CSS3 M6

COMPUTER SYSTEM SERVICING 3
NAME: GRADE AND STRAND:

ADDRESS: CONTACT NUMBER:
Topic: DISASSEMBLING AND ASSEMBLING A COMPUTER SYSTEM (Module 6 – Quarter 1)/ First Semester
WHAT I NEED TO KNOW
This module is specifically crafted to focus on Process and Delivery enriched with modular and online activities that will
assess your level in terms of skills and knowledge. Learning procedures are divided into different sections such as: What you
are supposed to learn, What I know, what’s in, what’s more, What I can do, Assessment, What I can show. You will be
introduced to different learning activities preparing you to be skillful before you take the plunge into the world of work as a
hardware service provider and to feel more confident while providing support where needed. Indeed, as learners of hardware
servicing, you are a crucial link in the emergency response process. Ideally, everyone should know what to do in an
emergency situation, but proper training can help an individual provide basic care.
By the end of the lesson, you are expected to;

1. Identify the different parts of computer system unit; and
2. Perform disassembly and assembly in computer system unit.
WHAT I KNOW
DIRECTION: Answer the following questions accordingly.

*Have you ever experienced disassembling and assembling computer system unit?
If YES, what part of the process do you think challenged you?
if NO, how do you feel that you are about to open one in this lesson?
WHAT’S IN
Parts of Computer System
The computer system is made up of following external
devices:
•CPU cabinet
•Monitor
•Keyboard
•Mouse
•Printer/scanner (if attached)
Computer assembly is a process in which all the internal components of the computer system are fitted
to make the computer functional. The main component involves CPU, motherboard, memory, disk drives, etc. There is a
proper process of attachment and installation of each and every component.
1|COMPUTER SYSTEM S E RVI C I N G 3 ICT GRADE 1 2

How to Disassemble a Computer
Follow these seven steps carefully.
Step 1: Detach the Power Cable

The disassembling of the computer system starts with externally connected device detachment. Make sure the computer system is
turned off, if not then successfully shut down the system and then start detaching the external devices from the computer system.
It includes removing the power cable from electricity switchboard, then remove the cable from SMPS (switch mode power
supply) from the back of the CPU Cabinet. Do not start the disassembling without detaching the power cable from the computer
system. Now remove the remaining external devices like keyboard, mouse, monitor, printer or scanner from the back of CPU
cabinet.
Step 2: Remove the Cover

The standard way of removing tower cases used to be to undo the screws on the back of the case, slide the cover back about an
inch and lift it off. The screwdrivers as per the type of screw are required to do the task.
Step 3: Remove the Adapter Cards

Make sure if the card has any cables or wires that might be attached and decide if it would be easier to remove them before or
after you remove the card. Remove the screw if any, that holds the card in place. Grab the card by its edges, front and back, and
gently rock it lengthwise to release it.
Step 4: Remove the Drives

Removing drives is easier. There can be possibly three types of drives present in your computer system, Hard disk drive,
CD/DVD/Blu-ray drives, floppy disk drives (almost absolute now a day). They usually have a power connector and a data cable
attached from the device to a controller card or a connector on the motherboard. CD/DVD/Blu-ray drive may have an analog cable
connected to the sound card for direct audio output.
The power may be attached using one of two connectors, a Molex connector or a Berg connector for the drive. The Molex
connector may require to be wiggled slightly from side to side and apply gentle pressure outwards. The Berg connector may just
pull out or it may have a small tab which has to be lifted with a screwdriver.
Now pull data cables off from the drive as well as motherboard connector. The hard disk drive and CD/DVD drives have two
types of data cables. IDE and SATA cables. The IDE cables need better care while being removed as it may cause the damage to
drive connector pins. Gently wiggle the cable sideways and remove it. The SATA cables can be removed easily by pressing the tab
and pulling the connector straight back.
Now remove the screws and slide the drive out the back of the bay.
Step 5: Remove the Memory Module

Memory modules are mounted on the motherboard as the chips that can be damaged by manual force if applied improperly. Be
careful and handle the chip only by the edges. SIMMs and DIMMs are removed in a different way:
 SIMM - Gently push back the metal tabs while holding the SIMM chips in the socket. Tilt the SIMM chip away from the tabs
until a 45% angle. It will now lift out of the socket. Put SIMM in a safe place.
 DIMM - There are plastic tabs on the end of the DIMM sockets. Press the tabs down and away from the socket. The DIMM
will lift slightly. Now grab it by the edges and place it safely. Do not let the chips get dust at all.
Step 6: Remove the Power Supply

