IBM ThinkPad 755CX User Manual Download Page 265

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Appendix D. Features and Specifications

This appendix describes features and specifications for the computer.
For more information, refer to the

Technical Reference manual.

Features

Microprocessor

Intel

Pentium

Processor 75MHz

256KB external cache memory

Memory

Onboard (built-in): 8MB RAM

Optional:

– 2MB, 4MB, 8MB, and 16MB IC DRAM cards
– 4MB, 8MB, and 16MB DIMMs with DIMM adapter

Storage devices

2.5-inch removable hard disk drive
3.5-inch removable diskette drive

Display

TFT color LCD, supporting up to 65 536 colors

10.4 inches (when measured diagonally)

SVGA (800-by-600 resolution) on the LCD of the 755CX SVGA

model, or VGA (640-by-480) on the LCD of the 755CX VGA
model

SVGA (1024-by-768 and 800-by-600 resolution) on the external

display

Brightness control

Keyboard

84-key, 85-key, or 89-key

TrackPoint III
Fn key function

External interface

Serial connector (EIA-RS232D)

Parallel connector (Centronics)

External input-device connector

External-display connector

249

Summary of Contents for ThinkPad 755CX

Page 1: ...i ...

Page 2: ...ments or changes in the products and the programs described in this publication at any time It is possible that this publication may contain references to or information about IBM products machines and programs programming or services that are not announced in your country Such references or information must not be construed to mean that IBM intends to announce such IBM products programming or ser...

Page 3: ...M ThinkPad 755CX is one of the most advanced and versatile notebook computers With such innovative features as audio telephony infrared ports a long life battery and a brilliant color display the ThinkPad 755CX will satisfy all of your mobile computing needs iii ...

Page 4: ...urity Features Fn Key Function Power Management ThinkPad Features Program PCMCIA Support Long Life Battery Pack Easy Setup Mwave DSP Audio Telephony and Data Fax Modem Features Thinkpad Features 1 8 2 6 4 10 11 9 3 7 5 Infrared Communication Support iv IBM ThinkPad 755CX User s Guide ...

Page 5: ... security passwords for the computer and hard disk drive Lock security and a personalization utility are also provided See Chapter 5 6 Fn key function The combination of this Fn key and a function key controls display modes battery power saving modes or other functions See page 48 7 TFT color LCD screen A brilliant TFT color LCD screen supports 65536 colors with the following display resolution fo...

Page 6: ...vi IBM ThinkPad 755CX User s Guide ...

Page 7: ...ons describes how to install or remove IBM options Chapter 7 Installing Software explains how to install operating systems device drivers and other support software Chapter 8 Solving Computer Problems describes what to do if you detect a problem Appendix A Avoiding Hardware Conflicts describes how you can avoid problems when you add or remove options Appendix B Advanced Information for PC Cards pr...

Page 8: ...anger Warning Indicates possible damage to programs devices system or data It appears before the related instruction or situation in which possible damage could occur Indicates situations that are potentially hazardous to you It appears in text before the instruction or situation that could be hazardous Indicates situations that are potentially lethal or extremely hazardous to you It is indicated ...

Page 9: ...e devices Turn everything OFF Turn everything OFF First attach all cables to devices First remove the power cord from the outlet Attach the signal cables to receptacles Remove signal cables from receptacles Attach the power cord to an outlet Remove all cables from devices Turn the device ON Note In the U K by law the telephone line cable must be connected after the power cord Note In the U K by la...

Page 10: ...ble battery attached under the diskette drive can be replaced only by your IBM authorized reseller or IBM marketing representative Do not disassemble incinerate or short circuit it The battery can cause burns or release toxic chemicals Do not put it in refuse that is disposed of in landfills Dispose of it as required by local ordinances and regulations CAUTION The fluorescent lamp in the liquid cr...

Page 11: ... Display 27 Using a DOS Application with Your 755CX SVGA Model 28 Using the Online Book 29 Starting for OS 2 or Windows 29 Starting for DOS 29 Keeping the Computer from Being Damaged 30 Carrying the Computer 31 Chapter 3 Operating Your Computer 33 What Happens When Power Is Turned On 34 Using the ThinkPad Features Program 35 Using the Program for OS 2 and Windows 36 Using the PS2 Program 41 Using ...

Page 12: ...ightness 105 Using Power Saving Modes 106 Chapter 5 Protecting Your Computer 109 Using Passwords 110 Power On Password 110 Hard Disk Password 114 Supervisor Password 118 Using the Hard Disk and Power On Passwords 122 Using the Supervisor and Hard Disk Passwords 122 Using Several Hard Disk Drives with the Supervisor Password 123 Using the Personalization Utility Program 125 Using Locks 130 Using th...

Page 13: ...ng the Operating System 176 IBM OS 2 Warp or Version 2 11 176 IBM DOS Version 7 0 or Later 176 Microsoft Windows Version 3 11 or Later 177 Installing the ThinkPad Features Program 180 Installing for OS 2 180 Installing for DOS 181 Installing for Windows 182 Installing the PCMCIA Device Driver 183 Installing for OS 2 185 Installing for DOS 186 Installing for Windows 187 Installing the ThinkPad Disp...

Page 14: ...s 224 Appendix A Avoiding Hardware Conflicts 227 Appendix B Advanced Information for PC Cards 231 Auto Configurator for the PC Card Director Program 231 Example When a Modem Card Is Used 232 Example When the Auto Configurator Is Not Used 232 Example of the Memory Area for the Card Services and 3270 233 Operational Considerations for PCMCIA 234 Software Considerations for OS 2 234 Software Consider...

Page 15: ...Appendix E Product Warranties and Notices 255 Notices 261 Trademarks 261 Electronic Emission Notice 263 Glossary 269 Index 273 Contents xv ...

Page 16: ...xvi IBM ThinkPad 755CX User s Guide ...

Page 17: ...advanced computers for your mobile computing needs It can used both inside and outside your office This chapter describes the Product Map and the steps for setting up the computer About the Product Map 2 Checking Your Items 2 Other Symbols on the Product Map 4 Setting Up Your Computer 6 Copyright IBM Corp 1995 1 ...

Page 18: ...lace the shipping items and options on the Map you will be able to check that all items were shipped to you Checking Your Items Remove the Product Map from the box and spread it on a desk or flat surface Next remove each item and place it on the Map in the position indicated by the numbers in the following figure If any item is missing or damaged contact your place of purchase 2 IBM ThinkPad 755CX...

Page 19: ...wave DSP Features Diskettes contain the DSP digital signal processor support programs 8 Miscellaneous items are supplied in an envelope that contains Spare caps for TrackPoint III Wallet for telephone cable PCMCIA slot cover with cable opening PC Card lock Adhesive strap Application envelope for some countries Other items For some countries the shipment contains no diskettes Therefore you cannot p...

Page 20: ...ing Started Other Symbols on the Product Map This section describes the slots connectors and options that are shown on the Product Map To install options refer to Chapter 6 4 IBM ThinkPad 755CX User s Guide ...

Page 21: ...er Memory Card International Association PCMCIA 1 The security keyhole is used with the Kensington MicroSaver Security System hereafter called Kensington lock or a compatible lock to protect the devices inside of the computer 11 The memory slot which is under the removable diskette drive accepts an integrated circuit dynamic random access memory IC DRAM card or a dual inline memory module DIMM ada...

Page 22: ...board Some pressure might be needed to slide these latches if they are tight 3 Install the battery pack into the middle compartment and firmly press it in to make sure of the electrical connection then close the keyboard Sliding the latches forward while closing the keyboard makes it easier to close the keyboard CAUTION The battery pack provided with your computer contains a small amount of harmfu...

Page 23: ...Getting Started 2 Right Side View 2 1 1 2 2 1 3 3 1 Chapter 1 Getting Started 7 ...

Page 24: ...other screen appears see Screen Messages on page 206 An Operating System screen Date and Time menu 03 31 23 59 59 Month Day Hour Month Second Year 1995 If you purchased a computer with a preinstalled operating system the startup screen of the operating system appears The screen shown is an example of an operating system screen Install your application programs by following the instructions in the ...

Page 25: ...Getting Started 2 3 1 4 5 6 7 Chapter 1 Getting Started 9 ...

Page 26: ...Getting Started 10 IBM ThinkPad 755CX User s Guide ...

Page 27: ... Adapter 18 Battery Pack 20 Car Battery Adapter 22 Operating with the TrackPoint III 23 Changing the Cap 25 Operating the Numeric Keypad 26 Using the Display 27 Using a DOS Application with Your 755CX SVGA Model 28 Using the Online Book 29 Starting for OS 2 or Windows 29 Starting for DOS 29 Keeping the Computer from Being Damaged 30 Carrying the Computer 31 Copyright IBM Corp 1995 11 ...

Page 28: ...cations and Functions Locations and Functions This section provides additional useful information about your computer FrontView 1 2 4 6 3 5 7 8 9 12 11 13 14 10 10 15 16 12 IBM ThinkPad 755CX User s Guide ...

Page 29: ...vice connector is used to attach a mouse external keyboard or external numeric keypad to the computer See page 159 163 6 PCMCIA slots accept one or two PC Cards See page 134 7 The PC Card eject buttons eject the PC Card from the upper or lower PCMCIA slot 8 The keyboard is used to enter data into the computer To use the numeric keypad see 26 9 The security keyhole is used with a Kensington lock or...

