Contents

Notes, Cautions, and Warnings

2

1 Working on Your Computer

9

Before Working Inside Your Computer

9

Recommended Tools

10

Turning Off Your Computer

10

After Working Inside Your Computer

11

2 Cover

13

Removing the Cover

13

Installing The Cover

13

3 Front Bezel

15

Removing the Front Bezel

15

Installing The Front Bezel

16

4 Cards

17

Removing the Expansion Card

17

Installing The Expansion Card

19

5 Optical Drive

21

Removing the Optical Drive

21

Installing The Optical Drive

22

6 Hard Drive

23

Removing the Hard Drive

23

Installing The Hard Drive

25

7 Memory

27

Removing the Memory

27

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Dell 990 service manual Contents