System Board

System Board Removal

To remove the system board in the small form-factor chassis, perform the following steps:

1. Disconnect all cables from their connectors at the back of the computer, observing all safety precautions in "Precautionary Measures."
   
   
2. Remove the computer cover.
   
   
3. Remove the drive shelf assembly.
   
   
4. Remove the expansion-card cage.
   
   
5. Remove the hard-disk drive/bracket assembly.
   
   
6. Disconnect all cables from the system board.
   
   
7. Remove the screw that secures the existing system board to the bottom of the chassis
   
   Before you remove the existing system board, visually compare the replacement system board to the existing system board to make sure that you have the correct part.
   
   
8. Slide the system board toward the front of the chassis until it stops.
   
   
9. Carefully lift the system board out of the chassis (lift evenly and do not twist the system board). Place the system board that you just removed next to the replacement system board.

System Board Components

The subsections that follow contain procedures for removing system board components, which are

System Board Components

1 Optional audio connectors 2 NIC connector 3 Standby power LED (AUX_PWR) 4 Video connector 5 CD-ROM drive audio cable connector (optional) 6 Fan power connector 7 Telephony connector (optional) 8 Serial port 2 connector 9 USB connectors (2) 10 Mouse (upper) and keyboard (lower) connectors 11 Parallel port (upper) and serial port 1 (lower) connectors 12 Riser board connector 13 System board jumpers 14 IDE1 connector 15 IDE2 connector 16 Diskette/tape-drive connector 17 PC speaker connector 18 Battery 19 DIMM sockets (2) 20 Microprocessor package 21 3.3-V power connector 22 Control panel connector 23 DC power connector

System Board Jumper

Figure 21 shows the location of the PSWD jumper on the system board.

Figure 21. System Board Jumper

Expansion-Card Cage

Expansion-Card Cage Removal

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

System Power Supply

Power Supply Removal

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

To remove the system power supply in the small form-factor chassis, perform the following steps:

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.
   
   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 them from being pinched or crimped.
   
   
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.

To replace a CD-ROM drive, perform the following steps:

To replace a CD-ROM drive, perform the following steps:

1. Align the tabs on the bottom of the CD-ROM drive with the notches on the drive shelf, and slide the drive toward the back of the shelf until it snaps into place (see Figure 15).

CD-ROM Drive Replacement

1 Tabs (2) 2 Notches (2)

2. Connect a power cable and an interface cable to the appropriate connectors on the back of the drive (see Figure 16).

CD-ROM Drive Cable Attachment

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.

3. Replace the computer cover; reconnect your computer and peripherals to their electrical outlets, and turn them on.
   
   
4. Update your system configuration information.

Set the Drive 1 option under Drives: Primary to Auto. See the online System User's Guide for more information.

5. Verify that your system works correctly by running the Dell Diagnostics (see the online System User's Guide for complete information).

CD-ROM Drive Removal

1 Drive release tab

Hard-Disk Drive Cable Attachment

Hard-Disk Drive Cable Attachment

1 IDE1 connector 2 EIDE cable 3 Power cable