Page 1 IBM Mobile Systems ThinkPad Computer Hardware Maintenance Manual February 2003 This manual supports: ThinkPad T40 (MT 2373/2374/ 2375 2376 ThinkPad Dock II (MT 2877)
Page 2 IBM products, programming, or services in your country. Requests for technical information about IBM products should be made to your IBM authorized dealer or your IBM marketing representative. © Copyright International Business Machines Corporation 2003. All rights reserved.
Page 3: Table Of Contents
. 61 FRU replacement notices . 62 Screw notices . . 62 Retaining serial numbers. . 63 Removing and replacing a FRU. . 65 1010 Battery pack. . 66 1020 Ultrabay Slim device . . 68 © Copyright IBM Corp. 2003...
Page 4 . 149 Keyboard . . 152 Recovery CDs . 153 Miscellaneous parts . . 155 Optional FRUs . . 157 Common parts list . . 158 Notices . 160 Trademarks . . 160 ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 5: About This Manual
About this manual This manual contains service and reference information for IBM ThinkPad T40 series (MT2373, 2374, 2375, and 2376), and ThinkPad Dock II (MT2877) products. Use this manual along with the advanced diagnostic tests to troubleshoot problems. The manual is divided into sections as follows:...
Page 6 ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 7: Introduction
Advise customers to contact the PC Company HelpCenter at 800-772-2227 if they need assistance in obtaining or installing any diskette fixes. Customers in Canada should call IBM HelpPC at 800-565-3344 for assistance or download information. Strategy for replacing FRUs...
Page 8: How To Use Error Messages
In this manual, safety notices appear in English with a page number reference to the appropriate multilingual, translated safety notice found in this section. The following safety notices are provided in English, French, German, Hebrew, Italian, and Spanish. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 9 Safety notices Safety notice 1 Before the computer is powered-on after FRU replacement, make sure all screws, springs, and other small parts are in place and are not left loose inside the computer. Verify this by shaking the computer and listening for rattling sounds.
Page 10 Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim Ersetzen der Bereitschafts-oder Systembatterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgeführt ist. Der Einsatz falscher Batterien kann zu Entzündung oder Explosion führen. (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 11 Safety notices (continuation of safety notice 2) Alcune batterie di riserva contengono una piccola quantità di nichel e cadmio. Non smontarle, ricaricarle, gettarle nel fuoco o nell’acqua né cortocircuitarle. Smaltirle secondo la normativa in vigore (DPR 915/82, successive disposizioni e disposizioni locali).
Page 12 Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim Ersetzen der Batterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgeführt ist. Der Einsatz falscher Batterien kann zu Entzündung oder Explosion führen. (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 13 Safety notices (continuation of safety notice 3) La batteria contiene piccole quantità di nichel. Non smontarla, gettarla nel fuoco o nell’acqua né cortocircuitarla. Smaltirla secondo la normativa in vigore (DPR 915/82, successive disposizioni e disposizioni locali). Quando si sostituisce la batteria, utilizzare soltanto i tipi inseriti nell’appropriato Catalogo parti.
Page 14 Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim Ersetzen der Batterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgeführt ist. Der Einsatz falscher Batterien kann zu Entzündung oder Explosion führen. (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 15 Safety notices (continuation of safety notice 4) La batteria di supporto e una batteria al litio e puo incendiarsi, esplodere o procurare gravi ustioni. Evitare di ricaricarla, smontarne il connettore polarizzato, smontarla, riscaldarla ad una temperatura superiore ai 100 gradi centigradi, incendiarla o gettarla in acqua.
Page 16 áreas afectadas con agua durante 15 minutos como mínimo. Obtenga atención medica si se presenta algún síntoma del fluido despues de lavarse. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 17 Safety notices Safety notice 6 DANGER To avoid shock, do not remove the plastic cover that protects the lower part of the inverter card. Afin d’éviter tout risque de choc électrique, ne retirez pas le cache en plastique protégeant la partie inférieure de la carte d’alimentation.
Page 18 Aunque las baterías principales tienen un voltaje bajo, una batería cortocircuitada o con contacto a tierra puede producir la corriente suficiente como para quemar material combustible o provocar quemaduras en el personal. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 19 Safety notices Safety notice 8 DANGER Before removing any FRU, power off the computer, unplug all power cords from electrical outlets, remove the battery pack, and then disconnect any interconnecting cables. Avant de retirer une unité remplaçable en clientèle, mettez le système hors tension, débranchez tous les cordons d’alimentation des socles de prise de courant, retirez la batterie et déconnectez tous les cordons d’interface.
Page 20: Safety Information
Safety information Safety information The following section presents the safety information that you need to be familiar with before servicing an IBM mobile computer. General safety Follow these rules to ensure general safety: v Observe good housekeeping in the area of the machines during and after maintenance.
