IBM 2611-40A Hardware Maintenance Manual Download Page 78 | Manualshive

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Processor EMI Bracket and Processor
Board

“Battery Assembly” on page 60

“Keyboard” on page 63

“Processor Heatsink” on page 69

Attention: The processor board is ESD-sensitive and can
be damaged easily, especially the pins around the
processor chip. When replacing the processor board, press
the processor board's edges. DO NOT touch the pins of
the processor.

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ThinkPad i Series 1400 HMM

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Summary of Contents for 2611-40A

Page 1: ...S10L 9952 02 IBM Mobile Systems ThinkPad i Series 1400 2611 Hardware Maintenance Manual August 1999 ...

Page 2: ...disclaimers or express or implied warranties in certain transactions there fore this statement may not apply to you This publication could include technical inaccuracies or typographical errors Changes are periodically made to the information herein these changes will be incorporated in new editions of the publication IBM may make improve ments or changes in the products or the programs described ...

Page 3: ...611 412 2611 476 2611 456 2611 40M 2611 40A 2611 49M 2611 43M 2611 40T 2611 49A 2611 43A 2611 40C 2611 49T 2611 43T 2611 40H 2611 49C 2611 43C 2611 40K 2611 49H 2611 43H 2611 40F 2611 49K 2611 43K 2611 49F 2611 47F Important This manual is intended for trained servicers who are familiar with ThinkPad products Use this manual along with the advanced diagnostic tests to trouble shoot problems effect...

Page 4: ...0 GA21 1000 ThinkPad 365 2625 Advanced Diagnostics Diskette 76H7578 S30H 2498 ThinkPad 380 385 2635 Mainte nance Diskette 06J0333 S06J 0333 ThinkPad 500 2603 Advanced Diagnostics Diskette 71G3702 S71G 3702 ThinkPad 510 2604 Advanced Diagnostics Diskette 83G8095 S83G 8095 ThinkPad 700 9552 Reference Diskette 42G2017 S42G 2017 ThinkPad 700C 9552 Refer ence Diskette 42G2023 S42G 2023 ThinkPad 720 720...

Page 5: ... How to Use Error Messages 20 How to Diagnose Mulitple FRUs 20 What to Do First 20 Screw Notices 22 Power On and Setup Password 23 Check Procedures 24 Power Systems Check 25 System Board Check 27 Memory Check 27 Keyboard and External Input Device Check 28 Audio Function Check 29 TrackPoint IV Check 29 Diskette Drive Check 30 CD ROM Drive Check 30 Modem Board Check 31 BIOS Utility 32 Navigating the...

Page 6: ...nd HDD Heatsink 65 Hard Disk Drive 66 PCMCIA Holder 67 TrackPoint Board 68 Processor Heatsink 69 Processor EMI Bracket and Processor Board 70 RTC Battery Backup Battery 71 LCD Assembly 72 Upper Cover Keyboard Bezel 73 CD Control Card 75 Modem Connector RJ11 Cable Assembly 76 DC DC Charger 77 Audio Cable and Speaker Cable 78 Audio PCB 79 Fan Assembly 80 Audio Connection Board 81 Diskette and CD ROM...

Page 7: ...anking Mode 120 Standby Mode 120 Hibernation Mode 121 Symptom to FRU Index 122 Numeric Error Codes and Messages 122 Beep Symptoms 124 No Beep Symptoms 124 Keyboard TrackPoint Related Symptoms 125 LCD Related Symptoms 125 Indicator Related Symptoms 128 Power Related Symptoms 128 Memory Related Symptoms 128 Audio Related Symptoms 129 PC Card PCMCIA Related Symptoms 129 Power Management Related Sympt...

Page 8: ...udio Connector Board and S Video PCB 158 Audio Cable and Speaker Cable 159 Audio PCB 161 Fan Assembly 162 Diskette and CD ROM DVD ROM Drives Assembly 163 System Board 166 LCD Front Cover 12 1 inch 167 LCD Front Cover 14 1 inch 172 Locations 178 Front View 178 Bottom View 179 Rear View 179 Switch Locations 180 System Unit Parts Listing 181 LCD Unit Parts Listing 186 12 1 LCD Unit Parts Listing 186 ...

Page 9: ...ed in this manual Use the following strategy to prevent unnecessary FRU replacement and service expense If you are instructed to replace a FRU and that does not correct the problem reinstall the original FRU before you continue Some computers have both a processor board and a system board If you are instructed to replace either the processor board or the system board and the first board that you r...

Page 10: ...f the first error code can result in false error codes being displayed If no error code is displayed see if the error symptom is listed in the Symptom to FRU Index for the computer you are servicing How to Read POST Error Messages POST error messages are displayed on the screen as three four five or eight digits The error messages that can be displayed as shorter POST messages are high lighted in ...

Page 11: ...skette drives Note A 360KB diskette written to or formatted on a 1 2MB drive can be read reliably only on a 1 2MB drive Diskette Drive Identifying Mark 3 5 Inch 1 44MB 1 44 on the eject button 3 5 Inch 2 88MB 2 88 on the eject button Diskette Capacity 1 44MB Drive 2 88MB Drive 1 0MB Read Write Read Write 2 0MB Read Write Read Write 4 0MB Not Compatible Read Write Diskette Drive Identifying Mark 5 ...

Page 12: ...ient causer un court circuit Bevor nach einem FRU Austausch der Computer wieder angeschlossen wird muΒ sichergestellt werden daΒ keine Schrauben Federn oder andere Kleinteile fehlen oder im Gehäuse vergessen wurden Der Computer muΒ geschüttelt und auf Klappergeräusche gepr ft werden Metallteile oder splitter können Kurzschlüsse erzeugen Prima di accendere l elaboratore dopo che é stata effettuata ...

Page 13: ...aufgeladen kurzgeschlossen oder Feuer oder Wasser ausgesetzt werden Die Batterie kann schwere Verbrennungen oder Verätzungen verursachen Bei der Entsorgung die örtlichen Bestimmungen f r 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 f...

Page 14: ...sser ausgesetzt werden Bei der Entsorgung die örtlichen Bestimmungen f r 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 La batteria contiene piccole quantità di nichel Non smontarla gettarla nel fuoco o nell acqua né cortocircuitarla Smaltirla secondo l...

Page 15: ...egt über 100 C erhitzt oder verbrannt werden Auch darf ihr Inhalt nicht mit Wasser in Verbindung gebracht oder der zur richtigen Polung angebrachte Verbindungsstecker entfernt werden 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 Entzün...

Page 16: ...n zerbrechen wenn er unsachgemäΒ behandelt wird oder der Computer auf den Boden fällt Wenn der Bildschirm beschädigt ist und die darin befindliche Flüssigkeit in Kontakt mit Haut und Augen gerät sollten die betroffenen Stellen mindestens 15 Minuten mit Wasser abgespült und bei Beschwerden anschlieΒend ein Arzt aufgesucht werden Nel caso che caso l LCD si dovesse rompere ed il liquido in esso conte...

Page 17: ...urn combustible materials or personnel Bien que le voltage des batteries principales soit peu élevé le court circuit ou la mise à la masse d une batterie peut produire suffisamment de courant pour brûler des matériaux combustibles ou causer des brûlures corporelles graves Obwohl Hauptbatterien eine niedrige Spannung haben können sie doch bei KurzschluΒ oder Erdung genug Strom abgeben um brennbare ...

Page 18: ... d interface Die Stromzufuhr muΒ abgeschaltet alle Stromkabel aus der Steckdose gezogen der Akku entfernt und alle Verbindungskabel abgenommen sein bevor eine FRU entfernt wird Prima di rimuovere qualsiasi FRU spegnere il sistema scollegare dalle prese elettriche tutti i cavi di alimentazione rimuovere la batteria e poi scollegare i cavi di interconnessione Antes de quitar una FRU apague el sistem...

Page 19: ...at other service representatives and the customer s personnel are not in a hazardous position Place removed covers and other parts in a safe place away from all personnel while you are ser vicing the machine Keep your tool case away from walk areas so that other people will not trip over it Do not wear loose clothing that can be trapped in the moving parts of a machine Ensure that your sleeves are...

Page 20: ...oltages Disconnect all power before Performing a mechanical inspection Working near power supplies Removing or installing main units Before you start to work on the machine unplug the power cord If you cannot unplug it ask the customer to power off the wall box that supplies power to the machine and to lock the wall box in the off position If you need to work on a machine that has exposed electric...

Page 21: ...machine damage Do not service the following parts with the power on when they are removed from their normal operating places in a machine Power supply units Pumps Blowers and fans Motor generators and similar units This practice ensures correct grounding of the units If an electrical accident occurs Use caution do not become a victim your self Switch off power Send another person to get medical ai...

Page 22: ...type as specified in the parts listings c 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 condi tions such as metal filings contamination water or other liquids or signs of fire or smoke damage 7 Check for worn frayed or pinched cables 8 ...

Page 23: ...rface The mat is especially useful when handling ESD sensitive devices Select a grounding system such as those listed below to provide protection that meets the specific service requirement Note The use of a grounding system is desirable but not required to protect against ESD damage Attach the ESD ground clip to any frame ground ground braid or green wire ground Use an ESD common ground or refere...

