The document discusses the CPU (central processing unit), which is the brain of the computer that carries out instructions. It describes the parts of the CPU including the socket and cooling assembly. The summary provides step-by-step instructions for removing an old CPU, installing a new CPU, applying thermal compound, and securing the cooling assembly.

1. By: Mudit K. J., Harpreet, Perry, Karan

2.  CPU stands for Central Processing Unit
Central Processing Unit is like the brain of
the Computer

3.  The CPU is one of the main portions of the
computer, that carries out instructions to the
computer program
 CPU performs arithmetical, logical and
input/output operations
 The designs of the CPU may have changed, but
they all perform the same operations
 The First CPU was made in the 1940s and was ran
with the first computer the EDVAC (Electronic
Discrete Variable Automatic Computer).
 The EDVAC was one of the first functional
Electronic Computers

4.  The CPU will have
LGA – Land Grid Array
- Used to connect to Sockets
- The sockets will have a model number
that is used for that certain processor
775 socket is used in the Pentium 4 processor

5.  PGA– Pin Grid Array
- Was used in previous models of the
processor

7. Pin Grid Array
This is a Old CPU
Model I486 DX2

8. Pentium 4 Processor
This is the CPU model
we will be showing

9. Land Grid Array

11.  Unplug all electrical connections
 This includes the electrical power to the
motherboard processor and the fan cable
 Put in the Anti-Static Wrist Strap to a non-
painted area/metal

12.  There are four fasteners connected from the
cooling assembly to the motherboard
 Gently rotate 90 degrees to the direction
indicated on top of the fastener
 Never do a counter-clockwise rotation
 When a fastener is released, alignment line
on top will be parallel to the cooling
assembly
 You will need to use a flat-tip screwdriver to
rotate the fastener caps
 Do not let the screwdriver tip slip off the
fasteners

13.  Pull the fasteners gently upward, but you
should here a snap from each fastener on the
motherboard
 Place the plastic protection covers over the
bottom of the cooling assembly to protect
the fastener tips
 Disengage locking lever tab while holding the
load plate in position
 Slowly release load plate while you move the
load lever into full open position

14.  Remove Processor using a straight up vertical
direction
 Do not tilt or slide the processor
 Close the processor load plate, lock the lever
and replace socket protective cover
 Excess Thermal material can be removed
with a soft lint-free cloth

16.  Core Processor
 Heat Sink Fan Assembly
 Compressed Air to remove debris or Foreign
objects
Anti – Static Wrist Strap

17.  Lookat the pictures
 What Do you see
 There is a lever to open the CPU, and
Protective cover
 Levers are only in the new
motherboards

18.  UseCompressed Air to remove Debris or
foreign objects
 Never use your finger, cloth or brush to
remove debris
 This damages the pins

19.  Remove the processor from its protective
cover
 Handle the processor by the edges
 Never touch the bottom of the processor
 Carefully remove processor from its
protective cover
 Inspect it for damage

20. There is one way for a processor to be inserted
back into its socket
A processor has many pins, but there is only
ONE pin
This pin is known as Pin #1, this is where you
put the processor in its place

21.  Placethe processor over the socket
keys, look for a socket that is different to
other sockets
 DoNOT drag the processor across or place it
the wrong way
 This Pin must correspond to the socket

22.  After inserting the processor
 Lower it to the load lever and secure it under
the locking tab
 Should look like this

23.  Installthe Cooling Assembly which has a heat
sink and fan
 Remove the protective plastic cover from the
bottom of assembly
 Do not touch the bottom of the assembly or
the thermal compound

24. Thermal Compound Material

25.  Before installing the cooling assembly that
has a heat sink and fan
 Apply the thermal compound material on the
processor
 Put enough compound material so that it is
evenly distributed
 Use a material like a old card, etc to evenly
distribute it

26.  Position the fan over the processor
 The motherboard should have four holes
around the processor
 The holes are for the cooling assembly to be
placed
 The cooling assembly will have 4 fasteners
 Use a pencil’s end (eraser) to push down the
fastener
 Connect a fan electrical cable to the
motherboard fan connection

29.  http://www.youtube.com/watch?v=Y2gi0GTz
fTA

30.  Visit
computerpartcpu.wikispaces.com
Website has more Tutorials on removal and
installation of CPUs on other versions of the
computer hardware models

31. Computer Manuals Pgs 205 to 218
Tutorial videos mostly from Youtube