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Removing and Replacing Parts: Dell™ PowerEdge™ 1400 Systems Service Manual

Overview

This section provides servicing procedures for components inside the computer. Before you start any of the procedures in this section, perform the following tasks:

• Perform the procedures described in "External Visual Inspection."
  
  
• Read the "Safety Instructions."

You may need the following items to perform some of the procedures in this section:

• Dell OpenManage Server Assistant CD
  
  
• Blank, formatted 3.5-inch diskette (for creating a Dell Diagnostics diskette)
  
  
• Key to the system padlock, if installed
  
  
• Small flat-blade screwdriver
  
  
• #1 and #2 Phillips-head screwdrivers

Unless a separate replacement procedure is provided, the process for installing a replacement component in this section is simply to perform the removal steps in reverse order.

Computer Cover

Figure 1. Padlock Removal

To remove the computer cover, perform the following steps:

1. Turn off your computer and all its attached peripherals, and make sure you unplug the computer from its electrical outlet before you remove the cover. Observe the precautions in "Safety Instructions."
   
   
2. Unlock and remove the padlock from the padlock ring on the back panel, if one is installed. Facing the back of the computer, slide the padlock ring to the left  to unlock the cover release mechanism (see Figure 1). 
   
   
3. Remove any security cable that may be in the security cable slot.
   

Figure 2. Cover Removal

4. Face the left side cover and press the release button (located at the bottom-left corner of the front bezel, as shown in Figure 2). 
   
   
5. Lift the bottom of the cover, allowing it to pivot upward, toward you.
   
   
6. Disengage the tabs that secure the cover to the top of the chassis, and lift the cover away.
   
   

To replace the cover, perform the following steps:

1. Check all cable connections, especially those that might have come loose during your work. Install the fan shroud over the fan and the processors). Fold cables out of the way so that they do not catch on the computer cover. Make sure cables are not routed over the drive cage—they will prevent the cover from closing properly.
   
   
2. Check to see that no tools or extra parts (including screws) are left inside the computer chassis.
   

Figure 3. Cover Replacement

3. Face the left side of the computer and hold the cover at a slight angle (see Figure 3).
   
   
4. Align the top of the cover with the top of the chassis and insert the three hooks on the cover into the three recessed slots on the computer chassis so that the tabs catch the hooks inside the slots.
   
   
5. Pivot the cover down toward the bottom of the chassis and into position. Make sure that the bottom of the cover clicks into place.
   
   
6. If you are using a security cable and/or a padlock to secure your system, reinstall them now.

Front Bezel

Figure 4. Front Bezel Removal

To remove the front bezel, perform the following steps:

1. While  pressing the tab release, tilt the bezel away from the chassis.
   
   
2. Disengage the two retaining hooks at the bottom of the bezel and pull the bezel away from the chassis.

To replace the bezel, fit the retaining hooks into their corresponding slots at the bottom of the chassis. Then rotate the top of the bezel toward the chassis until the top tabs snap into their corresponding slots on the bezel.

Power and Reset Buttons

Figure 5. Power and Reset Button Removal

To remove the power and reset buttons, perform the following steps:

1. Lay the front bezel on a flat work surface, with the back of the bezel facing up.
   
   
2. To remove the power button or the reset button, use a small screwdriver and push in the two or three plastic clips that hold the button to the bezel.  When these clips are released, the buttons come free from the bezel.

Front-Panel Inserts

Figure 6.  5.25-Inch Front-Panel Insert Removal

To remove a 5.25-inch front-panel insert, perform the following steps:

1. Remove the computer cover.
   
   
2. Remove the bezel.
   
   
3. Hold the bezel with the front facing you.
   
   
4. From the front of the bezel, use your thumbs to press inward on each end of the insert until the insert snaps free of the bezel.

To replace a  front-panel insert, work from inside the bezel. Insert the two ring-tabs (one on each end of the insert) over the posts on the inside of the bay opening, and firmly press both ends of the insert into place.

