Lenovo J105 Hardware Maintenance Manual - Page 111

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7. Using the vacuum pen 1 , remove the microprocessor 2 from the system board socket by lifting it straight up and out of the socket. Important Do not touch the gold contacts on the bottom of the microprocessor. If you must touch the microprocessor, touch only the sides. Attention: Be careful to not drop anything onto the microprocessor socket while it is exposed. The socket pins must be kept as clean as possible. 8. Position the new microprocessor so that the small triangle on the microprocessor is aligned with the corresponding triangle 1 on the microprocessor socket. 9. Using the vacuum pen, lower the microprocessor straight down into the microprocessor socket. 10. Lower the small handle to secure the microprocessor in the socket. 11. Use the thermal grease syringe to place five drops of grease on the top of the microprocessor. Each drop of grease should be 0.03ml (3 tick marks on the grease syringe). Chapter 8. Replacing FRUs (Types 8252, 8253, 8254, 8255, 8256, 8257, 8258, and 8259) 105

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7.
Using
the
vacuum
pen
±1²
,
remove
the
microprocessor
±2²
from
the
system
board
socket
by
lifting
it
straight
up
and
out
of
the
socket.
Important
Do
not
touch
the
gold
contacts
on
the
bottom
of
the
microprocessor.
If
you
must
touch
the
microprocessor,
touch
only
the
sides.
Attention:
Be
careful
to
not
drop
anything
onto
the
microprocessor
socket
while
it
is
exposed.
The
socket
pins
must
be
kept
as
clean
as
possible.
8.
Position
the
new
microprocessor
so
that
the
small
triangle
on
the
microprocessor
is
aligned
with
the
corresponding
triangle
±1²
on
the
microprocessor
socket.
9.
Using
the
vacuum
pen,
lower
the
microprocessor
straight
down
into
the
microprocessor
socket.
10.
Lower
the
small
handle
to
secure
the
microprocessor
in
the
socket.
11.
Use
the
thermal
grease
syringe
to
place
five
drops
of
grease
on
the
top
of
the
microprocessor.
Each
drop
of
grease
should
be
0.03ml
(3
tick
marks
on
the
grease
syringe).
Chapter
8.
Replacing
FRUs
(Types
8252,
8253,
8254,
8255,
8256,
8257,
8258,
and
8259)
105