Page 30: ...Locations and Functions InsideView RearView Bottom View 6 14 IBM ThinkPad 755CX User s Guide ...

Page 31: ...here you connect a stereo headphone or external speakers See page 76 5 The microphone line in jack a 1 8 inch 3 5 mm diameter jack is where a stereo microphone or external audio device is connected See page 76 6 The modem fax port is where you connect a telephone connector or attachment This is offered as an option in some countries For using see page 76 For installing see page 155 7 The option co...

Page 32: ...r yellow Enough power remains for operation Orange Some power remains for operation Blinking orange The battery pack needs charging Yellow Orange Blinking orange 3 Battery charging Green Indicates that the battery pack is being charged Blinking green Indicates that the battery pack is being discharged before being charged 4 PC card active Orange Turns on when power is supplied to the PCMCIA slot R...

Page 33: ...y pressing the Caps Lock key 9 Scroll lock Green Alternately turns on and off each time the ScrLk key is pressed While this indicator is on the Arrow keys are used as screen scroll function keys In this state the cursor cannot be moved with the Arrow keys Not all application programs support this function 1 Suspend mode Green Indicates that the computer is in suspend mode See page 50 for more info...

Page 34: ...g for the AC Adapter is 100 240 V ac 50 60 Hz CAUTION Do not attempt to open the AC Adapter case The AC Adapter is permanently sealed and cannot be repaired Warning Always use the AC Adapter certified by IBM in the country where you will be using the computer Operating the computer with an incorrect AC Adapter can cause damage to the battery pack and to the computer If you turn on the computer whe...

Page 35: ...oviding Power To Wrap and Fasten the AC Adapter Cable When you carry the AC Adapter with your computer you can wrap and fasten the cable as follows 1 1 2 3 Chapter 2 Getting Familiar with Your Computer 19 ...

Page 36: ...r with the battery pack see Chapter 4 You can use the following battery packs for the ThinkPad 755CX Lithium Ion Battery Pack The following table shows the operating time of the computer with a fully charged lithium ion battery pack Note The operating time depends on the options used with the computer the frequency of key input applications and the configuration of the system so it might be shorte...

Page 37: ...odel 2 6 8 0 hours Before Using the NiMH Battery Pack This battery pack has an internal microprocessor to send the battery status to the computer The storage switch 1 on the battery pack sets this microprocessor on or off When you use this battery pack for the first time set the switch to the on position Do not slide the storage switch to the off position O after you set it to the on position at t...

Page 38: ...seller or IBM marketing representative To charge the standby battery connect the AC Adapter to the computer When using the computer for the first time let the battery charge for at least 8 hours to allow it to become fully charged Car Battery Adapter The Car Battery Adapter available as an option plugs into the cigarette lighter socket of a car and supplies power to your computer See the manual su...

Page 39: ...ingers from their typing position The TrackPoint III consists of a stick 1 on the keyboard and a pair of click buttons 2 below the keyboard The motion of the cursor on the screen is controlled by the amount of pressure applied to the nonslip cap stick in any direction parallel to the keyboard the stick does not move The speed at which the cursor moves corresponds to the amount of pressure on the s...

Page 40: ...ress the click buttons with either thumb to select and drag as required by your software as with any other pointing device Note The mouse cursor may drift in some computer conditions It is not a defect Do not use the TrackPoint III until the pointer stops moving Hints and Tips You can easily drag an item across the screen without constantly pressing the click buttons of the TrackPoint III To drag ...

Page 41: ...he TrackPoint III Changing the Cap The cap 1 on the end of the TrackPoint III is removable You can replace it with one of the spares shipped with your computer Chapter 2 Getting Familiar with Your Computer 25 ...

Page 42: ... to the computer To enable the numeric keypad press and hold Shift and then press NumLk 0 1 2 3 4 5 6 7 8 9 NumLk Note The keys are functional but the function of the key is not printed on the keytop When the keypad is enabled press and hold Shift to temporarily use the cursor and screen control keys NumLk Del Ins End Home PgDn PgUp To disable the numeric keypad press and hold Shift then press Num...

Page 43: ...24 by 768 resolution video at maximum To change the display mode Page 166 To display the computer output on the external display you need to set the display mode appropriately You can select one of the following display modes LCD only The computer output is displayed only on the LCD CRT only The computer output is displayed only on the attached external display When no external display is attached...

Page 44: ...ch the external display that supports only VGA mode 640 by 480 resolution Otherwise the screen of the external display is disordered and the output is not displayed Display Mode LCD only CRT only Both On the LCD On the external display 640 x 480 The screen image appears in the center of LCD and looks smaller than the actual LCD size 640 x 480 The screen image is the same size as the actual screen ...

Page 45: ... CD READIBM at the command prompt and press Enter 2 Type READIBM and press Enter The menu for the online book appears Choose any subject from the menu Hints and Tips You can leave a bookmark or write notes as you read through the online book To leave the book with a bookmark select Place closing bookmark when you exit the online book To write notes 1 Position the cursor at the place where you want...

Page 46: ...ot press on the middle part of the diskette drive Insert a diskette straight into the diskette drive Inserting it at an angle can damage the front of the diskette drive Do not place more than one diskette label on a diskette Two or more labels can cause a label to tear apart inside the drive and cause damage to the diskette drive Use a soft cloth moistened with nonalkaline detergent to wipe the ex...

Page 47: ...computer 5 Make sure all computer doors and covers are closed To remove the diskette drive Page 150 For Your Information 1 You should occasionally back up data from the hard disk to diskettes or tapes 2 To use the AC Adapter outside your home country you need an ac power cord that is certified for the country you are visiting You can purchase one through IBM authorized reseller or IBM marketing re...

Page 48: ...Carrying the Computer 32 IBM ThinkPad 755CX User s Guide ...

Page 49: ...Hibernation File 59 Considerations for Hibernation Mode 60 Using PC Cards 61 About PC Cards 61 Limitations of Operation during Suspend and Hibernation Modes 61 Using the PC Card Director Program 62 Understanding the Meaning of Icons 63 Starting PC Card Director for OS 2 65 Starting PC Card Director for DOS 69 Starting PC Card Director for Windows 70 Using the Infrared Communication Feature 72 Cons...

Page 50: ... computer checks the drives for an operating system is set in the drive startup sequence See Using the Selectable Drive Startup Sequence on page 47 for more information 03 31 23 59 59 Month Day Hour Month Second Year 1995 This screen instructs you to set the date and time for the first time Enter the date and time see page 44 then press Enter This screen indicates that a failure occurred during th...

Page 51: ... shows the structure of the ThinkPad Features program Power Display Alarm Settings ThinkPadSetup ThinkPad Features Device Power More Power Mode SystemInformation Suspend Hibernation Resume Options IRQ DMA Memory Assignment Fuel Personalization Monitor Device Driver Other Devices XX XXXXX X XX XXX The way you start the ThinkPad Features program depends on which operating system is installed Chapter...

Page 52: ...ThinkPad Setup Fuel ThinkPad Features Help XX XXXXX X XX XXX Personalization Docking Control Docking Control Help PC Card Director Hints and Tips You also can use ThinkPad Features Program through the PS2 program from the DOS full screen command prompt in OS 2 or Windows For more information see Using the PS2 Program on page 41 A Help button is available on most menu screens For additional informa...

Page 53: ...stop timer 20 minutes 10 minutes Your choice Processor speed Maximum Automatic clock control Your choice Customizing power mode To customize the power mode such as the processor speed select Settings The power mode settings window appears on the screen The values can be customized for each the battery powered operation and the AC Adapter operation Power for devices When you do not use such interna...

Page 54: ...n using the TrackPoint III or another pointing device Note When the color depth is set to 65536 or 32768 the available virtual screen size is 800 by 600 resolution at maximum To get a virtual screen with a 1024 by 768 resolution set the color depth to 256 755CX SVGA model 755CX VGA model 1024x768 800x600 1024x768 640x480 Monitor You can select the display type and refresh rate of the external disp...

Page 55: ...ion of transfer and operating mode and view the interrupt levels Note You cannot use more than two serial devices at the same time Serial devices include a device connected to the serial port a modem in the diskette drive compartment the infrared ports the Mwave modem fax available as an option in some countries and PCMCIA modem cards Serial This allows you to enable the serial port select the por...

Page 56: ...ows you to display personal data such as your name and address on the screen when the computer is turned on These appear only when a password is set Personalization Utility program Page 125 Docking Control The Docking Control Utility program allows you to attach the IBM Dock II to the computer without turning off the power Note For more information about the Docking Control Utility program refer t...

Page 57: ...ISK SPeed STandby DISCHARGE DEFAULT Cover Note The screen might be different from the actual one You can select an item from the menu and follow the instructions on the screen to set any of the features Using the Batch File You also can specify features by entering appropriate commands or you can create a batch file and set your unique operational environment with the commands Note Refer to the ma...

Page 58: ...tte drive Note You can change the screen color of the Easy Setup menu with Ctrl PgUp or Ctrl PgDn Use Ctrl Home to restore the original screen color 3 Press and hold F1 then turn on the computer Hold F1 until the Easy Setup menu appears Date Time Password Easy Setup Start Test Restart Config Selecting Easy Setup Items To select an item from the Easy Setup menu move the pointer with a pointing devi...

