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damage to the system board.
4. Wear a wrist grounding strap, and clip it to an unpainted metal surface, such as the padlock loop on the back of the chassis. If a wrist
grounding strap is not available, touch any unpainted metal surface on the back of the computer or on the computer chassis, such as
the power supply, to discharge any static charge from your body before touching anything inside the computer. While you work,
periodically touch an unpainted metal surface on the computer chassis to dissipate any static electricity that might harm internal
components. Also avoid touching components or contacts on a card and avoid touching pins on a chip.
5. Verify that the auxiliary power indicator on the system board is not on. If it is on, you may need to wait 10 to 30 seconds for it to go out
(see
Figure
20).
Internal Views
Figure 1 shows a top view of the chassis to help you orient yourself when you work inside the computer.
Figure 1. Orientation View
Figure 2 shows the chassis with the cover removed.
Figure 2. Inside the Chassis
Computer Cover
Figure 3. Computer Cover Removal
1 System board
2 Diskette drive
3 Hard-disk drive
4 CD-ROM drive
5 Power supply
1 CD-ROM drive interface cable
2 Externally accessible upper drive bay
3 Hard-disk drive
4 Diskette-drive interface cable
5 Hard-disk drive interface cable
6 Expansion-card cage
7 System board
8 Expansion-card slots
9 I/O ports and connectors
10 AC power receptacle
11 Security cable slot
12 Power supply
13 Chassis intrusion switch
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