Removing and Installing Parts

CAUTION: To guard against electrical shock, laceration by moving fan blades, or other unexpected injuries, always unplug your computer from the electrical outlet before opening the cover.

CAUTION: Do not operate your computer with any cover(s) (including computer covers, bezels, filler brackets, front-panel inserts, and so on.) removed.

CAUTION: Some of the parts described in this chapter may be replaceable by a certified service technician only and are not custom replaceable.

Before You Begin

This chapter provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that the following conditions exist:

You have performed the steps in "Turning Off Your Computer" on page 102 and "Before Working Inside Your Computer" on page 102.

You have read the safety information in the Dell™ Product Information Guide.

A component can be replaced or—if purchased separately—installed by performing the removal procedure in reverse order.

Recommended Tools

The procedures in this document may require the following tools:

Small flat-blade screwdriver

Small Phillips screwdriver

Small plastic scribe

Flash BIOS executable update program on the Dell Support website at support.dell.com

Removing and Installing Parts

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Dell 531S owner manual Before You Begin, Recommended Tools, 101, Removing and Installing Parts