User Guide

1 Interface cable 2 Power cable 3 Power input connector 4 Interface connector

Check all cable connections. Fold cables out of the way to provide airflow for the fan and cooling vents.

System Power Supply

1 Securing screw hole 2 AC power receptacle 3 Power supply 4 System board DC power connectors (2) 5 Drive DC power connectors (3)

1. Disconnect the AC power cable from the back of the power supply.
   
   
2. Disconnect the DC power cables from the system board and the drives. 
   
   
3. Remove the screw on the side of the chassis that secures the power supply.
   
   
4. Remove the screw below the AC power receptacle at the back of the chassis. 
   
   
5. Slide the power supply toward the center of the computer approximately 1 inch.
   
   
6. Lift the power supply up and out the computer chassis. 

Expansion-Card Cage

Figure 18. Expansion-Card Cage Removal

1 Securing lever 2 Expansion-card cage 3 Tabs (2) 4 Hooks (2)

To remove the expansion-card cage from the chassis, perform the following steps:

1. Remove the computer cover.

2. Examine the cables connected to expansion cards through the back-panel openings, and disconnect any cables that will not reach to where the cage must be placed when it is removed from the chassis.
   
   
3. Locate the securing lever and rotate the lever upward until it stops in an upright position.
   
   
4. Lift the expansion-card cage up and out of the chassis.

To replace the expansion-card cage into the chassis, perform the following steps:

1. With the securing lever in the upright position, align the tabs in the side of the expansion-card cage with the mating hooks on the left side of the chassis wall (see Figure 18). Slide the expansion-card cage into place.
   
   
2. Rotate the securing lever downward until it is flush with the top side of the chassis. Make sure that the riser board is fully seated in the RISER connector on the system board.
   
   
3. Reconnect any cables you removed in step 2 of the previous procedure.

Riser Board

Figure 19. PCI Riser Board

1 Auxiliary power indicator LED (AUX_LED) 2 Wakeup On LAN jumper (WOL) 3 PCI expansion slot 1 (PCI1) 4 PCI expansion slot 2 (PCI2)

The chassis has a PCI riser board that has two PCI expansion-card connectors (see Figure 19).

To remove the PCI riser board, perform the following steps:

1. Remove the expansion-card cage.
   
   
2. Remove the expansion cards installed in the slots.
   
   
3. Remove the screws securing the riser board to the expansion-card cage.
   
   
4. Lift the riser board off the expansion card cage.

The subsections that follow contain procedures for removing system board components, which are shown in Figure 20.

Figure 20. System Board Components

1 NIC connector 2 Video connector 3 Fan power connector 4 Serial port 2 connector 5 USB connectors (2) 6 Mouse (upper) and keyboard (lower) connectors 7 Parallel port (upper) and serial port 1 (lower) connectors 8 System board jumpers 9 Riser board connector 10 EIDE1 connector 11 EIDE2 connector 12 Diskette/tape-drive connector 13 Auxiliary power indicator 14 DIMM connectors (2) 15 3.3 VDC power connector 16 Control panel connector 17 DC power connector

Figure 21 shows the layout of jumpers on the system board.

Figure 21. System Board Jumpers

Jumper pins are small groups of two or more pins on a circuit board. Plastic jumpers containing a wire fit down over the pins. The wire connects the pins and creates a circuit.

NOTICE: Make sure that your system is turned off before you change a jumper setting. Otherwise, damage to your system or unpredictable results may occur.

To change a jumper setting, pull the jumper off its pin(s) and carefully fit it down onto the pin(s) indicated.

Dell shipped your computer with a PSWD jumper installed, meaning that the password features for this computer are enabled. When you remove the jumper, or when you install the jumper on only one of the two pins, the password features are disabled.

Table 1 lists the labels for connectors and sockets on your system board, and it gives a brief description of their functions.

Table 1. System Board Connectors and Sockets

Connector or Socket	Description
AUX_LED	Auxiliary power indicator
B1	Battery socket
DIMM_x	DIMM socket
DSKT	Diskette/tape drive interface connector
ENET	Integrated NIC connector
FAN	Microprocessor fan connector
IDEn	EIDE interface connector
KYBD	Keyboard connector
MICROPROCESSOR	Microprocessor connector
MONITOR	Video connector
MOUSE	Mouse connector
PANEL	Control panel connector
PARALLEL	Parallel port connector; sometimes referred to as LPT1
POWER_1	Main power input connector
POWER_2	3.3-volt (V) power input connector
RISER	Riser board connector
SERIALn	Serial port connectors
USB	USB connectors

 

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Expansion Cards

The small-form-factor GX100 chassis can accommodate up to two half-length 32-bit PCI expansion cards.  Figure 22 shows an example of a 32-bit PCI expansion card.