Page 21: Electrical Safety
Safety information v After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn or defective. v Reinstall all covers correctly before returning the machine to the customer. Electrical safety Observe the following rules when working on electrical equipment.
Page 22: Safety Inspection Guide
This guide addresses only those items. You should use good judgment to identify potential safety hazards due to attachment of non-IBM features or options not covered by this inspection guide. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 23: Handling Devices That Are Sensitive To Electorostatic Discharge
Insulation must not be frayed or worn. 4. Remove the cover. 5. Check for any obvious non-IBM alterations. Use good judgment as to the safety of any non-IBM alterations. 6. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.
Page 24: Grounding Requirements
– Use the round ground-prong of the AC plug on AC-operated computers. Grounding requirements Electrical grounding of the computer is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 25: Laser Compliance Statement
Laser compliance statement Laser compliance statement Some IBM Personal Computer models are equipped from the factory with an optical storage device such as a CD-ROM drive or a DVD-ROM drive. They are also sold separately as options. The drive is certified in the U.S. to...
Page 26 Opening the CD-ROM drive, DVD-ROM drive or the other optical storage device could result in exposure to hazardous laser radiation. There are no serviceable parts inside those drives. Do not open. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 27 Laser compliance statement Some CD-ROM drives, DVD-ROM drives, or other optical storage devices contain an embedded Class 3A or Class 3B laser diode. Note the following: DANGER Emits visible and invisible laser radiation when open. Do not stare into the beam, do not view directly with optical instruments, and avoid direct exposure to the beam.
Page 28 Laser compliance statement ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 30 Missing parts might be a symptom of unauthorized service or modification. v If the spindle of a hard-disk drive becomes noisy, it may have been subjected to excessive force, or dropped. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 31: Related Service Information
Access IBM Predesktop Area. You can use the Access IBM Predesktop Area to restore the contents of the hard disk to an earlier state using any of the backup images stored in the protected area. Access IBM Predesktop Area runs independently of the Windows operating system.
Page 32 2. Turn off the computer. 3. Turn on the computer. Watch the display carefully. When the following message is displayed, press the blue Access IBM button to open the Access IBM Predesktop Area: “To interrupt normal startup, press the blue Access IBM button.”...
Page 33: Passwords
Related service information v The service partition is created. The system automatically reboots during this process. v The recovery process copies some files to the service partition, and PKUNZIPs others. v Follow the prompts. You may be prompted to change CDs. v When the process is complete, the system reboots.
Page 34: Supervisor Password
Supervisor password: A supervisor password (SVP) protects the system information stored in the IBM BIOS Setup Utility. The SVP must be entered in order to get access to the IBM BIOS Setup Utility and make changes to system configuration settings.
Page 35: How To Remove The Hard-Disk Password
If User only mode is selected and the user HDP has been forgotten and cannot be made available to the servicer, IBM does not provide any services to reset the user HDPs or to recover data from the hard-disk drive.
Page 36: Power Management
TrackPoint, the hard disk, the parallel connector, or the diskette drive within that time. v If the battery indicator blinks orange, indicating that the battery power is low. (Alternatively, if Hibernate when ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 37: Hibernation Mode
Related service information battery becomes low has been selected in the “Power Management Properties” window, the computer goes into hibernation mode.) Note for the APM operating system: Even if you do not set the low-battery alarm, the charge indicator notifies you when the battery is low, and then the computer enters the power-saving mode automatically.
Page 38 When the power is turned on, the computer returns from hibernation mode and resumes operation. The hibernation file in the boot record on the hard-disk drive is read, and system status is restored from the hard-disk drive. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 39: Checkout Guide
For some possible configurations of the computer, PC-Doctor might not run correctly. To avoid this problem, you need to initialize the computer setup by use of the IBM BIOS Setup Utility before you run PC-Doctor. On the IBM BIOS Setup Utility screen, press F9, Enter, F10, and then Enter.
Page 40 Follow the instructions on the screen. 2. The main panel of PC-Doctor appears. 3. Select Diagnostics with the arrow keys, and press Enter. A pull-down menu appears. (Its exact form depends on the model.) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 41: Internal Speaker
DOS, detach the external monitor. v To test Digital Signature Chip, the chip must be enabled. v When Legacy Floppy Drives is enabled in the IBM BIOS Setup Utility, Diskette Drives test is activated even if no legacy diskette drive is attached to the ThinkPad computer.
Page 42: Detecting System Information With Pc-Doctor
Benchmark System v DOS Shell v Tech Support Form v Battery Rundown v View Test Log v Print Log v Save Log v Full Erase Hard Drive v Quick Erase Hard Drive ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 43: Power System Checkout
Checkout guide 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.
Page 44: Checking Operational Charging
1 (+) and 5 (−). See the following figure: Terminal Voltage (V dc) + 0 to + 12.6 1(+) Ground (−) 5(-) 3. If the voltage is less than +11.0 V dc, the battery pack has been discharged. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 45: Checking The Backup Battery
Checkout guide 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.
