IBM Thinkpad T40 Manual

							Status indicators
The system status indicators show the status of the
computer, as follows:
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Product overview
ThinkPad T40 Series47 
						

							Indicator Meaning

1Ultrabay
Slim statusGreen:
An Ultrabay Slim device is installed and in
use.
Blinking green:
An Ultrabay Slim device is in the process of
being detached.
Turn off:
An Ultrabay Slim device is ready to be
attached or detached.
Note:If you are using Windows 2000, the
Ultrabay Slim status indicator does not blink
while an Ultrabay Slim device is being
detached. Instead, a message box pops up
when the process is completed; then the
indicator turns off.

2Standby
status
Green:
The computer is in standby mode.
Blinking green:
The computer is entering standby mode or
hibernation mode, or is resuming normal
operation.

3Battery
status
Green:
The battery is in use and has enough
power. The ac adapter has charged the
battery completely.
Blinking green:
The battery is being charged, but still has
enough power to operate. (At regular
intervals, the indicator light turns off briefly.)
Orange:
The battery is being charged, but the battery
power is still low.
Blinking orange:
The battery needs to be charged. When the
indicator starts blinking orange, the
computer beeps three times.

4Power on
Green:
The computer is on and ready to use. This
indicator stays lit whenever the computer is
on and is not in standby mode.

5Drive in
use
Green:
Data is being read from or written to the
hard-disk drive, the diskette drive, or the
drive in the Ultrabay Slim device. When this
indicator is on, do not put the computer into
standby mode or turn off the computer.
Note:Do not move the system while the green
drive-in-use light is on. Sudden physical shock
could cause drive errors.
(continued)
Product overview
48ThinkPad T40 Series (MT 2373, 2374, 2375, 2376) 
						

							Indicator Meaning

6Caps lock
Green:
Caps Lock mode is enabled. To enable or
disable Caps Lock mode, press the Caps
Lock key.

7Num lock
Green:
The numeric keypad on the keyboard is
enabled. To enable or disable the keypad,
press and hold the Shift key, and press the
NumLk (ScrLk) key.

8Bluetooth
status
Green:
Bluetooth is operational. This indicator is on
when the Bluetooth is on and not in
suspend mode.

9Wireless
status
Green:
The wireless feature (the IEEE 802.11
standard) is on, and the radio link is ready
for use.
Blinking green:
Data is being transmitted.
FRU tests
The following table shows the test for each FRU.
FRU Applicable test
System board 1.Diagnostics-->CPU/Coprocessor
2.Diagnostics-->Systemboard
PowerDiagnostics-->Other Devices-->IBM AC
Adapter,IBM Battery 1 (IBM Battery 2)
LCD unit 1.Diagnostics-->Video Adapter
2.Interactive Tests-->Video
Modem
daughter card
(MDC or
BMDC)1. Make sure the modem is set up correctly.
2. Replace the modem jack and the modem
card in turn, and run the following tests in
Diagnostics-->Communication:
a. Lucent Soft Modem Loopback
b. Lucent Soft Modem Dialtone
Audio 1.Interactive Tests-->Internal Speaker
2.Diagnostics-->Other Devices-->Analog
Devices AC97 CODEC Test
SpeakerInteractive Tests-->Internal Speaker
PC Card slotsDiagnostics-->Systemboard-->PCMCIA,
PCMCIA External Loop
Keyboard 1.Diagnostics-->Systemboard-->
Keyboard
2.Interactive Tests-->Keyboard
Hard-disk driveDiagnostics-->Fixed Disks
(continued)
Product overview
ThinkPad T40 Series49 
						

							FRU Applicable test
Diskette drive 1.Diagnostics-->Diskette Drives
2.Interactive Tests-->Diskette
DVD drive or
DVD/CD-RW
combo drive1.Diagnostics-->Other Devices-->
CD-ROM/DVD
2.Interactive Tests-->CD-ROM/DVD Test
Memory 1. If two DIMMs are installed, remove one of
them and runDiagnostics-->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. RunDiagnostics-->Other Devices-->
IBM Fan.
TrackPoint or
pointing deviceIf the TrackPoint does not work, check the
configuration in the ThinkPad Configuration
program. If the TrackPoint is disabled, select
Automaticto 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:
vInteractive Tests-->Mouse
Touch Pad If the Touch Pad does not work, check the
configuration in the ThinkPad Configuration
program. If the Touch Pad is disabled, select
Automaticto enable it. If enabling the Touch
Pad does not correct the problem, continue
with the following:
vInteractive Tests-->Mouse Product overview
50ThinkPad T40 Series (MT 2373, 2374, 2375, 2376) 
						

