Upgrading and Servicing Your PC (1999 - 2000)

Upgrading and Servicing Your PC (1999 - 2000)
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In this document:
Introduction
Before you begin
Shutting down Windows
Removing the system cover
Removing the motherboard access panel
Replacing the motherboard access panel
Removing the front panel
Replacing the front panel
This document pertains to HP 65xx and 66xx Desktop PCs that came with the following case:

Introduction
The following steps and illustrations provide you with a basic overview of what you need to do to take apart and reassemble your computer.

Before you begin

WARNING: To avoid damage to the system board or power supply, do not exceed a total of 120 watts power draw.

CAUTION: Do not overload the power supply by installing add-in boards that draw excessive current.


CAUTION: This product contains components that are easily damaged by Electrostatic Discharge (ESD). To reduce the chance of ESD damage, work over a non-carpeted floor, use a static dissipative work surface (like a conductive foam pad), and wear an ESD wrist strap that is connected to a grounded surface, like the metal frame of a computer.

Shutting down Windows
Before working on the system, you must properly turn off Windows and turn off the power to the computer, monitor, and any other peripherals. Follow the procedure below to shut down Windows:

On the bottom left corner of the Windows main screen is the Start button. Click Start once.
Click Shut Down. The Shut Down Windows dialog box appears.
Select Shut Down and click OK.
Wait a few seconds until the "It’s now safe to turn off your computer" message appears. You can turn off the power to the computer by pressing and holding the power button on the front of the PC.

Removing the system cover

Observe all Safety and ESD precautions stated in the Warnings and Cautions as noted above.
Turn off all devices that are connected to the PC.
Turn off the power to the PC.
Identify and tag all cables. Disconnect the cables from the system. Be sure to disconnect the modem cable BEFORE disconnecting the power cord.
Remove the 3 screws from the back of the case (1 on each side near the bottom and at the center of the top) on the back of the unit.

Figure 1: Cover and screws
From the rear of the system, pull back firmly on the cover to release it from the tabs on the frame, then lift the cover straight up and off the unit.

Removing the motherboard access panel
To open the panel without removing it
The right side of the computer, while facing the front of the system, is the Motherboard Access Panel. The motherboard is mounted to this panel and the panel must be opened slightly or removed to gain access to the right side of the inside case. To open the panel without removing it, follow the procedure below:

Remove the 4 screws that secure the Motherboard Access Panel to the case. Two are on the right side, and two are on the back panel.

Figure 2: Access panel screws
Grasp the opening near the front edge of the panel and open it away from the case.

Figure 3: Access panel
Pull panel out about 3 to 4 inches (7.62 to 10.16 centimeters) from the front edge of the case. You will now have access inside the case to remove drive bay screws on devices and the tabs for removing the drive bay filler bezel and the Front Panel locking tabs.

To completely remove the panel
To completely remove the Motherboard Access Panel, follow the procedure below:

Remove the 4 screws that secure the Motherboard Access Panel to the case. Two are on the right side, and two are on the back panel.
Grasp the opening near the front edge of the panel and pull it slightly away from the case. The panel will pivot around an interlocking hinge point on the back panel. Pull the panel out about 3 to 4 inches (7.62 to 10.16 centimeters) from the front edge of the case.

Figure 4: Access panel
Reach inside the case, and unplug all cables from the motherboard. Carefully label each cable and note its location on the motherboard.
Continue to open the access panel until the panel hinge can be removed from the slot on the rear case.

Figure 5: Slot for access panel
Pull the panel with the motherboard away from the case (see figure 6).

Figure 6: Access panel removed

Replacing the motherboard access panel
To replace the motherboard access panel, follow the procedure below:

Holding the access panel at an angle to the case, slide the hinge (on the back side, near the expansion board slots) into the slot on the back of the case.

Figure 7: Slot for access panel
Close the access panel, making sure the 2 parts of the hinge remain interlocked. Stop when the panel is at about a 45-degree angle from the side of the chassis.
Reconnect all cables to the motherboard.
fully close the acecess panel.
Secure the access panel using 4 screws.

Removing the front panel
To remove the power switch and front panel LEDs, you will first need to remove the front panel. Before removing the front panel, you will need to remove the device bay cover and the filler panel, which is below the CD-ROM drive.

Remove the 4 screws that secure the Motherboard Access Panel to the chassis and pivot the panel out to a 45-degree angle.
Remove the device bay cover by pressing down gently on the depression at the very top center of the cover, just below the CD-ROM drive. This will cause the cover to pop off.
With the device bay cover removed, you will have access to the filler panel. Remove the filler panel by releasing its 2 plastic tabs, one on each side of the chassis.
The front panel can now be removed. The front panel is held in place by 6 tabs, 3 on each side on the inside of the chassis.
Depress the bottom tab on both sides at the same time and pull the panel away from the chassis slightly, preventing the tabs from snapping back in place.
Depress the middle tab on both sides at the same time and pull the panel away from the chassis slightly, preventing the tabs from snapping back in place.
Depress the top tab on both sides and pull the panel away from the chassis.

Replacing the front panel
To replace the front panel, reverse the procedure for removing the panel.

Position the 6 tabs on the front panel with the chassis slots and press the panel forward making sure all 6 tabs snap into position.
Replace the top and bottom filler panel as appropriate making sure the 4 tabs, 2 on each side, snap into place in the device cage.
Replace the device bay cover, if appropriate.