Page 46 Checkout guide ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 47: Thinkpad T40 Series
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...
Page 48 Common parts list . . 158 Tools . . 158 Power cords (system) . . 158 Power cords (ThinkPad Dock and ThinkPad Dock II) . 159 Notices . 160 Trademarks . . 160 ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 49: Product Overview
64 MB DDR SDRAM (ATI M9 -CSP32) v 242 bytes CMOS RAM v 20.0 GB, 4200 rpm, 2.5-inch, IDE Hard-disk drive interface v 40.0 GB, 5400 rpm, 2.5-inch, IDE interface v 80.0 GB, 4200 rpm, 2.5-inch, IDE interface (optional) (continued) ThinkPad T40 Series...
Page 50 Li-Ion battery (6 cells) Battery v Li-Ion battery (9 cells) v Ultrabay Slim Li Polymer battery (option) v 72-watt type AC adapter v Windows XP Professional Preinstalled v Windows 2000 operating system ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 51: Status Indicators
Product overview Status indicators The system status indicators show the status of the computer, as follows: ThinkPad T40 Series...
Page 52 Note: Do not move the system while the green drive-in-use light is on. Sudden physical shock could cause drive errors. (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 53: Fru Tests
Applicable test System board 1. Diagnostics --> CPU/Coprocessor 2. Diagnostics --> Systemboard Power Diagnostics --> Other Devices --> IBM AC Adapter, IBM Battery 1 (IBM Battery 2) LCD unit 1. Diagnostics --> Video Adapter 2. Interactive Tests --> Video Modem 1.
Page 54 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 ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 55: Fn Key Combinations
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) ThinkPad T40 Series...
Page 56 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) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 57 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.
Page 58: Symptom-To-Fru Index
Utility. Press F9, and and load Setup Enter to load the default defaults.—Checksum of the setting. Then save current CRS2 setting in the EEPROM setting by pressing F10. is not correct. 2. System board. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 59 2. System board. 0200 1. Reseat the hard-disk Hard disk error—The hard disk drive. is not working. 2. Load Setup Defaults in IBM BIOS Setup Utility. 3. Hard-disk drive. 4. System board. 021x Run interactive tests of the Keyboard error keyboard and the auxiliary input device.
Page 60 2. Replace the backup battery. 3. System board. 02F5 1. DIMM. DMA test failed 2. System board. 02F6 1. DIMM. Software NMI failed 2. System board. 02F7 1. DIMM. Fail-safe timer NMI failed 2. System board. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 61 Hard disk partition layout error Predesktop Area has been previously disabled, then go the the IBM BIOS Setup Utility by pressing F1 to open the IBM BIOS Setup Utility. Select Security->IBM Predesktop Area-> Access IBM Predesktop Area. Set this item to Disabled. Save and exit.
Page 62: Error Messages
The IBM Predesktop Area in services failed. Press <Esc> to the HDD is broken. To use resume. the IBM Predesktop Area, get a recovery CD, and recover the IBM Predesktop area using it. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 63: Beep Symptoms
Only cursor appears. Reinstall operating system. Four cycles of four short beeps System board (IBM security and a blank screen. chip) Five short beeps and a blank System board screen.
Page 64: Lcd-Related Symptoms
Characters missing pixels. “LCD-related symptoms.” v Screen abnormal. 2. Reseat all LCD connectors. v Wrong color displayed. 3. LCD assembly. 4. System board. Horizontal or vertical lines LCD assembly. displayed on LCD. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 65: Intermittent Problems
6. If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU. 7. If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU): a. System board b. LCD assembly ThinkPad T40 Series...
Page 66: Fru Replacement Notices
Read this section carefully before replacing any FRU. Screw notices Loose screws can cause a reliability problem. In IBM ThinkPad computer, this problem is addressed with special nylon-coated screws that have the following characteristics: v They maintain tight connections.
Page 67: Retaining Serial Numbers
Note: The serial number of the system unit is written on the label attached on the bottom of the computer. Retaining the UUID The Universally Unique Identifier (UUID) is a 128-bit number uniquely assigned to your computer at production ThinkPad T40 Series...
Page 68 Version 1.69, and restart the computer. 2. From the main menu, select 4. Assign UUID. A new UUID is created and written. If a valid UUID already exists, it is not overwritten. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 69: Removing And Replacing A Fru
The system board is sensitive to, and can be damaged by, electrostatic discharge. Before touching it, establish personal grounding by touching a ground point with one hand or by using an electrostatic discharge (ESD) strap (P/N 6405959). ThinkPad T40 Series...
Page 70: 1010 Battery Pack
Removing and replacing a FRU 1010 Battery pack DANGER Use only the battery specified in the parts list for your computer. Any other battery could ignite or explode. (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 71 When installing: Install the battery pack along the slide rails on the left and right sides of the battery-pack slot. Make sure that both battery latches, a and b , are in the locked position, as in the following figure. ThinkPad T40 Series...