Page 59: ...tte drive compartment Parallel Parallel enables you to select the port address for a device such as a printer that is connected to the parallel connector When you select Bidirectional the data transfer between the selected port and the device is in both directions When you select Unidirectional the data transfer is in only one direction from the computer to the device System Board SystemBoard prov...

Page 60: ...e or icon to change the setting Clicking on the or icon changes the setting more quickly After verifying the selection click on OK or press Enter To cancel the setting click on Cancel or press Esc Password Password is used to set Power on password Hard disk password Supervisor password Power On Hard Disk Supervisor OK Cancel For more information about the passwords see Chapter 5 44 IBM ThinkPad 75...

Page 61: ... startup When no diskette drive is installed and the attached expansion unit Dock I or II has a diskette drive the diskette drive in the Dock I or Dock II will be the first drive Test Select Test to test the computer hardware HDD 2 SystemBoard Memory Display HDD 1 FDD 1 PCMCIA 2 Parallel PCMCIA 1 FDD 2 CD ROM Serial DSP Restart Start 1 1 1 2 2 2 For more information see Testing the Computer on pag...

Page 62: ...Using Easy Setup Restart Click on Restart to restart the computer after you have made your selections Then press Enter or click on OK 46 IBM ThinkPad 755CX User s Guide ...

Page 63: ...ing system from the hard disk or the PC Card without checking the diskette drive or to do a remote program load RPL Changing the Startup Sequence To change the startup sequence do the following To start Easy Setup Page 42 1 Start Easy Setup and select the Start up icon 2 Move the cursor to the Reset icon then press the Spacebar The sequence is reset and all available device icons appear at the bot...

Page 64: ...l Gauge program display on or off The Fuel Gauge program must be activated before you can use this key combination When the this key combination is pressed For OS 2 or Windows users The window for the battery power status appears or disappears Parameters for power status can be set For DOS users Power status information appears or disappears at the top right corner of the screen Fn F3 Standby mode...

Page 65: ... Customize The AC mode is used when the AC Adapter is attached The Fuel Gauge program displays the current power option Fn Hibernation mode Places the computer in hibernation mode See Hibernation Mode on page 57 for more information Fn PgUp Dock I speaker volume up Increases the speaker volume of the Dock I attached to the computer Fn PgDn Dock I speaker volume down Decreases the speaker volume of...

Page 66: ...80 Standby Mode Enter standby mode for short idle times for example when you are having a short conversation with someone See page 52 for more information Suspend Mode Enter suspend mode for short periods of time away from your computer See page 53 for more information Hibernation Mode Enter hibernation mode when you leave your office and then return the following day See page 57 for more informat...

Page 67: ...ice versa The battery shows the amount of battery power used in each stage To set the timer Page 35 Power Switch Fn F11 StandbyMode Fn F4 Power Shutdown Switch Operation Mode Anykey Power off 0 Hibernation Mode Timer Power Switch Fn F12 Low Battery Timer Fn F3 Timer Customized High Performance Automatic CloseKeyboard Fnkey Timer OpenLCD Fn F4 Timer Low Battery Close LCD OpenKeyboard Fn F12 Timer L...

Page 68: ...owing shows what causes the computer to enter standby mode and resume normal operation Fn key function Page 48 To Standby Mode Fn F3 key combination is pressed No activity occurs during the time specified by the Standby timer of the ThinkPad Features program To Normal Operation Any key is pressed Pointing device activity occurs ThinkPad Features program Page 35 52 IBM ThinkPad 755CX User s Guide ...

Page 69: ...de is used The suspend button is pressed in the Fuel Gauge program No activity occurs during the time specified by the Suspend timer of the ThinkPad Features program A low battery condition is detected The keyboard is opened To Normal Operation The Fn key is pressed Any key is pressed when the AC Adapter is being used The LCD is opened The PS2 command to resume is used The Resume on timer option i...

Page 70: ...rs suspend mode the current memory data is stored on the hard disk so that you can get the same status after resuming normal operation And if battery power is exhausted during suspend mode you can get the same status by turning on the computer To use this function do the following Note Before using safe suspend mode you need to create a hibernation file See page 59 ThinkPad Features program Page 3...

Page 71: ... mode when used with the following operating systems DOS Version 7 0 or later OS 2 Version 2 11 or later Microsoft Windows Version 3 11 with DOS Version 7 0 or later Important When you use Windows Version 3 11 ensure that Advanced Power Management APM is installed according to the instructions in Microsoft Windows Version 3 11 or Later on page 177 Note When the computer enters standby mode you wil...

Page 72: ... computer does not operate restart the application or computer When the computer is using one of the following IBM modem cards and detects an incoming call while in suspend mode it automatically resumes normal operation IBM PCMCIA Data FAX Modem IBM High Speed PCMCIA Data FAX Modem While the communication link is active the computer will not enter suspend mode 56 IBM ThinkPad 755CX User s Guide ...

Page 73: ...he computer automatically restores the tasks and resumes normal operation No battery power is used when the computer is in hibernation mode Note The time to enter or exit hibernation mode depends on the size of computer memory It takes approximately 10 seconds to enter hibernation mode and 18 seconds to resume normal operation with a base memory of 8MB When the computer is entering hibernation mod...

Page 74: ...pressed in the Fuel Gauge program The time specified by the hibernate option after the expiration of suspend mode No activity occurs during the time specified by the Suspend timer of the ThinkPad Features program A low battery condition is detected The power switch is pressed when the Hibernate by power switch option is set To Normal Operation The power switch is pressed ThinkPad Features program ...

Page 75: ... plus 1MB The following describes how to create a hibernation file for your operating system OS 2 WIN For OS 2 or Windows 1 Turn on the computer and start the ThinkPad Features program 2 Select Power then select More 3 Click on the Enable Hibernation button in the Suspend Options menu To start the ThinkPad Features Program Page 36 4 Make sure the hard disk drive in the computer is selected then cl...

Page 76: ...h ac power and is using one of the following IBM PC Cards it does not enter hibernation mode IBM PCMCIA Data FAX Modem IBM High Speed PCMCIA Data FAX Modem IBM 3270 Emulation Credit Card Adapter IBM 5250 Emulation Credit Card Adapter IBM Token Ring 16 4 Credit Card Adapter IBM Credit Card Adapter for Ethernet This prevents possible problems from occurring with communication application programs af...

Page 77: ...u insert them in the PCMCIA slot of the computer The PCMCIA slots support Type I Type II and Type III PC Cards You can use two Type I or Type II PC Cards or one Type III PC Card in the PCMCIA slots However because the Type III PC Card is thicker than Type I or Type II PC Cards you cannot use other types of PC Cards when using the Type III PC Card Ask your IBM authorized reseller or IBM marketing r...

Page 78: ...must be installed before you can use it PC Card Director requires the Socket Services and Card Services drivers Note The PCMCIA CRD file does not always list the latest PC Cards If your PC Card is not listed try using it with PC Card Director anyway Some PC Cards come with their own drivers that will set the cards up just as PC Card Director does However if these cards are supported by PC Card Dir...

Page 79: ...on most PC Card Director menu screens To obtain additional information for each screen click on this button Status Icons Icon DOS Message Meaning Empty No PC Card is installed in the slot A PC Card is installed OK Ready The PC Card in the slot is ready to be used Not Ready The PC Card is not ready and cannot be used Non Removal The PC Card cannot be removed Chapter 3 Operating Your Computer 63 ...

Page 80: ...y card Hard Disk Hard disk card LAN Communication card Modem Modem card Depends on the type of your PC Card I O card DOS Boot DOS was booted from the PC Card that is installed OS2 Boot OS 2 was booted from the PC Card that is installed 64 IBM ThinkPad 755CX User s Guide ...

Page 81: ... the upper PCMCIA slot and No 2 is for the lower slot Descriptions of the icons are on page 63 OK Options Help View PCMCIA Socket Detail View No Status CardType CardInformation X XXXXXXXXXX XXXXX XX XXXX 1 2 PCCardDirector To view the details of a PC Card select the slot with a pointing device or use the Arrow keys and press Enter Chapter 3 Operating Your Computer 65 ...

Page 82: ...d the PC Card type You can minimize the screen and keep it on the OS 2 Desktop to view the slot information Options Help View 1 2 Modem PCCardDirector If you select Options the following choices appear Options Help View PCMCIASocket DetailView No Status CardType CardInform Customize Register PCCardDirector Customize sets beeps on or off or activates pop up windows when a PC Card is inserted or rem...

Page 83: ...scardisready Bymanualoperation After you register an application program you can set it to start automatically when you insert the PC Card by selecting Automatically as card is inserted You can register more than one application program for a PC Card When you insert the card the application programs are listed on the screen so you can select the one you want Chapter 3 Operating Your Computer 67 ...

Page 84: ...a program in the workplace of the Object List RegisterObject SelectaCardType Memory OK Help V ObjectList Drag DropWorkplaceObjectbelow Launch AutomaticallyasCardisReady AutomaticallyasCardisInserted ByManualOperation Launch Remove 3 Select a choice from the Launch box to run the application program automatically or manually Help is available on most menu screens for additional information 68 IBM T...