Control Panel

Figure 7. Control Panel Removal

To remove the control panel, perform the following steps:

1. Remove the computer cover.
   
   
2. Remove the bezel.
   
   
3. Disconnect the control panel ribbon cable from the PANEL connector on the system board (see System Board Components for the location of the PANEL connector).
   
   
4. Remove the expansion card cooling fan.
   
   
5. Disconnect the chassis intrusion switch cable connector and the thermal sensor cable connector from the control panel.
   
   
6. Remove the mounting screw that secures the control panel to the chassis.
   
   
7. Open the drive cage door, pull the control panel and its attached ribbon cable through the opening in the front wall, and carefully remove the cable from the clip in the drive cage door.
   
   
8. Remove the control panel  from the chassis.
   
   

Figure 8 shows the locations of the diskette drive, CD-ROM drive, and the four internal hard-disk drive slots.

CAUTION: See "Safety Instructions" before working inside your system.

Figure 9. Removing a Diskette Drive

1. Remove the computer cover.
   
   
2. Remove the bezel.
   
   
3. Disconnect the DC power cable and the interface cable from the back of the diskette drive.
   
   
4. Press the bracket tab on either side of the drive toward the center of the drive and slide the bracket out of the bay.
   
   The diskette drive is secured to an inner bracket, which in turn is attached to the outer bracket you just removed.
   
   
5. To remove the inner bracket and diskette drive from the outer bracket, turn the assembly upside down and unscrew the four screws that secure the inner bracket and drive to the outer bracket (see Figure 10).
   
   

Figure 10. Removing the Brackets

6. Lift the outer bracket up and off the inner bracket and diskette drive assembly.
   
   
7. With one hand supporting the inverted drive assembly, remove the two screws that secure the rear of the inner bracket to the diskette drive.  Then, pivoting the inner bracket at the front of the diskette drive, lift the inner bracket off the diskette drive.
   
   

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CD-ROM Drive

CAUTION: See "Safety Instructions" before working inside your system.

NOTICE: See "Protecting Against Electrostatic Discharge."

CD-ROM Drive Removal

NOTES: For easier access inside the chassis, you may rotate the power supply out of the way temporarily (see Figure 14). Use this procedure to replace an optional tape drive from its external drive slot.

Figure 11. CD-ROM Drive Removal

1. Remove the computer cover.
   
   
2. Remove the bezel.
   
   
3. Disconnect the DC power cable and the interface cable from the back of the drive.
   
   
4. Press the bracket tab on either side of the drive toward the center of the drive and slide the bracket out of the bay.
   
   
5. To remove the drive from the bracket, turn the drive/bracket assembly upside down and unscrew the four screws that secure the drive to the bracket.

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Hard-Disk Drives

CAUTION: See "Safety Instructions" before working inside your system.

NOTICE: See "Protecting Against Electrostatic Discharge."

Hard-Disk Drive Removal

Remove a SCSI hard-disk drive from the hard-disk drive cage by performing the following steps:

1. Remove the computer cover.
   
   
2. Remove the front bezel.
   
   
3. Disconnect the DC power cable and interface cable from each drive.
   
   
4. Grasp the handle of the drive bay door on the front of the chassis, and pull out and down until the arms on the drive cage door disengage from the tabs on the bracket (see Figure 12). This action pulls the cage out of the drive bay about 1 to 3 inches.
   
   

Figure 12. Hard-Disk Drive Cage Removal

5. Remove the cage from the drive bay.
   
   
6. Remove the four screws that hold the drive in the cage.
   
   
7. Remove the drive by sliding it out of the cage.

CAUTION: To prevent damage to the drive cage, drive bay, or drive bay door when reinstalling the hard-disk drive cage, push the drive cage into the drive bay until the tabs snap into place before you close the drive bay door.  Fold the drive bay door handle down before attempting to replace the bezel.