The power supply is attached into tower cabinet at the top back end of the tower. Make sure the power connector is detached from
the switchboard. Start removing the power connector connected to motherboard including CPU fan power connector, cabinet fan,
the front panel of cabinet power buttons and all the remaining drives if not detached yet.
Now remove the screws of SMPS from the back of the cabinet and the SMPS can be detached from the tower cabinet.
Step 7: Remove the Motherboard

Before removing all the connectors from the motherboard, make sure you memorize the connectors for assembling the computer
if required, as that may require connecting the connectors at its place. Remove the screws from the back of the motherboard and
you will be able to detach it from the cabinet. Now remove the CPU fan from the motherboard. The heat sink will be visible now
which can be removed by the pulling the tab upward. Finally, the processor is visible now, which can be removed by the plastic
tab which can be pulled back one stretching it side way.

How to Assemble a Computer
The assembling of the computer system is exactly the opposite of disassembling operation. Before starting assembling the
computer system, make sure you have the screws and a screwdriver for those.
Step 1: Mount the Processor

The first step for assembling the computer system starts with mounting the processor on the processor socket of the motherboard.
To mount the process, you don't need to apply any force. The special ZIF (zero insertion force) sockets are usually used to prevent
any damage to the processor pins. Once the processor is mounted, the heat sink will be attached on top of the processor. The CPU
fan is also attached on top of the heat sink.
Step 2: Fix the Motherboard in the Tower Case

Now the motherboard is to be fixed vertically in the tower case and the screws are fixed from behind of the motherboard.
Step 3: Connect the Power Supply

Now line up the power supply at the top back end of the cabinet and screw it. The power connectors for motherboard power
supply and CPU fan power supply are to be connected. If the cabinet cooling FAN is required then it is to be screwed at the back
end grill of the cabinet and its power connector is to be connected from SMPS.
Step 4: Install the Drives

Install the CD/DVD drives at the top front end of the cabinet and screw it. Install the Hard disk drive and floppy disk drive below
CD/DVD drive and screw it. Make sure once screwed there is no vibration in either of the CD/DVD, hard disk or floppy disk
drives.
Step 5: Connect Cables

Now select the appropriate data cable and connect one end of the cable to its drive socket and another end at its appropriate
connector on the motherboard. For SATA hard disk drive or CD/DVD drives use SATA cable and its power cable, else use IDE
data cable. Do the proper jumper settings as per the usage requirement.
Step 6: Mount the Memory Modules

It is time now to mount the memory modules on the motherboard by aligning the RAM to its socket on the motherboard and press
it downward. Make sure the side tab are fixed into the RAM notch. If not, you may still have to press a bit.
Step 7: Install the Internal Cards

Install the internal cards to its socket and attach the cables or power cable to it. The selection of right socket or slot is required as
per the type of socket.
Step 8: Cover the Tower

Cover the tower by placing it and pressing towards front side and screw it.
Step 9: Connect the External Devices and Power

Connect the external devices with CPU at its appropriate socket. It includes mouse and keyboard at PS2 or USB connectors.
Monitor at the video output socket. Connect the power cable to the back of tower in SMPS. Plug in the power cable to the electric
board.
FREQUESTLY ASK QUESTIONS.
Question: What factors should be considered before disassembly and reassembly of a computer?
Answer: The following factors are to be considered before disassembly and reassembly.
1) Shut down the computer system before the commencement of the process. It is hazardous to perform any such activity with the
computer system power on and connected with the power supply. Detach the power cable .
2) Remove all the interfaces of the devices connected with the cabinet(computer system).
3) Perform the task at the dry, non humid area to prevent environmental problem.
4) If you are inexperienced, take a picture of the inside assembly of the cabinet, so that you can attach the right thing at the right
place at the time of reassembly.
5) Keep all the screw properly and fix all of them at the appropriate place
Question: What is a computer?
Answer: A computer is a piece of electronic equipment that generates the outcome based on the logic, as per the input is given by
the user.