Page 24: ...ing CAUTION Use of controls or adjustments or performance of pro cedures other than those specified herein might result in hazardous radiation exposure O uso de controles ajustes ou desempenho de procedimentos diferentes daqueles aqui especificados pode resultar em perigosa exposição à radiação Pour éviter tout risque d exposition au rayon laser respectez les consignes de réglage et d utilisation ...

Page 25: ... evite exposição direta com o feixe de luz Rayonnement laser si carter ouvert Évitez de fixer le faisceau de le regarder directement avec des instru ments optiques ou de vous exposer au rayon Laserstrahlung bei geöffnetem Gerät Nicht direkt oder über optische Instrumente in den Laserstrahl sehen und den Strahlungsbereich meiden Kinyitáskor lézersugár Ne nézzen bele se szabad szemmel se optikai esz...

Page 26: ...18 ThinkPad i Series 1400 HMM ...

Page 27: ...re Maintenance Manual Part I Part I of this Hardware Maintenance Manual covers the fol lowing ThinkPad i Series 1400 computer models 2611 410 2611 411 2611 434 2611 435 2611 436 JP 2611 450 2611 451 ThinkPad i Series 1400 Part I 19 ...

Page 28: ...ware defect such as cosmic radiation electrostatic discharge or software error FRU replacement should be considered only when a recurring problem exists In this case clear the error log and run the test again Do not replace FRUs if log errors do not reap pear Be careful not to replace a non defective FRU How to Use Error Messages Use the error codes displayed on the screen to diagnose failures If ...

Page 29: ...ected to stresses beyond normal use The following is not covered under warranty LCD panel cracked by applying excessive force or by being dropped Scratched cosmetic parts Cracked or broken plastic parts broken latches broken pins or broken connectors caused by exces sive force Damage caused by liquid spilled into the system Damage caused by improperly inserting a PCMCIA card or installation of an ...

Page 30: ...ty problem The IBM ThinkPad computer addresses this problem with nylon coated screws Tighten screws as follows Plastic to plastic Turn an additional 90 degrees after the screw head touches the surface of the plastic part Logic card to plastic Turn an additional 180 degrees after the screw head touches the surface of the plastic part Torque driver If you have a torque driver refer to the Torque col...

Page 31: ...o the left ON position is bypass password the right OFF position is check password Refer to Switch Locations on page 95 5 Plug in the AC adapter and turn on the system 6 While the ThinkPad logo is being displayed wait for a beep before pressing F1 to enter the BIOS Utility 7 Select System Security from the BIOS Utility main menu and press Enter 8 Set the Power On Password setting to None to clear ...

Page 32: ...ies 1400 Utility Diskette P N 01K4842 1 Obtain the failing symptoms in as much detail as pos sible 2 Verify the symptoms by attempting to recreate the failure by running the diagnostic test or by repeating the same operation 3 Use the following table with the verified symptom to determine which page to go to Search the symptoms column and find the description that best matches your symptom then go...

Page 33: ...ppropriate power supply check listed below Checking the AC Adapter Checking the Operational Charging on page 26 Checking the Battery Pack on page 26 Checking the AC Adapter If the computer fails only when the AC Adapter is used or if the power on indi cator of the AC Adapter does not turn on make sure of the following Power cord is not damaged Power cord is securely connected to the AC Adapter and...

Page 34: ...apter does not always indicate a defective adapter Checking the Operational Charging To check operational charging 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 1 If the battery indicator does not turn on remove the battery pack and leave it to return to room temper ature 2 Reinstall th...

Page 35: ...agnostics diskette and start the PQA program please refer to Running the PQA Diagnos tics Program on page 49 2 Run the System Board test to verify the symptom This test verifies both the system board and the processor board If the tests detect a system board problem replace the system board Note Don t touch the keyboard and pointing device when the system board test is running This may cause an un...

Page 36: ...external keyboard is attached remove it if the internal keyboard has to be tested If the internal keyboard does not work or an unexpected character appears make sure that the flexible cable extending from the keyboard is correctly seated in the con nector on the TrackPoint board If the tests do not detect a keyboard problem run the Key board test by doing the following 1 Boot from the diagnostics ...

Page 37: ...nnections Replace the Audio I O board Replace the Audio and Battery Function Con nection Board Replace the system board TrackPoint IV Check The TrackPoint does automatic compensations to adjust the pointer sensor During this process the pointer moves on the screen automatically for a short time This self acting pointer movement can occur when a slight steady pressure is applied to the TrackPoint p...

Page 38: ...om the diagnostics diskette and start the PQA program please refer to Running the PQA Diagnos tics Program on page 49 2 Go to Diag and select Manual Test then choose Diskette Drive from the Test Item and press F2 to execute If an error occurs with the internal diskette drive reconnect the connector on the system board If the error still remains 1 Reconnect the diskette drive cable 2 Replace the di...

Page 39: ... the system internal modem 1 Boot from the diagnostics diskette and start the PQA program please refer to Running the PQA Diagnos tics Program on page 49 2 Follow the instructions on the screen to complete the test If an error occurs with the internal modem do the following 1 Change another telephone line and test again 2 Re plug the telephone connector 3 Reconnect the modem board 4 Replace the mo...

Page 40: ...to run the BIOS Utility The BIOS Utility has the following functions Change the system date or time Set the power saving modes and timers Set change or remove a system password Change the system boot drive or display device Add or remove serial and parallel devices Set the video display features While the ThinkPad logo is being displayed wait for a beep before pressing F1 to enter the BIOS Utility...

Page 41: ...d sets the values for these parameters Press the up or down arrow keys to move from one parameter to another Press the left or right arrow keys to change parameter settings You have to change some settings when you add a component to the computer Most of the parameters are self explanatory To exit a main menu item press Esc When you press Esc to exit the BIOS Utility from the main menu screen the ...

Page 42: ...nt menu of the BIOS Utility is set to Enabled The system keyboard mouse hard disk drive par allel connector or diskette drive etc is idle for a certain period of time The battery power is critically low The Sleep upon Battery low in the Power Management menu of the BIOS Utility is set to Enabled Sleep Manager is not installed and the hibernation file is not present or invalid Note Before entering ...

Page 43: ...y mode if Battery low Warning Beep in the Power Management menu of the BIOS Utility is set to Enabled four short beeps will be issued every minute for three minutes The system keyboard mouse hard disk drive par allel connector or diskette drive etc is idle for a certain period of time Note The computer cannot enter hibernation mode when the computer is using a communication or I O PC Card Events t...

Page 44: ...e available use narrative symptoms If the symptom is not listed go to Undetermined Problems on page 45 Note For any IBM device not supported by the diagnostic codes in this ThinkPad computer see the manual for that device Numeric Error Codes and Messages Error Code Message FRU Action in Sequence POST 010 Memory Error at MMMM SSSS OOOOh R xxxxh W xxxxh Go to Memory Check on page 27 DIMM System boar...

Page 45: ... Detection Failed Ensure the hard disk drive is set to Auto in the Basic System Set tings menu of the BIOS Utility Hard disk connection board Hard disk drive System board 070 Real Time Clock Error Reset time in the Basic System Set tings menu of the BIOS Utility Backup battery RTC battery System board 071 CMOS Battery Bad Enter BIOS Utility and execute Load Setup Default Settings Backup battery RT...

Page 46: ...y and execute Load Setup Default Settings then reboot the system Remove the non factory installed adapter card and reboot the system Beep Symptoms Symptom Error FRU Action in Sequence Five short beeps power on indicator turns on then off and LCD is blank Ensure that System Boot Drive in the System Secu rity menu of the BIOS Utility is not set to Drive A Battery Four short beeps every minute and sy...

Page 47: ...Ensure every connector is connected tightly and cor rectly Charger board Battery pack AC Adapter System board No beep power on indicator turns on and LCD is blank Power source battery and adapter See Power Systems Check on page 25 Reconnect the LCD connector Charger board Processor board Reconnect the DIMM System board No beep power on indicator turns on and LCD is blank But you can see POST on an...

Page 48: ...eyboard cables TrackPoint board Keyboard System board LCD Related Symptoms LCD FRU Replacement Notice The TFT LCD for the notebook computer contains over 2 359 296 thin film transistors TFTs A small number of missing discolored or lighted dots on all the time is characteristic of TFT LCD technology but excessive pixel problems can cause viewing concerns The LCD should be replaced if the number of ...

Page 49: ...djusted Enter BIOS Utility and execute Load Setup Default Settings then reboot the system Reconnect the LCD connec tors Keyboard if contrast and brightness function keys do not work LCD inverter ID LCD LVDS board for 13 3 inch LCD LCD FPC cable LCD inverter LCD System board Unreadable LCD screen Missing pels in char acters Abnormal screen Wrong color dis played Reconnect all LCD connec tors LCD in...

Page 50: ...er on Go to Power Systems Check on page 25 AC Adapter Charger board System board The system doesn t power off Go to Power Systems Check on page 25 Hold and press the power switch for more than 4 seconds Charger board System board Battery can t be charged Go to Power Systems Check on page 25 Battery pack Charger board System board Memory Related Symptoms Symptom Error FRU Action in Sequence Memory ...