Figure 13. Removing a Hard-Disk From the Drive Cage

Power Supply

CAUTION: See "Safety Instructions" before working inside your system.

Figure 14. Rotating the Power Supply

To remove the system's 330-Watt power supply, perform the following steps:

1. Disconnect the AC power cable from the power receptacle on the back of the power supply.
   
   
2. Remove the computer cover.
   
   
3. Free the system power supply from the securing tab labeled "RELEASE —>" and rotate the power supply upward until it locks. 
   
   
4. Optional. Remove the cooling shroud.  If you have large hands you will find accessing power supply cables a much easier task if the cooling shroud is removed.
   
   
5. Disconnect the DC power cables that attach to the system board and the drives. Note the routing of the DC power cables underneath the tabs in the chassis as you remove them from the system board and drives. It is important to route these cables properly when you replace them to prevent the cables from being damaged.
   
   
6. With the power supply in its rotated position up and away from the system board and chassis, lift up on the front end of the power supply (the right-hand pivot pin can be lifted out of its guide) and then move the power supply up, away from the chassis (see Figure 15).
   
   

Figure 15. Power Supply Removal

Cooling Shroud

CAUTION: See "Safety Instructions" before working inside your system.

Figure 16. Cooling Shroud Removal

1. Remove the computer cover.
   
   
2. Rotate the power supply up until it locks.
   
   
3. Remove the cooling shroud by rotating the shroud up and away from the system board, and then pulling the shroud's tabs out of the slots in the back panel (see Figure 16).
   
   
4. Install the replacement cooling shroud, making certain that no cables are caught beneath the shroud. 
   
   
5. Replace the computer cover, and reconnect your computer and peripherals to their power sources and turn them on.
   
   
6. To reset the chassis intrusion detector, enter the System Setup program and reset Chassis Intrusion to Not Detected.
   
   

To remove the microprocessor cooling fan, perform the following steps:

1. Remove the computer cover.
   
   
2. Rotate the power supply up until it locks (see Figure 14).
   
   
3. Remove the cooling air shroud.
   
   
4. Disconnect the fan power cable from the microprocessor FAN1 connector (located between the two voltage regulator module sockets, J2 and J3).
   
   
5. Gently pull the plastic lock, and push down on the fan to disengage the four latching tabs holding the fan to the back of the chassis.
   
   
6. Remove the fan from the chassis.
   
   
7. Install the replacement fan by performing steps 2 through 6 in reverse order.
   
   
8. Replace the computer cover, and reconnect your computer and peripherals to their power sources and turn them on.
   
   
9. To reset the chassis intrusion detector, enter the System Setup program and reset Chassis Intrusion to Not Detected.
   
   

1. Remove the computer cover.
   
   
2. Remove the front bezel.
   
   
3. Label and remove all of the expansion cards from the computer.
   
   
4. Disconnect the fan power cable from the expansion card FAN2 connector just to the right of the thumbscrew that secures the system board.
   
   
5. Remove the front panel card guide and expansion-card fan bracket assembly by pressing on the latch at the left side of the front panel and swinging the assembly inward, until the assembly can be pulled out the side of the chassis (see Figure 18).
   
   Set the fan bracket assembly, fan side up, on a smooth surface.
   

Figure 18. Fan Bracket Assembly Removal

6. Gently pull back the two fan release tabs located at the top and bottom of the fan bracket (see Figure 19).

Figure 19. Expansion Card Cooling Fan Removal

7. Lift the fan away from the fan bracket assembly.

Install the replacement fan by performing the following steps:

1. Install the replacement fan on the fan bracket assembly by sliding the fan under the securing hooks on the bracket (see Figure 19).
   
   
2. Once the fan is placed under the hooks, align the mounting holes on the fan with the alignment pins on the bracket and press down to snap fan into place (see Figure 19).
   
