Lenovo J105 Hardware Maintenance Manual - Page 101

Attention

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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. 12. To install the microprocessor on the new system board, position the microprocessor so that the notches 1 are aligned with the corresponding tabs in the socket. 13. Make sure that the microprocessor retainer is fully open. 14. Using the vacuum pen 1 to pick up the microprocessor, lower the microprocessor straight down into the socket. 15. Lower the microprocessor retainer. 16. Lock the retainer with the small handle to secure the microprocessor in the socket. 17. The new retention bracket has plastic one-way rings on the posts that insert into the rear of the new system board. Install the new retention bracket by aligning the posts on the module with the holes in the system board and pushing the posts through the holes until the retention bracket is secure. 18. Install the heat sink and fan assembly on the new system board. 19. Install the new system board into the chassis and align the screw holes with those in the chassis. Insert and tighten the screws that secure the system board. Chapter 8. Replacing FRUs (Types 8252, 8253, 8254, 8255, 8256, 8257, 8258, and 8259) 95

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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.
12.
To
install
the
microprocessor
on
the
new
system
board,
position
the
microprocessor
so
that
the
notches
±1²
are
aligned
with
the
corresponding
tabs
in
the
socket.
13.
Make
sure
that
the
microprocessor
retainer
is
fully
open.
14.
Using
the
vacuum
pen
±1²
to
pick
up
the
microprocessor,
lower
the
microprocessor
straight
down
into
the
socket.
15.
Lower
the
microprocessor
retainer.
16.
Lock
the
retainer
with
the
small
handle
to
secure
the
microprocessor
in
the
socket.
17.
The
new
retention
bracket
has
plastic
one-way
rings
on
the
posts
that
insert
into
the
rear
of
the
new
system
board.
Install
the
new
retention
bracket
by
aligning
the
posts
on
the
module
with
the
holes
in
the
system
board
and
pushing
the
posts
through
the
holes
until
the
retention
bracket
is
secure.
18.
Install
the
heat
sink
and
fan
assembly
on
the
new
system
board.
19.
Install
the
new
system
board
into
the
chassis
and
align
the
screw
holes
with
those
in
the
chassis.
Insert
and
tighten
the
screws
that
secure
the
system
board.
Chapter
8.
Replacing
FRUs
(Types
8252,
8253,
8254,
8255,
8256,
8257,
8258,
and
8259)
95