Page 72: 1020 Ultrabay Slim Device
“Optional FRUs” on page 157. Note: When you release the switch in step 1 , the lever pops out. In step 2 , pull the lever a little to release the device from the bay. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 73: 1030 Hard-Disk Drive
“1010 Battery pack” on page 66 Note: The hard disk is attached to the cover. Step Screw (quantity) HDD screw (1) or security screw (1) Note: Use a 2.5-mm Allen wrench to remove the security screw. (continued) ThinkPad T40 Series...
Page 74 Removing and replacing a FRU When installing: Make sure that the hard-disk connector is attached firmly. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 75: 1040 Dimm (Optional)
Removing and replacing a FRU 1040 DIMM (optional) For access, remove this FRU: v “1010 Battery pack” on page 66 Note: Loosen the screw 1 , but do not remove it. (continued) ThinkPad T40 Series...
Page 76 When installing: Insert the notched end of the DIMM into the socket. Press the DIMM firmly, and pivot it until it snaps into the place. Make sure that it is firmly fixed in the slot and does not move easily. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 77: 1050 Keyboard
Removing and replacing a FRU 1050 Keyboard For access, remove this FRU: v “1010 Battery pack” on page 66 Step Icon Screw (quantity) Color Torque M2 × 10 mm, flat-head, Black 0.245 Nm nylon-coated (4) (2.5 kgfcm) (continued) ThinkPad T40 Series...
Page 78 Then release the latches of the keyboard from the frame. The front side of the keyboard pops out. Pull the keyboard a little in the direction of the arrow 3 , and then detach the connector 4 . ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 79 Removing and replacing a FRU When installing: 1. Attach the connector 1 . 2. Make sure that the keyboard edges, marked a in the figure, are under the frame. (continued) ThinkPad T40 Series...
Page 80 4. Make sure that all the projections on the front side of the keyboard b are firmly attached under the frame. 5. Secure the keyboard from the underside of the computer, using the new screws provided with the keyboard. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 81: 1060 Dimm (Standard)
When installing: Insert the notched end of the DIMM into the socket. Press the DIMM firmly, and pivot it until it snaps into the place. Make sure that it is firmly fixed in the slot and does not move easily. ThinkPad T40 Series...
Page 82: 1070 Modem Daughter Card (Mdc)
M2 × 10 mm, flat-head, Black 0.245 Nm nylon-coated (2) (2.5 kgfcm) In step 2 , remove the card by pulling the tab with your fingers in the direction of the arrow. (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 83 Removing and replacing a FRU Turn the card over 3 , and detach the modem connector When installing: Make sure that connector 4 and the connector on the underside of the card are firmly attached. ThinkPad T40 Series...
Page 84: 1080 Bluetooth/Modem Daughter Card (Bmdc)
M2 × 10 mm, flat-head, Black 0.245 Nm nylon-coated (2) (2.5 kgfcm) In step 2 , remove the card by pulling the tab with your fingers in the direction of the arrow. (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 85 Unplug the jack by pulling the tab with your fingers. When installing: Make sure that connector 4 , the jack 5 , and the connector on the underside of the card are firmly attached. ThinkPad T40 Series...
Page 86: 1090 Palm Rest
M2 × 14 mm, Black 0.245 Nm bind-head, (2.5 kgfcm) nylon-coated (3) Models with a 802.11a/b wireless LAN Mini PCI adapter — M2 × 14 mm, T7, Black 0.245 Nm nylon-coated (3) (2.5 kgfcm) (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 87 4 . Then remove the palm rest in the direction of arrow 5 . For other models, skip step 4 . When installing: On a model with a touch pad, make sure that connector 4 is firmly attached. ThinkPad T40 Series...
Page 88: 1100 Mini Pci Adapter
“1050 Keyboard” on page 73 v “1090 Palm rest” on page 82 Note: When unplugging the antenna jack, do not pull the cable; it might snap. Unplug the jack by pulling the tab with your fingers. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 89 M, and the black antenna cable with the tab marked AUX into jack A. Cisco Aironet Wireless 802.11b Plug the gray antenna cable with the tab marked MAIN into jack M, and the black antenna cable with the tab marked AUX into jack A. MAIN ThinkPad T40 Series...
Page 90 Insert the notched end of the card into the socket, and then press the card firmly. Pivot the card until it snaps into place. Make sure that it is firmly fixed in the slot and does not move easily. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 91: 1110 Fan Assembly
Black 0.245 Nm nylon-coated (3) (2.5 kgfcm) When installing: 1. Make sure that the connector 3 is firmly attached. 2. Apply thermal grease on the part marked a in this figure. (Bottom view of the fan assembly) ThinkPad T40 Series...
