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Removing and Replacing Parts: Dell WebPC System Reference
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Removing and Replacing Parts: Dell™ WebPC™ System
Reference
Unless otherwise noted, each of the following procedures assumes:
- You can replace or reinstall a part by performing the removal
procedure in reverse order.
Before you remove or replace parts in your computer, read the
following caution for your personal safety and to prevent damage to the system from
electrostatic discharge (ESD).
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CAUTION FOR YOUR PERSONAL SAFETY
AND PROTECTION OF THE EQUIPMENT. Before you
start to work on the system, perform the following steps in the sequence listed:
- Turn off your computer and all devices.
- Ground yourself by touching an unpainted metal surface on the bottom
of the computer before touching anything inside your computer.
While you work, periodically touch an unpainted metal surface on the
computer to dissipate any static electricity that might harm internal components.
- Disconnect the power cable to your computer, and then press the power button to ground the system board.
- Disconnect any devices connected to the computer, including the
monitor, from their electrical outlets to reduce the potential for personal injury or
shock. Also, disconnect any telephone or telecommunication lines from the computer.
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After you remove or replace parts in the system, observe the
following notice to prevent damage to the system.
NOTICE: Make sure all other system cables are connected
before connecting the computer to its electrical outlet.
To disassemble your computer, you will need the following tools:
- Standard paper clip
- Phillips #2 screwdriver
- Wrist-grounding strap
- Cup or other container to put screws in as they are removed from the
system
All procedures in this document require that the computer
cover and bezel be removed and the chassis
opened.
Computer Cover
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| 1 |
Computer cover |
| 2 |
Screws |
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- Unscrew the four screws from the back of the chassis. Slide the
computer cover towards the back of the system and remove it from the chassis.
Figure 2. Removing the Bezel
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| 1 |
CD-ROM or DVD-ROM drive tray |
| 2 |
Bezel |
| 3 |
Bezel tabs |
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- Open the CD-ROM or DVD-ROM drive by inserting a paper clip into the
drive ejection hole located to the right of the Eject
button.
- Push outward on the two tabs at the top of the bezel and the two tabs
at the bottom of the bezel, and then pull the bezel forward away from the chassis.
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NOTE: The power/sleep and E-support buttons are replaceable by
pulling them away from the plastic standoffs on the inside of the bezel. |
- Close the CD-ROM or DVD-ROM drive tray to avoid
damaging it while working with the computer.
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NOTE: The CD-ROM or DVD-ROM drive tray must be open when
reinstalling the bezel. |
Figure 3. Removing the Chassis Door
- Place the computer on its right side (when
viewed from the back of the system) and remove the single screw securing the chassis door
to the chassis.
- Swing the left side of the chassis open. If
necessary, use a screwdriver to gently pry the door open.
- Place a book or other object beneath the
chassis door to support the system board
.
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| 1 |
Shroud |
| 2 |
Shroud release levers (2) |
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- Gently pull back on the two release levers located on the cooling
shroud (see Figure 4), and pull the cooling shroud straight up to free
it from the chassis.
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| 1 |
Hard-disk drive |
| 2 |
Screw |
| 3 |
Release tab |
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- Remove the power supply cable from the hard-disk drive assembly.
- Remove the single screw (see Figure 5) that
secures the hard-disk drive assembly to the back of the chassis.
- Lift the chassis up and press inward on the
release tab located on the bottom of the chassis to release the hard-disk drive assembly.
- Slide the hard-disk drive assembly toward the
front of the chassis and lift it out of the chassis.
- Unplug the power and data cables from their
connectors on the hard-disk drive.
- Remove the four screws that secure the
hard-disk drive to the bracket.
Figure 6. Removing the CD-ROM or DVD-ROM Drive
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| 1 |
EMI shield |
| 2 |
CD-ROM or DVD-ROM drive |
| 3 |
CD-ROM or DVD-ROM drawer |
| 4 |
Screw |
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- To remove the CD-ROM or DVD-ROM drive from the system, carefully
remove the EMI shield from the top of the system.
- Disconnect the ribbon cable (located under the
EMI shield) from the CD-ROM or DVD-ROM drive.
- Beneath the CD-ROM or DVD-ROM drawer, remove
the screw that secures the CD-ROM or DVD-ROM assembly to the chassis.
- Push the drive forward about 1/4-inch and lift
it from the chassis. Pull the ribbon cable free from the CD-ROM or DVD-ROM drive assembly.
Figure 7. Removing the Power Supply
- Remove the power supply cable from the system board and from the hard-disk drive.
- Remove the single screw that secures the power supply to the chassis.
- Slide the power supply forward 1/4-inch and
lift it out of the chassis.
