2Q-Module 1 Lesson 7: System Unit Disassembly

At the end of this module, you should be able to:

1. operationally define disassemble and assemble on the premise of computer system servicing;

2. identify the steps on how to disassemble and assemble a system unit; and

3. identify the steps on connecting peripherals of a computer.

• Assemble is the process of joining/putting together the separate component parts of a computer.

• is the process of breaking down a device into separate parts.

• ​A device may be disassembled to help determine a problem, to replace a part, or take the parts and use them in another device. For example, if a computer has a bad processor, you may need to open the computer case, disassemble the heat sink and processor, and manually replace it.

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• ​For safety purposes, unplug the cables that are plugged in to the computer (power, USB, mouse, keyboard, internet, Ethernet, modem, AMFM antenna, and cable TV).

• ​Move the PC to a clean work space.

• Unscrew the screws at the back of the computer chassis.

• ​Remove the side panels

• Unplug the fan from the motherboard.

• ​unscrew the fan from the outside part.

• ​lift the fan out of the system unit.

• Unplug the CPU fan from the motherboard.

  Remove the fan along with the heat sink by unscrewing the four screws securing it to the motherboard.

• Unplug all wires coming from the power supply connected to the motherboard, CD/DVD drives, hard disk drive and other parts.

• Unscrew the four screws holding the power supply in place on the back of the computer. Push the power supply from the outside and then lift it out.

• Unplug the Integrated Drive Electronics (IDE) ribbon or Serial Advanced Technology Attachment (SATA) cable from the back of the drive.

• ​Pull on the tab or unscrew the screws securing the drive-in place, then push it out from the inside.

• Unplug the IDE or SATA cable from the motherboard and the hard drive.

  2. Pull on the tab or unscrew the HDD from the drive bay, then slide the HDD out.

• Push down on both tabs holding the RAM in place, which are located at both ends of the RAM.

• Remove the screws securing the motherboard to the case.

  Lift the motherboard out of the frame.