
Never crease a SATA data cable.
●
Do not rely on components like the drive cage, power supply, or computer cover to push cables down
into the chassis. Always position the cables to lay properly by themselves or in the cable guides and
chassis areas designed for cable routing.
When removing the power supply power cable from the connector on the system board, always follow these
steps:
1.
Press down the top of the retaining latch attached to the cable end of the connector.
2.
Grasp the cable end of the connector and pull it straight out.
CAUTION:
Always pull on the connector — NEVER pull on the cable. Pulling on the cable could damage
the cable and result in a failed power supply.
CPU (processor) and CPU heat sink
CAUTION:
Observe the following cautions when removing or replacing the heat sink:
— When removing the heat sink, loosen all screws a little at a time to be sure that the CPU remains level. Do
not fully loosen one screw, and then move on to the next.
— Do not overtighten the heat sink screws. Overtightening can strip the threads in the chassis.
CAUTION:
Observe the following cautions when removing or replacing the CPU.
— Internal components might be powered even when the computer is off. To prevent damage, disconnect the
computer power cord before you remove or install a component.
— Do not touch the CPU socket contacts or the gold pads underneath the CPU. Use extreme care and handle
the CPU only by the edges.
— The CPU socket contacts are delicate and bend easily. To avoid bending the contacts, use extreme care
when installing the CPU in the socket.
— Installing a processor incorrectly can damage the system board. Contact an authorized service provider to
install the processor. If you plan to install the processor yourself, view the entire remove-and-replace video
before you begin.
— Failure to follow the computer preparation instructions can result in an improperly installed processor,
causing extensive computer damage.
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Chapter 3 Component replacement information and guidelines
