Rosewill Computer Case 422 Technical Information PDF herunterladen (Seite 45)

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Chapter 4 • Disassembly and Power

On the back of the adapter,

the square solder joint is pin 1

Pin 1 of cable connects to pin 1

on the adapter’s connector

Figure 4.9 Pin 1 on a connector

Specific cables connect a motherboard to lights, ports, or buttons on the front panel. These

include the power button, a reset button, USB ports, IEEE 1394 ports, a microphone port, a

headphone port, speakers, fans, the hard drive usage light, and the power light, to name a few.

Be very careful when removing and reinstalling these cables. Usually, each one of these has a

connector that must attach to the appropriate motherboard pins. Be sure to check all ports

and buttons once you have reconnected these cables. Refer to the motherboard documentation

if your diagramming or notes are inaccurate or if you have no diagrams or notes. Figure 4.10

shows the motherboard pins and the connectors.

Figure 4.10 Motherboard front panel connectors

Storage Devices

Hard drives must be handled with care when disassembling a computer. Inside traditional hard

drives are hard platters with tiny read/write heads located just millimeters above the platters.

If dropped, the read/write heads can touch the platter, causing damage to the platter and/or

the read/write heads. The platter is used to store data and applications. Today’s mechanical

hard drives have self-parking heads that pull the heads away to a safe area when the computer

is powered off or in a power-saving mode. Always be careful neither to jolt nor to jar the hard

drive when removing it from the computer. Even with self-parking heads, improper handling

can cause damage to the hard drive.

A solid-state drive does not contain fragile heads. However, these drives are susceptible to

ESD. Use proper antistatic handling procedures when removing/installing them. Store a solid-

state drive in an antistatic bag when not in use. Avoid touching the drive with a metal tool.

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Rosewill Computer Case 422 Technical Information Seite 45