IBM THINKPAD T22 Manuale Utente

IBM Mobile SystemsThinkPad ComputerHardware Maintenance ManualApril 2002This manual supports:ThinkPad T20, T21, T22, T23(MT 2647/2648)ThinkPad Dock (M

Safety notice 2DANGERSome standby batteries contain a small amount ofnickel and cadmium. Do not disassemble a standbybattery, recharge it, throw it in

1120 Fan assemblyFor T20, T21, T22 seriesFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “

When installing the fan assembly:For T20Remove the protective sheet from the thermal rubberon the fan assembly.For T21, T22Apply the thermal grease (0

For T23 seriesFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive” on pa

456Step Screw (quantity) Torque4 M2.0 × 13.5 mm, nylon-coated (3) 0.245 Nm(2.5 kgfcm)When installing: Apply the thermal grease (05K5751) onthe a-p

1130 CPUFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive” on page 63v

For T23 seriesNote: The shape of the CPU socket vary from model tomodel. When removing or installing the CPU,confirm the shape of the CPU socket and d

1140 PC Card slot assemblyFor T20, T21, T22 seriesFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on p

When installing the PC card slot assembly, do as shown inthe figure.Removing and replacing a FRUThinkPad T20, T21, T22 and T23 series 101

For T23 seriesFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive” on pa

1150 SpeakerFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive” on page

(continuation of safety notice 2)Alcune batterie di riserva contengono una piccolaquantità di nichel e cadmio. Non smontarle,ricaricarle, gettarle nel

Before installing new speaker for T22 and T23 series:Secure speaker RF bracket (a) to the new speaker withan adhesive tape inside of the bracket.For

1160 Hard-disk bayFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive” o

When installing: Make sure the followings:v a-parts of the insulation do not come off.v b-part (b's are only for T23 series) is not turnedo

1170 Ultrabay 2000 slotFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk dri

For T21 and T22 series12Note: T21 series do not have the removal procedure 3and 4. After step 2, go to step 5.When installing: Make sure that

For T23 series321Step Screw (quantity) Torque1 M2 × 13.5 mm, nylon-coated (1) 0.245 Nm(2.5 kgfcm)2 M2.5 × 14 mm, nylon-coated (1) 0.392 Nm(4 kgfcm

4Note: The models with 13.3-in. XGA LCD in T20 seriesand in T21 series do not have FPC bracket (5).For those models, skip step 5.5aWhen installing

Note: Step 6 to step 9 are common for T20, T21, T22and T23 series.6Step Screw (quantity) Torque6 M2.5 × 4.8 mm, nylon-coated (1) 0.392 Nm(4 kgfc

When installing: Make sure that the guide of the slot isfirmly attached 1and if the eject leverhas been poped out, push it back in thedirection of a

1180 System boardFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive” on

Safety notice 3DANGERThe battery pack contains small amounts of nickel.Do not disassemble it, throw it into fire or water, orshort-circuit it. Dispose

When installing: Make sure that all of the guides arefirmly attached 1 and you havefastened the connector firmly to theunderside of the system board

For T23 series123564Step Screw (quantity) Torque5 M2.5 × 4.8 mm, nylon-coated (1) 0.392 Nm(4 kgfcm)(continued)Removing and replacing a FRUThinkPad T

When installing: Make sure that all of the guides arefirmly attached 1 and you havefastened the connector firmly to theunderside of the system board

1190 Secure chipNoteThis section is only for the following models;v MT2647-5Lx, 9Lx, DLT, HLUv MT2647-5Dx, 5Fx, 5Hx, 5Jx, 5Nx, 5Mx, 9Dx, 9Fx,9Hx, 9Jx,

1200 Microphone cableFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive

2010 LCD assemblyFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive” on

For models excepting MT2647-xLx, xNx4243Step Screw (quantity) Torque2 M2.5 × 14 mm, nylon-coated (1) 0.392 Nm(4 kgfcm)4 M2.5 × 4.8 mm, nylon-coate

