COMPAQ PRESARIO CQ42 – DISASSEMBLING PROCEDURE – HOW TO REPLACE THE KEYBOARD

Compaq Presario CQ42 – Disassembling procedure – How to replace the keyboard

HP G42 Notebook PC  - Compaq Presario CQ42 – Disassembling procedure – How to replace the keyboard – How to remove the WLAN – How to remove the optical drive and HDD

HP G42 Notebook PC  - Compaq Presario CQ42:  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.
Remove the battery:
1. Turn the computer upside down on a flat surface.
2. Slide the battery release latch (1) to release the battery.
3. Pivot the battery (2) upward and lift it out of the computer (3).

To insert the battery, insert the rear edge of the battery into the battery bay and pivot the front edge downward until the battery is seated. The battery release latch automatically locks the battery into place.

How to remove Hard drive

Before removing the hard 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
Remove the hard drive:
1. Position the computer with the front toward you.
2. Remove the two Phillips PM2.5×5.0 screws (1) that secure the hard drive cover to the computer.

3. Lift the left side of the hard drive cover (2), swing it forward, and remove the cover (3). The hard drive cover is included in the plastics kit, spare part number 600190-001.

4. Remove the three Phillips PM2.5×4.0 screws (1) that secure the hard drive to the computer.

5. Use the hard drive bracket to lift the hard drive out (2) of the hard drive compartment.

6. Disconnect the hard drive cable from the system board.

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
Remove the optical drive:
1. Position the computer upside down with the front toward you.
2. Remove the Phillips PM2.5x5.0 screw (1) that secures the optical drive to the computer.
3. Insert a flat-bladed screwdriver or similar tool into the access point through the hard drive compartment (2), and then push the drive bracket to the left to release the optical drive.

4. Remove the optical drive (3).

How to remove WLAN module

Before removing the WLAN module, 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 hard drive cover
Remove the WLAN module:
1. Turn the computer upside down with the front toward you.
2. Loosen the 2 Phillips PM2.5×5.0 captive screws (1) that secure the mini-card compartment cover.

3. Lift the cover off the computer (2). The mini-card compartment cover is included in the plastics kit, spare part number 600190-001.

4. Disconnect the two WLAN antenna cables (1) from the WLAN module.
5. Remove the Phillips PM2.0×3.0 screw (2) that secures the WLAN module to the computer. (The edge of the module opposite the slot rises away from the computer.)

6. Remove the WLAN module (3) by pulling it away from the slot at an angle.

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
5. Remove the hard drive
6. Remove the mini-card compartment cover
Remove the keyboard:
1. Turn the computer upside down with the front toward you.
2. Remove the six Phillips PM2.5×6.5 screws that secure the keyboard to the computer.

3. Turn the computer display-side up with the front toward you.

4. Open the computer as far as possible.

5. Release the top edge of the keyboard by lifting it up to disengage the keyboard from the tabs on the top cover (1).
6. Slide the top edge of the keyboard back (2) until it rests against the display.

7. Release the zero insertion force (ZIF) connector (1) to which the keyboard cable is attached and disconnect the keyboard cable (2) from the system board.