Page 92: 1120 Backup Battery
For access, remove these FRUs in order: v “1010 Battery pack” on page 66 v “1030 Hard-disk drive” on page 69 v “1050 Keyboard” on page 73 v “1090 Palm rest” on page 82 (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 93 Removing and replacing a FRU When installing: Make sure that the battery connector 2 is firmly attached. ThinkPad T40 Series...
Page 94: 1130 Speaker Assembly
“1030 Hard-disk drive” on page 69 v “1050 Keyboard” on page 73 v “1090 Palm rest” on page 82 Step Screw (quantity) Color Torque M2 × 10 mm, flat-head, Black 0.245 Nm nylon-coated (2) (2.5 kgfcm) (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 95 Removing and replacing a FRU In step 3 , release the speaker cables from the cable guide. When installing: Make sure that the connector 4 is firmly attached. Then route the cable as in 3 . ThinkPad T40 Series...
Page 96: 1140 Pc Card Slot Assembly
“1090 Palm rest” on page 82 v “1130 Speaker assembly” on page 90 Step Screw (quantity) Color Torque M2 × 4 mm, bind-head, Black 0.245 Nm nylon-coated (2) (2.5 kgfcm) (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 97 Removing and replacing a FRU When installing: Make sure that the connector on the underside of the PC card slot 2 is firmly attached, and then secure the slot with the screws. ThinkPad T40 Series...
Page 98: 1150 Keyboard Bezel
“1030 Hard-disk drive” on page 69 v “1050 Keyboard” on page 73 v “1090 Palm rest” on page 82 Step Screw (quantity) Color Torque M2 × 19 mm, bind-head, Black 0.245 Nm nylon-coated (2) (2.5 kgfcm) (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 99 In step 3 , make sure that all the latches marked a are detached, and then remove the bezel. When installing: Make sure that all the latches marked a are firmly attached. Attach herness left ( b ), and then secure the keyboard bezel with the screws. ThinkPad T40 Series...
Page 100: 1160 Lcd Assembly
“1100 Mini PCI adapter” on page 84 v “1150 Keyboard bezel” on page 94 Step Screw (quantity) Color Torque M2.5 × 4.8 mm, bind-head, Black 0.245 Nm nylon-coated (4) (2.5 kgfcm) (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 101 After removing the screw, remove bracket 3 . Then detach the LCD connector 4 . When installing: Make sure that the bracket 3 and the connector 4 are firmly attached, and then secure them with the screw. (continued) ThinkPad T40 Series...
Page 102 Removing and replacing a FRU Step Screw (quantity) Color Torque M2 × 10 mm, flat-head, Black 0.245 Nm nylon-coated (1) (2.5 kgfcm) (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 103 Removing and replacing a FRU Release the antenna cables from the cable guide 6 . When installing: Make sure that the antenna cables are firmly routed as shown in the figure. (continued) ThinkPad T40 Series...
Page 104 Removing and replacing a FRU ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 105: 1170 Cpu
CPU 2 . When installing: Place the CPU on the CPU socket a , and then rotate the head of the screw in the direction of arrow b to secure the CPU. ThinkPad T40 Series...
Page 106: 1180 Ultrabay Slim Guide Rail Assembly
“1150 Keyboard bezel” on page 94 v “1160 LCD assembly” on page 96 Step Screw (quantity) Color Torque M2 × 4 mm, bind-head, Black 0.245 Nm nylon-coated (1) (2.5 kgfcm) (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 107 (3) (2.5 kgfcm) In step 4 , remove the Ultrabay Slim guide rail assembly and the hard-disk drive guide rail together. Separate the Ultrabay Slim guide rail assembly a and the hard-disk drive guide rail b . ThinkPad T40 Series...
Page 108: 1190 Vga And Ultrabay Slim Device Eject Button Cable
“1180 Ultrabay Slim guide rail assembly” on page 102 Step Screw (quantity) Color Torque Hex stud (2) Silver 0.392 Nm (4 kgfcm) When installing: Make sure that the connector 1 is firmly attached. (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 109 Removing and replacing a FRU Step Screw (quantity) Color Torque M2 × 4 mm, bind-head, Black 0.245 Nm nylon-coated (1) (2.5 kgfcm) ThinkPad T40 Series...
Page 110: 1200 System Board And Base Cover
104 There are two types of system board FRU for the ThinkPad T40 series, as follows: v System board with IBM security chip (bottom view) Note: The security chip a is embedded on the underside of the system board.
Page 111 Removing and replacing a FRU v System board without IBM security chip (bottom view) Begin by checking the FRU number of the system board, and be sure to use the correct system board for the computer. For the FRU numbers, see “Parts list” on page 137.
