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Memory Module and Modem

Dell™ XPS M140 Service Manual

  Removing a Memory Module

  Replacing a Memory Module

  Modem

Your Dell computer comes equipped with two memory slots/connectors labeled DIMM A and DIMM B. DIMM A (located under the keyboard) holds the primary memory module as configured from the factory. DIMM B (located on the bottom of the computer) holds any additional memory you may have ordered. If you did not order additional memory, DIMM B will be empty.

Generally, if you are adding memory, you will install a memory module in DIMM B only. If you are upgrading the memory, you may need to install memory modules in DIMM A and DIMM B, depending on the extent of the upgrade.

NOTE: Memory modules purchased from Dell™ are covered under your computer warranty.

Removing a Memory Module

CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.

NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.

Memory Module DIMM B

1. Follow the instructions in Preparing to Work Inside the Computer.
   
   
2. Loosen the two captive screws securing the memory module cover, then remove the cover and set it aside.
   
   

1

memory module cover

2

captive screws (2)

NOTICE: To prevent damage to the memory module connector, do not use tools of any kind to spread the metal clips that secure the module.

3. Use your fingertips to carefully spread apart the metal clips securing each end of the memory module until the module pops up.
   
   

1

memory module

2

metal retention clips (2)

4. Remove the module from the connector at a 45-degree angle.
   
   

Memory Module DIMM A

1. Follow the instructions in Preparing to Work Inside the Computer.
   
   
2. Remove the hinge cover (see Removing the Hinge Cover).
   
   
3. Remove the keyboard (see Removing the Keyboard).
   
   
4. Loosen the two captive screws securing the memory module cover, then remove the cover and set it aside.
   
   

1

memory module cover

2

captive screws (2)

NOTICE: To prevent damage to the memory module connector, do not use tools of any kind to spread the metal clips that secure the module.

5. Use your fingertips to carefully spread apart the metal clips securing each end of the memory module until the module pops up.
   
   

1

memory module

2

metal retention clips (2)

6. Remove the memory module from the connector at a 45-degree angle.
   
   

Replacing a Memory Module

CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.

NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.

NOTICE: If you need to install more than one memory module, install a memory module in the memory slot labeled DIMM A before installing a module in the slot labeled DIMM B. Insert memory modules at a 45-degree angle to avoid damaging the connector.

NOTE: If a memory module is not installed properly, the computer may not boot. No error message will be displayed for this type of failure.

1. Follow the instructions in Preparing to Work Inside the Computer.
   
   
2. Remove the appropriate memory module cover and memory module, if installed (see Removing a Memory Module).
   
   
3. Install the new memory module:
   
   
   1. Align the notch in the memory module edge connector with the tab in the connector slot.
      
      
   2. Slide the module firmly into the slot at a 45-degree angle, and then rotate the module down until it clicks into place. If you do not feel the click, remove the module and reinstall it.
      
      

1

memory module

NOTICE: If the memory module cover is difficult to close, remove the memory module and reinstall it. Forcing the cover to close may damage your computer.

4. Replace the memory module cover and tighten the screws.
   
   
5. Replace the keyboard (see Replacing the Keyboard—DIMM A only).
   
   
6. Replace the hinge cover (see Replacing the Hinge Cover—DIMM A only).
   
   

If You Are Replacing Memory

As the computer boots, it detects the installed memory. The system configuration information remains the same.

If You Are Adding or Upgrading Memory

As the computer boots, it detects the change in memory and automatically updates the system configuration information.

Confirming Installed Memory

To confirm the amount of memory installed in the computer, use one of the following methods:

• Click the Start button, then click Help and Support. Under Pick a task, click Use Tools to view your computer information and diagnose problems. Under Tools, click My Computer Information, then click Find information about the hardware installed on this computer.
  
  
• Access the System Setup Program at startup by pressing <F2> immediately when the DELL logo appears. If you wait too long and the Microsoft® Windows® logo appears, continue to wait until you see the Windows desktop, then shut down your computer and try again. See "Using the System Setup Program" in your User's Guide.
  
  

Modem

NOTE: If you ordered the optional modem at the same time that you ordered your computer, the modem is already installed.

Removing the Modem

CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.

NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.

1. Follow the instructions in Preparing to Work Inside the Computer.
   
   
2. Loosen the two captive screws on the modem/Mini PCI/wireless cover, then remove the cover and set it aside.
   
   

1

modem/Mini PCI/wireless cover

2

captive screws (2)

3. Disconnect the antenna cables from the Mini PCI card, if applicable.
   
   

NOTE: The Mini PCI card is optional and may not be installed if one was not ordered with the computer.

1

Mini PCI antenna cables

4. Remove the M2 x 3-mm screw securing the modem to the system board and set it aside.
   
   
5. Pull straight up on the attached pull-tab to disconnect the modem from the connector on the system board.
   
   
6. Disconnect the modem cable from the modem.
   
   

1	modem	3	M2 x 3-mm screw	5	pull tab
2	modem cable	4	system board connector

Replacing the Modem

CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.

NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.

1. Follow the instructions in Preparing to Work Inside the Computer.
   
   
2. Follow the instructions in Removing the Modem, as applicable.
   
   

NOTICE: The modem connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors for proper alignment.

3. Connect the modem cable to the new modem.
   
   
4. Connect the modem to the system board.
   
   

Align the modem with the screw hole and press the modem into the connector on the system board.

5. Replace the M2 x 3-mm screw and secure the modem to the system board.
   
   
6. Connect the Mini PCI antenna cables, if applicable.
   
   
7. Replace the modem/Mini PCI/wireless cover and tighten the screws.
   
   

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