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Checking the backup battery, Checking, Backup – Lenovo Z61e User Manual

Page 38: Battery

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2(-)

3

4

7(+) 6(+)

5

1(-)

Terminal

Voltage

(V

dc)

1,

2

Ground

(−)

6,

7

+

0

to

+

12.6

3.

If

the

voltage

is

less

than

+11.0

V

dc,

the

battery

pack

has

been

discharged.

Note:

Recharging

will

take

at

least

3

hours,

even

if

the

indicator

does

not

turn

on.

If

the

voltage

is

still

less

than

+11.0

V

dc

after

recharging,

replace

the

battery.

4.

If

the

voltage

is

more

than

+11.0

V

dc,

measure

the

resistance

between

battery

terminals

3

and

2.

The

resistance

must

be

4

to

30

K

.

If

the

resistance

is

not

correct,

replace

the

battery

pack.

If

the

resistance

is

correct,

replace

the

system

board.

Checking

the

backup

battery

Do

the

following:

1.

Power

off

the

computer,

and

unplug

the

ac

adapter

from

it.

2.

Turn

the

computer

upside

down.

3.

Remove

the

battery

pack

(see

“1010

Battery

pack”

on

page

58).

4.

Remove

the

backup

battery

(see

“1140

Backup

battery”

on

page

78).

5.

Measure

the

voltage

of

the

backup

battery.

See

the

following

figure.

Red (+)

Black (-)

Wire

Voltage

(V

dc)

Red

+2.5

to

+3.2

Black

Ground

v

If

the

voltage

is

correct,

replace

the

system

board.

v

If

the

voltage

is

not

correct,

replace

the

backup

battery.

v

If

the

backup

battery

discharges

quickly

after

replacement,

replace

the

system

board.

Checkout

guide

32

MT

0660,

0672,

0673,

0674,

0675,

9450,

9451,

9452,

and

9453

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