For MT2647-xLx, xNx53254Step Screw (quantity) Torque2 M2.5 × 14 mm, nylon-coated (1) 0.392 Nm(4 kgfcm)5 M2.5 × 4.8 mm, nylon-coated (2) 0.392 Nm(4

2020 Front bezelFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive” on

2030 Inverter cardFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive” o

Safety notice 4DANGER(continuation of safety notice 3)Las baterías contienen pequeñas cantidades deníquel. No las desmonte, ni recargue, ni las eche a

2040 LCD panelFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive” on pa

2a22a22a2aStep Screw (quantity) TorqueFor 13.3-in. XGA LCD LG (05K9636), 14.1-in. XGA LCD Hitachi(05K9568), 14.1-in. SXGA+ LCD Hitachi (46L2493)2 M2

654753(continued)Removing and replacing a FRU126 ThinkPad T20, T21, T22, T23 (MT 2647/2648)

Cable routing: When installing the LCD, route theconnector cable as in the following figure:Removing and replacing a FRUThinkPad T20, T21, T22 and T23

2050 Antenna assemblyNoteThis section is only for MT2647-xFx, xJx, xLx, xNx,xSx. Other models do not have the antennaassembly.For access, remove these

Strip off the insulation tapes 2 securing the antennacables.2233Removing and replacing a FRUThinkPad T20, T21, T22 and T23 series 129

Cable routing: Route the antenna cables as follows;1. Hook the black antenna cable to projection (1)ontheright corner of the rear cover.2. Route the

2060 Sub cardFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive” on pag

4aWhen installing, do the following:v Attach the I/O card spacer (a) onto the new sub cardand make sure that the connector is firmly attached.v Make

3010 ThinkPad Dock PCI coverBefore replacing the PCI cover:There are two types of ThinkPad Dock, as follows:v ThinkPad Dock: FRU no. 08N1546 (PCI cove

(continuation of safety notice 4)Die Systembatterie ist eine Lithiumbatterie. Siekann sich entzünden, explodieren oder schwereVerbrennungen hervorrufe

Note: The following illustration shows how to remove thePCI cover of ThinkPad Dock (FRU no. 08N1546).Do the same to remove the PCI cover of ThinkPadDo

3020 ThinkPad Dock top coverNoteThis section is only for the ThinkPad Dock (FRU no.08N1546). The top cover and screw kit for ThinkPadDock (FRU no. 12P

222(Bottom view)Step Screw (quantity) Torque2 M2.5 × 4.8 mm (8) 0.392 Nm(4 kgfcm)(continued)Removing and replacing a FRU136 ThinkPad T20, T21, T22,

Make sure that the system lock key A is set to the Unlockposition. Release the front latches in step 3, and thenremove the top cover 4. For step 

When replacing the top cover, do the following:v Make sure that the springs are placed correctly.v Make sure that the device release lever is seatedco

v Make sure that the release button works correctly.Removing and replacing a FRUThinkPad T20, T21, T22 and T23 series 139

LocationsFront view1 System status indicators2 Power switch3 Battery, standby mode, and Ultrabay statusindicators4 Bay latch5 Eject button6

Rear view1 Security keyhole2 TV-out connector3 Serial connector4 Parallel connector5 External-monitor connector6 Modem connector7 Ethern

Bottom view1 Built-in stereo speakers2 Battery pack3 Battery pack latches4 Docking connector5 Mini PCI card slot6 DIMM7 PC card slots8

Parts listT20, T21, T22 and T23 series modelmatrixThe T20, T21, T22 and T23 series includes severalmodels. The following table summarizes the characte

Safety notice 5If the LCD breaks and the fluid from inside the LCDgets into your eyes or on your hands, immediatelywash the affected areas with water

Model CPU BaydeviceMini PCIadapterLCD HDDT21 (Memory: 128 MB)2647-27x, 67x CMG750CD-ROMModem 13.3-in.XGA10 GB2647-2Ax, 6Ax Combo(Xircom)2647-4Bx, 8Bx