Page 85: ...the lower one PC Card Director c Copyright IBM Corp 1995 Version x xx Card Services DOS Card Services Driver Version x xx PCMCIA Card Services Release x xx Revision x xx Socket Information Socket Status Card Type Card Information 1 Empty 2 Ready Memory x xxxx xxxx xxx xx xx xx xx To view more information about an installed PC Card highlight the item with the Arrow keys then press Enter Chapter 3 O...

Page 86: ...he lower one Options Help PCCardsSummary No Status CardType CardInformation Empty 1 CardInfo Appl Register Ready Memory X XXXXX XXXXX XXX XX XX XX XX 2 OK PCCardDirector PCCardDirector Card Info shows details of a PC Card installed in a PCMCIA slot To view information about a PC Card highlight the item with the Arrow keys or pointing device then click on this button You also can register a PC Card...

Page 87: ...ard Director icons Register does the following Register Applications registers changes or deletes an application program according to the PC Card type even when a PC Card is not installed in the slot Change Card Type changes a registered PC Card type to another type Help is available on most menu screens for additional information Single icon PCCardDirector This icon temporarily changes when a PC ...

Page 88: ...s Mbps Million bits per second Kbps Kilobits per second ThinkPad 1 15 Mbps This mode is used when communicating with another 755 series computer with an infrared port or other systems supporting ThinkPad mode Generic up to 115 Kbps This mode is used when communicating with other IBM ThinkPad computers Hewlett Packard 100LX 200LX Omnibook or other systems with infrared ports supporting Generic mode...

Page 89: ...ing distance It is recommended that the communicating ThinkPad computers use their rear infrared port to communicate with each other When communicating between a front infrared port and an infrared port on another computer the infrared ports on the computers must face directly each other at a communicating distance Chapter 3 Operating Your Computer 73 ...

Page 90: ...Run only one application at a time to communicate with the infrared ports When using applications that use a conventional serial port and serial cable to exchange data your computer infrared ports are used as a replacement for the serial port and cable In this case the ThinkPad mode cannot be used The communicating distance might be less if The other system is not the same model as your computer T...

Page 91: ...ment of audio and telephony functions including the following Note You can use an electric condenser microphone with battery for sound recording Audio functions Supports the wave audio record and playback up to 16 bit stereo and 44 kHz sampling Note For more information about MIDI see Mwave MIDI Overview on page 244 Provides a high quality MIDI wave table synthesizer with 128 instruments and up to...

Page 92: ...etween the computer and the external cables or devices Modem FaxPort When the DAA TelephonyOption Kit is installed Data Access Arrangement Headphone Jack Microphone Line in Jack Modem FaxPort Headphone Jack Microphone Line in Jack Modem FaxPort Headphone Jack Microphone Line in Jack Headset Note The headset is available as an option in some countries 76 IBM ThinkPad 755CX User s Guide ...

Page 93: ...S 2 For OS 2 Wave audio record and playback MIDI synthesizer Sound Blaster support in the DOS session Data modem DOS For DOS Sound Blaster support Data modem WIN For Windows Wave audio record and playback MIDI synthesizer Sound Blaster support in the DOS session Data modem Fax modem Speaker phone Telephone answering machine Chapter 3 Operating Your Computer 77 ...

Page 94: ...ction in the OS 2 environment through Multimedia Presentation Manager 2 MMPM 2 To use the Mwave audio functions with OS 2 refer to the MMPM 2 manuals For Your Information To play the audio files in the MMPM 2 environment When you play the wave audio files select the Digital Audio icon When you play the MIDI sequencer files select the MIDI icon 78 IBM ThinkPad 755CX User s Guide ...

Page 95: ...the DOS prompt then press Enter A boot diskette has started to be created Before starting your games restart your computer with this boot diskette inserted into the diskette drive Some sample files such as CONFIG SYS file will be created on the boot diskette You might need to modify these files by referring to the manuals that came with your game Default Values for DOS Games Audio Most games autom...

Page 96: ... To install Mwave support software Page 195 Recorder Record and Playback the Wave Audio Files When you double click on the Recorder icon the following window appears File Edit Options Help Mono 11 025kHz 8Bit 0bytes Position 00 00 00 Length 00 00 00 Marker A Clear A Marker B Clear B Record Play Rewind Fast F Stop MwaveRecorder This window allows you to record and playback the wave audio files Note...

Page 97: ... monitor the input signal and select an options menu for additional control Output control This section allows you to adjust the balance and sound levels and control the mute And it can be considered a stereo amplifier with three input signals controls to mix the input signals and a volume control for the output Audio button This is used to enable the following audio features Audio Image Synch in ...

Page 98: ...Aux Source when you do not use it Playing the MIDI Sequencer Files Note When you play the MIDI files in the WIN OS 2 environment see Considerations for the WIN OS 2 Environment on page 83 To play the MIDI sequencer files in Windows use the Windows Media Player as follows 1 Start Windows then open the Accessories group 2 Double click on the Media Player icon 3 When the Media Player window appears s...

Page 99: ...y Simply open a DOS session and start the game Considerations for the WIN OS 2 Environment Note When you use the WIN OS 2 environment see For Windows or WIN OS 2 on page 80 The following are considerations when playing MIDI files in the WIN OS 2 environment To play MIDI files in the WIN OS 2 environment from the OS 2 Desktop the Audio Mode in the Mwave Audio Options menu must be set to Normal not ...

Page 100: ...to your computer DANGER To avoid shock hazard do not connect the telephone cable to or disconnect it from the telephone outlet on the wall during electrical storms Note If you use both the computer and a telephone with one telephone cable use the wallet supplied with your computer When your computer has a modem fax port with a square receptacle connect the connector 1 of the ferrite core end of th...

Page 101: ... start the Mwave modem OS 2 WIN For OS 2 and Windows To start the Mwave modem do the following 1 Select the following according to your operating system For OS 2 open the Mwave for OS 2 folder on the OS 2 Desktop For Windows open the Mwave ThinkPad window Note The screen might be different from the actual one The following screen appears Mwave ThinkPad Recorder AudioControl Discriminator FAX Count...

Page 102: ...wave DSP resources for other functions To turn off the modem do the following 1 If the modem window is minimized double click on the icon to maximize it 2 Select Close from the window pull down menu DOS For DOS To start the Mwave modem do the following Type MWMODEM ON at the DOS prompt then press Enter Stopping the Modem When you finish using the communication programs turn off the modem to free t...

Page 103: ...ion Bell 103 212A CCITT V 21 V 22 V 22bis protocols with data from 50 to 2400 bps CCITT V 32 protocols with data rates of 4800 9600 uncoded and 9600 bps Trellis coded optional CCITT V 32bis protocols with data rates of 4800 7200 9600 12000 and 14400 bps optional Hayes AT command set compatibility Call progress monitor Automatic dialing Dual tone modulation frequency DTMF and Pulse dialing Asynchro...

Page 104: ...election window allows you to change the country name currently supported by the Mwave telephony features When you travel to other countries and use the Mwave telephony function you need to change the country name from the country list in this window FAX Discriminator Mwave Call Discriminator The Mwave Call Discriminator provides voice and fax discrimination by monitoring incoming calls for fax si...

Page 105: ...tomatic dialing feature Support for a Windows MCI FAX application interface Use of direct memory access DMA instead of a COM port to increase performance DTMF and pulse dialing G3 transfers T 4 T 30 operations V 27ter 2400 4800 bps send receive V 29 7200 9600 bps send receive V 17 14400 14400 bps send receive Chapter 3 Operating Your Computer 89 ...

Page 106: ...speaker Record multiple greetings Log both incoming and outgoing phone calls Start recording your greeting after being alerted by a beep Alert your caller with a beep to start recording a message Place the phone on or off hook and dial phone numbers Redial from the message log and from the keyboard Use both tone DTMF and pulse dialing from the keyboard Maintain a log of incoming and outgoing phone...

Page 107: ...us 96 Using the Battery Power Status Indicator 96 Low Battery Condition 97 Using the Fuel Gauge Program 98 Fuel Gauge Program for OS 2 and Windows 99 Discharging the Battery Pack for OS 2 and Windows 100 Fuel Gauge Program for DOS 101 Discharging the Battery Pack for DOS 102 Preserving Battery Pack Life 103 Maximizing Battery Powered Operation 104 Using Advanced Power Management 104 Decreasing LCD...

Page 108: ...5CX SVGA model 3 0 9 0 hours 755CX VGA model 3 2 10 0 hours Model Battery Operating Time 755CX SVGA model 2 4 7 0 hours 755CX VGA model 2 6 8 0 hours Charging the Battery Pack Note While you operate your computer the NiMH battery pack cannot be charged with the optional Car Battery Adapter You can charge the battery pack with either the AC Adapter or the Travel Quick Charger available as an option...

Page 109: ...Notes When you charge the lithium ion battery pack its temperature must be at least 10 C 50 F When the AC Adapter is connected and the remaining power of the installed battery pack is less than a certain amount discharging and then charging of the battery pack starts automatically 3 Connect the AC Adapter to the computer The system status indicators show the following Indicator Color Meaning Batte...

Page 110: ...r off charging 1 2 hours Suspend mode charging 1 2 hours To discharge the battery Page 98 If the NiMH battery pack is new or has not been used for a long period of time it will not reach full charge with only a single charging You must discharge and recharge it from three to six times to maximize battery operating time Charging with the Travel Quick Charger You can charge the battery pack with the...

