Lenovo J105 Hardware Maintenance Manual - Page 129

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Replacing the CMOS battery If the CMOS battery fails, the date, time, and configuration information (including passwords) are lost. An error message is displayed when you turn on the computer. Important Refer to "Safety notices (multi-lingual translations)" on page 7 for information about replacing and disposing of the battery. 1. Remove the cover. See "Removing the cover" on page 114. 2. Locate the battery. See "Identifying parts on the system board" on page 116. 3. Depending on the location of the CMOS battery in your computer, you might have to remove the drive bay assembly to access the battery. If necessary, see "Removing and replacing the drive bay assembly" on page 119. 4. If necessary, remove any adapters that impede access to the battery. See "Replacing a PCI adapter" on page 121 for more information. 5. Remove the old battery. 6. Install the new battery. 7. Replace the drive bay assembly if it was removed. See "Removing and replacing the drive bay assembly" on page 119. 8. Replace any adapters that were removed to gain access to the battery. See "Replacing a PCI adapter" on page 121 for more information. Note: When the computer is turned on for the first time after battery replacement, an error message might be displayed. This is normal after replacing the battery. 9. Go to "Completing the FRU replacement." on page 143. Chapter 9. Replacing FRUs (Types 8453, 8454, 8455, 8456, 8457, 8458, 8459, and 8460) 123

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Replacing
the
CMOS
battery
If
the
CMOS
battery
fails,
the
date,
time,
and
configuration
information
(including
passwords)
are
lost.
An
error
message
is
displayed
when
you
turn
on
the
computer.
Important
Refer
to
“Safety
notices
(multi-lingual
translations)”
on
page
7
for
information
about
replacing
and
disposing
of
the
battery.
1.
Remove
the
cover.
See
“Removing
the
cover”
on
page
114.
2.
Locate
the
battery.
See
“Identifying
parts
on
the
system
board”
on
page
116.
3.
Depending
on
the
location
of
the
CMOS
battery
in
your
computer,
you
might
have
to
remove
the
drive
bay
assembly
to
access
the
battery.
If
necessary,
see
“Removing
and
replacing
the
drive
bay
assembly”
on
page
119.
4.
If
necessary,
remove
any
adapters
that
impede
access
to
the
battery.
See
“Replacing
a
PCI
adapter”
on
page
121
for
more
information.
5.
Remove
the
old
battery.
6.
Install
the
new
battery.
7.
Replace
the
drive
bay
assembly
if
it
was
removed.
See
“Removing
and
replacing
the
drive
bay
assembly”
on
page
119.
8.
Replace
any
adapters
that
were
removed
to
gain
access
to
the
battery.
See
“Replacing
a
PCI
adapter”
on
page
121
for
more
information.
Note:
When
the
computer
is
turned
on
for
the
first
time
after
battery
replacement,
an
error
message
might
be
displayed.
This
is
normal
after
replacing
the
battery.
9.
Go
to
“Completing
the
FRU
replacement.”
on
page
143.
Chapter
9.
Replacing
FRUs
(Types
8453,
8454,
8455,
8456,
8457,
8458,
8459,
and
8460)
123