Page 112 Before removing the system board, remove the support structure ( a ) and the cable guide ( b ). When installing: Make sure that the connectors 2 are firmly attached to the system board. (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 113 Removing and replacing a FRU Step Screw (quantity) Color Torque M2 × 10 mm, flat-head, Black 0.245 Nm nylon-coated (1) (2.5 kgfcm) M2 × 4 mm, bind-head, Black 0.392 Nm nylon-coated (1) (4 kgfcm) (continued) ThinkPad T40 Series...
Page 114 M2 × 10 mm, flat-head, Black 0.245 Nm nylon-coated (1) (2.5 kgfcm) In step 9 , remove the I/O plate bracket ( c ) and the system board ( d ) together. (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 115 Gold 0.392 Nm nylon-coated (1) (4 kgfcm) When installing: Attach the system board so that the two small projections on the base cover fit into the holes provided, and then secure the system board with the screw. ThinkPad T40 Series...
Page 116 FCC leabels on it, find the same one from the label kit and stick it on the new base cover. Stick the labels on the new base cover as shown in this figure. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 117: 2010 Lcd Front Bezel
Torque M2 × 3 mm, pan-head, Black 0.245 Nm nylon-coated (2) (2.5 kgfcm) M2.5 × 4.8 mm, Black 0.392 Nm bind-head, nylon-coated (4 kgfcm) M2 × 3 mm, pan-head, Balck 0.245 Nm nylon-coated (6) (2.5 kgfcm) (continued) ThinkPad T40 Series...
Page 118 Removing and replacing a FRU ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 119: 2020 Inverter Card
M2 × 3 mm, small-head, Silver 0.245 Nm nylon-coated (1) (2.5 kgfcm) When installing: Make sure that connectors 2 and 3 are firmly attached. Cable routing: When replacing the inverter card, route the connector cable as in this figure: ThinkPad T40 Series...
Page 120: 2030 Bluetooth Antenna Assembly
“2010 LCD front bezel” on page 113 Slide the spiral tube binding the antenna cables ( 1 ) first, and then release the cables from the cable guide ( 2 ). (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 121 Removing and replacing a FRU Step Screw (quantity) Color Torque M2 × 3 mm, small-head, Silver 0.245 Nm nylon-coated (2) (2.5 kgfcm) ThinkPad T40 Series...
Page 122: Lcd Panel, Lcd Cable Assembly, Wireless Lan Antenna Assembly, Hinges And Lcd Cover
“2020 Inverter card” on page 115 v “2030 Bluetooth antenna assembly” on page 116 Before removing the LCD panel, remove the left latch first. In step 1 , unlatch the latch bar as in this figure. (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 123 Lift the latch bar in the direction of the arrow 2 , and then remove the left latch in the direction of the arrow 3 . When installing: Attach the left latch to the LCD cover as follows: (continued) ThinkPad T40 Series...
Page 124 Removing and replacing a FRU Step Screw (quantity) Color Torque M2 × 3 mm, pan-head, Black 0.245 Nm nylon-coated (1) (2.5 kgfcm) (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 125 ( 5b ). Lift the LCD panel in the direction of arrow 6 , and detach the wireless LAN antenna 7 and the ThinkLight 8 . Then remove the LCD panel in the direction of arrow 9 . (continued) ThinkPad T40 Series...
Page 126 (2) (2.5 kgfcm) Remove the hinges ( b ) from the LCD assembly. Step Screw (quantity) Color Torque M2 × 3 mm, small-head, Silver 0.245 Nm nylon-coated (4) (2.5 kgfcm) (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 127 Removing and replacing a FRU Turn over the LCD panel and strip off the tape 15 securing the FPC ( c ). Then detach the connector 16 in the direction of the arrow. (continued) ThinkPad T40 Series...
Page 128 Removing and replacing a FRU Remove the right latch from the LCD cover. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 129 Removing and replacing a FRU When installing: Attach the right latch to the LCD cover as follows: ThinkPad T40 Series...
Page 130 Removing and replacing a FRU Routing the cables of the wireless LAN antenna: Route the antenna cables as the following drawings: (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 131 Removing and replacing a FRU (continued) ThinkPad T40 Series...
Page 132 Removing and replacing a FRU Coil the spiral tube round the antenna cables. Slide the spiral tube in the direction of the arrow 7 . (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 133 Removing and replacing a FRU Move the spiral tube until it reaches at the cable guide of the LCD cover as in this figure. Make sure that the antenna cable is not pinched by cable clip ( a ). ThinkPad T40 Series...
Page 134: 3010 Thinkpad Dock Ii Pci Cover
Removing and replacing a FRU 3010 ThinkPad Dock II PCI cover (Bottom view) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 135: 3020 Thinkpad Dock Ii Top Cover
Removing and replacing a FRU 3020 ThinkPad Dock II top cover (Rear view) Step Screw (quantity) Torque M2.5 × 4.8 mm (3) 0.392 Nm (4 kgfcm) Step Screw (quantity) Torque M2.5 × 4.8 mm (4) 0.392 Nm (4 kgfcm) (continued) ThinkPad T40 Series...
