Removal and replacement procedures4
Adherence to these procedures and precautions 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
about supported parts for your computer, go to https://partsurfer.hp.com/partsurfer/, select your
country or region, and then follow the on-screen instructions.
Preparation for disassembly
Use this information to properly prepare to disassemble and reassemble the computer.
See 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.
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.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer
4. (Select products only) If the computer is on a stand, remove the computer from the stand.
CAUTION: Beware of sharp edges inside the chassis.
NOTE: During disassembly, label each cable as you remove it, and note its position and routing. Keep
all screws with the removed components.
Dust filter
To remove the dust filter, use this procedure and illustration.
Before removing the dust filter, prepare the computer for disassembly (see Preparation for disassembly
on page 20).
Remove the dust filter:
20
Chapter 4 Removal and replacement procedures
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