   
3. Replace the card guide and fan bracket assembly, taking care to keep the fan power cord routed toward the system board.  Insert the hinge tabs into their slots on the chassis front panel.
   
   Ensure that wires and cables are not pinched or damaged during the installation
   
   
4. Replace any expansion cards you removed.
   
   
5. Replace the bezel.
   
   
6. Replace the computer cover, and reconnect your computer and peripherals to their power sources and turn them on.
   
   
7. To reset the chassis intrusion detector, enter the System Setup program and reset Chassis Intrusion to Not Detected.
   
   

Expansion Cards

CAUTION:See "Safety Instructions" before working inside your system.

There are six PCI expansion-card connectors on the system board (see Figure 1, System Board). Expansion-card connectors PCI1 through PCI6 support two 32-bit/33-MHz and four 64-bit/33-MHz PCI expansion cards.  The PCI1 slot is limited to a half-length card. 

PCI2 has an in-line connector to support a DRAC card (SVR_MGT connector on the system board).

Figure 20. Expansion Card Removal

Perform the following steps to remove an expansion card:

1. Remove the computer cover.
   
   
2. If necessary, label and disconnect any cables connected to the card.
   
   
3. Unscrew the mounting bracket of the card you want to remove.
   
   
4. Grasp the card by its outside corners, and ease it out of its connector.
   
   
5. If you are removing the card permanently, install a metal filler bracket over the empty card-slot opening.
   
   
6. Replace the computer cover, and reconnect your computer and peripherals to their power sources and turn them on.
   
   
7. To reset the chassis intrusion detector, enter the System Setup program and reset Chassis Intrusion to Not Detected.
   
   

Memory Modules

CAUTION: See "Safety Instructions" before working inside your system.

To remove a memory module, perform the following steps:

1. Remove the computer cover.
   
   
2. Unlatch and rotate the power supply up until it locks (see Figure 14).
   
   
3. Push outward on the memory module socket securing clips until the memory module is released from its socket.
   
   
4. Lift the memory module away from the socket (see Figure 21).

Figure 21. Memory Module Removal

To replace a memory module, press the memory module fully into the socket while closing the securing clips to lock the memory module into the socket (see Figure 22).

Figure 22. Memory Module Installation

Memory Upgrade Guidelines

When adding system memory, you may install memory modules in any order. For optimum operation, Dell recommends installing the memory modules starting with socket DIMM_A (the socket closest to the top edge of the system board) and working toward socket DIMM_D, leaving no open sockets between installed memory modules.

Table 1. Sample Memory Module Configurations

Follow this procedure to perform a memory upgrade:

1. Remove the computer cover.

2. To access the memory module sockets on the system board, rotate the power supply (see Figure 14).
   
   
3. Determine the memory module sockets in which you will install memory modules or replace existing memory modules.
   
   
4. Install or replace memory modules as necessary to reach the desired memory total.
   
   
5. Rotate the power supply back into position, making sure that the securing tab snaps into place.
   
   
6. Replace the computer cover, and reconnect your computer and peripherals to their power sources and turn them on.
   
   

NOTE: After you remove and replace the cover, the chassis intrusion detector will cause the following message to be displayed at the next system start-up: ALERT! Cover was previously removed.

The system detects that the new memory does not match the existing system configuration information and generates the following message:

The amount of system memory has changed.
Strike the F1 key to continue, F2 to run the setup utility

9. Press <F2> to enter the System Setup program, and check the value for system memory.
   
   The system should have already updated the value of system memory to reflect the newly installed memory. Verify the new total.
   

NOTE: If the memory total is incorrect, turn off and disconnect your computer and peripherals from their power sources. Remove the computer cover, rotate the power supply, and check the installed memory modules to make sure that they are seated properly in their sockets. Then repeat steps 5, 6, and 7.

10. While in the System Setup program, reset the chassis intrusion detector. 

NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector.