Model CPU BaydeviceMini PCIadapterLCD HDDT23 (Memory: 128 MB) (**): Memory 256 MB2647-2Kx except2KC2647-6Kx exceptxxC2647-AKx, BAx,BJx, EKxTual866CD-R

Model CPU BaydeviceMini PCIadapterLCD HDDT23 (Memory: 128 MB) (**): Memory 256 MB2647-5Mx, 9Mx Tual1.2CD-RWModem 14.1-in.SXGA+48 GB2647-5Nx, 9Nx,HNx,

OverallFor T20, T21 and T221ab2345769 81011121514kl16191817202122232413cdefgjhiParts listThinkPad T20, T21, T22 and T23 series 147

v Each FRU is available for all types or models, unlessspecific types or models are given.v The FRUs marked with asterisk are CRUs (customerreplaceabl

No. FRU P/N7 Base cover for T22for 2647-3xx, 7xx, Bxx except models xxK 26P9291for 2647-3xK, 7xK, BxK 26P9309for 2647-4xx, 5xx, 8xx, 9xx, Mxx, Lxxexce

No. FRU P/N15 Mini PCI modem card OPfor T20 (models x1x except T1U, x2x, x3x,BxG)08K3429*Mini PCI modem card (Ambit)for T20, T21 (models x1x, x2x, x

No. FRU P/N18 Asset ID RF adapter (see “Optional FRUs” on page 170)19 Hard-disk drive (6.0 GB), STD OP 05K9227*Hard-disk drive (6.0 GB), HITACHI OP

For T231a2345769 8101112152414ij161918k172021222313echfg25bdParts list152 ThinkPad T20, T21, T22, T23 (MT 2647/2648)

v Each FRU is available for all types or models, unlessspecific types or models are given.v The FRUs marked with one asterisk are CRUs(customer replac

Safety notice 6DANGERTo avoid shock, do not remove the plastic coverthat protects the lower part of the inverter card.Afin d’éviter tout risque de cho

No. FRU P/N7 Base cover for 2648 wireless (T23)for models xNx, xSx, except xNC, xNK,xNT, xSC, xSK, xST46L4921for models 4NC, 8NC, xSC 46L4935for model

No. FRU P/N12 Cover, Mini PCI adapter slot 08K7416*13 Speaker assembly 08K608914 128-MB SDRAM SO DIMM (PC133) OP 19K4653*256-MB SDRAM SO DIMM (PC133

No. FRU P/N24 Ethernet daughter card (Ambit) OPfor all models except 2647-xQx26P818125 Secure chip OPfor 2647-5xx except 5Kx, 9xx except 9Kxfor 26

LCD FRUs754432156Notes:1. The parts marked with  are only for 13.3-in. LCDcover kit.2. 5 is for the models with 14.1-in. XGA TFT with antennaand for

14.1-in. XGA TFTNo. FRU P/N1 LCD cover kit (14.1-in.) XGAfor T20, T21 (except models xxK) 26P9566for T20, T21 (models xxK) 26P9567for T22, T23 (except

14.1-in. SXGA+ TFTNo. FRU P/N1 LCD cover kit (14.1-in.) SXGA+ (exceptmodels xxK)26P9383models xxK 26P9385LCD cover antenna kit (except models xxK) 46L

KeyboardLanguage P/N (NMB) P/N(ALPS)Arabic 02K5750* —Belgian 02K5745* —Chinese, traditional 02K5747* 02K5718*Czech 02K5751* —Danish 02K5738* —Dutch 02

Recovery CDsFor Windows 98 (T22 series)Language P/NArabic 14P9515*Chinese, Simplified 27P2112*Chinese, Traditional 27P2110*Czech 14P9516*Danish 23P924

For Windows 2000 (T22 series)Language P/NArabic 14P9525*Czech 14P9526*Greek 23P9218*Hebrew 14P9527*Hungarian 23P9219*Polish 14P9528*Russian 23P9220*Sl