Figure 22. 32-Bit PCI Expansion Card Example

Removing an Expansion Card

CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures."

To remove an expansion card, perform the following steps.

1. Remove the computer cover.
   
   
2. If necessary, disconnect any cables connected to the card.
   
   
3. Remove the expansion-card cage.
   
   
4. Remove the screw on the mounting bracket of the card you want to remove.
   
   
5. Grasp the card by its outside corners, and ease it out of its connector.
   
   
6. If you are removing the card permanently, install a metal filler bracket over the empty card-slot opening.
   

NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain Federal Communications Commission (FCC) certification of the system. The brackets also keep dust and dirt out of your computer.

7. 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.

8. To reset the chassis intrusion detector, enter System Setup and reset Chassis Intrusion to Enabled or Enabled-Silent.
   
   See the online System User's Guide for detailed information on 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.

Figure 23. Expansion Card Installation

1 Expansion card 2 Card-edge connector 3 Riser board 4 Expansion-card connector 5 Expansion-card cage

CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures."

CAUTION: Some network cards automatically start up the system when they are connected. To guard against electrical shock, be sure to unplug your computer from its electrical outlet before installing any expansion cards

To install an expansion card, perform the following steps:

1. Prepare the expansion card for installation, and remove the computer cover.
   
   See the documentation that came with the expansion card for information on configuring the card, making internal connections, or otherwise customizing it for your system.
   
   
2. Remove the screw and remove the metal filler bracket that covers the card-slot opening for the expansion slot you intend to use (see Figure 24).
   
   Save the screw to use when installing the expansion card later in this procedure.

Figure 24. Filler Bracket Removal

1 Filler bracket

3. Insert the expansion card into the expansion-card connector.
   
   If the expansion card is full-length, insert the front end of the card into the corresponding card guide on the inside front of the chassis as you insert the card into its connector. Insert the card's edge connector firmly into the expansion-card slot.

4. When the card is firmly seated in the connector, secure the card's mounting bracket to the chassis with the screw you removed in step 2.
   
   
5. Connect any cables that should be attached to the card.
   
   See the documentation for the card for information about the card's cable connections.
   
   
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.

7. To reset the chassis intrusion detector, enter System Setup and reset Chassis Intrusion to Enabled or Enabled-Silent.

See the User's Guide for detailed information on 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.

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DIMMs

Figure 25. DIMM Removal

1 Ejectors (2)

 

CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures."

To remove a DIMM, perform the following steps:

1. Push outward on the two DIMM socket ejectors simultaneously until the DIMM is released from its socket.
   
   
2. Lift the DIMM away from the socket.

To install a DIMM, press the DIMM fully into the socket while closing the ejectors to lock the DIMM into the socket (see Figure 26).

Figure 26. DIMM Installation

1 Ejectors (2) 2 Notches (2)

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Microprocessor/Heat Sink Assembly

Figure 27. Microprocessor/Heat Sink Assembly Removal

1 Securing clip 2 Press here to release securing clip

CAUTION: The microprocessor SEC cartridge/heat sink assembly can get extremely hot. Be sure that the assembly has had sufficient time to cool before you touch it.

CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures."

NOTE: Dell recommends that only a technically knowledgeable person perform this procedure.

To replace a microprocessor, perform the following steps:

1. Remove the computer cover.
   
   
2. Locate the microprocessor socket on the system board.
   
   
3. Unplug the fan power connector on the system board
   
   
4. Remove the screws securing the fan to the top of the heat sink assembly. Then remove the fan.
   
   
5. Remove the metal clip that secures the heat sink to the microprocessor socket. Then remove the heat sink from the microprocessor chip.
   
   
6. Press down on the folded part of the clip with a small screwdriver to release the clip (see Figure 27).
   
   The securing clip hooks over tabs on the sides of the socket.
   

NOTICE: Be careful not to bend any of the pins when removing the microprocessor chip from its socket. Bending the pins can permanently damage the microprocessor chip.

7. Remove the microprocessor chip from the socket.
   

Your microprocessor socket is a zero insertion force (ZIF) socket with a lever-type handle that secures the chip in, or releases it from, the socket.