Page 111: ...thout turning off the computer do the following Note Make sure the locking lever for the hard disk drive is unlocked 1 Open the LCD then open the keyboard The computer automatically enters suspend mode and One beep is heard The suspend indicator blinks then glows steadily 2 When the computer has entered suspend mode pull the battery pack toward the front of the computer then remove it 1 2 3 Quickl...

Page 112: ...ndition Status Condition Action Required Green Fully charged Continue your work Yellow Usable Orange Some power remains You will hear three beeps when the indicator turns orange The AC Adapter should be connected to the computer to charge the battery pack Blinking orange Almost discharged low battery See Low Battery Condition on page 97 Within 1 minute either Connect the AC Adapter to the computer...

Page 113: ...o the computer 2 Press the Fn key To continue your work with a fully charged battery pack 1 Connect the AC Adapter to the computer 2 Replace the battery pack with a fully charged one 3 Press the Fn key 4 Disconnect the AC Adapter from the computer Low Battery Condition Warning Do not leave the computer in this condition for an extended period of time Data in memory will be lost When the battery pa...

Page 114: ...e program displays the battery pack condition on the screen The Fuel Gauge program appears on the screen with the following information about the battery pack Power mode Battery status Suspend or hibernation options Discharge option Refer to the Fuel Gauge program instructions that are appropriate for your operating system To install the ThinkPad Features program Page 180 98 IBM ThinkPad 755CX Use...

Page 115: ...ource AC Adapter or battery and power mode alternately appear when the program is minimized Power source AC AC Adapter BT Battery Power mode HI High Performance AU Automatic CU Customized 2 Duration of Remaining Power does not appear when the AC Adapter is connected When the AC Adapter is connected Maximized Size Minimized Size Fuel When operated with battery Maximized Size Minimized Size 70 1 30 ...

Page 116: ... Charge button appears in place of the Discharge button You can use the computer while the battery pack is discharging however do not enter suspend mode or turn off the computer until the discharge is complete Power on password Page 110 Hints and Tips If you have to leave the computer while the battery pack is discharging you can use the power on password to secure the computer Close the LCD then ...

Page 117: ...s connected When the AC Adapter is connected to the computer the following messages alternately appear Power source AC Charge charging battery pack AC Discharge discharging battery pack AC battery pack is fully charged Neither charging nor discharging AC Charge Power mode High for High Performance mode Auto for Automatic mode Custom for Customized mode High Percentage of charging completed 6 Chapt...

Page 118: ...Discharging the Battery Pack for DOS Note The battery charging indicator starts blinking when discharging starts When the AC Adapter is being used and the battery pack needs to be discharged the computer prompts you with an asterisk next to the fuel gauge message AC Charge When you see this message enter the following command to discharge the battery pack PS2 DISCHARGE E The battery pack starts to...

Page 119: ...il it is fully charged Turn off the computer whenever it is not in use Warning When you use the NiMH battery pack make sure the battery pack power is completely used before you recharge it Recharging a battery pack that is not completely discharged can shorten battery life When you use the NiMH battery pack discharge the battery pack occasionally by using the Fuel Gauge program Chapter 4 Using Bat...

Page 120: ...tions and devices are idle Each operating system comes with its own APM OS 2 When you use OS 2 with your computer APM is automatically installed when the installation program detects that your computer has the power management function DOS When you use DOS with your computer APM is automatically installed when the installation program detects that your computer has the power management function To...

Page 121: ... setup 3 Using the Arrow keys position the highlighted cursor over MS DOS System and press Enter 4 Position the highlighted cursor over MS DOS System with APM and press Enter 5 Verify that the item Computer has changed to MS DOS System with APM on the screen If not return to step 3 Windows Setup If your computer or network appears on the Hardware Compatibility List with an asterisk next to it pres...

Page 122: ...Suspend mode Page 53 Enter standby mode or suspend mode whenever you are not using the computer One of the easiest ways to enter the modes is to use the Fn key function To enter standby mode press and hold Fn then press F3 To enter suspend mode press and hold Fn then press F4 106 IBM ThinkPad 755CX User s Guide ...

Page 123: ...mode To install the ThinkPad Features program Page 180 Note These power modes allow immediate setting of all power saving options to their optimum values for each mode To select a power mode Press and hold Fn then press F11 The power option High Performance Automatic or Customized changes each time you press this key combination Enter PS2 at the command prompt then select the appropriate PS2 comma...

Page 124: ...n the feature is controlled by the power management function Maximum Medium Slow Minimum Processor Hard Disk Off Saving Power Amount of Required Power 100 Legend Require Power in No Power Saving Mode Power Saving Mode StandbyMode SuspendMode LCD Off Brightness at Minimum Internal Serial Off External Serial Off Infrared Off Mwave DSP Off 108 IBM ThinkPad 755CX User s Guide ...

Page 125: ...y Setup 118 Setting a Supervisor Password 119 Changing a Supervisor Password 120 Removing a Supervisor Password 121 Using the Hard Disk and Power On Passwords 122 Using the Supervisor and Hard Disk Passwords 122 Using Several Hard Disk Drives with the Supervisor Password 123 Setting a Supervisor Password when Using Several Hard Disk Drives 123 Changing or Removing the Supervisor Password when Usin...

Page 126: ...ress the Fn key to return to normal operation from suspend mode When the password is entered correctly OK appears Note Do not press the Spacebar after you enter the password this action removes the password Note If Default in the Config menu Password or Start up functions cannot be selected when using Easy Setup the supervisor password is set You must enter the supervisor password instead of the p...

Page 127: ...case one a are regarded as same letter 4 Type your power on password again to verify it then press Enter Do Not Forget Your Power On Password If you forget your power on password you cannot reset it You have to take the computer to IBM authorized reseller or IBM marketing representative have the password canceled Proof of purchase is required and an additional charge might be required for the serv...

Page 128: ... on 2 When the password prompt appears type your current power on password then press the Spacebar 3 Type the new password then press the Spacebar Use no more than seven characters 4 Type the new password again to verify it then press Enter Do Not Forget Your Power On Password If you forget your power on password you cannot reset it You have to take the computer to IBM authorized reseller or IBM m...

Page 129: ...t You cannot remove it after normal operation is resumed To remove a power on password do the following 1 Turn off the computer and wait at least 5 seconds then turn it on 2 When the password prompt appears type your current password then press the Spacebar 3 Press Enter Chapter 5 Protecting Your Computer 113 ...

Page 130: ...r returns to normal operation from suspend or hibernation mode When the password is entered correctly OK appears When the hard disk password is set activation of the resume function by the timer or an incoming calling suspend mode is disappeared To use the resume function with the hard disk password see Using the Hard Disk and Power On Passwords on page 122 When you enter the password incorrectly ...

Page 131: ...r example A and lowercase one a are regarded as same letter 4 Type your hard disk password again for verification then press Enter Do Not Forget Your Hard Disk Password Note the password and keep it in a safe place If you forget your hard disk password there is no way to reset it or recover data from the hard disk Neither IBM authorized reseller nor IBM marketing representative can make the hard d...

Page 132: ...d on page 112 When the hard disk password and the power on password are different or the power on password has not been set 1 Turn off the computer and wait at least 5 seconds then turn it on 2 If you have set a power on password type it then press Enter 3 When the hard disk password prompt appears type your current hard disk password then press the Spacebar 4 Type the new password then press the ...

Page 133: ...word on page 113 The hard disk password is removed when you remove the power on password If the power on password is needed reset it When the hard disk password and the power on password are different or a power on password is not set 1 Turn off the computer and wait at least 5 seconds then turn it on 2 If you have set the power on password type it then press Enter 3 When the hard disk password pr...

Page 134: ...rectly X appears If you fail to enter the correct password after three tries you must turn the computer off wait at least 5 seconds and turn it on to try again When typing your password release each key quickly If you hold a key down too long the same letter can be entered repeatedly Considerations When Using Easy Setup The correct supervisor password must be entered to use all Easy Setup function...

Page 135: ...our supervisor password again for verification then press Enter Do Not Forget Your Supervisor Password Note the password and keep it in a safe place If you forget your supervisor password you have to take the computer to IBM authorized reseller or IBM marketing representative to have the system board replaced Proof of purchase is required and an additional charge might be required for the service ...

Page 136: ...new password then press Enter 6 Type the new password again for verification then press Enter Do Not Forget Your Supervisor Password Note the password and keep it in a safe place If you forget your supervisor password you have to take the computer to IBM authorized reseller or IBM marketing representative to have the system board replaced Proof of purchase is required and an additional charge migh...

Page 137: ...upervisor password then press Enter 3 Select the Password icon from the Easy Setup menu 4 Select the Supervisor icon then type your current password and press the Spacebar 5 Press Enter at the blank box 6 Press Enter again at the verification screen When the supervisor password is removed the lock in the Supervisor icon is unlocked and the Hard Disk icon can be selected If you are using more than ...

Page 138: ...ormal operation is activated from the suspend mode by the timer or an incoming call Enter the hard disk password at the blank screen The LCD remains blank until the correct password is entered Using the Supervisor and Hard Disk Passwords When a supervisor password is set the same password is automatically set for the hard disk password Before setting a supervisor password make sure that you do not...

