Preparing The Computer For Disassembly; Disconnecting The Ac Power - HP ProSignia 120 Maintenance And Service Manual

5.3 Preparing the Computer for Disassembly

Before beginning the removal and replacement procedures, complete the following:
1. Disconnect the modem line cord.
2. Disconnect the AC power and any external devices.
3. Remove the battery pack(s).
4. Remove the MultiBay device.
5. Remove any PC Cards.
WARNING: To reduce the risk of personal injury from hot surfaces, allow the
!
internal system components to cool before touching.

5.3.1 Disconnecting the AC Power

Before beginning service procedures on the computer, remove all power from the
system to prevent damage to the equipment or personal injury. Select the appropriate
steps, depending on whether the computer is docked or not.
Computer is Docked
If the computer is docked in the convenience base, it must be undocked before
performing additional work. Complete the following steps to undock the computer.
1. Close all applications and exit the operating system.
2. Turn off the computer.
3. Disconnect the AC power and any external cables.
4. Close the computer.
5. Pull the docking lever forward to undock the computer.
6. Lift the computer from the convenience base.
7. Remove the battery pack.
Computer is Not Docked
If the computer is not docked, perform the following steps:
1. Close all applications and exit the operating system.
2. Turn off the computer.
3. Turn off and disconnect any external devices.
4. Disconnect the AC power cord from the power source.
5. Disconnect the AC power cord from the computer.
6. Remove the battery pack.
Removal and Replacement Procedures 5-3