IBM Thinkpad T40 Manual

							The options on the test menu are as follows:
Diagnostics Interactive Tests
vRun Normal Test
vRun Quick Test
vCPU/Coprocessor
vSystemboard
vVideo Adapter
vSerial Ports
vParallel Ports
vFixed Disks
vDiskette Drives
vOther Devices
vCommunication
vWireless LAN
vMemory Test–Full
vMemory Test–QuickvKeyboard
vVideo
vInternal Speaker
vMouse
vDiskette
vSystem Load
vCD-ROM/DVD Test
vIntel Wireless Radio
Notes:
vIn theKeyboardtest inInteractive Tests, the Fn key
is scanned only once. Each key should be held down
for at least 2 seconds; otherwise, it cannot be sensed.
vVideo Adaptertest supports only the LCD display on
the ThinkPad computer. Before running PC-Doctor
DOS, detach the external monitor.
vTo testDigital Signature Chip, the chip must be
enabled.
vWhen Legacy Floppy Drives is enabled in the IBM
BIOS Setup Utility,Diskette Drivestest is activated
even if no legacy diskette drive is attached to the
ThinkPad computer.
4. Run the applicable function test.
5. Follow the instructions on the screen. If there is a
problem, PC-Doctor shows messages describing it.
6. To exit the test, selectQuit—Exit Diag.
Diagnostics
Run Normal Test
Run Quick Test
CPU/Coprocessor
Systemboard
Video Adapter
Serial Ports
Parallel Ports
Fixed Disks
Diskette Drives
Other Devices
Communication
Memory Test - Full
Memory Test - QuickInteractive Tests Hardware Info Utility Quit F1=Help
PC-DOCTOR 2.0 Copyright 2002 PC-Doctor, Inc. All Rights Reserved.
Use the cursor keys and ESC to move in menus. Press ENTER to select.
Wireless LAN
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General descriptions37 
						

							To cancel the test, press Esc.
Note:After executing PC-Doctor, check the system
time/date and reset them if needed.
Detecting system information with
PC-Doctor
PC-Doctor can detect the following system information:
Hardware InfovSystem Configuration
vMemory Contents
vPhysical Disk Drives
vLogical Disk Drives
vVGA Information
vIDE Drive Info
vPCI Information
vPNPISA Info
vSMBIOS Info
vVESA LCD Info
UtilityvRun External Tests
vSurface Scan Hard Disk
vBenchmark System
vDOS Shell
vTech Support Form
vBattery Rundown
vView Test Log
vPrint Log
vSave Log
vFull Erase Hard Drive
vQuick Erase Hard Drive
Checkout guide
38ThinkPad T40 Series (MT 2373, 2374, 2375, 2376) 
						

							Power system checkout
To verify a symptom, do the following:
1. Power off the computer.
2. Remove the battery pack.
3. Connect the ac adapter.
4. Check that power is supplied when you power on the
computer.
5. Power off the computer.
6. Disconnect the ac adapter and install the charged
battery pack.
7. Check that the battery pack supplies power when you
power on the computer.
If you suspect a power problem, see the appropriate one
of the following power supply checkouts:
v“Checking the ac adapter”
v“Checking operational charging”on page 40
v“Checking the battery pack”on page 40
v“Checking the backup battery”on page 41
Checking the ac adapterYou are here because the computer fails only when the ac
adapter is used:
vIf the power problem occurs only when the port
replicator is used, replace the port replicator.
vIf the power-on indicator does not turn on, check the
power cord of the ac adapter for correct continuity and
installation.
vIf the computer does not charge during operation, go to
″Checking operational charging.″
To check the ac adapter, do the following:
1. Unplug the ac adapter cable from the computer.
2. Measure the output voltage at the plug of the ac
adapter cable. See the following figure:
2
1
(16-10V)
Pin Voltage (V dc)
1 +15.5 to +17.0
2 Ground
3. If the voltage is not correct, replace the ac adapter.
4. If the voltage is acceptable, do the following:
vReplace the system board.
vIf the problem persists, go to“Product overview”on
page 45.
Note:Noise from the ac adapter does not always indicate
a defect.
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General descriptions39 
						

