Warning For Your Personal Safety And Protection Of The Equipment

Before you start to work on the computer, perform the following steps in the sequence indicated.

1. Ground yourself by attaching an antistatic grounding strap to your wrist and to an unpainted metal surface on the computer's I/O panel. If an antistatic grounding strap is not available, periodically discharge static electricity from your body by touching one of the connectors on the I/O panel.

2. Turn off the computer and any attached peripherals.

3. Disconnect the computer and any attached peripherals from electrical outlets to reduce the potential for personal injury or shock.

You must also take the following steps:

1. If the computer is docked in a port replicator, undock the computer.

2. Disconnect all other external cables from the computer.

3. Remove any installed PC Cards.

4. Remove any devices from the options bay.

5. Remove the battery from the battery bay.

6. Remove the hard-disk drive.

The above steps are described in detail in "Removing Customer-Replaceable Parts," found later in this chapter.

Screw Identification and Tightening

CAUTION: The correct length screw must be used when reinstalling a screw. Otherwise, hardware damage could result. Make sure that the screw is properly aligned with its corresponding hole, and avoid overtightening.

Before installing a screw, match the screw to the screw length graphics in Figure 4-2 to check for correct length.

14 mm 16 mm 19 mm

Figure 4-2. Screw Length Identification

14 mm 16 mm 19 mm

Figure 4-2. Screw Length Identification

While removing and replacing parts, use a tackle or pill box as a storage device to keep track of the screws. The location template in Table 4-1 can be used to identify the screws during disassembly.

Table 4-1. Screw Location Template

Hard-disk drive:

3 x 4 (1) (removing) 3 x 4 (1) (disassembling)

RAM door:

2.5 x 19 (4) 2.5 x 5 (1) 2 x 2.5 (2)


2.5 x 5 (6)

LCD interior assembly:

2.5 x 5 (2)

LCD panel rails (13.3-inch):

2.5 x 5 (4)

LCD panel rails (14.1-inch):

2 x 3 (3) 2.5 x 5 (2)

Iomega Zip drive:

2.5 x 5 (1)

Heat-sink fin cover:

2 x 3.5 (1)

Processor module assembly:

2.5 x 5 (1)

Modem card:

2.5 x 4 (2) 2.5 x 14 (1)

Palmrest assembly:

2.5 x 19 (7)

Touch pad assembly:

2.5 x 5 (2) 2.5 x 16 (1)

DC/DC board:

2.5 x 14 (1)

PC Card cage:

2.5 x 5 (1) 2.5 x 14 (1)

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