To remove the chip, pull the microprocessor-socket release lever straight out until the chip is released (see Figure 28). Then remove the chip from the socket. Leave the release lever extended so that the socket is ready for the new microprocessor.

Figure 28. Microprocessor Removal

1   Microprocessor chip 2   Release lever 3   Microprocessor socket

CAUTION: Ground yourself by touching an unpainted metal surface on the back of the computer.

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

NOTICE: Be careful not to bend any of the pins when unpacking the microprocessor. Bending the pins can permanently damage the microprocessor.

8. Unpack the new microprocessor.
   
   If any of the pins on the chip appear to be bent, see your Installation and Troubleshooting Guide for instructions on obtaining technical assistance.
   
   
9. Align the pin-1 corner of the microprocessor chip with the pin-1 corner of the microprocessor socket (see Figure 29).
   
   

   NOTE: Identifying the pin-1 corners is critical to positioning the chip correctly.


The pin-1 corner of the microprocessor is the squared off corner (see Figure 29).

10. Install the microprocessor chip in the socket (see Figure 29).
    

If the release lever on the microprocessor socket is not all the way out, move it to that position now.

With the pin-1 corners of the chip and socket aligned, align the pins on the chip with the holes in the socket. Set the chip lightly in the socket and make sure all pins are headed into the correct holes. Because your system uses a ZIF microprocessor socket, there is no need to use force (which could bend the pins if the chip is misaligned). When the chip is positioned correctly, it should seat itself in the socket with minimal pressure.

When the chip is fully seated in the socket, pivot the microprocessor-socket release lever back toward the socket until it snaps into place, securing the chip.

Figure 29. Microprocessor Chip Installation

1 Pin-1 corners of chip and socket aligned

CAUTION: Ground yourself by touching an unpainted metal surface on the back of the computer.

11. Unpack the heat sink included in your upgrade kit.
    
    Peel the release liner from the adhesive tape that is attached to the bottom of the heat sink.
    
    
12. Place the heat sink on top of the microprocessor chip (see Figure 30).

Figure 30. Heat Sink Installation

1 Fan screws (2) 2 Fan 3 Securing clip 4 Heat sink 5 Celeron™ microprocessor 6 Microprocessor ZIF socket

13. Replace the heat sink securing clip.
    
    Orient the clip as shown in Figure 30, and hook the unfolded end of the clip over the tab on the top edge of the socket. Then press down on the folded end of the clip to snap the clip over the tab on the bottom edge of the socket.
    
    
14. Replace the fan assembly and secure it with two thumbscrews. Then connect the fan power cable to the FAN connector on the system board .
    
    
15. Install the microprocessor fan cable connector to the FAN connector on the system board.
    
    
16. Replace the computer cover, and then reconnect your computer and peripherals to their power sources and turn them on.
    
    As the system boots, it detects the presence of the new microprocessor and automatically changes the system configuration information in System Setup.
    
    
17. Enter System Setup and confirm that the Microprocessor option correctly identifies the installed microprocessor.
    
    
18. Run the Dell Diagnostics to verify that the new microprocessor operates correctly.

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System Battery

Figure 31. System Battery Removal

1 Battery 2 Battery socket

 

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 system battery, perform the following steps:

1. If possible, enter System Setup and print the System Setup screens.
   
   
2. Remove the system battery by carefully prying it out of its socket with your fingers or with a blunt, nonconducting 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

Figure 32. System Board Removal

To remove the system board, perform the following steps:

1. Disconnect all cables from their connectors at the back of the computer.
   
   
2. Remove the drive shelf assembly.
   
   
3. Remove the expansion-card cage.
   
   
4. Remove the hard-disk drive/bracket.
   
   
5. Disconnect all cables from the system board.
   
   
6. Remove the screw that secures the system board to the bottom of the chassis (see Figure 32).
   
   
7. Slide the system board toward the front of the chassis until it stops.
   
   
8. Carefully lift the system board out of the chassis (be sure to lift evenly and not twist the system board).

To replace a system board, perform the following steps:

1. Remove the DIMMs and the microprocessor/heat sink assembly and install them on the replacement board.
   
   
2. Set the jumpers on the new system board so that they are identical to those on the old board, unless a microprocessor upgrade is being installed.
   
   
3. Push down near each slot to engage the grounding clip onto its corresponding tab.
   
   
4. 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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