							Checking operational chargingTo check whether the battery charges properly during
operation, use a discharged battery pack or a battery pack
that has less than 50 % of the total power remaining when
installed in the computer.
Perform operational charging. If the battery status indicator
or icon does not turn on, remove the battery pack and let it
return to room temperature. Reinstall the battery pack. If
the charge indicator or icon still does not turn on, replace
the battery pack.
If the charge indicator still does not turn on, replace the
system board. Then reinstall the battery pack. If it is still
not charged, go to the next section.
Checking the battery packBattery charging does not start until the Power Meter
shows that less than 95 % of the total power remains;
under this condition the battery pack can charge to 100 %
of its capacity. This protects the battery pack from being
overcharged or from having a shortened life.
To check the status of your battery, move your cursor to
the Power Meter icon in the icon tray of the Windows
taskbar and wait for a moment (but do not click), and the
percentage of battery power remaining is displayed. To get
detailed information about the battery, double-click the
Power Meter icon.
Note:If the battery pack becomes hot, it may not be able
to charge. Remove it from the computer and leave it
at room temperature for a while. After it cools down,
reinstall and recharge it.
To check the battery pack, do the following:
1. Power off the computer.
2. Remove the battery pack and measure the voltage
between battery terminals 1 (+) and 5 (). See the
following figure:
2
3
4
5(-)1(+)
Terminal Voltage (V dc)
1 + 0 to + 12.6
5 Ground ()
3. If the voltage is less than +11.0 V dc, the battery pack
has been discharged.
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40ThinkPad T40 Series (MT 2373, 2374, 2375, 2376) 
						

							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 batteryDo 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 66).
4. Remove the backup battery (see“Checking the battery
pack”on page 40).
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
vIf the voltage is correct, replace the system board.
vIf the voltage is not correct, replace the backup battery.
vIf the backup battery discharges quickly after
replacement, replace the system board.
Checkout guide
General descriptions41 
						

							Checkout guide
42ThinkPad T40 Series (MT 2373, 2374, 2375, 2376) 
						

							ThinkPad T40 Series
Product overview............45
Specifications............45
Status indicators...........47
FRU tests.............49
Fn key combinations..........51
Symptom-to-FRU index..........54
Numeric error codes..........54
Error messages...........58
Beep symptoms...........59
No-beep symptoms..........59
LCD-related symptoms.........60
Intermittent problems..........61
Undetermined problems.........61
FRU replacement notices.........62
Screw notices............62
Retaining serial numbers.........63
Restoring the serial number of the system unit 63
Retaining the UUID.........63
Removing and replacing a FRU........65
1010 Battery pack...........66
1020 Ultrabay Slim device........68
1030 Hard-disk drive..........69
1040 DIMM (optional).........71
1050 Keyboard...........73
1060 DIMM (standard).........77
1070 Modem daughter card (MDC).....78
1080 Bluetooth/Modem daughter card (BMDC) 80
1090 Palm rest...........82
1100 Mini PCI adapter.........84
1110 Fan assembly..........87
1120 Backup battery..........88
1130 Speaker assembly.........90
1140 PC Card slot assembly.......92
1150 Keyboard bezel..........94
1160 LCD assembly..........96
1170CPU.............101
1180 Ultrabay Slim guide rail assembly....102
1190 VGA and Ultrabay Slim device eject button
cable.............104
1200 System board and base cover.....106
2010 LCD front bezel.........113
2020 Inverter card..........115
2030 Bluetooth antenna assembly.....116
2040 LCD panel, LCD cable assembly, wireless
LAN antenna assembly, hinges and LCD cover . 118
3010 ThinkPad Dock II PCI cover......130
3020 ThinkPad Dock II top cover......131
Locations..............134
Front view............134
Rear view.............135
© Copyright IBM Corp. 2003
43  
						

