Manuals

1 Shroud 2 SEPP2 package 3 Heat sink 4 Processor connector 5 Processor mounting bracket 6 Fan assembly 7 Screws (4) 8 Fan shroud tabs (2)

	CAUTION: The SEPP2 package and heat sink can get extremely hot during system operation. Be sure that the assembly has had sufficient time to cool before you touch it.

	CAUTION: When handling the SEPP2 package and heat sink assembly, take care to avoid sharp edges on the heat sink.

To reseat a SEPP2 package and heat sink assembly containing a processor that runs at 1.00 GHz or higher, perform the following steps:

1. Remove the computer cover and support beam.
   
   
2. Remove the fan shroud by pressing its two tabs and gently lifting the shroud until it clears the fan assembly, SEPP2 package, and heat sink assembly. Set the fan shroud aside.
   
   
3. Remove the chassis-cooling fan assembly.
   
   
4. Remove the fours screws that secure the SEPP2 package and heat sink assembly to the system board.
   
   
5. Grasp the SEPP2 package firmly, and pull straight up to remove it from the processor connector.
   
   

   NOTE: You must use up to 15 pounds of force to disengage the SEPP2 package from the connector. Do not rock the package while removing it.

6. Slide the SEPP2 package into the processor connector, with the heat sink toward the front of the computer, and firmly seat the SEPP2 package.

NOTICE: Press only on the SEPP2 package. Pressing on the heat sink assembly might damage it.

NOTE: You must use up to 25 pounds of force to seat the SEPP2 package. Do not rock the package while inserting it into the connector.

7. Replace the four screws that secure the SEPP2 package and heat sink assembly to the system board.
   
   
8. Replace the chassis-cooling fan assembly.
   
   
9. Place the fan shroud over the fan assembly, SEPP2 package, and heat sink assembly. Then gently press down the shroud until the two fan shroud tabs snap into the two slots on top of the fan assembly.
   
   
10. Replace the computer cover and support beam, and reconnect the system to an electrical outlet.
    
    
11. Insert a diskette copy of the Dell Diagnostics into the diskette drive, and restart the system. Run the System Set test group in the Dell Diagnostics.

If the tests do not complete successfully, see Chapter 7, "Getting Help," in the Dell Dimension XPS B Series Systems Reference and Troubleshooting Guide for instructions on obtaining technical assistance.

Socketed Microprocessor

NOTICE: Do not perform this procedure unless you are replacing the installed socketed processor and heat sink assembly with an upgrade kit. Do not reuse the installed heat sink when replacing the socketed processor. Doing so can cause the microprocessor to overheat because of an inadequate amount of thermal compound between the heat sink assembly and the socketed processor.

	CAUTION: The socketed processor and heat sink can get extremely hot during system operation. Be sure that the assembly has had sufficient time to cool before you touch it.

	CAUTION: When handling the socketed processor and heat sink assembly, take care to avoid sharp edges on the heat sink.

To remove a socketed processor from the zero-insertion force (ZIF) socket connector, perform the following steps:

1. Remove the computer cover and support beam.
   
   
2. Remove the fan shroud by pressing its two tabs and gently lifting the shroud until it clears the fan and heat sink assemblies. Set the shroud aside.

1 Shroud 2 Heat sink 3 Fan assembly 4 Fan shroud tabs (2)

3. Remove the chassis-cooling fan assembly.
   
   
4. Remove the metal retaining clip that secures the heat sink assembly to the socketed processor by gently pushing down on the folded part of the retaining clip with a small screwdriver.
   
   The retaining clip hooks over tabs on the sides of the ZIF socket connector.

1 Retaining clip 2 Heat sink assembly 3 Socketed processor 4 ZIF socket connector

 

CAUTION: The socketed processor and heat sink assembly can get extremely hot. To avoid burns, be sure that the processor and assembly have had sufficient time to cool before you touch them.

5. Remove the heat sink assembly from the socketed processor.

NOTICE: Be careful not to bend any of the pins when you remove the socketed processor from the ZIF socket connector. Bending the pins can permanently damage the microprocessor.

6. Detach and lift the socketed processor away from the ZIF socket connector.
   
   The ZIF socket connector has a lever-type handle that secures and releases the socketed processor from the ZIF socket connector.
   
   
   1. Pull the socket release lever straight out until the socketed processor releases.
      
      
   2. Remove the socketed processor from the socket connector.
      
      

Leave the release lever extended so that the socket connector is ready for the installation of a socketed processor.

1 Socketed processor 2 Socket release lever 3 ZIF socket connector

To replace the socketed processor and heat sink assembly, perform the following steps:

1. Unpack the new socketed processor.

NOTICE: You must position the socketed processor correctly in the ZIF socket connector to avoid permanent damage to the microprocessor and the computer when you turn on the system.

2. Install the socketed processor in the ZIF socket connector.
   
   
   1. If the release lever on the ZIF socket connector is not all the way out, move it to that position now.
      
      
   2. Align pin 1 (the beveled corner) of the socketed processor and pin 1 of the ZIF socket connector.
      
      
   3. Set the socketed processor lightly in the socket, making sure that all the pins are headed into the correct holes.
      
      Because your system uses a ZIF socket connector, there is no need to use force (which could bend the pins if the socketed processor is misaligned).
      
      
   4. When the socketed processor is positioned correctly, press it with minimal pressure to fully seat it in the ZIF socket connector.
      
