Lenovo ThinkPad T40 Hardware Maintenance Manual - Page 60

combinations

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Product overview FRU Memory Fan TrackPoint or pointing device Applicable test 1. If two DIMMs are installed, remove one of them and run Diagnostics --> Memory Test-Quick. 2. If the problem does not recur, return the DIMM to its place, remove the other one, and run the test again. 3. If the test does not detect the error, run Diagnostics --> Memory Test-Full. 1. Turn on the computer and check the air turbulence at the louver near the PC Card slot. 2. Run Diagnostics --> Other Devices --> Fan. If the TrackPoint does not work, check the configuration as specified in the ThinkPad Configuration program. If the TrackPoint is disabled, select Automatic to enable it. After you use the TrackPoint, the pointer may drift on the screen for a short time. This drift can occur when a slight, steady pressure is applied to the TrackPoint pointer. This symptom is not a hardware problem. If the pointer stops after a short time, no service action is necessary. Touch Pad If enabling the TrackPoint does not correct the problem, continue with the following: v Interactive Tests --> Mouse If the Touch Pad does not work, check the configuration as specified in the ThinkPad Configuration program. If the Touch Pad is disabled, select Automatic to enable it. If enabling the Touch Pad does not correct the problem, continue with the following: v Interactive Tests --> Mouse Fn key combinations The following table shows the function of each combination of Fn with a function key. Key combination Fn+F1 Fn+F2 Fn+F3 Description Reserved. Reserved. Turn off the computer display, leaving the screen blank. To turn the computer display on again, press any key or press the TrackPoint pointing stick. (continued) 54 T40/T40p, T41/T41p, T42/T42p

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FRU
Applicable
test
Memory
1.
If
two
DIMMs
are
installed,
remove
one
of
them
and
run
Diagnostics
-->
Memory
Test—Quick
.
2.
If
the
problem
does
not
recur,
return
the
DIMM
to
its
place,
remove
the
other
one,
and
run
the
test
again.
3.
If
the
test
does
not
detect
the
error,
run
Diagnostics
-->
Memory
Test—Full
.
Fan
1.
Turn
on
the
computer
and
check
the
air
turbulence
at
the
louver
near
the
PC
Card
slot.
2.
Run
Diagnostics
-->
Other
Devices
-->
Fan
.
TrackPoint
or
pointing
device
If
the
TrackPoint
does
not
work,
check
the
configuration
as
specified
in
the
ThinkPad
Configuration
program.
If
the
TrackPoint
is
disabled,
select
Automatic
to
enable
it.
After
you
use
the
TrackPoint,
the
pointer
may
drift
on
the
screen
for
a
short
time.
This
drift
can
occur
when
a
slight,
steady
pressure
is
applied
to
the
TrackPoint
pointer.
This
symptom
is
not
a
hardware
problem.
If
the
pointer
stops
after
a
short
time,
no
service
action
is
necessary.
If
enabling
the
TrackPoint
does
not
correct
the
problem,
continue
with
the
following:
v
Interactive
Tests
-->
Mouse
Touch
Pad
If
the
Touch
Pad
does
not
work,
check
the
configuration
as
specified
in
the
ThinkPad
Configuration
program.
If
the
Touch
Pad
is
disabled,
select
Automatic
to
enable
it.
If
enabling
the
Touch
Pad
does
not
correct
the
problem,
continue
with
the
following:
v
Interactive
Tests
-->
Mouse
Fn
key
combinations
The
following
table
shows
the
function
of
each
combination
of
Fn
with
a
function
key.
Key
combination
Description
Fn+F1
Reserved.
Fn+F2
Reserved.
Fn+F3
Turn
off
the
computer
display,
leaving
the
screen
blank.
To
turn
the
computer
display
on
again,
press
any
key
or
press
the
TrackPoint
pointing
stick.
(continued)
Product
overview
54
T40/T40p,
T41/T41p,
T42/T42p