Manuals

Removing and Replacing Parts: Dell� Dimension� XPS Pro150n, Pro180n, and Pro200n

Removing/Replacing Parts: Dell Dimension XPS Pro150n, Pro180n, and Pro200n

The procedures in this section are applicable to both the desktop and mini tower systems unless specifically noted otherwise.

NOTE: To replace parts, follow the steps below in reverse.

Removing the Cover

Desktop

Removing the cover

Turn off the power and unplug the power cable.
Face the front of the chassis.
Loosen the cover-mounting screw/nut that secures the cover to the back of the computer.
The screw/nut remains captive.
Place both hands (palms down) on the top cover near each of the rear corners.
Using your index fingers, push inward on the 2 cover release latches, slightly press down on the cover, and slide the cover 1 inch toward the back of the computer.
Lift the cover up off the computer.

Mini Tower

Removing the cover

Turn off the power and unplug the power cable.
If the system is a mini tower, lay the system unit on its right side with the chassis foot off the edge of the work surface to allow the unit to lay flat.
Face the front of the chassis.
Loosen the cover-mounting screw/nut that secures the cover to the back of the computer. The screw/nut remains captive.
Place both hands (palms down) on the top cover near each of the rear corners.
Using your index fingers, push inward on the 2 cover release latches, slightly press down on the cover, and slide the cover 1 inch toward the back of the computer.
Lift the cover up off the computer.

Removing/Replacing the Front Bezel

Remove the cover.
Press the 3 tabs on the top and side of the desktop or mini tower chassis to release the bezel latches.
Swing the top (desktop) or side (mini tower) of the bezel away from the chassis, and disengage the 3 retaining hooks on the bottom (desktop) or side (mini tower) of the bezel.

Removing/Replacing the Plastic Front-Panel Inserts

Remove the cover.
Remove the front bezel.
Press the 2 tabs on the right side of the front-panel insert, which is attached to the drive cage, to release the panel latch.
Swing the front-panel insert outward to disengage the retaining hook on the left side.

Removing/Replacing the Drive Cage

NOTE: The drive cage is the same in both the desktop and mini tower system units. Mount the drive cage in the mini tower system unit so that the drives are horizontal when the mini tower unit is upright (with the 5.25-inch drive being the top drive).

Remove the cover.
Remove the front bezel.
Note the location and orientation of all cables attached to the drives installed in the drive cage. Then disconnect the cables.
Remove the screw that secures the drive cage to the chassis.
Slide the drive cage forward approximately 1 inch, and lift it up and away from the chassis.

Removing/Replacing a 5.25-Inch Drive

Remove the cover.

Remove the front bezel.

Remove the drive cage and drives as an assembly.

Remove the 3 drive-mounting screws, and slide the drive out of the bay.

NOTE: When sliding the new drive into its drive bay, make sure that both drive rail tabs snap into place. If they do not, adjust the position of each drive rail by loosening the screws and sliding the drive rail forward or backward as needed.

Removing/Replacing an Upper 3.5-Inch Drive

Remove the cover.
Remove the front bezel.
Remove the drive cage and drives as an assembly.
Remove the 2 drive-assembly mounting screws, and slide the drive out of the bay.
Remove the 2 drive-bracket mounting screws, and remove the drive bracket from the drive.

Removing/Replacing a Lower 3.5-Inch Drive (Mini Tower Only)

Remove the cover.
Remove the front bezel.
Remove the drive cage and drives as an assembly.
Remove the 3 drive-mounting screws from the left side and bottom of the drive cage, and slide the drive out of the bay.

Removing/Replacing the 3.5-Inch Diskette Drive

Remove the cover.
Remove the front bezel.
Disconnect the power cables and interface cables from the back of the 3.5-inch diskette drive.
Press the 2 drive-release tabs on each side of the drive, and then slide the drive out.

Removing/Replacing a Hard-Disk Drive

Primary hard-disk drive:

Remove the cover.
Remove the front bezel.
Disconnect the cables from the back of the drive.
Remove the 2 mounting screws.
Lift the hard-disk drive up out of the card guide assembly to remove it.

When reinstalling a primary hard-disk drive, be sure the circuit board is facing the front of the chassis.

Secondary hard-disk drive:

Remove the cover.
Remove the front bezel.
Disconnect any cables from the back of the drive.
Remove the 2 drive-assembly mounting screws.
Slide the drive assembly toward the back of the chassis and lift it out.

