4
Removal and replacement procedures
Adherence to the procedures and precautions described in this chapter is essential for proper service. After
completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all
components operate properly.
NOTE:
Not all features listed in this guide are available on all computers.
NOTE:
HP continually improves and changes product parts. For complete and current information on
supported parts for your computer, go to
, select your country or region, and then
follow the on-screen instructions.
Preparation for disassembly
Routine care, SATA drive guidelines, and disassembly preparation on page 12
for initial safety procedures.
1.
Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2.
Disconnect the power from the computer by unplugging the power cord from the computer.
IMPORTANT:
Turn off the computer before disconnecting any cables.
Regardless of the power state, voltage is always present on the system board as long as the system is
plugged into an active AC outlet. In some systems, the cooling fan is on even when the computer is in the
Standby or Suspend modes. Always disconnect the power cord before servicing a unit.
3.
Disconnect all external devices from the computer
4.
If the computer is on a stand, remove the computer from the stand.
CAUTION:
Beware of sharp edges inside the chassis.
20
Chapter 4 Removal and replacement procedures
