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# Before You Begin

Dell™ Latitude™ C800 Service Manual

Preparing to Work Inside the Computer

Recommended Tools

Screw Identification

## Preparing to Work Inside the Computer

| NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not covered by your warranty.

| NOTICE: To avoid damaging the computer, perform the following steps before you begin working inside the computer.

1. Make sure that the work surface is flat and clean to prevent scratching the computer cover.
2. Save any work in progress and close all open application programs.
3. Turn off the computer and all attached devices.

| NOTE: Before turning off the computer, make sure the computer is not in a power-management mode.

1. Make sure the computer is undocked.
2. Disconnect the computer from the electrical outlet.
3. To avoid possible damage to the system board, wait 10 to 20 seconds and then disconnect any attached devices.
4. Disconnect all other external cables from the computer.
5. Remove any installed PC Cards or plastic blanks from the PC Card slot.
6. Close the display and turn the computer upside down on a flat work surface.
7. Remove the battery from the battery bay.

| NOTICE: To avoid component damage, always remove any installed batteries before you service the computer.

1. Remove any device installed in the modular bay.
2. To dissipate static electricity while you work, periodically touch an unpainted metal surface on the computer chassis.
3. Handle components and cards by their edges, and avoid touching pins and contacts.

## Recommended Tools

The procedures in this manual require the following tools:

- #1 magnetized Phillips screwdriver
- Small flat-blade screwdriver
- Small plastic scribe
- Microprocessor extractor
- Nonmarring tool
- Flash BIOS upgrade program diskette or CD (provided when needed to upgrade the system BIOS)

System Orientation

## Screw Identification

When you are removing and replacing components, photocopy the placemat as a tool to lay out and keep track of the component screws.The placemat provides the number of screws and the sizes.

Screw Identification

| NOTICE: When reinstalling a screw, you must use a screw of the correct diameter and length. Make sure that the screw is properly aligned with its corresponding hole, and avoid overtightening.

Screw Placement Map

Hard Drive Door Security: M3.0 x 5 mm (1 each) | Keyboard to Bottom Case Assembly: M2.5 x 20 mm (4 each; one in memory door and one in mini-PCI door) | Display to Base: M2.5 x 6 mm (3 each; 2 at back of system; 1 at flex cable strain relief)
Display Bezel: Rubber screw covers (4 each) Plastic screw covers (2 each) M2.5 x 4 mm (6 each) | Display Panel to Display Mounting Bracket: M2.0 x 3 mm(6 each) Flex Cable Mounting Bracket to Top Cover: M2.5 x 4 mm (1 each) | Video Graphics Board: M2.5 x 8 (3 each)
Palmrest to Bottom Case Assembly: M2.5 x 20 mm (9 each) Palmrest Bracket: M2.5 x 4 mm (2 each)

System Board:

M2.5 x 4 mm captive washer
(3 each)

M2.5 x 20 mm (1 each)

LED Board:

M2.0 x 4 mm (2 each)

Fan Assembly: M2.0 x 4 mm (3 each) | RJ-11/RJ-45 Board Assembly: M2.5 x 4 mm (1 each) |

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