For Windows 98 (T23 series)Language P/NArabic 14P9202*Arabic (modem enabled) 14P9201*Chinese, Simplified 46P4518*Chinese, Traditional 46P4514*Chinese,

Safety notice 7DANGERThough the main batteries have low voltage, ashorted or grounded battery can produce enoughcurrent to burn personnel or combustib

For Windows 2000 (T23 series)Language P/NArabic 32P6633*Chinese, Simplified 46P4520*Chinese, Traditional 46P4516*Chinese, Traditional (Hong Kong S.A.R

For Windows 2000/Windows NT (T23 series)Language P/NDanish 14P9291*Dutch 14P9298*English, U.K. 32P5645*English, U.S. 32P5576*French, Canadian 14P9288*

For Windows XP (T23 series)Language P/NArabic 32P6736*Chinese, Simplified 46L6288*Chinese, Traditional 46L6287*Chinese, Traditional (Hong Kong S.A.R.)

Miscellaneous partsItalicized letters in parentheses are reference to theexploded view on page 147 and 152.FRU P/NScrew kit (including nylon-coated sc

FRU P/NSystem miscellaneous parts for T20 series:v (a) Hinge cover assemblyv (23) Easy button coverv (i) I/O card spacerv (h) Cable RJ11 to system boa

FRU P/NSystem miscellaneous parts for T23 series:v (a) Hinge cover assemblyv (23) Easy button cover T23v (g) I/O card spacerv (f) Cable RJ11 to system

FRU P/NSystem board miscellaneous parts for T23 series:v System board studv System board stud (long)v System board stud (back)v Insulator, PC cardv In

FRU P/NUltrabay 2000 SuperDisk drive (LS120) 05K9235*Ultrabay 2000 SuperDisk drive (LS120 2x) 27L3450*Ultrabay 2000 SuperDisk drive (LS240) 08K9615*Ul

Common parts listToolsTriconnector wrap plug 72X8546PC test card 35G4703Audio wrap cable 66G5180USB parallel test cable 05K2580Screwdriver kit 95F3598

Power cords (docking station)IBM power cords for a specific country or region areusually available only in that country or region:For 3-pin power cord

Safety notice 8DANGERBefore removing any FRU, power off the computer,unplug all power cords from electrical outlets,remove the battery pack, and then

NoticesReferences in this publication to IBM products, programs,or services do not imply that IBM intends to make theseavailable in all countries in w

NoticesThinkPad T20, T21, T22 and T23 series 175

Part Number: 62P9631(1P) P/N: 62P9631

Safety informationThe following section presents the safety information thatyou need to be familiar with before servicing an IBMmobile computer.Genera

NoteBefore using this information and the product itsupports, be sure to read the general informationunder “Notices” on page 174.First Edition (April

v After service, reinstall all safety shields, guards, labels,and ground wires. Replace any safety device that isworn or defective.v Reinstall all cov

– When using testers, set the controls correctly anduse the approved probe leads and accessories forthat tester.– Stand on suitable rubber mats (obtai

If any unsafe conditions are present, you must determinehow serious the apparent hazard could be and whetheryou can continue without first correcting

damage by equalizing the charge so that the machine, thepart, the work mat, and the person handling the part are allat the same charge.Notes1. Use pro

Laser compliance statementSome IBM Personal Computer models are equipped fromthe factory with an optical storage device such as aCD-ROM drive or a DVD

When a CD-ROM drive, DVD drive or the other laserproduct is installed, note the following:CAUTION:Opening the CD-ROM drive, DVD-ROM drive or the other

Some CD-ROM drives, DVD-ROM drives, or other opticalstorage devices contain an embedded Class 3A or Class3B laser diode. Note the following:DANGEREmit

General descriptionsThis chapter includes descriptions for any ThinkPad modelthat has the PC-Doctor DOS diagnostics program. Somedescriptions might no