							Bottom view............136
Parts list..............137
T40 series model matrix........137
Overall.............142
AC adapters............148
LCD FRUs............149
14.1-in. XGA TFT.........149
14.1-in. SXGA+ TFT........151
Keyboard.............152
Recovery CDs...........153
For Windows XP professional......153
For Windows 2000.........154
Miscellaneous parts..........155
Optional FRUs...........157
Common parts list..........158
Tools.............158
Power cords (system)........158
Power cords (ThinkPad Dock and ThinkPad
Dock II)...........159
Notices..............160
Trademarks............160
44ThinkPad T40 Series (MT 2373, 2374, 2375, 2376) 
						

							Product overview
This section presents the following product-unique
information:
v“Specifications”
v“Status indicators”on page 47
v“FRU tests”on page 49
v“Fn key combinations”on page 51
Specifications
The following table lists the specifications of the ThinkPad
T40 series:
Feature Description
ProcessorvIntel®Pentium®M processor 1.3 GHz,
L2 512 KB cache
vIntel
®Pentium®M processor 1.5 GHz,
L2 512 KB cache
vIntel
®Pentium®M processor 1.6 GHz,
L2 512 KB cache
Bus architecturev400 MHz PSB (Processor System Bus)
v266 MHz DDR SDRAM (PC2100)
vHUB link
vPCI bus
vLPC bus
Standard memoryv256 MB DDR SDRAM SO-DIMM
(PC2100) card×1
v512 MB DDR SDRAM SO-DIMM
(PC2100) card×1
Optional memoryv128 MB DDR SDRAM SO-DIMM
(PC2100) card
v256 MB DDR SDRAM SO-DIMM
(PC2100) card
v512 MB DDR SDRAM SO-DIMM
(PC2100)
v1 GB DDR SDRAM SO-DIMM (PC2100)
(maximum of 2048 MB)
Graphic memory (on
the system board)v16 MB DDR SDRAM (ATI M6-C16h)
v32 MB DDR SDRAM (ATI M7 -CSP32)
v32 MB DDR SDRAM (ATI M9 -CSP32)
v64 MB DDR SDRAM (ATI M9 -CSP32)
CMOS RAMv242 bytes
Hard-disk drivev20.0 GB, 4200 rpm, 2.5-inch, IDE
interface
v40.0 GB, 5400 rpm, 2.5-inch, IDE
interface
v80.0 GB, 4200 rpm, 2.5-inch, IDE
interface (optional)
(continued)
Product overview
ThinkPad T40 Series45 
						

							Feature Description
Ultrabay Slim device
(standard)v9.5 mm height DVD drive
v9.5 mm height DVD/CD-RW combo
drive
Displayv14.1-inch, 16M colors, XGA (1024×768
resolution) TFT color LCD
v14.1-inch, 16M colors, SXGA+ (1400×
1050 resolution) TFT color LCD
I/O portvExternal monitor connector
vStereo headphone jack
vMonaural microphone jack
vInfrared port
vParallel connector
vDocking connector
vRJ11 connector
vRJ45 connector
vTV-out connector (S-Video)
vUniversal serial bus (USB) connector×
2 (compatible with USB 1.1 and 2.0)
Internal modemv56.6 Kbps
AudiovBuilt-in stereo speakers
vSoftware control volume
Infrared transfervIrDA 1.1
Mini PCI adaptervIBM Dual-Band 11a/b Wi-Fi Wireless
Mini PCI Adapter
vCisco Aironet Wireless 802.11b
vIntel
®PRO/Wireless LAN 2100 3B Mini
PCI Adapter
PC CardvOne Type-III
vTwo Type-II
Ethernet (on the
system board)v10/100Base Ethernet
vGigabit Ethernet
Communication
daughter card
(CDC)vV.90 modem daughter card (MDC)
vIBM Integrated Bluetooth with 56K
Modem (BMDC)
Touch padvUltraNav
ThinkLight Yes
BatteryvLi-Ion battery (6 cells)
vLi-Ion battery (9 cells)
vUltrabay Slim Li Polymer battery (option)
AC adapterv72-watt type
Preinstalled
operating systemvWindows XP Professional
vWindows 2000 Product overview
46ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)