Lenovo J105 Hardware Maintenance Manual - Page 107

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8. Make sure that the microprocessor retainer is fully open. 9. Loosen the protective cover 3 that protects the gold contacts on the new microprocessor 2 but do not remove it. Use the vacuum pen 1 to pick up the microprocessor then completely remove the cover. 10. Position the microprocessor so that the notches on the microprocessor are aligned with the tabs in the microprocessor socket. 11. Using the vacuum pen, lower the microprocessor straight down into the microprocessor socket. Note: Install the black protective cover that was removed from the new microprocessor onto the defective microprocessor after the installation is complete. 12. Lower the microprocessor retainer. 13. Lock the retainer with the small handle to secure the microprocessor in the socket. 14. 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) 101

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8.
Make
sure
that
the
microprocessor
retainer
is
fully
open.
9.
Loosen
the
protective
cover
±3²
that
protects
the
gold
contacts
on
the
new
microprocessor
±2²
but
do
not
remove
it.
Use
the
vacuum
pen
±1²
to
pick
up
the
microprocessor
then
completely
remove
the
cover.
10.
Position
the
microprocessor
so
that
the
notches
on
the
microprocessor
are
aligned
with
the
tabs
in
the
microprocessor
socket.
11.
Using
the
vacuum
pen,
lower
the
microprocessor
straight
down
into
the
microprocessor
socket.
Note:
Install
the
black
protective
cover
that
was
removed
from
the
new
microprocessor
onto
the
defective
microprocessor
after
the
installation
is
complete.
12.
Lower
the
microprocessor
retainer.
13.
Lock
the
retainer
with
the
small
handle
to
secure
the
microprocessor
in
the
socket.
14.
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)
101