Compaq Pro 4300 Pro 4300 All-in-One Business PC - Page 33

Replacing the Optical Disc Drive

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19. To replace the center access panel, insert the bottom edge of the panel, then press down firmly on each side of the panel working from the bottom to the top so that the panel snaps securely in place. Figure 2-34 Replacing the Center Access Panel 20. Lock any security devices that were disengaged when the center access panel was removed. 21. Reconnect the power cord and external devices, then turn on the computer. Replacing the Optical Disc Drive The optical disc drive is located above the hard drive under the drive access panel on the left side of the computer (when viewed from behind). The drive is secured with one screw. 1. Remove all removable media, such as compact discs or USB flash drives, from the computer. 2. Turn off the computer properly through the operating system, then turn off any external devices. 3. Disconnect the power cord from the power outlet and disconnect any external devices. CAUTION: Regardless of the power-on state, voltage is always present on the system board as long as the system is plugged into an active AC outlet. You must disconnect the power cord to avoid damage to the internal components of the computer. 4. Remove/disengage any security devices that prohibit opening the computer. 5. Place the computer face down on a soft flat surface. HP recommends that you set down a blanket, towel, or other soft cloth to protect the screen surface from scratches or other damage. Replacing the Optical Disc Drive 27

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19.
To replace the center access panel, insert the bottom edge of the panel, then press down firmly on
each side of the panel working from the bottom to the top so that the panel snaps securely in
place.
Figure 2-34
Replacing the Center Access Panel
20.
Lock any security devices that were disengaged when the center access panel was removed.
21.
Reconnect the power cord and external devices, then turn on the computer.
Replacing the Optical Disc Drive
The optical disc drive is located above the hard drive under the drive access panel on the left side of
the computer (when viewed from behind). The drive is secured with one screw.
1.
Remove all removable media, such as compact discs or USB flash drives, from the computer.
2.
Turn off the computer properly through the operating system, then turn off any external devices.
3.
Disconnect the power cord from the power outlet and disconnect any external devices.
CAUTION:
Regardless of the power-on state, voltage is always present on the system board as
long as the system is plugged into an active AC outlet. You must disconnect the power cord to
avoid damage to the internal components of the computer.
4.
Remove/disengage any security devices that prohibit opening the computer.
5.
Place the computer face down on a soft flat surface. HP recommends that you set down a blanket,
towel, or other soft cloth to protect the screen surface from scratches or other damage.
Replacing the Optical Disc Drive
27