							Fn key combinations
The following table shows the function of each combination
of Fn with a function key.
Key
combinationDescription
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.
Fn+F4 Put the computer in standby mode. To return to
normal operation, press the Fn key only,
without pressing a function key.
Notes:
1. This mode is called suspend mode in
Windows NT.
2. In Windows 2000 and Windows XP, this
combination of keys functions as a sleep
button. The setting can be changed so that
pressing it puts the computer into
hibernation mode or even shuts the
computer down.
Fn+F5 Enable or disable the built-in wireless
networking features ( the IEEE 802.11
standard) and the Bluetooth features. If you
press Fn+F5, a list of wireless features is
displayed in the Wireless Radio Control
window. The power state of each feature can
be quickly changed in the list.
Note:This function is supported only in
Windows 98, Windows 2000, and Windows XP.
Fn+F6 Reserved.
Fn+F7Switching a display output location
Note:For any operating system other than
Windows 2000 or Windows XP, no additional
procedure is needed. Just press Fn+F7.Switch
between the computer display and an external
monitor. If an external monitor is attached,
computer output is displayed in the following
three patterns by turns:
vExternal monitor (CRT display)
vComputer display and external monitor (LCD
+ CRT display)
vComputer display (LCD)
Notes:
1. This function is not supported if different
desktop images are displayed on the
computer display and the external monitor
(the Extend desktop function).
2. This function does not work while a DVD
movie or a video clip is playing.
(continued)
Product overview
ThinkPad T40 Series51 
						

							Key
combinationDescription
Fn+F7 To enable this function in Windows 2000 and
Windows XP, the following procedure is
needed:
vWhen you log on to Windows 2000 and
Windows XP for the first time, press Fn+F7
and select a display-switching function in the
Initial setup window. In Windows 2000 and
Windows XP, multiple users can log on to a
single operating system by using different
user IDs. To enable this function, each user
needs to select the function in the initial
setup window when logging on for the first
time.
vIf the Fn+F7 key combination have been
assigned to a presentation scheme function,
start Presentation Director, and change the
settings.
Applying a presentation scheme
Note:This function is supported only in
Windows 2000 or Windows XP.Apply a
presentation scheme directly, with no need to
start Presentation Director. To enable this
function, do as follows when you log on to
Windows 2000 or Windows XP for the first
time:
Note:In Windows 2000 and Windows XP,
multiple users can log on to a single operating
system by using different user IDs. To enable
this function, each user needs to do the
following procedures when logging on for the
first time.
1. Start Windows 2000 or Windows XP, and
log on to the system.
2. Press Fn+F7. The setting window opens.
3. Select the optional setting.
To disable this function and use the Fn+F7 key
combination for switching a display output
location, start Presentation director, and
change the settings.
Fn+F8 Switch the computer screen size between
expanded mode and normal mode if the
computer display image is smaller than the
physical display.
Note:This function is not supported in
Windows 2000 and Windows XP.
(continued)
Product overview
52ThinkPad T40 Series (MT 2373, 2374, 2375, 2376) 
						

							Key
combinationDescription
Fn+F9 Open the IBM ThinkPad EasyEject Utility
screen. buttons for the following choices are
displayed.
vEject ThinkPad PC from Dock: This button
is displayed only if the ThinkPad computer
have been attached to a ThinkPad Mini
Dock. The computer can be detached from
the ThinkPad Mini Dock.
vEject ThinkPad PC from Mini Dock: This
button is displayed only if the ThinkPad
computer to a ThinkPad Mini Dock and
connected one or more USB devices to the
ThinkPad Mini Dock. All the USB devices
can be stopped and removed by using this.
vRun EasyEject Actions: External devices
connected to the ThinkPad computer can be
selected, stopped, and removed.
vConfigure EasyEject Actions: The IBM
ThinkPad EasyEject Utility main window can
be opened.
vFn+F9 Settings: The settings for the Fn+F9
function can be configured.
You can use this Utility to stop and remove all
ejectable devices connected to the ThinkPad
computer, the ThinkPad Mini Dock, and the
ThinkPad Port Replicator II. You cannot use it
to detach the computer from the ThinkPad Mini
Dock or the ThinkPad Port Replicator II.
Note:This function is supported only in
Windows 2000 and Windows XP.
Fn+F10 Reserved.
Fn+F11 Reserved.
Fn+F12 Put the computer into hibernation mode. To
return to normal operation, press the power
button for less than four seconds.
Note:To use Fn+F12 for hibernation in
Windows 2000 and Windows XP, you must
have the IBM PM device driver installed on the
computer.
Fn+PgUp Turn the ThinkLight on or off.
Note:This function is supported only on the
ThinkPad computers that have the ThinkLight.
The on or off status of the ThinkLight is shown
on the screen for a few seconds when you
press Fn+PgUp.
Fn+Home The computer display becomes brighter.
Fn+End The computer display becomes dimmer.
Fn+Spacebar Enable the FullScreen Magnifier function.Product overview
ThinkPad T40 Series53 
						