Page 51: ...slot pin is damaged PC Card PCMCIA slots assembly Power Management Related Symptoms Symptom Error FRU Action in Sequence The system doesn t enter hibernation mode and four short beeps every minute are heard Go to Hibernation Mode on page 35 Boot an operating system and press Fn F12 to see if the computer enters hibernation mode TrackPoint board Keyboard Hard disk connection board Hard disk drive S...

Page 52: ...ve connector Fan go to Running the PQA Diagnostics Program on page 49 System board Peripheral Device Related Symptom Symptom Error FRU Action in Sequence External display does not work correctly Press Fn F3 LCD CRT Both display switching System board Printer problems Run printer self test Printer driver Printer cable Ensure that Parallel Port in the Onboard Devices Config uration menu of the BIOS ...

Page 53: ...roblems The diagnostic tests did not identify which adapter or device failed which installed devices are incorrect whether a short circuit is suspected or whether the system is inop erative Follow the procedures below to isolate the failing FRU Verify that the power supply being used at the time of the failure is operating correctly 1 Power off the computer 2 Check the cables wires and connectors ...

Page 54: ...lem remains replace the following FRUs one at a time Do not replace a non defective FRU TrackPoint board Charger board Audio battery function connection board LCD assembly System board 46 ThinkPad i Series 1400 HMM ...

Page 55: ...s required for the fol lowing conditions New versions of system programs New features or options are added To update the flash memory do the following 1 Get the appropriate diskette containing the update 2 Insert the System Program Service Diskette into diskette drive A and power on the computer 3 Select Update system programs from the menu Status Indicators The system status LED indicators show t...

Page 56: ...he keyboard is enabled You enable or disable the keypad by pressing and holding the Shift key and pressing the NumLk key For details see the User s Refer ence 5 Caps lock Green Caps Lock mode is enabled All alphabetic characters A Z are entered in capital letters without the Shift key being pressed You enable or disable the Caps Lock mode by pressing the Caps Lock key 6 Scroll lock Green Scroll Lo...

Page 57: ...raseable 2HD diskette Parallel Wrap plug P N 72X8546 Parallel test cable P N 05K2580 Serial Wrap plug P N 72X8546 Screwdriver Kit P N 95F3598 Screwdriver Kit P N 05K4693 Torque Screwdriver P N 05K4695 5mm Socket Wrench P N 05K4694 PCMCIA PC test card P N 35G4703 CD ROM Any data and audio CDs ThinkPad i Series 1400 Diagnostics Diskette P N 01K4841 ThinkPad i Series 1400 Utility Diskette P N 01K4842...

Page 58: ... times The following screen appears when you select Diag from the main menu This screen allow syou to specify the number of tests to perform The options are as follows Manual Test performs a single test and manually checks the selected test items in sequence Auto Test performs multiple tests and auto checks the selected test items in sequence The screen below appears if you select Auto Test 50 Thi...

Page 59: ...ble or disable the item The mark indicates that there are avail able sub options Press Enter to view the available sub options of each selected item Press Esc to close the submenu The right corner screen information gives you the available function keys and the specified test number Space enables disables the item Esc exits the program F1 accesses help F2 tests the selected item s Enter opens the ...

Page 60: ...d 2XXX Memory error Reconnect Processor board DIMM System board 3XXX Keyboard error Reconnect key board Keyboard System board 4XXX Video error System board 5XXX Parallel port error System board 6XXX Serial port or system board error System board 7XXX Diskette drive error Diskette drive System board 8XXX Hard disk error Load BIOS default setting Hard disk con nection board Hard disk drive 9XXX CD R...

Page 61: ... the LED still does not turn on and the test fails go to PC Card PCMCIA Related Symptoms on page 43 to replace the possible defective FRU Running Audio and Speaker out Test Boot from the Diagnostic Program Diskette and select Running Audio Resource and Speaker Out Test from PC DOS 7 0 Startup Menu Follow the instructions on the screen to execute the audio test If the test fails go to Audio Func ti...

Page 62: ...the current ID Code or to set a new inverter ID code Note When you set a new inverter ID and the new LCD is not yet enabled to function connect an external CRT to see the program execution process Attention Make sure that the new ID code you choose corresponds to the LCD brand and type If you write a wrong ID into the inverter just reboot and re execute the program and input the correct ID code 4 ...

Page 63: ...key combinations and their corresponding functions The Fn key works independently of the operating system The operating system obtains the status through the system management interface to control the system Fn Result F1 The ShortCut Keys Utility program appears The ShortCut Keys Utility defines all Fn key functions as well as ShortCut keys that can be customized F2 The Power Management Properties...

Page 64: ...olors 800x600 pixel TFT color SVGA LCD or 13 3 inch 256 colors 1024x768 pixel TFT color XGA LCD Audio Internal system buzzer Internal speakers and microphone Internal line in microphone in headphone jack Diskette drive 1 44MB 3 mode 3 5 inch Hard disk drive 3GB 4GB or 5GB 2 5 inch E IDE interface CD ROM drive 5 25 inch 20X or 24X speed E IDE interface PC Card PCMCIA One Type III or two Type II Car...

Page 65: ...U replacement make sure all screws springs or other small parts are in place and are not left loose inside the computer Verify this by shaking the com puter and listening for rattling sounds Metallic parts or metal flakes can cause electrical shorts Safety Notice 3 Translations in Safety Notices Multi lingual Trans lations section The battery pack contains small amounts of nickel Do not disassembl...

Page 66: ...grounding by touching a ground point with one hand before touching these units An electrostatic discharge ESD strap P N 6405959 must be used to establish personal grounding 58 ThinkPad i Series 1400 HMM ...

Page 67: ...lock the connector by pulling up the two clasps on both sides of the connector with a plastic stick Then carefully pull out the cable from the connector Plugging the Cable To plug the cable back first make sure that the connector is unlocked then plug the cable into the connector With a plastic stick press the two clasps on both sides of the connector to secure the cable in place Illustration Size...

Page 68: ...Battery Assembly Reverse the steps described above when installing a new battery pack 60 ThinkPad i Series 1400 HMM ...

Page 69: ...ket insert the DIMM at an angle of approximately 20 into the socket then press it firmly Pivot the DIMM until it snaps into place Side View Step Size Quantity Head Color Torque Memo 1 M2 x 5L 2 Bind head black 1 6 kgf cm Note The screw cannot be separated from the DIMM door ThinkPad i Series 1400 Part I 61 ...

Page 70: ... latches on both sides of the modem board 3 then pull out the modem board 4 Then discon nect the modem cable 5 Step Size Quantity Head Color Torque Memo 1 M2 x 5L 2 Bind head black 1 6kgf cm Note The screws do not separate from the modem board cover 62 ThinkPad i Series 1400 HMM ...

Page 71: ... Note Be careful not to scratch the surface of the name plate cover Step Size Quantity Head Color Torque Memo 3 M2 x 4L 2 Pan head silver 2 0 kgf cm Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part I 63 ...

Page 72: ...ct with the bottom of the connector Now press down on the latch of the connector to secure Note If the cables do not touch the bottom of the con nector the keyboard function will be rendered useless Attention The cables of the keyboard are fragile and could be damage Be careful in pulling out the cables 64 ThinkPad i Series 1400 HMM ...

Page 73: ...Battery Assembly on page 60 Keyboard on page 63 Step Size Quantity Head Color Torque Memo 1 M2 5 x 6L 3 Bind head black 3 2 kgf cm w nylok paste Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part I 65 ...

Page 74: ... be removed when pulled straight up CAUTION Do not apply any shock to the hard disk drive The hard disk drive is sensitive to physical shock Incor rect handling can cause damage and permanent loss of data on the hard disk Before removing the hard disk drive the user must have a backup copy of all the information on the hard disk drive Never remove the hard disk drive while the system is operating ...

Page 75: ... Heatsink on page 65 Note Before removing and replacing the PCMCIA holder make sure that the PCMCIA cards are removed and the eject levers are not sticking out Step Size Quantity Head Color Torque Memo 1 M2 x 14L 4 Pan head silver 1 6 kgf cm Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part I 67 ...

Page 76: ...ulled straight up TrackPoint Board Battery Assembly on page 60 Keyboard on page 63 Hard Disk Drive and HDD Heatsink on page 65 Step Size Quantity Head Color Torque Memo 2 M2 5 x 6L 1 Bind head black 3 2 kgf cm Note Make sure you use the correct screw for replacement 68 ThinkPad i Series 1400 HMM ...

Page 77: ... Battery Assembly on page 60 Keyboard on page 63 Step Size Quantity Head Color Torque Memo 1 M2 x 14L 4 Pan head silver 1 6 kgf cm Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part I 69 ...

Page 78: ...63 Processor Heatsink on page 69 Attention The processor board is ESD sensitive and can be damaged easily especially the pins around the processor chip When replacing the processor board press the processor board s edges DO NOT touch the pins of the processor 70 ThinkPad i Series 1400 HMM ...

