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
4
and
5.
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
(14.1-in.
LCD
models)”
on
page
72).
4.
Remove
the
backup
battery
(see
“Checking
the
battery
pack”
on
page
43).
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
44
MT
2668/2669/2678/2679/2686/2687
Summary of Contents for 18714AU
Page 6: ...vi MT 2668 2669 2678 2679 2686 2687 ...
Page 8: ...2 MT 2668 2669 2678 2679 2686 2687 ...
Page 155: ...5 4 Removing and replacing a FRU ThinkPad T43 T43p Series 149 ...
Page 157: ...3 2 Removing and replacing a FRU ThinkPad T43 T43p Series 151 ...
Page 172: ...b 4 4 c 5 5 continued Removing and replacing a FRU 166 MT 2668 2669 2678 2679 2686 2687 ...
Page 187: ...1 2 3 4 5 6 7 8 9 16 10 12 13 14 15 19 17 18 11 Locations ThinkPad T43 T43p Series 181 ...
Page 221: ...14 1 in LCD FRUs 1 b a 2 c d e 3 6 7 8 5 4 Parts list ThinkPad T43 T43p Series 215 ...
Page 228: ...15 0 in LCD FRUs 1 2 5 3 6 7 8 4 Parts list 222 MT 2668 2669 2678 2679 2686 2687 ...