							Symptom-to-FRU index
The symptom-to-FRU index in this section lists symptoms
and errors and their possible causes. The most likely
cause is listed first, in boldface type.
Note:Do the FRU replacement or other actions in the
sequence shown in the column headed“FRU or
action, in sequence.”If replacing a FRU does not
solve the problem, put the original part back in the
computer. Do not replace a nondefective FRU.
This index can also help you determine, during regular
servicing, what FRUs are likely to need to be replaced
next.
A numeric error is displayed for each error detected in
POST or system operation. In the displays,ncan be any
number.
If no numeric code is displayed, check the narrative
descriptions of symptoms. If the symptom is not described
there, go to“Intermittent problems”on page 61.
NoteFor an IBM device not supported by diagnostic
codes in the ThinkPad notebook computers, see the
manual for that device.
Numeric error codes
Symptom or error FRU or action, in sequence
0175
Bad CRC1, stop POST
task—The EEPROM checksum
is not correct.System board.
0176
System Security—The system
has been tampered with.1.Run IBM BIOS Setup
Utility, and then save
current setting by
pressing F10.
2. System board.
0177
Bad SVP data, stop POST
task—Checksum of the
supervisor password in the
EEPROM is not correct.System board
0182
Bad CRC2. Enter BIOS Setup
and load Setup
defaults.—Checksum of the
CRS2 setting in the EEPROM
is not correct.1.Run IBM BIOS Setup
Utility. Press F9, and
Enter to load the default
setting. Then save current
setting by pressing F10.
2. System board. Symptom-to-FRU index
54ThinkPad T40 Series (MT 2373, 2374, 2375, 2376) 
						

							Symptom or error FRU or action, in sequence
0185
Bad startup sequence settings.
Enter BIOS Setup and load
Setup defaults.1.Run IBM BIOS Setup
Utility. Press F9, and
Enter to load the default
setting. Then save current
setting by pressing F10.
0187
EAIA data access error—The
access to EEPROM is failed.System board.
0188
Invalid RFID Serialization
Information Area.System board.
0189
Invalid RFID configuration
information area—The
EEPROM checksum is not
correct.System board.
0190
Critical low-battery error1.Charge the battery pack.
2. Battery pack.
0191
System Security—Invalid
Remote Change requested.1.Run IBM BIOS Setup
Utility, and then save
current setting by
pressing F10.
2. System board.
0192
System Security—IBM
Embedded Security hardware
tamper detected.System board.
0199
System Security—IBM Security
password retry count exceeded.1.Run IBM BIOS Setup
Utility, and then save
current setting by
pressing F10.
2. System board.
01C8
More than one modem devices
are found. Remove one of
them. Press  to continue.1.Remove either a Mini-PCI
Card. Otherwise, press
Esc to ignore the warning
message.
2. System board.
01C9
More than one Ethernet devices
are found. Remove one of
them. Press  to continue.1.Remove the Ethernet
device that you installed;
or press Esc to ignore the
warning message.
2. System board.
0200
Hard disk error—The hard disk
is not working.1.Reseat the hard-disk
drive.
2. Load Setup Defaults in IBM
BIOS Setup Utility.
3. Hard-disk drive.
4. System board.
021x
Keyboard errorRun interactive tests of the
keyboard and the auxiliary
input device. Symptom-to-FRU index
ThinkPad T40 Series55 
						

							Symptom or error FRU or action, in sequence
0220
Monitor type error—Monitor
type does not match the one
specified in CMOS.Load Setup Defaults in IBM
BIOS Setup Utility.
0230
Shadow RAM error—Shadow
RAM fails at offset nnnn.System board.
0231
System RAM error—System
RAM fails at offset nnnn.1.DIMM.
2. System board.
0232
Extended RAM
error—Extended RAM fails at
offset nnnn.1.DIMM.
2. System board.
0250
System battery error—System
battery is dead.Replace the backup battery
and run IBM BIOS Setup
Utility to reset the time and
date.
0251
System CMOS checksum
bad—Default configuration
used.Replace the backup battery
and run IBM BIOS Setup
Utility to reset the time and
date.
0252
Password checksum bad—The
password is cleared.Reset the password by
running IBM BIOS Setup
Utility.
0260
System timer error1.Replace the backup
battery and run IBM BIOS
Setup Utility to reset the
time and date.
2. System board.
0270
Real time clock error1.Replace the backup
battery and run IBM BIOS
Setup Utility to reset the
time and date.
2. System board.
0271
Date and time error—Neither
the date nor the time is set in
the computer.Run IBM BIOS Setup Utility to
reset the time and date.
0280
Previous boot
incomplete—Default
configuration used.1.Load“Setup Default”in
IBM BIOS Setup Utility.
2. DIMM.
3. System board.
02F4
EISA CMOS not writable1.Load Setup Defaults in
IBM BIOS Setup Utility.
2. Replace the backup battery.
3. System board.
02F5
DMA test failed1.DIMM.
2. System board.
02F6
Software NMI failed1.DIMM.
2. System board.
02F7
Fail-safe timer NMI failed1.DIMM.
2. System board. Symptom-to-FRU index
56ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)