Page 79: ...zed connector disas semble it heat it above 100 C 212 F incinerate it or expose its cell contents to water Dispose of the battery as required by local ordinances or regu lations Use of an incorrect battery can result in ignition or explosion of the battery Replacement batteries can be ordered from IBM or IBM Author ized Dealers Battery Assembly on page 60 Keyboard on page 63 Processor Heatsink on ...

Page 80: ...y installed as shown at 7 Step Size Quantity Head Color Torque Memo 2 M2 5 x 13 5L 2 Pan head black 4 5 kgf cm w nylok paste Note Make sure you use the correct screw for replacement Step Size Quantity Head Color Torque Memo 5 M2 x 14L 2 Pan head silver 1 6 kgf cm Note Make sure you use the correct screw for replacement 72 ThinkPad i Series 1400 HMM ...

Page 81: ...Disk Drive and HDD Heatsink on page 65 Processor Heatsink on page 69 LCD Assembly on page 72 Step Size Quantity Head Color Torque Memo 1 M2 5 x 13 5L 5 Pan head black 2 5 kgf cm w nylok paste Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part I 73 ...

Page 82: ...eral latches When removing the upper cover from the base cover gently release these latches then raise the side of the upper cover facing the palm rest to remove it Be careful not to break the latches 74 ThinkPad i Series 1400 HMM ...

Page 83: ...HDD Heatsink on page 65 Processor Heatsink on page 69 LCD Assembly on page 72 Upper Cover Keyboard Bezel on page 73 Step Size Quantity Head Color Torque Memo 1 M2 x 4L 2 Pan head silver 1 6 kgf cm Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part I 75 ...

Page 84: ...ge 62 Keyboard on page 63 Hard Disk Drive and HDD Heatsink on page 65 Processor Heatsink on page 69 LCD Assembly on page 72 Upper Cover Keyboard Bezel on page 73 Note Before removing the modem phone jack make sure that the other end has been disconnected from the modem board 76 ThinkPad i Series 1400 HMM ...

Page 85: ...Battery Assembly on page 60 Keyboard on page 63 Hard Disk Drive and HDD Heatsink on page 65 Processor Heatsink on page 69 LCD Assembly on page 72 Upper Cover Keyboard Bezel on page 73 ThinkPad i Series 1400 Part I 77 ...

Page 86: ... end is connected to the Audio PCB underneath the palm rest You then align the cable fol lowing the border of the chassis and connect it to the inverter cable as shown in the diagram Step Size Quantity Head Color Torque Memo 3 M2 5 x 6L Bind head black 1 6 kgf cm w ground ring 4 M2 5 x 6L Bind head black 1 6 kgf cm w nylok paste Removing the audio cable 1 2 3 4 5 Removing the speaker cable 6 7 Not...

Page 87: ...k on page 65 Processor Heatsink on page 69 LCD Assembly on page 72 Upper Cover Keyboard Bezel on page 73 Step Size Quantity Head Color Torque Memo 1 M2 5 x 6L 2 Bind head black 3 2 kgf cm w nylok paste Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part I 79 ...

Page 88: ...tsink on page 69 LCD Assembly on page 72 Upper Cover Keyboard Bezel on page 73 Step Size Quantity Head Color Torque Memo 2 M2 5 x 6L 2 Bind head black 1 6 kgf cm w nylok paste 4 M2 5 x 3 5L 2 Bind head black 1 6 kgf cm w nylok paste Note Make sure you use the correct screw for replacement 80 ThinkPad i Series 1400 HMM ...

Page 89: ...bly on page 72 Upper Cover Keyboard Bezel on page 73 Attention When removing the Audio Connection Board pull it up at an angle It cannot removed when pulled straight up Step Size Quantity Head Color Torque Memo 1 M2 5 x 6L 2 Bind head black 3 2 kgf cm w nylok paste Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part I 81 ...

Page 90: ...er Keyboard Bezel on page 73 Attention You must pull out the CD tray before removing the Diskette and CD ROM Drives Assembly Use a small stick to press the CD ROM drive emergency eject hole to open the CD tray Step Size Quantity Head Color Torque Memo 2 M2 5 x 6L 2 Bind head black 3 2 kgf cm w nylok paste Note Make sure you use the correct screw for replacement 82 ThinkPad i Series 1400 HMM ...

Page 91: ...ents or performing procedures other than those specified may result in hazardous radiation exposure Do not apply any extra force to the CD ROM drive when removing it Step Size Quantity Head Color Torque Memo 5 M2 x 4L 3 Pan head silver 1 2 kgf cm Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part I 83 ...

Page 92: ...tte Drive with Bezel Step Size Quantity Head Color Torque Memo 9 M2 5 x 3 5L 4 Bind head black 1 6 kgf cm w nylok paste Note Make sure you use the correct screw for replacement 84 ThinkPad i Series 1400 HMM ...

Page 93: ...se cover gently raise the side of the system board facing the rear I O ports then pull out the system board 2 When replacing the system board align the power switch and power actuator Make sure that the power switch operates correctly before securing the screws Step Size Quantity Head Color Torque Memo 1 M2 5 x 6L 2 Bind head black 3 2 kgf cm w nylok paste Note Make sure you use the correct screw ...

Page 94: ...to scratch the LCD cover when removing the screw covers 2 The LCD front cover has several latches Release these latches then remove the LCD cover Be careful not to break these latches 3 Gently push the two hooks 3 outward to remove the LCD front cover Step Size Quantity Head Color Torque Memo 1 M2 5 x 6L 3 Bind head black 1 6 kgf cm w nylok paste Note Make sure you use the correct screw for replac...

Page 95: ...Heatsink on page 65 Processor Heatsink on page 69 LCD Assembly on page 72 Upper Cover Keyboard Bezel on page 73 Step Size Quantity Head Color Torque Memo 1 M2 x 4L 4 Pan head silver 1 6 kgf cm Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part I 87 ...

Page 96: ...D Assembly on page 72 Upper Cover Keyboard Bezel on page 73 Attention After you replace the LCD or inverter follow the instructions in Writing the VPD Data on page 55 Step Size Quantity Head Color Torque Memo 1 M2 x 4L 2 Pan head silver 2 0 kgf cm Note Make sure you use the correct screw for replacement 88 ThinkPad i Series 1400 HMM ...

Page 97: ...page 69 LCD Assembly on page 72 Upper Cover Keyboard Bezel on page 73 Note There are tape adhesive attached to the micro phone cable assembly Do not forget to put them back when reinstalling Step Size Quantity Head Color Torque Memo 2 M2 x 4L 2 Pan head silver 2 0 kgf cm Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part I 89 ...

Page 98: ...ve and HDD Heatsink on page 65 Processor Heatsink on page 69 LCD Assembly on page 72 Step Size Quantity Head Color Torque Memo 1 M2 5 x 6L 2 Bind head black 3 2 kgf cm w nylok paste Note Make sure you use the correct screw for replacement 90 ThinkPad i Series 1400 HMM ...

Page 99: ...embly on page 72 Upper Cover Keyboard Bezel on page 73 Attention After you replace the LCD or inverter follow the instructions in Setting the Inverter ID on page 54 13 3 inch LCD Unit Step Size Quantity Head Color Torque Memo 2 M3 x 5L 4 Bind head black 3 2 kgf cm Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part I 91 ...

Page 100: ...Step Size Quantity Head Color Torque Memo 1 M3 x 3 5L 4 Bind head silver 1 6 kgf cm Note Make sure you use the correct screw for replacement 92 ThinkPad i Series 1400 HMM ...

Page 101: ...or 10 Diskette eject button 11 CD ROM drive 12 CD ROM eject button 13 CD ROM drive activity indicator 14 CD ROM drive emergency eject hole 15 CD ROM audio control panel 16 CD ROM previous track button 17 CD ROM next track button 18 CD ROM status LCD 19 CD ROM play pause button 20 CD ROM stop eject button 21 CD ROM power switch 22 TrackPoint buttons ThinkPad i Series 1400 Part I 93 ...

Page 102: ...ot door Rear View 1 Power jack 2 External input device PS 2 connector 3 Serial connector 4 Parallel connector 5 Expansion connector 6 External monitor connector 7 Universal serial bus USB connector 8 Security keyhole 9 Power switch 10 Line out headphone jack 11 Line in jack 94 ThinkPad i Series 1400 HMM ...

Page 103: ... processor voltage and speed The processor board can sense the correct working voltage and speed itself Password SW2 Switch 2 Setting Keyboard Language SW2 Switch 3 and 4 Setting Un configured Switches Password Bypass Check Switch 2 On Off Keyboard Language Japanese U S European Switch 3 On Off Off Switch 4 Off Off On Reserved Default Settings SW1 Switch 1 Off SW1 Switch 2 Off SW2 Switch 1 Off Thi...

Page 104: ...System Unit Parts Listing 96 ThinkPad i Series 1400 HMM ...

Page 105: ...3 System board 10L1175 1 System board 10L1272 1 14 Audio PCB 10L1172 1 15 RJ11 cable assembly 05K2803 1 16 DIMM 32MB 10L1226 1 DIMM 64MB 10L1227 1 17 DIMM cover 05K5951 1 18 Modem cover 05K5952 1 19 Modem 10L1176 1 Modem 10L1274 1 20 Battery assy NiMH 02K6526 1 21 Bottom base 05K5684 1 21 1 Leg L R 05K5953 1 22 Fan assembly 05K5683 1 23 Audio connector board 10L1173 1 24 RTC battery 11J8591 1 25 P...