Page 136 Removing and replacing a FRU (Bottom view) Step Screw (quantity) Torque M2.5 × 4.8 mm (6) 0.392 Nm (4 kgfcm) (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 137 Make sure that the system lock key A is set to the Unlock position. Release the front latches in step 4 , and then remove the top cover 5 . Then detach the connector cable 6 as in the figure. ThinkPad T40 Series...
Page 138: Locations
Ultrabay Slim status indicator Ultrabay Slim latch Ultrabay Slim device eject lever Ultrabay Slim TrackPoint pointing stick TrackPoint buttons Touch pad buttons Touch pad UltraNav Access IBM button Volume control buttons Power switch ThinkLight ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 139: Rear View
Power status indicators Bluetooth status indicator PC Card eject buttons PC Card slots Microphone jack Stereo headphone jack RJ-45 (Ethernet) connector RJ-11 (modem) connector TV-out connector Universal serial bus (USB) connectors Security keyhole Parallel connector AC power connector ThinkPad T40 Series...
Page 140: Bottom View
Locations Bottom view Hard-disk drive Optional DIMM slot Battery pack Battery pack lock Docking connector Battery pack latch Infrared port Built-in stereo speakers LCD latch ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 141: Parts List
(Intel) 2373-19x DVD/ CD-RW combo 2373-14x, 16x, DVD- — C1x, 2374-14x 2373-12x, DVD/ 2374-12x CD-RW combo T40 (CPU, Ban 1.3G ; memory, 256 MB; Video chip, M7-32; LCD, 14.1-in. SXGA+) 2373-58x DVD- — Gigabit 30 GB (continued) ThinkPad T40 Series...
Page 142 Gigabit 2373-8Dx, DVD- 2373-B2x DVD/ 802.11b CD-RW (Intel) combo 2373-B5x 802.11b (Cisco) 2374-7Dx — SC, BT 2373-4Ax 802.11b BMDC (Intel) SC, BT 2373-79x 802.11b (Cisco) 2373-C3x 802.11b (Intel) 2373-C4x — 10/100 (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 143 BMDC 80 GB CD-RW combo combo T40 (CPU, Ban 1.5G ; memory, 512 MB; Video chip, M9-32; LCD, 14.1-in. SXGA+) SC, 9C 2373-91x DVD/ — Gigabit 80 GB CD-RW SC, BT, 2373-92x 802.11 BMDC combo combo (continued) ThinkPad T40 Series...
Page 144 Gigabit 2373-A3x 10/100 SC, BT 2373-A2x Gigabit BMDC 2373-A8x 1.3 GHz M9-32 — 14.1- 2373-A1x 1.6 GHz SXGA+ SC, BT 2373-A9x BMDC GL-64 SC: models featuring security chip BT: models featuring Bluetooth ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 145 – Some technical experience is required. – HelpCenter assistance may be used. – Problem determination can be done by the customer, either on site or with HelpCenter assistance. v FRUs marked with OP are available as options. ThinkPad T40 Series...
Page 146: Overall
Parts list Overall ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 147 51x, 58x, 61x, 66x, 6Bx, 6Dx, C1x v 2374-12x, 14x Hard-disk drive (40 GB) 9.5 mm 5400 92P6342 * rpm, IBM STD OP v 2373-22x, 24x, 25x, 29x, 2Ax, 2Bx, 42x, 44x, 47x, 49x, 4Ax, 4Bx, 54x, 71x, 72x, 75x, 76x, 78x, 79x, 7Ax,...
Page 148 85x, 86x, 88x, 8Ax, 8Cx, 8Dx, A2x, A3x, A4x, A5x, A6x, A7x, A9x, B2x, B5x, BDx, C1x, C3x, C4x, C7x, C8x, v 2374-12x, 14x, 72x, 7Cx, 82x, 8Cx v 2375-72x v 2376-72x (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 149 SONY OP v 2373-33x, 91x, 9Ax, 92x, 9Bx, 94x, 96x, G1x, G2x For optional battery packs, see “Optional FRUs” on page 157. Base cover assembly 2373 91P8562 N v 2373-all except xxK Korea 91P8564 N v 2373-xxK (continued) ThinkPad T40 Series...
Page 150 10/100 Ethernet with security chip v 2373-6Bx, 6Dx, A7x System board assembly for M7-32 26P8485 N 10/100 Ethernet v 2373-12x, 14x, 16x, 24x, 71x, 7Ax, 81x, 8Ax, A5x, C1x v 2374-12x, 14x (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 151 ® ® CPU assembly, Intel Pentium 26P8483 N processor 1.6 GHz v 2373-9xx, A1x, A9x, G1x, G2x Fan assembly (long) 91P8392 N v 2373-58x, 91x, 9Ax, 92x, 9Bx, 93x, 94x, 96x, 9Cx, A1x, A8x, A9x, G1x, (continued) ThinkPad T40 Series...