To remove the secondary hard-disk drive from the drive bracket, remove the screw from the right side of the hard-disk drive, and then pivot the bracket away from the drive.

NOTE: When reassembling the hard-disk drive into the bracket, be sure the two tabs are in the mounting holes on the left side of the drive.

Removing/Replacing the Power Supply

Remove the cover.
Disconnect the power cables from the power supply, system board (J8M1 and J9L1 connectors), any drives, and any expansion cards.
Support the power supply while removing the 2 power-supply mounting screws from the back of the chassis and the 1 mounting screw inside the chassis.
Remove the power supply from the chassis.

Removing/Replacing the Microprocessor Fan Assembly

If your system is a mini tower system, place the system unit on its right side with the chassis foot off the edge of the work surface to allow the system unit to lay flat.
Remove the cover.
Disconnect the microprocessor fan cable from the CPUFAN connector on the system board.
At the back of the chassis, maintain upward pressure on the 2 release buttons, lift the fan assembly out of the chassis.

Removing/Replacing an Expansion Card

Remove the cover.
Disconnect any cables from the expansion card, noting the location of each connector and the orientation of any cables attached to the expansion card.
Remove the retaining screw from the card-mounting bracket.
Grasp the expansion card by its corners, and carefully pull it out of its expansion-card connector.

Removing/Replacing the Card Guide Assembly

Remove the cover.
Disconnect any cables connected to all full-length expansion cards installed, and remove these expansion cards.
Remove the 3.5-inch diskette drive.
Remove the primary hard-disk drive.
If present, remove the secondary hard-disk drive.
Disconnect the control-panel cable from the J10E1 connector on the system board.
Press inward on the 4 mounting tabs that secure the card guide assembly to the front panel, and press down on the tab at the back of the card guide assembly.
Remove the card guide assembly, including the control-panel cable.

Removing/Replacing the Control-Panel Board

Remove the cover.
Remove the front bezel.
Remove the card guide assembly.
Press on the mounting tab to release the control-panel board from the card guide assembly, and remove the control-panel board.

Removing/Replacing a SIMM

Remove the cover.
While pushing outward on each of the SIMM socket's metal tabs, rotate the SIMM downward until it is released from its socket.
To replace or reinstall a SIMM, align the SIMM with the slot in the center of the socket, with the cutout toward the back of the chassis, and press upward slowly until the SIMM snaps into place.

Removing/Replacing the Heat Sink Assembly and Microprocessor

WARNING: The microprocessor chip can get extremely hot during system operation. Ensure the chip is cool before touching it.

Remove the cover.
Remove the heat-sink retention clip from the microprocessor/heat sink assembly. Press on the folded part of the clip with a small screwdriver to release it.
Push outward and then upward on the microprocessor-socket release lever to rotate it to its fully vertical position.
Lift the microprocessor/heat sink assembly out of its socket.

Ensure the release lever is in the vertical position before installing a chip. Be sure to orient the replacement chip in the same direction as the chip removed. Hook the microprocessor securing clip over the socket tab nearest the release lever pivot, and then snap it over the tab on the other side of the socket.

Removing/Replacing the Battery

If possible, enter the system setup program and make a printed copy of the screens for a record of the configuration information, which may be lost during the battery replacement.
Remove the cover.
Remove any expansion cards that restrict access to the battery.
Pry the battery out of its socket with a blunt, nonconductive object.

When replacing the battery, ensure the side labeled “+” is facing up.

Removing/Replacing the System Board

Remove the cover.
Disconnect any cables attached to the port connectors on the I/O panel.
Disconnect all internal cables from the system board.

The cables attached to the Primary IDE, Secondary IDE, and Floppy connectors each have 2 latches securing them to the system board. Press the latch on each end of the cable connector, and pull to release the cable from the system board.
Remove any expansion cards.
Remove the 3.5-inch diskette drive and the secondary hard-disk drive.
Remove the screws that secure the system board to the chassis.

Lift the system board out from the plastic standoffs, and remove the board from the system unit.

When installing the new system board in the computer, push the system board against the back of the chassis so that the system board makes firm contact with the I/O gasket to prevent EMI leakage.

CAUTION: Failure to install the system board exactly as described may result in EMI leakage that could interfere with other electronic devices.