Figure 8. Removing the LED Assembly
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| 1 |
LED assembly |
| 2 |
Release tabs |
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- Remove the control panel cable from the system board.
- From inside the chassis, squeeze the bottom
release tabs to free the front-panel assembly from the chassis.
- Lift the chassis door and rotate the LED
assembly outward, and then remove the LED assembly from the chassis.
- Pull the cable through the chassis.
Figure 9. Removing a DIMM
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| 1 |
Retaining tab (2) |
| 2 |
DIMM |
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- To remove a DIMM, press down and out on the retaining tabs at each
end of the socket. The DIMM pops up, allowing you to lift it out of its socket on the
system board.
Figure 10. Installing a DIMM
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| 1 |
Alignment slot |
| 2 |
Retaining tabs |
| 3 |
Book (or other object) to
support chassis door |
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To install a DIMM:
- Orient the DIMM so that the cutouts on its edge connector align with
the crossbars in the central groove of the socket.
- Insert the DIMM straight down into the socket, making sure that it
fits into the vertical guides at each end of the socket.
- Press firmly on the DIMM until the module snaps into place.
NOTICE: Do not press near the middle of the module. Doing so
could break it.
If you have inserted the DIMM correctly, the retaining tabs at each
end of the socket snap into the cutouts at each end of the DIMM.
Figure 11. Removing the RJ-11/RJ-45 Connectors and PCI Card
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| 1 |
Modem/phone line jack |
| 2 |
Interface cable |
| 3 |
PCI card |
| 4 |
Release lever (2) |
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- Remove the color-coded connector overlay label from the back of the
system.
- Press the small clips that hold the modem/phone line jacks in place,
and push the modem jack through the opening in the chassis.
- Remove the interface cable from its connector on the PCI card.
- Spread apart the two release levers on the card and lift the card
from its connector on the system board.
Figure 12. Removing the Heat Sink and Processor
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| 1 |
Retaining clip |
| 2 |
Heat sink |
| 3 |
Processor |
| 4 |
Socket |
| 5 |
Retaining lever |
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- Remove the heat sink by squeezing the plastic release tabs of the
retaining clip.
- Rotate the retaining lever on the processor upwards to release the
processor from its socket.
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Note: Be sure to note the alignment of the processor in the
socket. |
To reinstall the processor:
- Align the processor in the socket.
- Rotate the retaining lever back to its locked position.
- Secure the heat sink by fastening it with the retaining clip.
Figure 13. Removing the Battery
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| 1 |
Battery |
| 2 |
Battery socket |
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CAUTION: There is a danger of the
new battery exploding if it is incorrectly installed. Replace the battery only with the
same or equivalent type recommended by the manufacturer. Discard used batteries according
to the manufacturer's instructions. |
- If possible, enter the system setup
program, and print (by pressing the <Print Screen> key) or copy the system
configuration information from the system setup screens.
- Open the computer.
- Pry the battery out of its socket with your
fingers or with a blunt, nonconductive object such as a plastic screwdriver.
NOTICE: Do not use a metal object to remove the battery from
the socket. A metal object may short out the battery or the socket and damage the system
board.
NOTICE: If you pry out the battery with a blunt object,
insert the object between the battery and the socket. Otherwise, you may damage the system
board by prying off the socket or by breaking circuit traces on the system board.
To replace the battery, perform the following steps:
- Install the new battery with the "+" side facing up.
- Start the system
setup program, and reset the System Date
and System Time settings.
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| 1 |
Power supply cable |
| 2 |
Control panel cable |
| 3 |
Hard-disk drive cable |
| 4 |
CD-ROM or DVD-ROM drive cable |
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- Disconnect the four internal cables from the system board (see Figure 14).
- Disconnect the interface cable from its
connector on the PCI card.
- Loosen the single screw (shown below) that
secures the system board to the chassis.
Figure 15. Removing the System Board
- With both hands, carefully lift the system board away from the back
of the computer chassis.
The system board contains the following sockets and connectors:
- Processor
- Two DIMM sockets
- Hard-disk drive connector
- CD-ROM or DVD-ROM drive connector
- Control panel connector
- Power supply connector
- PCI card connector
To install a new system board:
- Lay the system board in the chassis and slide it into place as shown
in the following figure.
Figure 16. Installing the System Board
- Replace the single screw that secures the
system board to the carrier.
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NOTE: If you are replacing the system board, you must first
remove the DIMMs, the processor,
and the PCI card from the original board and transfer them to the
new system board. |
- Reconnect the cables in the following order.
- CD-ROM or DVD-ROM drive
- Hard-disk drive
- Control panel (keyed)
- Power supply cable
- Use one hand to tuck the cables as close as
possible to the side wall as you close the chassis.
- Replace the single screw in the back to secure
the chassis cover.
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