__ 4. Date of purchase__ 5. Failure symptoms, error codes appearing on thedisplay, and beep symptoms__ 6. Procedure index and page number in which the

Related service informationThis section provides information about the following:v “Service web site”v “Restoring the preloaded system”v “Passwords” o

About this manualThis manual contains service and reference information forIBM ThinkPad T20, T21, T22, T23 (MT2647, 2648), andThinkPad Dock (MT2631) p

2. At the prompt, press F11. (The option to press F11appears for only a few seconds. You must press F11quickly.) The Product Recovery program main men

Note: Network drivers are not automatically restoredwith Windows NT 4.0; you will need to reinstallthem.Note: If you use Windows 2000 or Windows 98,re

v To preload the hard-disk drive without installing theservice partition, press N key.8. If you get a message asking which operating systemto install,

Attention: If the user HDP has been forgotten, checkwhether a master HDP has been set. If it has, it can beused for access to the hard-disk drive. If

8. Press F10; then, in the Setup confirmation window,select Yes .How to remove the hard-disk passwordAttention: If User only mode is selected and the

v The hard-disk drive motor stops.3. If the time set on the “Turn off monitor” timer in theoperating system expires,v The LCD backlight turns off.To e

v Turn on the power switch.Also, the computer automatically returns from standbymode and resumes operation in either of the followingevents:v The ring

v If you are using the ACPI operating system and havedefined one of the following actions as the event thatcauses the system to go into hibernation mo

Checkout guideUse the following procedures as a guide in identifying andcorrecting problems with the ThinkPad computer.Note: The diagnostic tests are

If an error code appears, go to “Symptom-to-FRUindex” on page 49.On the first screen, select the model and press Enter.Follow the instructions on the

iv ThinkPad T20, T21, T22, T23 (MT 2647/2648)

DiagnosticsQuitInteractive TestsHardware InfoUtility F1=HelpRun Quick TestRun Normal TestSystemboardCPU/CoprocessorVideo AdapterSerial PortsDiskette D

Power system checkoutTo verify a symptom, do the following:1. Power off the computer.2. Remove the battery pack.3. Connect the ac adapter.4. Check tha

Checking operational chargingTo check whether the battery charges properly duringoperation, use a discharged battery pack or a battery packthat has le

Note: Recharging will take at least 3 hours, even if theindicator does not turn on.If the voltage is still less than +11.0 V dc afterrecharging, repla

Checkout guide38 ThinkPad T20, T21, T22, T23 (MT 2647/2648)

ThinkPad T20, T21, T22 and T23seriesProduct overview ...41Specifications ...43Status indicators ...45FRU Tests ...

1160 Hard-disk bay ...1051170 Ultrabay 2000 slot ...107For T20 series ...107For T21 and T22 series...108For T23 series ...

Product overviewThis section presents the following product-uniqueinformation:v “Specifications”v “Status indicators” on page 44v “FRU Tests” on page

Feature DescriptionMemory(optional)T20, T21, T22v 64 MB, 128 MB, or 256 MB DIMM card(maximum of 512 MB)T23v 64 MB, 128 MB, 256 MB, or 512 MB DIMMcard

Feature DescriptionInternalmodem56.6 KbpsAudio v Internal microphonev Internal speakerv Software control volumeInfraredtransferIrDA 1.1802.11b (onlyfo

ContentsAbout this manual ...iiiIntroduction ...1Important service information ...1Strategy for replacing FRUs ...1How to

Status indicatorsThe system status indicators show the status of thecomputer, as follows:1 2 3 4 56 7 8Indicator Meaning1 Drive in use Green: Data i

Indicator Meaning4 Scroll lock Green: Scroll Lock mode is enabled. Arrowkeys can be used as screen-scrollfunction keys, but not to move thecursor. T

FRU TestsThe following table shows the test for each FRU.FRU Applicable testSystem board 1. Diagnostics --> CPU/Coprocessor2. Diagnostics --> Sy

FRU Applicable testDiskette drive 1. Diagnostics --> Diskette Drives2. Interactive Tests --> DisketteCD-ROM, DVD,CD-RW orCD-RW/DVDcombo drive1.

