Removal And Replacement Procedures; Preparing To Disassemble The Computer - HP TouchSmart 9300 Elite Maintenance & Service Manual

7

Removal and Replacement Procedures

The following sections provide information about disassembling various components of the All-in-
One.

Preparing to disassemble the computer

To avoid injury and equipment damage, always complete the following steps in order, when opening
the All-in-One.
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:
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. Disconnect all cables from the ports.
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.
CAUTION:
beginning these procedures, ensure that you are discharged of static electricity by briefly touching a
grounded metal object.
WARNING!
Regardless of the power-on state, voltage is always present on the system board
Static electricity can damage the electronic components of the computer. Before
Beware of sharp edges inside the chassis.
Preparing to disassemble the computer 33