Page 106: ...eyboard Traditional Chinese 02K4741 1 Keyboard Danish 02K4742 1 Keyboard France 02K4743 1 Keyboard Korea 02K4745 1 Keyboard UK 02K4748 1 Keyboard Belgian 02K4750 1 Keyboard Swiss 02K4751 1 Keyboard Portuguese 02K4752 1 Keyboard Canadian French 02K4744 1 Keyboard Norwegian 02K4747 1 Keyboard Swedish Finnish 02K4746 1 Keyboard Dutch 02K4740 1 AC Adapter 2 pin inlet 12J0538 1 AC Adapter 3 pin inlet 1...

Page 107: ...LCD Unit Parts Listing 12 1 LCD Unit Parts Listing ThinkPad i Series 1400 Part I 99 ...

Page 108: ...L 05K5669 1 3 1 Hinge cover R L 05K5949 1 4 12 1 TFT LCD 05K9383 1 5 FPC 12 1 ASSY 05K2795 1 6 LCD inverter 12 1 10L1151 1 7 LED BD 10L1168 1 8 LCD rear cover asm 12 1 TFT 05K5672 1 9 Cable Assembly 05K2798 1 LG IBM Logo kit 05K6044 1 10 LCD FPC Holder kit 27L6477 1 100 ThinkPad i Series 1400 HMM ...

Page 109: ...13 3 LCD Unit Parts Listing ThinkPad i Series 1400 Part I 101 ...

Page 110: ... 4 13 3 TFT LCD 05K9372 1 5 FPC 13 3 ASSY 05K2797 1 6 LCD inverter 13 3 10L1167 1 7 LED BD 10L1168 1 8 LCD rear cover asm 13 3 TFT 05K5673 1 9 13 3 TFT bracket R L 05K5670 1 10 Cable Assembly 05K2798 1 11 LVDS Cover 05K5960 1 12 LVDS board 10L1174 1 LG IBM Logo kit 05K6044 1 13 LCD FPC Holder kit 27L6477 1 102 ThinkPad i Series 1400 HMM ...

Page 111: ... LCD latch spring LCD latch L R Battery door Battery pack latch knob CD player power knob CD player panel 05K5686 Service Tools Description FRU No Qty Diagnostic Diskette 01K4841 CE Utility Diskette 01K4842 Tri Connector Wrap Plug 72X8546 PC Test Card 35G4703 Audio Wrap Cable 66G5180 Screwdriver Kit 95F3598 USB Parallel Test Cable 05K2580 Torque Screwdriver 05K4695 5mm Socket Wrench 05K4694 Screwd...

Page 112: ...rlands Norway Poland Portugal Romania Slovakia Spain Sweden Turkey former Yugoslavia 76H3518 1 Power cord Denmark 76H3520 1 Power cord Bangladesh Pakistan South Africa Sri Lanka 76H3522 1 Power cord Thailand 76H4866 1 Power cord Abu Dhabi Albania Antigua Bahrain Brunei Dubai Fiji Hong Kong India Ireland Kenya Kuwait Macao Malaysia Nigeria Oman People s Republic of China Qatar Singapore United King...

Page 113: ...ollowing ThinkPad i Series 1400 computer models 2611 40A 2611 40C 2611 40F 2611 40H 2611 40K 2611 40M 2611 40T 2611 412 2611 43A 2611 43C 2611 43H 2611 43K 2611 43M 2611 43T 2611 452 2611 456 2611 472 2611 476 2611 47F 2611 49A 2611 49C 2611 49F 2611 49H 2611 49K 2611 49M 2611 49T ThinkPad i Series 1400 Part II 105 ...

Page 114: ...ware defect such as cosmic radiation electrostatic discharge or software error FRU replacement should be considered only when a recurring problem exists In this case clear the error log and run the test again Do not replace FRUs if log errors do not reap pear Be careful not to replace a non defective FRU How to Use Error Messages Use the error codes displayed on the screen to diagnose failures If ...

Page 115: ...cted to stresses beyond normal use The following is not covered under warranty LCD panel cracked by applying excessive force or by being dropped Scratched cosmetic parts Cracked or broken plastic parts broken latches broken pins or broken connectors caused by exces sive force Damage caused by liquid spilled into the system Damage caused by improperly inserting a PCMCIA card or installation of an i...

Page 116: ...y problem The IBM ThinkPad computer addresses this problem with nylon coated screws Tighten screws as follows Plastic to plastic Turn an additional 90 degrees after the screw head touches the surface of the plastic part Logic card to plastic Turn an additional 180 degrees after the screw head touches the surface of the plastic part Torque driver If you have a torque driver refer to the Torque colu...

Page 117: ...position is bypass pass word the OFF position is check password Refer to Switch Locations on page 180 5 Plug in the AC adapter and turn on the system 6 While the ThinkPad logo is being displayed wait for a beep before pressing F1 to enter the BIOS Utility 7 Select System Security from the BIOS Utility main menu and press Enter 8 Set the Power On Password setting to None to clear the password 9 Sav...

Page 118: ... i Series 1400 Maintenance Diskette P N 09N1025 1 Obtain the failing symptoms in as much detail as pos sible 2 Verify the symptoms by attempting to recreate the failure by running the diagnostic test or by repeating the same operation 3 Use the following table with the verified symptom to determine which page to go to Search the symptoms column and find the description that best matches your sympt...

Page 119: ...ropriate power supply check listed below Checking the AC Adapter Checking the Operational Charging on page 112 Checking the Battery Pack on page 112 Checking the AC Adapter If the computer fails only when the AC Adapter is used or if the power on indi cator of the AC Adapter does not turn on make sure of the following Power cord is not damaged Power cord is securely connected to the AC Adapter and...

Page 120: ...apter does not always indicate a defective adapter Checking the Operational Charging To check operational charging 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 1 If the battery indicator does not turn on remove the battery pack and leave it to return to room temper ature 2 Reinstall th...

Page 121: ...diskette and start the PC Doctor program please refer to Running the PC Doctor Diagnostics Program on page 135 2 Run the System Board test to verify the symptom This test verifies both the system board If the tests detect a system board problem replace the system board Note Don t touch the keyboard and pointing device when the system board system board test is running This may cause an unexpected ...

Page 122: ...ote If an external keyboard is attached remove it if the internal keyboard has to be tested If the internal keyboard does not work or an unexpected character appears make sure that the flexible cable extending from the keyboard is correctly seated in the con nector on the TrackPoint board If the tests do not detect a keyboard problem run the key board test by doing the following 1 Boot from the di...

Page 123: ...ackPoint IV Check If the external mouse is connected the TrackPoint does not work In this case please detach the external mouse to check the TrackPoint If this does not correct the TrackPoint problem continue with the following Note After you use the TrackPoint the pointer drifts on the screen for a short time This self acting pointer movement can occur when a slight steady pres sure is applied to...

Page 124: ... Running the PC Doctor Diagnostics Program on page 135 2 Select Diagnostics 3 Select Diskette Drives 4 Follow the instructions in the message window If an error occurs with the internal diskette drive reconnect the connector on the system board If the error still remains 1 Reconnect the diskette drive cable 2 Replace the diskette drive cable 3 Replace the diskette drive 4 Replace the system board ...

Page 125: ...the diagnostics diskette and start the PC Doctor program please refer to Running the PC Doctor Diagnostics Program on page 135 2 Select Diagnostics 3 Select Other Devices 4 Select Modem Loopback Test and Modem Dialtone DTMF Test 5 Follow the instructions in the message window If an error occurs with the internal modem do the following 1 Change another telephone line and test again 2 Re plug the te...

Page 126: ...hange or remove a system password Change the system boot drive or display device Add or remove serial and parallel devices Set the video display features While the ThinkPad logo is being displayed wait for a beep before pressing F1 to enter the BIOS Utility The main screen displays as shown below BIOS Utility System Information Basic System Settings Startup Configuration Onboard Devices Configurat...

Page 127: ...meters Press the up or down arrow keys to move from one parameter to another Press the left or right arrow keys to change parameter settings You have to change some settings when you add a component to the computer Most of the parameters are self explanatory To exit a main menu item press Esc When you press Esc to exit the BIOS Utility from the main menu screen the following prompt appears Select ...

Page 128: ...gement menu of the BIOS Utility is set to Enabled The system keyboard mouse hard disk drive par allel connector or diskette drive etc is idle for a certain period of time The battery power is critically low The Sleep upon Battery low in the Power Management menu of the BIOS Utility is set to Enabled Sleep Manager is not installed and the hibernation file is not present or invalid Note Before enter...

Page 129: ... mode if Battery low Warning Beep in the Power Management menu of the BIOS Utility is set to Enabled four short beeps will be issued every minute for three minutes The system keyboard mouse hard disk drive par allel connector or diskette drive etc is idle for a certain period of time Note The computer cannot enter hibernation mode when the computer is using a communication or I O PC Card Events th...