Fn key combinationsThe following table shows the function of each combinationof Fn with a function key.KeycombinationDescriptionFn+F1 Reserved.Fn+F2 R

Symptom-to-FRU indexThe symptom-to-FRU index in this section lists symptomsand errors and their possible causes. The most likelycause is listed first,

Symptom or error FRU or action, in sequence0193RF antenna has been removedEnter the supervisorpassword.0194The computer has been carriedthrough a secu

Symptom or error FRU or action, in sequence0232Extended RAMerror—Extended RAM fails atoffset nnnn.1. DIMM.2. System board.0250System battery error—Sys

Error messagesSymptom or error FRU or action, in sequenceDevice address conflict. 1. Load “Setup Defaults” inIBM BIOS Setup Utility.2. Backup battery.

Beep symptomsSymptom or error FRU or action, in sequenceOne beep and a blank,unreadable, or flashing LCD.1. Reseat the LCDconnector.2. LCD assembly.3.

1030 Hard-disk drive ...631040 DIMM ...651050 Mini PCI adapter ...661060 Ethernet daughter card ...711070 Ultrabay 2000 devi

LCD-related symptomsImportantThe TFT LCD for the notebook computer containsmany thin-film transistors (TFTs). A small number ofdots that are missing,

Intermittent problemsIntermittent system hang problems can be due to a varietyof causes that have nothing to do with a hardware defect,such as cosmic

FRU replacement noticesThis section contains notices related to removing andreplacing parts. Read this section carefully before replacingany FRU.Screw

v Make sure you use the correct screw. If you have atorque screwdriver, tighten all screws firmly to the torqueshown in the table. Never use a screw t

and stored in the EEPROM of your system board. Thealgorithm that generates the number is designed to provideunique IDs until the year A.D. 3400. No tw

Removing and replacing a FRUThis section presents directions and drawings for use inremoving and replacing a FRU. Be sure to observe thefollowing gene

1010 Battery packDANGER12Use only the battery in the parts listing for yourcomputer. Use of an incorrect battery can result inignition or explosion of

1020 Backup batteryDANGERFor access, remove this FRU:v “1010 Battery pack” on page 6012Step Screw (quantity) Torque1 M2.5 × 3.5 mm, (1) 0.392 Nm(4 k

Cable routing: When attaching the backup battery to theholder, route the battery cable as in thefollowing figure.Removing and replacing a FRU62 ThinkP

1030 Hard-disk driveAttentionDo not drop or apply any shock to the hard-diskdrive. The hard-disk drive is sensitive to physicalshock. Incorrect handli

IntroductionImportant service informationImportantBIOS and device driver fixes arecustomer-installable. The BIOS and device driversare posted on the I

When removing the hard-disk drive, open the LCD a littleas shown in the figure.2334When installing: Make sure that the HDD connector isfirmly connecte

1040 DIMMFor access, remove this FRU:v “1010 Battery pack” on page 60Note: Loosen the screw 1, but do not remove it.21334When installing: With the n

1050 Mini PCI adapterFor access, remove this FRU:v “1010 Battery pack” on page 60For T20, T21 and T22 seriesNote: Loosen the screw 1, but do not rem

Note: The following illustration shows the combo card.Connector (A) is for the LAN feature and (B) is forthe modem feature. Disconnect either (A) or (

When installing: Make sure not to pinch the connectorcable when re-installing the Mini PCIadapter.For T23 seriesNote: Loosen the screw 1, but do not

In step 3a and 3b, pull the tab of the each antennacables to unplug the cables.43a43bWhen installing: Plug the gray antenna cable 3a intojack J1

1060 Ethernet daughter cardNoteThis section is only for the following models of T23series;v All models of MT2647 excepting xQx, L4xv All models of MT2

