User Guide

1. Turn off the power and unplug the AC power cable.

2. Unscrew the 1 cover-mounting screw on the back of the computer.

3. Disengage the 2 snaps on the bottom of the chassis.

4. Slide the cover straight back 1 or 2 inches, and tilt the cover up  and back to pivot the cover from the 
   chassis.

Removing/Replacing the Front Bezel

1. Remove the cover.

2. Facing the computer's front panel, press in on the 4 tabs  at the top and on both sides of the bezel.

3. Tilt the bezel toward you, and pull it away from the chassis.

Removing/Replacing a 5.25-Inch Plastic Front-Panel Insert

1. Remove the cover.

2. Remove the front bezel.

3. Hold the bezel  so that you are facing its interior.  Reach around to the front of the bezel, and pop   
   out the front-panel insert toward you.

Removing/Replacing the 3.5-Inch Plastic Front-Panel Insert

1. Remove the cover.

2. Remove the front bezel.

3. Hold the bezel  so that you are facing its interior.  Press against the tab on each side of the insert  
   until the insert snaps out.

Removing/Replacing Metal Inserts

1. Remove the cover.

2. Remove the front bezel.

3. Hold the insert  in place as you use a 1/4-inch nut driver to unscrew the screws that secure the insert 
   to the computer.

NOTE: If the computer has only 1 drive in the 5.25-inch drive bay, you need to remove all the inserts and bend them at the perforation lines until they snap apart.

Removing/Replacing a 5.25-Inch Drive in the Drive Cage

1. Remove the cover.

2. Remove the front bezel.

3. Remove the plastic inserts if needed.

4. Remove the metal inserts if needed.

5. Disconnect the DC power cable and the interface cable from the back of the drive.

6. To remove the drive, squeeze the tabs  on each side of the drive, and slide it forward and out of the   
   drive bay.

NOTE: When sliding the new drive into its drive bay, make sure that both drive rail tabs snap into place. If they do not, adjust the position of each drive rail by loosening the screws and sliding the drive rail forward or backward as needed.

Removing/Replacing a Drive in the 3.5-Inch Drive Bracket

1. Remove the cover.

2. Remove the front bezel.

3. Remove the plastic inserts if needed.

4. Unscrew the 2 screws that secure the front of the 3.5-inch drive bracket  to the computer.

5. Slide the 3.5-inch drive bracket toward the back of the computer to disengage the 6 mounting tabs on the 
   drive bracket from the slots at the top of the 3.5-inch drive bay.

6. Unscrew the 2 screws on each side of the 3.5-inch drive bracket, and slide the drive out of the drive   
   bracket.

Removing/Replacing a Hard-Disk Drive in the Hard-Disk Drive Bracket

1. Remove the cover.

2. Disconnect any cables from the back of the drive.

3. Remove the screw securing the drive assembly  to the chassis, and raise the hard-disk drive bracket away 
   from the power supply.

NOTE: Lay the computer on its side to remove the hard-disk drive.

4. Remove the 2 screws on each side of the hard-disk drive bracket that secure the drive to the bracket.

5. Slide the drive out of the hard-disk drive bracket.

Removing/Replacing the Power Supply

1. Remove the cover.

2. Disconnect the DC power cables from the system board, from any drives, and from any expansion cards.

3. Remove the front bezel.

4. Remove the drive-bracket mounting screw that secures the hard-disk drive bracket to the computer's back 
   panel, and raise the bracket away from the power supply.

5. While holding the hard-disk drive bracket up, remove the 2 screws that secure the power supply to the   
   computer's back panel and the 2 screws that secure the power supply to the chassis.

   Lift the power supply out of the computer.

NOTE: Lay the computer on its side to remove the power supply; holding the hard-disk drive bracket and removing the power supply at the same time can be difficult.

Removing/Replacing the Card Guide Assembly and Components

1. Remove the cover.

2. Disconnect any cables connected to any expansion cards installed in an expansion slot, and remove the   
   expansion cards.

3. Remove the front bezel.

4. Remove the 2 screws that secure the power switch assembly to the front panel of the computer, and move  
   the power switch out of the way.

5. Disengage the card guide assembly by pressing inward on the two mounting tabs that secure the assembly  
   to the front panel.

6. Disconnect the cables for the hard-disk drive access indicator assembly, the power indicator assembly,  
   and the reset switch assembly from the system board, and then lift the card guide assembly out of the    
   computer.

Removing/Replacing the Reset Switch Assembly

1. Remove the front bezel.

2. Disconnect the reset switch cable from the RESET connector on the system board

3. Thread the cable through the ferrite cylinder attached to the card guide.

4. Use a small screwdriver to push the reset switch assembly through its bracket in the card guide and into 
   the interior of the computer.

Removing/Replacing the I/O Extender Boards

NOTE: The extender boards are 2 expansion cards installed in the computer. The video connector and parallel port connector are on one extender board; the 2 serial port connectors are on the other one.

1. Disconnect any cables from the ports on the extender boards.

2. Remove the retaining screw from the card-mounting bracket attached to the extender board

3. Grasp the extender board, and carefully pull it out of its connector on the system board.

Removing/Replacing the Video-Memory Upgrade Chips

1. Insert the chip-removal tool into the openings at the ends of the chip.

2. Press inward on the sides of the tool.

3. Lift the chip  out of its socket.

Removing/Replacing the Heat Sink Assembly and Microprocessor

1. Remove the cover.

2. Remove any expansion cards that block access to the microprocessor.

3. Remove the heat-sink securing clip  from the microprocessor/heat sink assembly.

   Press on the back of the clip with a small screwdriver to release it.

4. Push outward and then upward on the microprocessor-socket release lever  to rotate it to its fully      
   vertical position.

5. Lift the microprocessor/heat sink assembly out of its socket.

6. Use the dented corner of the chip to orient the replacement chip in the same direction as the chip you  
   removed.

Removing/Replacing the Battery

1. Remove the cover.

2. Pry the battery  out of its socket with a blunt, nonconductive object.

Removing/Replacing the System Board

1. Remove the cover.

2. Disconnect any cables attached to the port connectors on the I/O panel.

3. Disconnect the cables attached to the system board.

4. Remove any expansion cards.

5. Remove the 5 screws that secure the system board to the bottom of the computer.

6. Lift the left edge of the system board up slightly, and then pull the system board to the left until the 
   plastic standoffs in the system board can be lifted out of the slots in the floor of the computer.  Then 
   remove the system board from the computer.