Page 152: Ac Adapters
2-pin (72W) slim adapter, ASTEC for non-PFC 08K8205 model (models xxE, xxF, xxJ, xxP, xxS, xxU, xxY) OP 2-pin (72W) slim adapter, DELTA for non-PFC 08K8209 model (models xxE, xxF, xxJ, xxP, xxS, xxU, xxY) OP ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 153: Lcd Frus
14.1-in. XGA TFT No. FRU a- d See “Miscellaneous parts” on page 155. LCD cover kit (WW) 91P8384 N v 2373-all except xxK v 2374-all except xxK LCD cover kit (Korea) 91P8386 N v 2373-xxK v 2374-xxK (continued) ThinkPad T40 Series...
Page 154 82x, 85x, 86x, 88x, 8Ax, 8Cx, 8Dx, A2x, A3x, A4x, A5x, A6x, A7x, B2x, B5x, BDx, C1x, C3x, C4x, C7x, C8x, v 2374-12x, 14x, 72x, 7Cx, 82x, 8Cx v 2375-72x v 2376-72x (continued) ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 155: In. Sxga+ Tft
9Bx, 93x, 94x, 96x, 9Cx, A1x, A8x, A9x, G1x, G2x LCD panel 14.1-in. SXGA+, SAMSUNG 11P8348 N v 2373-32x, 33x, 58x, 91x, 9Ax, 92x, 9Bx, 93x, 94x, 96x, 9Cx, A1x, A8x, A9x, G1x, G2x Clear plate 91P8387 N ThinkPad T40 Series...
Page 156: Keyboard
08K5054 Japanese 08K5045 Korean 08K5059 Norwegian 08K5052 Polish 08K5070 Portuguese 08K5057 Russian 08K5063 Slovak 08K5069 Slovenian 08K5071 Spanish, European 08K5055 Spanish, Latin American 08K5058 Swedish or Finnish 08K5051 Swiss 08K5056 Turkish 08K5061 ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 157: Recovery Cds
01R7647 English, U.K. 01R7638 English, U.S. 01R7637 Finnish 01R7646 French 01R7641 German 01R7642 Greek 01R7654 Hebrew 01R7651 Hungarian 01R7655 Italian 01R7645 Japanese 01R6861 Norwegian 01R7648 Polish 01R7652 Portuguese 01R7639 Russian 01R7656 Spanish 01R7643 Swedish 01R7644 Turkish 01R7653 ThinkPad T40 Series...
Page 158: For Windows 2000
English, U.S. 01R7597 Finnish 01R7606 French 01R7601 German 01R7602 Greek 01R7614 Hebrew 01R7611 Hungarian 01R7615 Italian 01R7605 Japanese 01R6858 Norwegian 01R7608 Polish 01R7612 Portuguese 01R7599 Russian 01R7616 Spanish 01R7603 Swedish 01R7604 Turkish 01R7613 ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 159: Miscellaneous Parts
Pull lever spring v Puller v RJ11 cover v Rubber, shock absorber v Insulation, bottom v Foam under fan v Cu tape under fan v Cu tape v Insulation, louver v Screw caps (square, thin) (continued) ThinkPad T40 Series...
Page 160 Screw caps (square, thin) v Screw caps (oval, not painted) v Screw caps (not painted) v Screw caps (square) Note: Italicized letters in parentheses are references to the exploded view on page 149. ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)
Page 161: Optional Frus
AC adapter (3 pin, 120 W), LITEON for 02K7096 ThinkPad Mini Dock ThinkPad Port Replicator II 74P6735 ThinkPad Slim Drive Adapter for Ultrabay 2000 62P4556 Multiple battery charger 02K6642 Diskette drive cable 27L0525 Diskette drive (TEAC) 08K9606 Diskette drive (SONY) 08K9607 ThinkPad T40 Series...
Page 162: Common Parts List
— 1.69 Note: Download the file from the following Web site: http://www.ibm.com/pc/partner/infotips Power cords (system) IBM power cords for a specific country or region are usually available only in that country or region: For 2-pin power cords: Region Canada, U.S.
Page 163: Power Cords (Thinkpad Dock And Thinkpad Dock Ii)
China (P.R.C.) (other than Hong Kong S.A.R.) 02K0539 Switzerland 76H3528 Power cords (ThinkPad Dock and ThinkPad Dock II) IBM power cords for a specific country or region are usually available only in that country or region: For 3-pin power cords: Region Argentina 36L8868...
Page 164: Notices
Notices Notices References in this publication to IBM products, programs, or services do not imply that IBM intends to make these available in all countries in which IBM operates. Any reference to an IBM product, program, or service is not intended to state or imply that only that IBM product, program, or service may be used.
Page 165 Notices ThinkPad T40 Series...
Page 166 Part Number: 92P1286 (1P) P/N: 92P1286...

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