33Step Screw (quantity) Torque3 M2.5 × 11.5 mm, nylon-coated (2) 0.392 Nm(4 kgfcm)(continued)Removing and replacing a FRUThinkPad T20, T21, T22 and

456When installing: Make sure that both of the connectors4 and 6 are firmly attached.Removing and replacing a FRU72 ThinkPad T20, T21, T22, T23 (M

1070 Ultrabay 2000 deviceAny of several devices can be inserted into the Ultrabay2000. The procedure for installing and removing is thesame for every

Strategy for replacing a hard-disk driveAlways try to run a low-level format before replacing ahard-disk drive.Attention: The drive startup sequence i

1080 KeyboardFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive” on pag

For T23 seriesNote: Loosen the screw 2, but do not remove it.321Step Screw (quantity) Torque1 M2.5 × 14 mm, nylon-coated (2) 0.392 Nm(4 kgfcm)4Ste

Note: Step 5 to 10 are common for all models.556(continued)Removing and replacing a FRU76 ThinkPad T20, T21, T22, T23 (MT 2647/2648)

987789109(continued)Removing and replacing a FRUThinkPad T20, T21, T22 and T23 series 77

Note: Before installing a new keyboard, attach theeasy-button cover as follows:11234(continued)Removing and replacing a FRU78 ThinkPad T20, T21, T22,

When installing the keyboard, do as follows:1. Install the new keyboard, following the directions in thefigure. Make sure that the keyboard edges, sho

2. Insert your fingers into the PC Card slot on the left ofthe computer and the Ultrabay 2000 slot on the right ofthe computer as shown in 1 . Then,

3. To make sure that the front side of the keyboard ishoused firmly, gently press the shift keys with yourthumbs and try to slide the keyboard towards

1090 Keyboard CRU insulatorFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk

1100 Hinge coverFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive” on

Safety notices: multilingual translationsIn this manual, safety notices appear in English with apage number reference to the appropriate multilingual,

For T20 and T21 seriesa a342Step Screw (quantity) Torque2 M2.5 × 4.8 mm, nylon-coated (1) 0.392 Nm(4 kgfcm)When installing:1. Install the hinge cove

For T22 series23Step Screw (quantity) Torque2 M2.5 × 14 mm, nylon-coated (1) 0.392 Nm(4 kgfcm)(continued)Removing and replacing a FRUThinkPad T20, T

6aa54Step Screw (quantity) Torque4 M2.5 × 4.8 mm, nylon-coated (1) 0.392 Nm(4 kgfcm)When installing:1. Install the hinge cover according to the step

For T23 series432aaStep Screw (quantity) Torque2 M2.5 × 4.8 mm, nylon-coated (1) 0.392 Nm(4 kgfcm)When installing:1. Install the hinge cover accordi

1110 Keyboard bezelFor access, remove these FRUs, in order:v “1010 Battery pack” on page 60v “1020 Backup battery” on page 61v “1030 Hard-disk drive”

423Step Screw (quantity) Torque2 M2.5 × 14 mm, nylon-coated (1) 0.392 Nm(4 kgfcm)3 M2.5 × 4.8 mm, nylon-coated (1) 0.392 Nm(4 kgfcm)(continued)Rem

For T23 seriesNote: Loosen the screw 1, but do not remove it.213Step Screw (quantity) Torque3 M2.5 × 11.5 mm, nylon-coated (1) 0.392 Nm(4 kgfcm)(c

4Step Screw (quantity) Torque4 M2.5 × 3.5 mm, nylon-coated (3) 0.392 Nm(4 kgfcm)(continued)Removing and replacing a FRUThinkPad T20, T21, T22 and T2

576Step Screw (quantity) Torque5 M2.5 × 14 mm, nylon-coated (1) 0.392 Nm(4 kgfcm)6 M2.5 × 4.8 mm, nylon-coated (1) 0.392 Nm(4 kgfcm)Removing and r

When installing, do as follows:v Make sure that the a-part is firmly attached as shownin the figure.v Make sure that all of the latches of the keybo