11. When the system memory total is correct, press the <Esc> key to exit the System Setup program.
    
    
12. Run the Dell Diagnostics to verify that the memory modules are operating properly.

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Microprocessor

CAUTION: See "Safety Instructions" before working inside your system.

NOTICE: See "Protecting Against Electrostatic Discharge."

To remove a microprocessor/heat sink assembly, perform the following steps:

WARNING: The microprocessor/heat sink assembly can get extremely hot. Be sure that the assembly has had sufficient time to cool before handling.

1. Remove the computer cover.
   
   
2. Rotate the power supply up and away from the system board.
   
   
3. Remove the cooling shroud.
   
   
4. With one hand holding the heat sink,  press down on the heat sink latch to release the clip (see Figure 23).
   
   

Figure 23. Releasing Heat Sink Clip

5. Lift the heat sink and its clip away and set it aside.
   
   
6. Lift the release lever on the zero-insertion force (ZIF) socket straight up until the microprocessor chip is released (see Figure 24) and then lift the chip out of its socket.
   
   Leave the release lever up so that the socket is ready to receive the replacement microprocessor.
   

Figure 24. Microprocessor Removal

To install a replacement microprocessor/heat sink assembly, perform the following steps:

1. Unpack the new replacement microprocessor and heat sink. Inspect the microprocessor to ensure that no pins are bent, and identify the corner without pins and with pin 1 (see Figure 25).
   
   

Figure 25. Pin-1 Identification

2. Install the replacement microprocessor in the socket (see Figure 26).
   
   

CAUTION: Positioning the microprocessor incorrectly can permanently damage the chip and the computer when you turn on the system.

3. If the release lever on the microprocessor socket is not all the way up, move it to that position now.
   
   
4. With the pin-1 corner of the chip and socket aligned, set the chip lightly in the socket and make sure that all pins are matched with the correct holes in the socket.  With a ZIF socket, there is no need to use force to seat the pins in their sockets. When the chip is positioned correctly, it should drop down into the socket with no or minimal pressure.

CAUTION: When placing the microprocessor chip into the socket, be sure that all of the pins on the chip go into corresponding holes in the socket. Be careful not to bend the pins.

5. When the chip is fully seated in the socket, rotate the ZIF socket release lever back down until it snaps into place, securing the chip in the socket (see Figure 26).
   
   

Figure 26. Installing the Microprocessor

6. Inspect the thermal interface foil on the bottom of the heat sink to ensure there is no damage. Orient the heat sink so that the large tab is facing the memory module sockets (see Figure 27). Place the heat sink with foil side facing down, on top of the microprocessor chip.
   

Figure 27. Installing the Heat Sink

7. Orient the securing clip so that the heat sink latch (see Figure 27) is facing the expansion card connectors.
   
   
8. Fit the end of the clip without the heat sink latch over the tab on the side of the ZIF socket (see Figure 27). In the system, this is the side closest to the memory modules.
   
   
9. Push down and pivot the heat sink latch towards the ZIF socket until the hole in the latch catches on the socket.
   
   
10. Replace the air shroud.
    
    
11. Replace the computer cover making sure that the shroud support holds the shroud in place.
    
    
12. Reconnect your computer and peripherals to their power sources, and turn them on.
    
    
13. Press <F2> to enter the System Setup program, and check that the PROCESSOR 1 and PROCESSOR 2 categories match the new system configuration.
    
    
14. As the system boots, it detects the presence of the new processor and automatically changes the system configuration information in the System Setup program. If you installed a second microprocessor (and its voltage regulator module), the following message is displayed:
    
    Two 800 MHz Processors, Processor Bus: 133 MHz, L2 cache 256 KB Advanced
    
    If only one processor is installed, the following message is displayed:
    
    One 800 MHz Processor, Processor Bus: 133 MHz, L2 cache 256 KB Advanced
    

NOTE: After you remove and replace the cover, the chassis intrusion detector will cause the following message to be displayed at the next system startup:

ALERT! Cover was previously removed.

