HP 255 G4, Maintenance And Service Manual

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Before removing the display assembly, follow these steps:
1. Shut down 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 all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the computer.
4. Remove the battery (see Battery on page 28 ).
5. Remove the optical drive (see Optical drive on page 29 ), if installed.
6. Remove the bottom cover (see Bottom cover on page 35 ).
To remove the display assembly:
1. Disconnect the display panel cable (1) from the system board.
2. Remove the four Phillips PM2.5×5.0 screws (2) (two from each hinge), and one Phillips PM2.5×4.0 screw
(3) (on the right hinge), and one broadhead Phillips PM2.0×2.0 screw (4) (on the left hinge) that secures
the display assembly to the computer.
3. Lift the display to bend the hinges upward (5) , and then separate the display from the computer (6) .
Component replacement procedures 55