Page 130: ...available use narrative symptoms If the symptom is not listed go to Undetermined Problems on page 131 Note For any IBM device not supported by the diagnostic codes in this ThinkPad computer see the manual for that device Numeric Error Codes and Messages Error Code Message FRU Action in Sequence POST 010 Memory Error at MMMM SSSS OOOOh R xxxxh W xxxxh Go to Memory Check on page 113 DIMM System boar...

Page 131: ...ings Backup battery RTC battery System board 072 CMOS Checksum Error Enter BIOS Utility and execute Load Setup Default Settings then reboot the system Backup battery RTC battery System board 006 Equipment Configuration Error Ensure the equipment diskette drive hard disk drive keyboard external mouse etc is connected properly and is correctly set in the BIOS Utility Hard disk connection board Hard ...

Page 132: ...em Secu rity menu of the BIOS Utility is not set to Drive A Ensure the diskette drive con figuration in the Basic System Settings menu of the BIOS Utility is not set cor rectly Diskette drive cable Diskette drive Hard disk connection board Hard disk drive System board No beep power on indicator turns off and LCD is blank Power source battery and adapter See Power Systems Check on page 111 Ensure e...

Page 133: ... and cor rectly System board No beep during POST but system runs correctly Adjust the audio volume control Speaker connector System board Note The buzzer is on the system board Keyboard TrackPoint Related Symptoms Symptom Error FRU Action in Sequence Keyboard one or more keys doesn t work Go to Keyboard and External Input Device Check on page 114 Reconnect keyboard cables Keyboard System board Tra...

Page 134: ... 9 or more bright and dark dots Symptom Error FRU Action in Sequence No beep power on indicator turns on and LCD is blank Power source battery and adapter See Power Systems Check on page 111 Reconnect the LCD connector DC DC charger Hard disk drive LCD inverter ID LCD LVDS board for 14 1 inch LCD LCD FPC cable Inverter LCD System board LCD backlight doesn t work LCD is too dark LCD brightness cann...

Page 135: ... acters Abnormal screen Wrong color dis played Reconnect all LCD connec tors LCD inverter ID LCD FPC cable LCD inverter LCD System board LCD has extra hori zontal or vertical lines displayed LCD LCD FPC cable LCD inverter ID Inverter System board ThinkPad i Series 1400 Part II 127 ...

Page 136: ... Go to Power Systems Check on page 111 AC Adapter DC DC charger System board The system doesn t power off Go to Power Systems Check on page 111 Hold and press the power switch for more than 4 seconds DC DC charger System board Battery can t be charged Go to Power Systems Check on page 111 Battery pack DC DC charger System board Memory Related Symptoms Symptom Error FRU Action in Sequence Memory co...

Page 137: ...slot pin is damaged PC Card PCMCIA slots assembly Power Management Related Symptoms Symptom Error FRU Action in Sequence The system doesn t enter hibernation mode and four short beeps every minute are heard Go to Hibernation Mode on page 121 Boot an operating system and press Fn F12 to see if the computer enters hibernation mode TrackPoint board Keyboard Hard disk connection board Hard disk drive ...

Page 138: ...ttently Hard disk diskette CD ROM DVD ROM drive connector Fan System board Peripheral Device Related Symptoms Symptom Error FRU Action in Sequence External display does not work correctly Press Fn F9 LCD CRT Both display switching System board Printer problems Run printer self test Printer driver Printer cable Ensure that Parallel Port in the Onboard Devices Config uration menu of the BIOS Utility...

Page 139: ...mined Problems The diagnostic tests did not identify which adapter or device failed which installed devices are incorrect whether a short circuit is suspected or whether the system is inop erative Follow the procedures below to isolate the failing FRU Verify that the power supply being used at the time of the failure is operating correctly 1 Power off the computer 2 Check the cables wires and conn...

Page 140: ...7 If the problem remains replace the following FRUs one at a time Do not replace a non defective FRU TrackPoint board DC DC charger Audio PCB LCD assembly System board 132 ThinkPad i Series 1400 HMM ...

Page 141: ...te is required for the fol lowing conditions New versions of system programs New features or options are added To update the flash memory do the following 1 Get the appropriate diskette containing the update 2 Insert the System Program Service Diskette into diskette drive A and power on the computer 3 Select Update system programs from the menu Status Indicators The system status LED indicators sh...

Page 142: ...n the keyboard is enabled You enable or disable the keypad by pressing and holding the Shift key and pressing the NumLk key For details see the User s Refer ence 5 Caps lock Green Caps Lock mode is enabled All alphabetic characters A Z are entered in capital letters without the Shift key being pressed You enable or disable the Caps Lock mode by pressing the Caps Lock key 6 Scroll lock Green Scroll...

Page 143: ...K4693 Torque screwdriver P N 05K4695 5mm socket wrench P N 05K4694 Running the PC Doctor Diagnostics Program To run PC Doctor 1 Shutdown the computer 2 Insert the PC Doctor for DOS diskette 1 into the diskette drive 3 Turn on the computer 4 Select the correct model name and test type while the PC DOS Startup Menu is shown on the screen Generic PC Doctor DOS Testing ThinkPad 240 Series ThinkPad 390...

Page 144: ...structions on the screen Setting the LCD Panel ID There is an EEPROM in the inverter which store its supported LCD type and ID code If you replace the LCD with one of a different brand the ID information in the inverter EEPROM should be updated Follow the steps below to set the LCD inverter ID 1 Boot from the Maintenance Program Diskette 2 Select Panel ID Diagnostic from PC DOS 7 0 Startup Menu 3 ...

Page 145: ...d to reset the thermal sensor threshold Follow the steps below to set the thermal threshold 1 Boot from the Maintenance Program Diskette 2 Select Thermal Sensor Utility from PC DOS 7 0 Startup menu 3 Follow the instructions on the screen to set the thresholds Writing the VPD Data The EEPROM on the system board contains the vital product data VPD that is a system unit serial number and a system boa...

Page 146: ...tility defines all Fn key functions as well as ShortCut keys that can be customized F2 The Power Management Properties window appears F3 The computer blanks the screen to save power F4 The computer enters standby mode F5 F8 These are customizable ShortCut Keys Use the ShortCut Keys Utility Fn F1 to choose pro grams or files to launch with the customized ShortCut key F9 The display output location ...

Page 147: ...024x768 pixel TFT color XGA LCD External monitor VGA connector and TV out S video jack optional Audio Internal system buzzer Internal speakers and microphone Internal line in microphone in headphone jack Diskette drive 1 44MB 3 mode 3 5 inch Hard disk drive 4 8GB or 6 4GB 2 5 inch E IDE interface CD ROM DVD ROM drive 5 25 inch 24X speed E IDE inter face CD ROM drive or 5 25 inch 2X speed E IDE int...

Page 148: ...t make sure all screws springs or other small parts are in place and are not left loose inside the computer Verify this by shaking the computer and lis tening for rattling sounds Metallic parts or metal flakes can cause electrical short circuits Safety Notice 3 The battery pack contains small amounts nickel Do not disassemble it throw it into fire or water or short circuit it Dispose the battery p...

Page 149: ... pulling up the two clasps on both sides of the connector with a plastic stick Then carefully pull out the cable from the connector Plugging the Cable To plug the cable back first make sure that the connector is unlocked then plug the cable into the connector With a plastic stick press the two clasps on both sides of the connector to secure the cable in place Illustration Size Head Color M3 x 6L B...

Page 150: ...Battery Assembly 1 2 3 Reverse the steps described above when installing a new battery pack 142 ThinkPad i Series 1400 HMM ...

Page 151: ...t insert the DIMM at an angle of approximately 20 into the socket then press it firmly Pivot the DIMM until it snaps into place 1 2 Side View 1 2 Step Size Quan tity Head Color Torque Memo 1 M2 x 5L 2 Bind head black 1 6 kgf cm Note The screw cannot be separated from the DIMM door ThinkPad i Series 1400 Part II 143 ...

Page 152: ...dem cable 4 then press the release latches on both sides of the modem board 5 and pull out the modem board 6 5 6 4 Step Size Quan tity Head Color Torque Memo 2 M2 x 5L 2 Bind head black 1 6kgf cm Note The screws do not separate from the modem board cover 144 ThinkPad i Series 1400 HMM ...

Page 153: ... Note Be careful not to scratch the surface of the name plate cover 3 Step Size Quan tity Head Color Torque Memo 3 M2 x 4L 2 Pan head silver 1 6 kgf cm Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 145 ...

Page 154: ...contact with the bottom of the connector Now press down on the latch of the connector to secure Note If the cables do not touch the bottom of the con nector the keyboard function will be rendered useless Attention The cables of the keyboard are fragile and could be damage Be careful in pulling out the cables 146 ThinkPad i Series 1400 HMM ...

Page 155: ...2 4 3 Step Size Quan tity Head Color Torque Memo 1 M2 x 14L 3 Pan head silver 1 6 kgf cm 2 M2 5 x 6L 2 Bind head black 3 2 kgf cm w nylock paste 3 M2 5 x 8L 1 Pan head silver 3 2 kgf cm Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 147 ...