Page 139: ...when you are using more than one hard disk drive on your computer To set a supervisor password Page 119 1 Set a supervisor password on your computer To install the hard disk drive Page 148 2 Install the hard disk drive in which you want to set the supervisor password 3 Turn on the computer A 158 error appears 4 Press Enter 5 Type your supervisor password at the power on password prompt and start E...

Page 140: ...et 3 Turn on the computer The hard disk password prompt appears 4 Do one of the following If you removed the supervisor password type the old supervisor password then press the Spacebar If you changed the supervisor password change the old password on the hard disk drive to the new supervisor password by typing old space new space new To remove the supervisor password Page 121 To install the hard ...

Page 141: ...d the personalization update utility to store your personal data in the nonvolatile memory of your system Company Name IBM Corporation Address Phone Number Fax Number Message In case you find this computer please contact at the above address Note For the detail of bitmap graphics see page 269 To create a personal message for your password prompt screen first edit the text and convert it into a bit...

Page 142: ...ge Attributes Brush Shapes Edit Colors d Specify a Width of 320 and Height of 200 then select pels under Units and Black and White for Colors Select OK Image Attributes Units Width Height in OK Cancel Default Black and White Colors Colors cm pels 320 200 Note When closing the Write window you can save the text for future use e Return to the Write window Save the text to the clipboard by selecting ...

Page 143: ...t in OK Cancel Default Black and White Colors Colors cm pels 160 100 Note A sample file BACKSAMP BMP is available on the diskette d Draw an image or color the background then save the background as a 16 color bitmap file to the backup copy of the Utility Diskette Save As OK Cancel Info File Name a Directories Save File as Type 16 Color bitmap BMP a Drives a The background will contain 16 copies of...

Page 144: ...elect the bitmap file with the saved text on the backup of the Utility Diskette then click on OK or press Enter d Select Convert then select Save from the pull down menu e Select File then select Background from the pull down menu f Select the bitmap file with the saved background on the backup of the Utility Diskette then click on OK or press Enter Note Press the Spacebar to return to the Persona...

Page 145: ...turn on the computer 9 Select Update personalization data then follow the instructions on the screen Your data will be stored in the nonvolatile memory in the system You have completed creating your personalized password prompt screen It will appear when the password prompt appears To create a new screen follow the same instructions Chapter 5 Protecting Your Computer 129 ...

Page 146: ...ermission To protect the internal devices under the keyboard and prevent the removal of your computer you can use the lock on the hard disk drive or you can purchase a Kensington lock or a compatible lock To protect PC Cards you can use a PC Card lock Using the Lock on the Hard Disk Drive The hard disk drive locking lever which is located on the bottom of the computer protects your computer and it...

Page 147: ...without permission purchase a Kensington lock or a compatible lock and attach it to the keyhole on the side of the computer then secure the chain on the lock to a stationary object This also prevents the keyboard from opening and secures the internal devices under the keyboard Chapter 5 Protecting Your Computer 131 ...

Page 148: ...e locking lever for the hard disk drive is unlocked 1 Open the keyboard and insert the PC Card lock 1 as shown To lock the keyboard Page 130 2 Lock the keyboard Removing the PC Card Lock To remove the PC Card lock open the keyboard and insert the tip of a pen into the opening 2 from the inner side of the computer then push the lock up 132 IBM ThinkPad 755CX User s Guide ...

Page 149: ...ront Bezel 153 Installing the DAA Telephony Kit 155 Attaching an External Numeric Keypad or a Mouse 159 Using the Mouse and Other Pointing Devices 160 Using a Mouse on the IBM ThinkPad Space Saver Keyboard 161 Using the ThinkPad Features Program 161 Using the Device Driver on the Utility Diskette 162 Attaching an External Keyboard 163 Attaching a Printer 164 Attaching an External Display 165 Chang...

Page 150: ...at is on the PCMCIA Features Diskette before using the PC Cards Type I and II PC Cards can be inserted into either the upper or lower slot or in both slots at the same time The Type III PC Card however must be inserted only in the lower slot 2 You cannot use a Type I or II PC Card in the upper slot 1 when a Type III PC Card is used To install the PCMCIA device driver Page 183 Inserting the PC Card...

Page 151: ...he upper slot 1 or the lower slot 2 as shown Then press it firmly into the connector If you want to use another PC Card insert it into the other slot in the same way If you are using a Type III PC Card insert the card into the lower slot 2 as shown Then press it firmly into the connector 3 Install the cover with the cable opening 1 Chapter 6 Installing and Removing Options 135 ...

Page 152: ...erations for Hibernation Mode on page 60 To secure your PC Card with a lock see Using the PC Card Lock on page 132 Removing the PC Card Warning Make sure the PC Card lock is removed 1 Press the PC Card eject button 1 or 2 for the PC Card you want to remove then remove the PC Card To remove PC Card lock Page 132 2 If you are not going to use the PCMCIA slot remove the cover with the cable opening t...

Page 153: ...apacities 2MB 4MB 8MB and 16MB Because your computer comes with 8MB of memory the maximum memory capacity is 24MB if a 16MB IC DRAM card is installed DIMM You might want to install more memory to maximize the capability of your computer Instead of using IC DRAM cards you can install a dual inline memory module adapter DIMM adapter with one or two DIMMs in the same slot you would install the IC DRA...

Page 154: ...ure the AC Adapter is disconnected from the computer The diskette drive is a very delicate device that needs careful handling Do not press on drop or apply any shock to the diskette drive while it is removed from the computer 3 Make sure there is no diskette in the diskette drive then lift the diskette drive handle by pulling the plastic tape 1 4 Remove the diskette drive 5 Which type of memory ar...

Page 155: ...as shown This strap is used to remove the card Warning Do not insert any PC Card into the connector for the IC DRAM card 7 Insert the IC DRAM card as shown Press the card firmly into the connector 8 Go to step 12 on page 142 Chapter 6 Installing and Removing Options 139 ...

Page 156: ...h the levers 1 on the left side of the base plate 2 and pull the plate slightly toward the front then raise the rear portion of the base plate and remove it 1 2 2 1 10 Insert the DIMM adapter 1 into the connector by pressing on both edges as shown 1 140 IBM ThinkPad 755CX User s Guide ...

Page 157: ...he side of the DIMM b With the notched end of the DIMM toward the right side of the socket 2 insert the DIMM at an angle of approximately 35 degrees into the socket then press it firmly c Pivot the DIMM until it snaps into place If you have another DIMM to install insert it into the other socket in the same way 2 1 1 2 2 1 35 Side View Chapter 6 Installing and Removing Options 141 ...

Page 158: ...d get damaged 12 Reinstall the diskette drive Press on the shaded area 1 as shown until the drive snaps into the connector 2 1 13 Close the keyboard and reconnect all cables You have completed the installation of the IC DRAM card or DIMMs If you plan to use the hibernation mode see Creating the Hibernation File on page 59 142 IBM ThinkPad 755CX User s Guide ...

Page 159: ...he AC Adapter is disconnected from the computer The diskette drive is a very delicate device that needs careful handling Do not press on drop or apply any shock to the diskette drive while it is removed from the computer 3 Make sure there is no diskette in the diskette drive then lift the diskette drive handle by pulling the plastic tape 1 4 Remove the diskette drive 5 Which type of memory are you...

Page 160: ...Increasing Memory Capacity 6 Remove the IC DRAM card by pulling the adhesive strap 1 7 Go to step 12 on page 147 144 IBM ThinkPad 755CX User s Guide ...

Page 161: ...the DIMM do not touch its contact edge 8 Press the locks on both edges of the socket at the same time and remove the DIMM 9 While holding the strap 1 pull the DIMM adapter 2 toward the front and remove it 2 1 Chapter 6 Installing and Removing Options 145 ...

Page 162: ...ould have been removed and stored when you installed the DIMM adapter 10 Pinch the levers 1 on the left side of the base plate 2 and install it as shown 1 2 2 1 11 Push the base plate forward to click it into place 146 IBM ThinkPad 755CX User s Guide ...

Page 163: ...ress on the middle of the diskette drive Otherwise the drive head could get damaged 12 Reinstall the diskette drive Press on the shaded area 1 as shown until the drive snaps into the connector 2 1 13 Close the keyboard and reconnect all cables Chapter 6 Installing and Removing Options 147 ...

Page 164: ...ve is unlocked Warning The hard disk drive is a very delicate device that needs careful handling If it falls onto a hard surface severe damage can occur 2 Open the LCD then open the keyboard 3 Lift the hard disk drive handle by pulling the plastic tape 1 Warning The metal area at the bottom of the hard disk drive might become hot but it is not a defect 4 Remove the hard disk drive Be careful that ...

Page 165: ...nto the connector then close the keyboard 6 Connect the AC Adapter to the computer then turn on the computer You have completed the replacement of the hard disk drive To install your operating system and other necessary software see What You Need for Your Computer on page 174 Chapter 6 Installing and Removing Options 149 ...

Page 166: ...ure the AC Adapter is disconnected from the computer The diskette drive is a very delicate device that needs careful handling Do not press on drop or apply any shock to the diskette drive while it is removed from the computer 1 Turn off the computer then disconnect the AC Adapter and all cables from the computer 2 Open the LCD then open the keyboard 3 Make sure that no diskette is in the drive the...

