Lenovo ThinkCentre M50 Hardware Maintenance Manual (HMM) - Page 62

Replacing, battery, machine, types

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3. Connect the power connector to the drive. 4. Go to "Replacing the cover and connecting the cables" on page 63. Replacing the battery (all machine types) The computer has a special type of memory that maintains the date, time, and settings for built-in features, such as parallel-port assignments (configuration). A battery keeps this information active when you turn off the computer. If the battery fails, the date, time, and configuration information (including passwords) are lost. An error message is displayed when you turn on the computer. Refer to "Safety notices (multi-lingual translations)" on page 251 for information about replacing and disposing of the battery. To change the battery: 1. Turn off the computer and all attached devices. 2. Remove the cover. See "Removing the cover" on page 30. 3. Locate the battery. See "Identifying parts on the system board (all machine types)" on page 38. 4. If necessary, remove any adapters that impede access to the battery. See "Replacing adapters" on page 39 for more information. 5. Remove the old battery. 6. Install the new battery. 7. Replace any adapters that were removed to gain access to the battery. See "Replacing adapters" on page 39 for instructions for replacing adapters. 8. Replace the cover, and plug in the power cord. See "Replacing the cover and connecting the cables" on page 63. 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. Turn on the computer and all attached devices. 10. Use the IBM Setup Utility program to set the date and time and any passwords. See Chapter 5, "IBM Setup Utility program," on page 19. 56 Hardware Maintenance Manual

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3.
Connect
the
power
connector
to
the
drive.
4.
Go
to
“Replacing
the
cover
and
connecting
the
cables”
on
page
63.
Replacing
the
battery
(all
machine
types)
The
computer
has
a
special
type
of
memory
that
maintains
the
date,
time,
and
settings
for
built-in
features,
such
as
parallel-port
assignments
(configuration).
A
battery
keeps
this
information
active
when
you
turn
off
the
computer.
If
the
battery
fails,
the
date,
time,
and
configuration
information
(including
passwords)
are
lost.
An
error
message
is
displayed
when
you
turn
on
the
computer.
Refer
to
“Safety
notices
(multi-lingual
translations)”
on
page
251
for
information
about
replacing
and
disposing
of
the
battery.
To
change
the
battery:
1.
Turn
off
the
computer
and
all
attached
devices.
2.
Remove
the
cover.
See
“Removing
the
cover”
on
page
30.
3.
Locate
the
battery.
See
“Identifying
parts
on
the
system
board
(all
machine
types)”
on
page
38.
4.
If
necessary,
remove
any
adapters
that
impede
access
to
the
battery.
See
“Replacing
adapters”
on
page
39
for
more
information.
5.
Remove
the
old
battery.
6.
Install
the
new
battery.
7.
Replace
any
adapters
that
were
removed
to
gain
access
to
the
battery.
See
“Replacing
adapters”
on
page
39
for
instructions
for
replacing
adapters.
8.
Replace
the
cover,
and
plug
in
the
power
cord.
See
“Replacing
the
cover
and
connecting
the
cables”
on
page
63.
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.
Turn
on
the
computer
and
all
attached
devices.
10.
Use
the
IBM
Setup
Utility
program
to
set
the
date
and
time
and
any
passwords.
See
Chapter
5,
“IBM
Setup
Utility
program,”
on
page
19.
56
Hardware
Maintenance
Manual