Page 156: ...ents to water Dispose of the battery as required by local ordiances or regulations Use of an incorrect battery can result in ignition or explosion of the battery Replacement batteries can be ordered from IBM or IBM authorized dealers Attention After removing the processor EMI shield 2 the processor is exposed The processor is ESD sensitive and can be damaged easily especially the pins around the P...

Page 157: ...ve is sensitive to physical shock Incor rect handling can cause damage and permanent loss of data on the hard disk Before removing the hard disk drive the user must have a backup copy of all the information on the hard disk drive Never remove the hard disk drive while the system is operating or is in hibernation mode ThinkPad i Series 1400 Part II 149 ...

Page 158: ... PCMCIA holder make sure that the PCMCIA cards are removed and the eject levers are not sticking out 3 2 Attention When removing the PCMCIA holder pull them up at an angle It cannot be removed when pulled straight up Step Size Quan tity Head Color Torque Memo 1 M2 x 14L 4 Pan head silver 1 6 kgf cm Note Make sure you use the correct screw for replacement 150 ThinkPad i Series 1400 HMM ...

Page 159: ...47 2 1 1 3 5 4 8 6 7 Note For 14 1 inch LCD models a LVDS board is addi tionally installed as shown at 3 Step Size Quan tity Head Color Torque Memo 2 M2 5 x 13 5L 2 Pan head black 3 5 kgf cm w nylock paste Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 151 ...

Page 160: ... Torque Memo 3 M2 x 14L 2 for 12 1 inch LCD assembly Pan head silver 1 6 kgf cm M2 x 20L 2 for 14 1 inch LCD assembly Pan head silver 1 6 kgf cm Note Make sure you use the correct screw for replacement 152 ThinkPad i Series 1400 HMM ...

Page 161: ...n page 147 RTC Battery Processor EMI Shield and Hard Disk Drive on page 148 LCD Assembly on page 151 1 4 3 2 5 Step Size Quan tity Head Color Torque Memo 1 M2 5 x 13 5L 5 Pan head black 3 2 kgf cm w nylock paste Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 153 ...

Page 162: ... these latches then raise the side of the upper cover facing the palm rest to remove it Be careful not to break the latches Step Size Quan tity Head Color Torque Memo 2 M2 5 x 6L 1 Pan head black 3 2 kgf cm w nylock paste Note Make sure you use the correct screw for replacement 154 ThinkPad i Series 1400 HMM ...

Page 163: ...attery Processor EMI Shield and Hard Disk Drive on page 148 LCD Assembly on page 151 Upper Cover Keyboard Bezel on page 153 2 1 3 5 6 4 Step Size Quan tity Head Color Torque Memo 1 M2 x 4L 2 Pan head silver 1 6 kgf cm Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 155 ...

Page 164: ...essor EMI Shield and Hard Disk Drive on page 148 LCD Assembly on page 151 Upper Cover Keyboard Bezel on page 153 Note Before removing the modem phone jack make sure that the other end has been disconnected from the modem board 3 4 1 2 Step Size Quan tity Head Color Torque Memo 3 M2 5 x 6L 1 Bind head black 3 2 kgf cm Note Make sure you use the correct screw for replacement 156 ThinkPad i Series 14...

Page 165: ...Battery Processor EMI Shield and Hard Disk Drive on page 148 LCD Assembly on page 151 Upper Cover Keyboard Bezel on page 153 2 1 3 Step Size Quan tity Head Color Torque Memo 1 M2 5 x 8L 1 Pan head silver 3 2 kgf cm Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 157 ...

Page 166: ... RTC Battery Processor EMI Shield and Hard Disk Drive on page 148 LCD Assembly on page 151 Upper Cover Keyboard Bezel on page 153 4 3 2 1 Step Size Quan tity Head Color Torque Memo 3 M2 5 x 6L 2 Bind head black 3 2 kgf cm w nylock paste Note Make sure you use the correct screw for replacement 158 ThinkPad i Series 1400 HMM ...

Page 167: ...rocessor EMI Shield and Hard Disk Drive on page 148 LCD Assembly on page 151 Upper Cover Keyboard Bezel on page 153 3 2 3 1 1 Step Size Quan tity Head Color Torque Memo 2 M2 5 x 6L 2 Bind head black 1 6 kgf cm w ground ring w nylock paste Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 159 ...

Page 168: ...erting the speaker cable one end is connected to the Audio PCB underneath the palm rest You then align the cable fol lowing the border of the chassis and connect it to the inverter cable as shown in the diagram 160 ThinkPad i Series 1400 HMM ...

Page 169: ...rocessor EMI Shield and Hard Disk Drive on page 148 LCD Assembly on page 151 Upper Cover Keyboard Bezel on page 153 2 1 Step Size Quan tity Head Color Torque Memo 1 M2 5 x 6L 2 Bind head black 3 2 kgf cm w nylock paste Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 161 ...

Page 170: ...rd Disk Drive on page 148 LCD Assembly on page 151 Upper Cover Keyboard Bezel on page 153 3 2 1 4 Step Size Quan tity Head Color Torque Memo 2 M2 5 x 6L 2 Bind head black 3 2 kgf cm w nylock paste 4 M2 5 x 4L 2 Bind head black 3 2 kgf cm w nylock paste Note Make sure you use the correct screw for replacement 162 ThinkPad i Series 1400 HMM ...

Page 171: ...Assembly on page 151 Upper Cover Keyboard Bezel on page 153 2 2 1 5 4 3 Attention You must pull out the CD DVD tray before removing the Diskette and CD ROM DVD ROM Drives Assembly Use a small stick to press the Step Size Quan tity Head Color Torque Memo 2 M2 5 x 6L 2 Bind head black 3 2 kgf cm w nylock paste Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 16...

Page 172: ...e parts inside The use of controls adjustments or performing procedures other than those specified may result in hazardous radiation exposure Do not apply any extra force to the CD ROM DVD ROM drive when removing it Step Size Quan tity Head Color Torque Memo 1 M2 x 4L 3 Pan head silver 1 6 kgf cm Note Make sure you use the correct screw for replacement 164 ThinkPad i Series 1400 HMM ...

Page 173: ...e with Bezel 6 4 5 7 4 Step Size Quan tity Head Color Torque Memo 4 M2 5 x 3 5L 4 Bind head black 1 6 kgf cm w nylock paste Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 165 ...

Page 174: ...em board from the base cover gently raise the side of the system board facing the rear I O ports then pull out the system board 2 When replacing the system board align the power switch and power actuator Make sure that the power switch operates correctly before securing the screws Step Size Quan tity Head Color Torque Memo 1 M2 5 x 6L 2 Bind head black 3 2 kgf cm w nylock paste Note Make sure you ...

Page 175: ... on page 148 LCD Assembly on page 151 1 2 3 4 3 Note When removing the LCD take note of the following 1 Be careful not to scratch the LCD cover when removing the screw covers Step Size Quan tity Head Color Torque Memo 1 M2 5 x 6L 3 Bind head black 1 6 kgf cm w nylock paste Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 167 ...

Page 176: ...rd Disk Drive on page 148 LCD Assembly on page 151 LCD Front Cover 12 1 inch on page 167 2 3 2 1 4 4 3 Indicator Board and Microphone Cable Assembly Battery Assembly on page 142 Keyboard on page 145 Processor Thermal Plate on page 147 RTC Battery Processor EMI Shield and Hard Disk Drive on page 148 LCD Assembly on page 151 LCD Front Cover 12 1 inch on page 167 Step Size Quan tity Head Color Torque...

Page 177: ...embly on page 142 Keyboard on page 145 Processor Thermal Plate on page 147 RTC Battery Processor EMI Shield and Hard Disk Drive on page 148 LCD Assembly on page 151 LCD Front Cover 12 1 inch on page 167 Step Size Quan tity Head Color Torque Memo 1 M2 x 4L 2 Pan head silver 2 0 kgf cm Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 169 ...

Page 178: ...he instructions in Setting the LCD Panel ID on page 136 Step Size Quan tity Head Color Torque Memo 1 M3 x 5L 2 LCD Bind head black 3 2 kgf cm M2 x 4L 2 Inverter Pan head silver 2 0 kgf cm Note Make sure you use the correct screw for replacement 170 ThinkPad i Series 1400 HMM ...

Page 179: ...cessor EMI Shield and Hard Disk Drive on page 148 LCD Assembly on page 151 LCD Front Cover 12 1 inch on page 167 2 2 1 Step Size Quan tity Head Color Torque Memo 1 M2 5 x 6L 2 Bind head black 3 2 kgf cm w nylock paste Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 171 ...

Page 180: ...ve on page 148 LCD Assembly on page 151 1 2 3 3 4 Note When removing the LCD take note of the following 1 Be careful not to scratch the LCD cover when removing the screw covers Step Size Quan tity Head Color Torque Memo 1 M2 5 x 6L 3 Bind head black 1 6 kgf cm w nylock paste Note Make sure you use the correct screw for replacement 172 ThinkPad i Series 1400 HMM ...