Page 167: ...ions in the Diskette Drive Compartment 5 Push the option cover from the bottom of the computer and remove it 6 Insert a coin between the diskette drive bezel and computer Chapter 6 Installing and Removing Options 151 ...

Page 168: ...ct all cables 10 If the option in the diskette drive compartment requires power start the ThinkPad Features program and set the parameter to send power to it OS 2 WIN If you are using OS 2 or Windows 1 Start the ThinkPad Features program 2 Select Power then select Diskette Drive Compartment in the Power for devices menu DOS If you are using DOS use the PS2 command at the command prompt PS2 command...

Page 169: ...e side of the computer do the following 1 Insert the upper portion of the option cover into the computer then insert the lower portion The following figure shows the computer as seen from its front side 2 Push the upper portion of the cover down into the computer until it snaps into place Chapter 6 Installing and Removing Options 153 ...

Page 170: ...e computer do the following Insert the lower portion of the diskette drive bezel into the computer then insert the upper portion Push the upper portion of the bezel down into the computer until it snaps into place The following figure shows the computer as seen from its side 154 IBM ThinkPad 755CX User s Guide ...

Page 171: ... can be used for telephony or modem fax functions without any changes However if a dummy connector plug is attached you need to install the DAA Telephony Kit into your computer to use the Mwave telephony functions To attach the DAA Telephony Kit do the following 1 Turn off the computer then open the port cover on the left side of the computer Warning Make sure the locking lever for the hard disk d...

Page 172: ...Installing the DAA Telephony Kit 3 Slide the latch 1 to the left most position and release the dummy plug 4 Remove the dummy plug 2 from the computer 156 IBM ThinkPad 755CX User s Guide ...

Page 173: ... plug with the round receptacle and firmly press it into the connector Warning Do not leave the lever in its middle position Otherwise you cannot close the keyboard 6 Slide the lever to its right most position until it clicks into place then close the keyboard Chapter 6 Installing and Removing Options 157 ...

Page 174: ...A interface cable 2 to the round receptacle of the DAA c Connect the connector 3 of the ferrite core end of the telephone cable to the square receptacle of the DAA d Connect the other end of the telephone cable to the telephone outlet 4 on the wall Telephone Outlet Core DAA After you have completed attaching the modem fax port install the necessary software by referring to the manual that came wit...

Page 175: ... 2 Mouse and TrackPoint III as a pointing device The PS 2 Mouse is plugged into the external input device connector of the computer and functions normally when the TrackPoint III is not actually moving the cursor Note You can remove the keypad cover 1 and use it as a stand for the keypad If you want to use the external numeric keypad and mouse at the same time first connect the keypad cable to the...

Page 176: ...the following to disable the TrackPoint III OS 2 WIN With OS 2 or Windows do the following 1 Start the ThinkPad Features program 2 Select Setup 3 Select Keyboard Pointing Device 4 Find the TrackPoint then click on Disable to disable the TrackPoint III These changes will become effective when computer power is turned off and then on again DOS With DOS use the PS2 command Enter PS2 at the command pr...

Page 177: ...r the Utility Diskette to install the device driver Using the ThinkPad Features Program OS 2 WIN With OS 2 or Windows do the following 1 Start the ThinkPad Features program 2 Select Setup 3 Select Keyboard Pointing Device 4 Find the TrackPoint then click on Disable to disable the TrackPoint III These changes will become effective when computer power is turned off and then on again DOS With DOS use...

Page 178: ...The following screen appears Type the SOURCE drive leter A Z When you install a program the SOURCE drive letter is the location you are installing FROM Source Drive Enter F1 Help F3 Exit Installation Options Installation Source Drive 3 Press Enter and follow the instructions on the screen until the Installation Options menu appears 4 Select the following according to your operating system If you a...

Page 179: ...pend option in the ThinkPad Features program so the computer does not enter suspend mode when the LCD is closed The external keyboard must be connected through the keyboard mouse connector It will not work if it is connected directly to the computer The external numeric keypad and the numeric keypad on the system keyboard cannot be used when the external keyboard is used ThinkPad Features program ...

Page 180: ...nters with the standard Centronics interface can be attached to the 25 pin parallel connector at the rear of the computer 1 Turn off the computer and attach the printer as shown 2 3 1 2 Turn on the computer and the printer 164 IBM ThinkPad 755CX User s Guide ...

Page 181: ...55CX SVGA model and set the display mode to Both Do not attach the external display that supports only VGA mode 640 by 480 resolution to the computer Otherwise the screen of the external display is disordered and the output is not displayed The screen image on the external display may appear smaller than the actual display size when you use the DOS application that supports only VGA mode When you ...

Page 182: ...and from the command prompt Type PS2 SC BOTH to display information on both the LCD and external display Type PS2 SC CRT to display information on the external display Type PS2 SC LCD to display information on the LCD OS 2 WIN Using the ThinkPad Features program 1 Start the ThinkPad Features program and select the Display icon 2 Select Both to display information on both the LCD and external displ...

Page 183: ...and VSYNC 4 Select your display type from the Monitor Selection list or click on the new resolution and VSYNC refresh rate from the list 5 Click on OK Next change Device Driver settings as follows For OS 2 Warp 1 Open the OS 2 System folder 2 Double click on the System Setup icon then click on the System icon 3 Select the new resolution and the number of colors 4 Restart Warp to make the changes e...

Page 184: ...e virtual screen function is available It is used to display a part of the high resolution screen image that is produced by the computer Other parts can be seen by moving the screen with the TrackPoint III or other pointing device To do this see page 38 168 IBM ThinkPad 755CX User s Guide ...

Page 185: ... display is attached when the computer resumes the LCD will remain blank and the output will not be displayed It does not depend on the resolution value To attach an external display to the computer do the following 1 Turn off the computer 2 Attach the external display to the external display connector as shown 2 3 1 3 Turn on the external display and the computer Chapter 6 Installing and Removing...

Page 186: ...Double click on the System Setup icon then click on the System icon 3 Select the new resolution and the number of colors 4 Restart Warp to make the changes effective For OS 2 V 2 11 or Windows 1 Start the ThinkPad Features program 2 Select the Display icon 3 Select Device Driver 4 Click on the new resolution and color depth then click on OK 5 Restart OS 2 or Windows to make the changes effective 1...

Page 187: ...ached SVGA display according to your operating system For OS 2 V 2 11 For Windows Color Resolution 256 colors 640 by 480 800 by 600 1024 by 768 Color Resolution 256 colors or 64 gray scale 640 by 480 800 by 600 1024 by 768 32768 colors or 65536 colors 640 by 480 800 by 600 Chapter 6 Installing and Removing Options 171 ...

Page 188: ...g up the Dock I or Dock II avoid any hardware conflicts Note When you dock the IBM Dock I or Dock II to the computer see Dock I User s Guide or Dock II User s Guide The following shows the computer attached to the Dock II Hints and Tips When the expansion unit is docked with the computer you can adjust the sound volume of the IBM Dock I by using the following key combinations When you press and ho...

Page 189: ...oft Windows Version 3 11 or Later 177 Installing the ThinkPad Features Program 180 Installing for OS 2 180 Installing for DOS 181 Installing for Windows 182 Installing the PCMCIA Device Driver 183 Installing for OS 2 185 Installing for DOS 186 Installing for Windows 187 Installing the ThinkPad Display Driver 188 Installing for OS 2 Warp 189 Installing for OS 2 V 2 11 189 Installing for Windows 191...

Page 190: ... operate correctly ThinkPad Features program PCMCIA device driver ThinkPad display driver Mwave support software Infrared support software Important If you will be installing Windows Version 3 11 or later you must Install the ThinkPad display driver instead of the default device drivers that came with Windows Version 3 11 Type C to select Custom Setup when the Windows Setup program asks you to sel...

Page 191: ... the ThinkPad Features Program Install the ThinkPad Features for Windows Install the PCMCIA device driver Install the PCMCIA device driver Install the Mwave DSP Support Software Install the Infrared Support Software Install Infrared the Support Software Install the display driver OS 2 Warp OS 2 V 2 11 Install with Advanced Power Management Select the ThinkPad display driver Install the Mwave DSP S...

Page 192: ...d Features Program on page 180 Important When installing the operating system select the choices so that PCMCIA is supported PCMCIA will not be supported if you select Install Preselected Features DOS IBM DOS Version 7 0 or Later Follow the instructions in the operating system documentation Go to Installing the ThinkPad Features Program on page 180 If you are installing Microsoft Windows Version 3...

Page 193: ...e Windows manual b When the Windows Setup program asks you to select Express Setup or Custom Setup type C to select Custom Setup If you have installed OS 2 the path to install Windows might have been changed to C OS2 MDOS WINOS2 C is the drive on which you installed OS 2 If so change the path to C WINDOWS c Continue installing Windows Version 3 11 until the following screen appears Windows Setup S...

Page 194: ...ndows into the diskette drive then type A and press Enter d Select your desired resolution from the menu then press Enter nnn nnn is the resolution type of your display Note Verify that Display has changed to your desired resolution type If the item has not changed return to step 2a If you are not sure which resolution to choose choose 800x600 256 colors small fonts for 755CX SVGA model or 640x480...