Question: What brand of computer did you assemble and disassemble?
Answer: All the brands with desktop system are mostly similar for assembling and disassembling. You just detach the external
peripherals like monitor, keyboard, mouse, speaker etc. and detach the power cable. Unscrew the cabinet and the disassembling of
the computer begins like this.
WHAT’S MORE
DIRECTION: ANSWER THE FOLLOWING QUESTION FOR DISCUSSION.
1. Do you agree that knowing all the variations of components in the system unit will also help you understand the process of
disassembly and assembly?
2. What could go wrong if any of the step on the said process got overlooked?
WHAT I CAN DO
DIRECTION: Perform Computer System Disassembly and Assembly by following the given steps. Use the rubric below for
your guide.
Manufacturer:
Able to Perform Task Independently

Model:
Able to Perform Task with Little

Able to Perform Task with Help
Hard drive capacity/ space:
External location of hard drive:
Unable to Perform Task
Help
Comments
Assessment Criteria 0 80 90 100

Opening a PC
1. Make sure workspace is clean
2. Make sure the PC is turned off
3. Verify that the PC has been unplugged from the
power source
4. Note the type of PC being worked on
5. Remove the power cord from the monitor, the nun
plug and unscrew the monitor cable from the back of
the PC and set the monitor aside
6. Locate screws on the back of side of the case

7. Remove the screws and place in a container for
safe keeping.
8. Carefully remove the case watching out forinternal
wires and cables
Disassembling a PC
1. Note and record each part, drive, cable, and
connection
2. Avoid forcing the removal of parts (if they don’t
come out easily, STOP and assess why)
3. Remove drives with their connecting cables(makes
the job easier by allowing more room for work)
4. Place removed parts in separate space in the work
area
5. Remove expansion cards, noting the bays in which
they were originally located
6. DO NOT TOUCH the pin connectors on the cards with
your
4|C O M Pbare
U T E Rhands
SYSTEM S E RVI C I N G 3 ICT GRADE 1 2
ASSESSMENT
DIRECTION: Read and analyze each question and select the letter of the best answer. Write your answer on the space
provided before each number
________1. What is the first step in SYSTEM UNIT DISASSEMBLING?
a. Unplugging c. Removing the system fan
b. Opening the outer shell d. Removing the CPU fan
________2. This component is the source of electricity in the computer system.
a. CPU c. Hard Disk
Drive
b. Motherboard d. Power supply
________3. This is the main and largest storage in the computer.
a. CPU c. Hard Disk
Drive
b. Motherboard d. Power supply
________4. It is the main circuit board of the computer.
a. Power supply c. Motherboard
b. Hard disk drive d. CPU
________5. Which is NOT part of computer disassembly?
a. Detach the power supply c. Prepare the motherboard
b. Prepare the motherboard d. Unplug all the cables and wires
WHAT I CAN SHOW
Which category in 21st Century skills do you think the core of our topic falls in? (Communication, collaboration, creativity,
critical thinking, productivity, leadership and technology literacy). Explain why.

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COMPUTER SYSTEM SERVICING 3

NAME: GRADE AND STRAND:

WHAT I NEED TO KNOW

By the end of the lesson, you are expected to;

DIRECTION: Answer the following questions accordingly.

1|COMPUTER SYSTEM S E RVI C I N G 3 ICT GRADE 1 2

Follow these seven steps carefully.

Step 1: Detach the Power Cable

Step 2: Remove the Cover

Step 3: Remove the Adapter Cards

Step 4: Remove the Drives

Step 5: Remove the Memory Module

Step 6: Remove the Power Supply

Step 7: Remove the Motherboard

2|COMPUTER SYSTEM S E RVI C I N G 3 ICT GRADE 1 2

Step 1: Mount the Processor

Step 2: Fix the Motherboard in the Tower Case

Step 3: Connect the Power Supply

Step 4: Install the Drives

Step 5: Connect Cables

Step 6: Mount the Memory Modules

Step 7: Install the Internal Cards

Step 8: Cover the Tower

Step 9: Connect the External Devices and Power

FREQUESTLY ASK QUESTIONS.

Question: What is a computer?

3|COMPUTER SYSTEM S E RVI C I N G 3 ICT GRADE 1 2

DIRECTION: ANSWER THE FOLLOWING QUESTION FOR DISCUSSION.

Able to Perform Task Independently

Able to Perform Task with Little

Unable to Perform Task

Assessment Criteria 0 80 90 100

6. Locate screws on the back of side of the case

4|COMPUTER SYSTEM S E RVI C I N G 3 ICT GRADE 1 2

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