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
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
15.
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
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