Page 181: ... Disk Drive on page 148 LCD Assembly on page 151 LCD Front Cover 12 1 inch on page 167 3 4 4 1 2 2 3 Indicator Board and Microphone Cable Assembly Battery Assembly on page 142 Keyboard on page 145 Processor Thermal Plate on page 147 RTC Battery Processor EMI Shield and Hard Disk Drive on page 148 LCD Assembly on page 151 LCD Front Cover 12 1 inch on page 167 Step Size Quan tity Head Color Torque M...

Page 182: ...ssembly on page 142 Keyboard on page 145 Processor Thermal Plate on page 147 RTC Battery Processor EMI Shield and Hard Disk Drive on page 148 LCD Assembly on page 151 LCD Front Cover 12 1 inch on page 167 Step Size Quan tity Head Color Torque Memo 1 M2 x 4L 2 Pan head silver 2 0 kgf cm Note Make sure you use the correct screw for replacement 174 ThinkPad i Series 1400 HMM ...

Page 183: ... instructions in Setting the LCD Panel ID on page 136 Step Size Quan tity Head Color Torque Memo 1 M3 x 5L 2 LCD Bind head black 3 2 kgf cm M2 x 4L 2 Inverter Pan head silver 2 0 kgf cm Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 175 ...

Page 184: ...2 2 1 Step Size Quan tity Head Color Torque Memo 1 M2 x 4L 4 Pan head silver 2 0 kgf cm Note Make sure you use the correct screw for replacement 176 ThinkPad i Series 1400 HMM ...

Page 185: ...cessor EMI Shield and Hard Disk Drive on page 148 LCD Assembly on page 151 LCD Front Cover 12 1 inch on page 167 1 2 2 Step Size Quan tity Head Color Torque Memo 1 M2 5 x 6L 2 Bind head black 3 2 kgf cm w nylock paste Note Make sure you use the correct screw for replacement ThinkPad i Series 1400 Part II 177 ...

Page 186: ...OM drive 12 CD ROM DVD ROM eject button 13 CD ROM DVD ROM drive activity indicator 14 CD ROM DVD ROM drive emergency eject hole 15 CD ROM DVD ROM audio control panel 16 CD ROM DVD ROM previous track button 17 CD ROM DVD ROM next track button 18 CD ROM DVD ROM status LCD 19 CD ROM DVD ROM play pause button 20 CD ROM DVD ROM stop eject button 21 CD ROM DVD ROM power switch 22 TrackPoint buttons 178 ...

Page 187: ...4 5 6 7 8 9 10 11 12 13 14 15 2 1 1 Power jack 2 Universal serial bus USB connector 3 External input device PS 2 connector 4 Serial connector 5 Parallel connector 6 Expansion connector 7 External monitor connector 8 Security keyhole 9 Power switch 10 Line out headphone jack 11 Line in jack ThinkPad i Series 1400 Part II 179 ...

Page 188: ...et these switches Keyboard Language SW3 Switch 1 2 and 3 Setting Password SW3 Switch 4 Setting Non configurable Switches SW4 Switch 1 and 2 Keyboard Language Japanese U S English European Switch 1 On Off Off Switch 2 Off Off On Switch 3 Off On Off Password Bypass Check Switch 4 On Off Reserved Default Settings Switch 1 Off Switch 2 On 180 ThinkPad i Series 1400 HMM ...

Page 189: ...System Unit Parts Listing 1 2 3 4 5 32 6 7 28 29 30 31 8 22 23 24 25 25 1 26 27 13 12 11 10 9 ThinkPad i Series 1400 Part II 181 ...

Page 190: ...21 1 21 20 19 18 14 15 16 17 182 ThinkPad i Series 1400 HMM ...

Page 191: ...1 24X CD ROM module LG 05K9165 1 24X CD ROM module Teac 2nd source 05K9140 1 13 System board asm Dixon 10L1285 1 System board asm Celeron w tv out 10L1341 1 System board asm Celeron w o tv out 10L1343 1 14 Audio PCB 10L1316 1 15 RJ11 PCI modem connector 22L1897 1 16 PCI modem Ambit 10L1296 1 PCI modem CIS 10L1329 1 17 Modem cover 05K5952 1 18 DIMM cover 05K5951 1 19 DIMM 32MB 10L1226 1 DIMM 64MB 1...

Page 192: ...ish 02K4742 1 Keyboard France 02K4743 1 Keyboard Korea 02K4745 1 Keyboard UK 02K4748 1 Keyboard Canadian French 02K4744 1 Keyboard Norwegian 02K4747 1 Keyboard Swedish Finnish 02K4746 1 Keyboard Dutch 02K4740 1 Keyboard Italy 02K6300 1 Keyboard EURO Spanish 02K4749 1 Keyboard Belgian 02K4750 1 Keyboard Swiss 02K4751 1 Keyboard Portuguese 02K4752 1 Keyboard API 1ST source Keyboard US 02K6368 1 Keyb...

Page 193: ...h Finnish 02K6374 1 Keyboard Dutch 02K6373 1 Keyboard Italy 02K6377 1 Keyboard EURO Spanish 02K6378 1 Keyboard Belgian 02K6379 1 Keyboard Swiss 02K6380 1 Keyboard Portuguese 02K6381 1 AC adapter 2 PIN 12J0538 1 AC adapter 3 PIN 12J0539 1 ThinkPad i Series 1400 Part II 185 ...

Page 194: ...LCD Unit Parts Listing 12 1 LCD Unit Parts Listing 2 1 3 1 3 4 9 5 1 7 5 6 8 186 ThinkPad i Series 1400 HMM ...

Page 195: ... TFT LCD HITACHI 05K9383 1 5 FPC 12 1 assy for Sanyo LCD 27L0477 1 FPC 12 1 assy for Hitachi LCD 27L0506 1 5 1 LCD FPC holder kit 27L6477 1 6 LCD inverter 12 1 for Sanyo LCD 10L1380 1 LCD inverter 12 1 for Hitachi LCD 10L1645 1 7 LED BD 10L1168 1 8 LCD rear cover asm 12 1 TFT 05K6303 1 9 Cable assembly 05K2798 1 LG IBM logo kit 05K6044 1 ThinkPad i Series 1400 Part II 187 ...

Page 196: ...14 1 LCD Unit Parts Listing 3 2 1 3 1 4 9 10 9 5 1 11 12 5 6 7 8 188 ThinkPad i Series 1400 HMM ...

Page 197: ...05K9396 1 14 1 TFT LCD IBM 05K9538 1 5 FPC 14 1 assy 05K2851 1 5 1 LCD FPC holder kit 27L6477 1 6 LCD inverter 14 1 10L1383 1 7 LED BD 14 1 10L1315 1 8 LCD rear cover asm 14 1 TFT 05K6231 1 9 14 1 TFT bracket R L 05K6233 1 10 Cable assembly 05K2798 1 11 LVDS cover 05K5960 1 12 LVDS board 10L1318 1 LG IBM logo kit for 14 1 bezel 05K6310 1 ThinkPad i Series 1400 Part II 189 ...

Page 198: ...Screw mach pan M2 4L NI Screw wafer NYLO M2 5 6L B ZN Screw M3 5L 700 Screw M2 5 L 13 5 steel Screw mach pan M2 20L NI Screw wafer NYLO M2 5 3 5 B ZN Screw hex nut w washer 4 NI Screw pan M2 5 8L 10L1911 Miscellaneous Screw cap for modem Blind cover RJ11 RJ 11 blank cover for no modem model LCD latch spring Battery door Latch R Latch L Battery sw knob CD player power knob CD player panel 05K5686 1...

Page 199: ... Modem cable Spain 27L0450 Modem cable Belgium 27L0451 Modem cable Switzerland 27L0462 Modem cable Portugal 27L0463 Modem cable US C JPN TWN APN LA BRZ 27L0465 Modem cable Australia 27L0467 Psion sage OBI PCMCIA modem Germany 02K4211 1 Psion sage OBI PCMCIA modem France 02K4213 1 Psion sage OBI PCMCIA modem UK 02K4210 1 Psion sage OBI PCMCIA modem Australia 10L7370 1 Psion sage OBI PCMCIA modem Ne...

Page 200: ... Description FRU No Qty US Canada Taiwan 76H3516 Europe 76H3518 UK 76H3524 Italy 76H3530 Switzerland 76H3528 Japan 13H5273 China 02K0539 Korea 76H3535 Australia New Zealand 76H3514 192 ThinkPad i Series 1400 HMM ...

Page 201: ...s any functionally equivalent product program or service may be used instead of the IBM product program or service The evaluation and verification of operation in conjunc tion with other products except those expressly designated by IBM are the responsibility of the user IBM may have patents or pending patent applica tions covering subject matter in this document The furnishing of this document do...

Page 202: ...194 ThinkPad i Series 1400 HMM ...

Page 203: ...e following terms are trademarks or service marks of other companies as follows AMD K6 2 Advanced Micro Devices Inc AMD Advanced Micro Devices Inc Intel Intel Corporation Celeron Intel Corporation Mylar E I Du Pont de Nemours and Company PC Doctor Watergate Software Inc PCMCIA Personal Computer Memory Card Interface Association Pentium Intel Corporation Trademarks 195 ...

Page 204: ...IBM Part Number 37L5192 Printed in U S A S1ðL 9952 ð2 ...

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