15. Enter the System Setup program, and confirm that the top line in the system data area correctly identifies the installed processors). See "Using the System Setup Program."
    
16. While in the System Setup program, reset the chassis intrusion detector.
    
    

NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector.

17. Run the Dell Diagnostics to verify that the new microprocessor is operating correctly.

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Voltage Regulator Module

CAUTION: See "Safety Instructions" before working inside your system.

NOTICE: See "Protecting Against Electrostatic Discharge."

Figure 28. Voltage Regulator Module Installation

To replace the voltage regulator module in the J2 or J3 connector on the system board, perform the following steps:

1. Remove the computer cover.
   
   
2. Rotate the power supply up and away from the system board.
   
   
3. Remove the cooling shroud.
   
   
4. Remove the microprocessor cooling fan.
   
   
5. Press the voltage regulator module release latches outward until they snap into the open position (see Figure 28).
   
   
6. Align the voltage regulator module with the opening on the connector for the voltage regulator module's printed wiring assembly (PWA), with the component side of the PWA facing the chassis back panel.
   
   
7. Ensure that the connector is firmly seated and that both release latches snap into notches in the PWA.

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Battery

CAUTION: See "Safety Instructions" before working inside your system.

NOTICE: See "Protecting Against Electrostatic Discharge."

Figure 29. Battery Removal

WARNING: 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 system battery, perform the following steps:

1. If possible, enter the System Setup program and print the System Setup screens.
   
   
2. Remove the computer cover.
   
   
3. Remove the bezel (only necessary if you must slide the CD-ROM drive forward to access the battery).
   
   
4. Rotate the power supply up until it locks (see Figure 14).
   
   
5. Remove the cooling air shroud (only necessary if you must disconnect some cables to access the battery).
    
   
6. If you have large hands you may wish to remove the bezel and slide the CD-ROM drive partially out of its slot two or three inches (you should be able to do this without disconnecting the interface and power cables on the CD-ROM drive).
   
   
7. Remove the system battery by carefully prying it out of its socket with your fingers or with a blunt, nonconductive object, such as a plastic screwdriver.

When you replace the system battery, orient the new battery with the "+" facing up. Insert the battery into its socket and snap it into place.

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System Board

CAUTION: See "Safety Instructions" before working inside your system.

NOTICE: See "Protecting Against Electrostatic Discharge."

Figure 30. System Board Removal

To remove the system board, perform the following steps:

1. Remove the computer cover.
   
   
2. Remove the bezel.
   
   
3. Open the internal hard-disk drive bay door. This will move the hard-disk drive cage forward 1 to 3 inches.
   
   
4. Move the external drives (cassette drive and CD-ROM drive) forward in their slots 1 to 3 inches.
   
   
5. Place the computer on its side on a flat surface.
   
   
6. Unlatch and rotate the power supply until it locks (see Figure 14).
   
   
7. Remove the cooling air shroud.
   
   
8. Disconnect all cables from the system board.
   
   
9. Remove all PCI expansion cards from the system board.
   
   
10. Remove the microprocessor fan.
    
    
11. Loosen the thumbscrew that secures the system board to the bottom of the chassis.
    
    
12. Slide the system board toward the front of the chassis until it stops (about 0.25 inch or 6 mm).
    
    
13. Carefully lift the system board out of the chassis (be sure to lift evenly and not twist the system board).
    
    

If you are replacing a system board, remove the memory modules, the primary microprocessor and heat sink, and the voltage regulator module, and install them on the replacement system board. If a secondary microprocessor is installed, remove it and its voltage regulator module and install them on the replacement system board

When you reinstall the system board, before you slide the system board back to lock it in position, push down near each of the nine slots to seat the grounding clip onto its corresponding tab. Push evenly on both sides of the system board as you slide it into position (do not twist the system board).

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