Saturday, March 19, 2016

HP Laptop – HP 250 G3 Notebook - 256 G3 Notebook – Disassembling procedure – How to disassemble the kay board – How to disassemble the top cover – How to disassemble the Display unit – Laptop repair and service

Category: Laptop repair and Service 

Contents of this article 

  • How to remove the Keyboard 
  • How to remove the top cover 
  • How to remove the Display 



HP 250 G3 Notebook - 256 G3 Notebook

DISASSEMBLING PROCEDURE 
How to remove Battery
Before disassembling the computer, 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.
To remove the battery:
1. Position the computer upside down on a flat surface.
2. Slide the battery lock latch (1), and then slide the battery release latch (2) to release the battery.
3. Remove the battery from the computer (3).
How to remove Optical drive
Before removing the optical drive, 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
To remove the optical drive:
1. Remove the Phillips PM2.5×5.0 screw (1) that secures the optical drive to the computer.
2. Remove the optical drive (2) by sliding it out of the optical drive bay.
How to remove Keyboard
Before removing the keyboard, 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
To remove the keyboard:
1. Position the computer upside down with the front toward you.
2. Remove the two Phillips PM2.5×5.0 screws that secure the keyboard to the computer.
3. Position the computer upright with the front toward you.
4. Lift to rotate up the top of the keyboard (1), and then lift the keyboard (2) to disengage it from the computer.
5. Rotate the keyboard over onto the palm rest (1), and the lift the ZIF connector (2) and disconnect the keyboard cable from the system board (3)
How to remove Display subcomponents (bezel, webcam, panel)
Before removing display subcomponents while the display assembly is still attached to the computer, 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
To remove the display bezel, webcam/microphone module, and raw display panel:
1. Position the computer upright with the front toward you, and then open it.
2. Flex the inside of the top edge (1), the left and right sides (2), and the bottom edge (3) of the display bezel until the bezel disengages from the display enclosure.
3. Remove the display bezel (4).
4. To remove the webcam/microphone module:
a. Position the display assembly with the top edge toward you.
b. Lift to disengage the adhesive that secures the webcam/microphone module to the display, and then remove the module enough to access the cable connection on the module (1).
c. Disconnect the cable (2) from the module.
5. To remove the display panel:
a. Remove the four Phillips PM2.5×3.5 screws that secure the display panel to the enclosure.
b. Rotate the display panel onto the keyboard to gain access to the display cable connection on the back of the panel (1).
c. On the back of the display panel, release the adhesive strip (2) that secures the display panel cable to the display panel, and then disconnect the cable (3).
How to remove Top cover
Before removing the top cover, 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
5. Remove the keyboard
To remove the top cover:
1. Position the computer upside down with the front toward you.
2. Remove the rear covers by prying off the two rubber feet (1), removing the two Phillips PM2.5×8.0 screws (2) that secure the rear covers to the computer, and then lifting the rear covers off the computer (3).
3. Remove the two Phillips broadhead PM2.5×2.0 screws from the optical drive bay (4).
4. Remove the seven Phillips PM2.5×5.0 screws that secure the top cover to the computer.
5. Position the computer upright with the front toward you.
6. Disconnect the power button board cable (1) and the touchpad button board cable (2).
7. Remove the four Phillips PM2.5×5.0 screws (3) that secure the top cover to the computer.
8. Lift the rear edge of the top cover (1) until it disengage from the base enclosure.
9. Remove the top cover (2).