6 optical drive, 7 palm-rest assembly, 8 power-button board – Dell XPS 15 (L502X, Early 2011) User Manual
Page 4: 9 coin-cell battery, 10 hard drive

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Contents
23
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25
25
26
29
Removing the Palm-Rest Assembly
29
Replacing the Palm-Rest Assembly
32
35
Removing the Power-Button Board
35
Replacing the Power-Button Board
36
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37
Removing the Coin-Cell Battery
37
Replacing the Coin-Cell Battery
38
10 Hard Drive
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39
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39
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41