      
   5. When the socketed processor is fully seated, pivot the release lever back toward the system board until it snaps into place, securing the microprocessor.

1 Socketed processor 2 ZIF socket connector 3 Pin 1 (alignment corner)

3. Unpack the heat sink included in your upgrade kit.

NOTICE: Do not reuse the old heat sink when replacing the socketed processor. Doing so can cause the microprocessor to overheat because of an inadequate amount of thermal compound between the heat sink assembly and the microprocessor package.

4. Replace the heat sink assembly.
   
   
   1. Peel the release liner from the adhesive tape that is attached to the bottom of the new heat sink assembly.
      
      
   2. Place the heat sink assembly on top of the socketed processor.
      
      
   3. Orient the metal retaining clip as shown in the following illustration, and hook the unhinged end of the clip over the tab on the top edge of the ZIF socket connector.
      
      
   4. Press down on the hinged end of the clip to snap the clip over the tab on the bottom edge of the ZIF socket connector.

1 Retaining clip 2 Heat sink assembly 3 Socketed processor 4 ZIF socket

5. Replace the chassis-cooling fan assembly.
   
   
6. Place the fan shroud over the fan assembly and heat sink assembly. Then gently press down the shroud until the two fan shroud tabs snap into the two slots on top of the fan assembly.

7. Replace the computer cover and support beam, and reconnect the system to an electrical outlet.
   
   
8. Insert a diskette copy of the Dell Diagnostics into the diskette drive, and restart the system. Run the System Set test group in the Dell Diagnostics.

If the tests do not complete successfully, see Chapter 7, "Getting Help," in the Dell Dimension XPS B Series Systems Reference and Troubleshooting Guide for instructions on obtaining technical assistance.

Battery

1 Battery 2 Battery socket (BT8E1)

 

	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.

To remove the 3-volt (V), CR2032 coin-cell battery, perform the following steps:

1. 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.
   
   
2. Remove the computer cover and support beam.
   
   
3. Pry the battery out of its socket (BT8E1) 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:

1. Install the new battery with the "+" side facing up.
   
   
2. Start the system setup program, and reset the System Date and System Time settings.
   
   
3. Compare the system configuration settings and restore any system configuration information that was lost when you replaced the battery.

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System Board

1 3.5-inch diskette drive 2 Secondary hard-disk drive bracket 3 System board 4 I/O gasket

1. If possible, enter the system setup program and print the system setup screens by pressing the <Print Screen> key before you turn off the computer because you will have to restore the configuration information after the system board is replaced.
   
   
2. Disconnect any cables attached to the back of the computer.
   
   
3. Disconnect any cables connected to expansion cards, and remove these expansion cards.
   
   
4. Disconnect all internal cables from the system board.
   
   
5. Remove the SEPP2  package and heat sink assembly.
   
   
6. Using a #2 Phillips-head screwdriver, loosen the four captive nuts securing the guide bracket assembly for the SECC2 package to the system board.
   
   
7. Remove the assembly from the four threaded posts as shown in the following figure.
   
   

   NOTE: The four nuts are captive and are retained in the assembly when loosened. The screws are mounted on the system board.

1 Captive nuts (4) 2 Threaded posts (4) 3 Key 4 Guide bracket assembly

8. Remove the system-board mounting screw from the back of the computer, as shown in the following figure.

1 System-board mounting bracket 2 Mounting screw

9. Lift the system board from the three plastic standoffs that secure the system board to the chassis.
   
   
10. Carefully lift the system board out from the I/O gasket (see "System Board"), and remove the board from the computer.

NOTE: You may need to slide the board toward the front of the computer to clear the hooked standoffs before you can lift the board from the computer.

11. Remove the mounting bracket from the back of the system board as shown in the following figure.

1 System board-mounting bracket 2 System board

Before you install a replacement system board, perform the following steps:

1. Install the guide bracket assembly for the SEPP2 package.
   
   The assembly is keyed for correct insertion.
   
   
2. Install the SEPP2 package and heat sink assembly.
   
   
3. Transfer the RIMMs and continuity modules (if any) to the new system board.

When you install a replacement system board, angle the back of the board downward and carefully align the connectors on the back edge of the board with the cutouts in the I/O gasket (see "System Board"). When properly aligned, the board connectors slide into the I/O gasket as you lower the board into position in the chassis and reseat it on the three plastic standoffs. Then replace the system-board mounting screw.

NOTE: The system-board mounting screw pulls the board against the I/O gasket to prevent electromagnetic interference (EMI) leakage.

After you install the replacement system board, replace the expansion cards that you removed from the old system board.

When you reconnect the cables to a system board with integrated sound, connect the CD-ROM drive audio cable to the connector nearest the back edge of the system board. The middle audio connector may be used with a modem.

To configure the system after you install a replacement board, perform the following steps:

1. Install the jumper plug on pins 2 and 3 of configuration jumper J7B2 to select Maintenance mode.
   
   
2. Replace the cover and support beam, and start the computer.
   
   The computer automatically starts the system setup program, adds the Maintenance option to the menu bar, and displays the Maintenance screen.
   
   
3. Select Clear All Passwords, and press <Enter> twice.
   
   
4. Press <F10> to exit the system setup program and save any changes you made.
   
   
5. Turn off the system, remove the computer cover and support beam, and replace the jumper plug on pins 1 and 2 of configuration jumper J7B2 to select Normal mode operation.
   
   
6. Replace the cover and support beam and boot the system.
   
   
7. Reenter the system setup program, and reset the system configuration information.

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