Page 195: ...uter must use the mouse driver that came with DOS a At the DOS prompt usually C type E AUTOEXEC BAT then press Enter b Find the line with the MOUSE statement If the line is as the following change it to C WINDOWS MOUSE COM Y c Change it to C DOS MOUSE COM Y d Save the file and restart the system Note When you start Windows from the DOS prompt do not close the LCD while the program is loading if yo...

Page 196: ...2 Double click on Command Prompts 3 Double click on OS 2 Full Screen 2 Install the ThinkPad System Management device driver a Insert the Utility Diskette into the diskette drive b Open the OS 2 full screen command prompt c Type DDINSTAL then press Enter d Click on the Install button e Click on ThinkPad System Management Device Driver then click on OK 3 Open the OS 2 full screen command prompt 4 Go...

Page 197: ... FROM Source Drive Enter F1 Help F3 Exit Installation Options Installation Source Drive 3 Press Enter 4 Select Install DOS ThinkPad Features and Fuel Gauge Program from the Installation Options menu then follow the instructions on the screen You do not need to restart the computer when proceeding to the installation of the PCMCIA device driver You have completed the installation of the ThinkPad Fe...

Page 198: ...u Options Windows Help Program New Open Move Copy Delete Properties Exit Alt Enter Enter F7 F8 Del File Run 3 Insert the Utility Diskette into the diskette drive 4 Type A INSTALLW then press Enter Follow the instructions on the screen You have completed the installation of the ThinkPad Features program PS2 command Page 41 Using PS2 command in the Windows Environment To use the PS2 command in the D...

Page 199: ...d Director PC Card client device drivers only when PC Card Director does not support the PC Card Use the following tables to determine the appropriate installation instructions for the different operating systems For IBM OS 2 V 2 11 Software File Name How to Install Card Services PCMCIA SYS Go to Installing the PCMCIA Device Driver for installation Socket Services IBM2SS01 SYS Resource Map Utility...

Page 200: ...Resource Map Utility DICRMU01 SYS Power Management Utility ICPMDOS SYS PC Card Director EZPLAY EXE EZPLAYW EXE EZPLAYW HLP AUTODRV SYS AUTODRV INI DISKDRV SYS IBMVCD 386 PC Card Client device drivers Varies among PC Cards Refer to the manual that came with the PC Card Auto Configurator for PC Card Director Page 231 With the PCMCIA device driver you can use PC Card Director and Auto Configurator to...

Page 201: ...tart the system 1 Move the cursor to a blank part of your OS 2 Desktop 2 Press the right button of your TrackPoint III or mouse 3 Select Shut down 5 After the installation has been successfully completed close all applications remove the PCMCIA Features Diskette from the diskette drive and restart the system Note Whenever you update the CONFIG SYS file refer to Software Considerations for OS 2 on ...

Page 202: ...s Installation Source Drive 3 Press Enter 4 Select Install DOS PCMCIA Device Drivers from the Installation Options menu then follow the instructions on the screen Note If you are using a software EMS driver such as EMM386 EXE see page 235 Whenever you update the CONFIG SYS file see page 238 5 After the installation has been successfully completed close all applications remove the PCMCIA Features D...

Page 203: ...elp Program New Open Move Copy Delete Properties Exit Alt Enter Enter F7 F8 Del File Run 3 Insert the PCMCIA Features Diskette into the diskette drive 4 Type A PCMINSTW then press Enter 5 Follow the instructions on the screen to complete the installation You have completed the installation of the PCMCIA device driver for Windows If you did not install the display driver when installing Windows go ...

Page 204: ...for your operating system For OS 2 see Installing for OS 2 V 2 11 on page 189 to install OS 2 device drivers including the WIN OS 2 device drivers For Windows if you did not install the display driver when installing Windows see Installing for Windows on page 191 to install Windows device drivers Note You can change the refresh rate of the external display with the PS2 command For DOS display driv...

Page 205: ...pe X DISKIMGS LOADDSKF X DISKIMGS OS2 35 DISP1 DSK A X is the drive for the CD ROM drive 2 Insert another blank diskette into the diskette drive then type X DISKIMGS LOADDSKF X DISKIMGS OS2 35 DISP2 DSK A X is the drive for the CD ROM drive 3 Refer to the README TXT file on the Video Features Diskette for information about the device driver ThinkPad Features program Page 35 Note To open the OS 2 f...

Page 206: ...led on your computer use the default directory on the screen Do not change it If OS 2 has not been preinstalled enter A When you are asked to select the display type select Primary Display then select Western Digital WD90C24 C24A on ThinkPad for the LCD of the computer When you are asked to select the monitor configuration select Install Using Defaults for Monitor Type and follow the instruction W...

Page 207: ...t Display from the Windows Setup menu then select Other Requires disk from the next menu 4 Insert the Video Features Diskette for Windows into the diskette drive then type A and press Enter Note If you are not sure which resolution to choose choose 800x600 256 colors small fonts for 755CX SVGA model or 640x480 256 colors small fonts for 755CX VGA model 5 Select your favorite resolution and colors ...

Page 208: ... Mwave DSP support software If the Mwave DSP Features Diskettes were supplied with your computer install the Mwave support software as follows For OS 2 see Installing for OS 2 For DOS see Installing for DOS on page 194 For Windows see Installing for Windows on page 195 OS 2 Installing for OS 2 Before installing the Mwave support software for OS 2 install Multimedia Presentation Manager 2 MMPM 2 wh...

Page 209: ...e screen 8 After the installation is complete remove any diskette from the diskette drive then restart OS 2 to activate the Mwave support software You have completed the installation of the Mwave support software for OS 2 When You Use the WIN OS 2 Environment If you use the Mwave functions in the WIN OS 2 environment do the following 1 Install the Mwave support software for Windows in a full scree...

Page 210: ...rectory location of Mwave support software appears Please specify the directory for the installation of Mwave products Destination Path OK Cancel c MWD 4 If this directory is acceptable press Enter Otherwise type the directory name then press Enter 5 Follow the instructions on the screen 6 After the installation is complete remove any diskette from the diskette drive then restart DOS to activate t...

Page 211: ...rive 4 Type A SETUP then press Enter The following screen which enables you to specify the directory location of Mwave support software appears Mwave Installation Please enter the desired location for the Mwave files OK Cancel c MWW 5 If this directory is acceptable press Enter Otherwise type the directory name then press Enter 6 Follow the instructions on the screen 7 After the installation is co...

Page 212: ...To go to the DOS command prompt 1 Select OS 2 System 2 Select Command Prompts then select DOS Full Screen 3 Go to the DOS command prompt 4 Insert the Infrared Features Diskette into the diskette drive 5 Type A UINSTALL then press Enter The following screen appears Type the SOURCE drive leter A Z When you install a program the SOURCE drive letter is the location you are installing FROM Source Drive...

Page 213: ... screen appears Type the SOURCE drive leter A Z When you install a program the SOURCE drive letter is the location you are installing FROM Source Drive Enter F1 Help F3 Exit Installation Options Installation Source Drive 4 Press Enter then follow the instructions on the screen You have completed the installation of the infrared device drivers Go to Installing the ThinkPad Display Driver on page 18...

Page 214: ...Installing the Infrared Device Driver 198 IBM ThinkPad 755CX User s Guide ...

Page 215: ...misleading error information or incorrect computer responses When testing non IBM products refer to the instructions supplied with those products Commonly Asked Problems and Actions 200 Testing the Computer 202 Troubleshooting Charts 204 LCD Problems 204 Screen Messages 206 Error Codes 208 General Problems 210 What If Testing Cannot Find the Problem 211 Battery Power Problems 211 Diskette Drive Pr...

Page 216: ...using the ThinkPad Features program P The computer does not resume from suspend mode or the suspend indicator stays on and the computer does not work A The computer automatically enters suspend or hibernation mode when the battery pack is empty Do one of the following Replace the battery pack with a fully charged one Connect the AC Adapter to the computer and charge the battery pack P When using W...

Page 217: ...odem P The battery pack loses power too soon A Repeat the complete discharging and charging procedure two to three times See Preserving Battery Pack Life on page 103 for more information P The battery status indicator blinks A If you use the NiMH battery pack slide the switch on the battery pack to the on position with a ballpoint pen P Error 2XX appears memory error A Make sure your memory card i...

Page 218: ...ans no operating system is installed in your computer Install it now Did one of these screens appear Yes Turn off the computer and continue with step 2 No Go to page 204 2 Press and hold F1 then turn on the computer to start Easy Setup Hold F1 until the following Easy Setup menu appears Date Time Password Easy Setup Start Test Restart Config 3 Did the Easy Setup menu appear on the screen Yes The c...

Page 219: ... 202 If you cannot go beyond the first screen have the computer serviced If an error is detected the character X appears at the left of the affected device and an error code appears below it Record the error code and have the computer serviced If the test does not find a problem but one still exists find the problem in the troubleshooting charts on page 204 No Return to step 2 on page 202 and star...

Page 220: ...not set verify that The brightness control on the computer is correctly adjusted The Display device parameter of the ThinkPad Features program is correctly specified If the preceding items are correct and the screen remains blank have the computer serviced The screen is blank and there is a continuous beep or two or more beeps Have the computer serviced Only the cursor appears Have the computer se...

Page 221: ...er then turn the computer on again The computer goes into suspend mode immediately after the POST The suspend mode indicator turns on Verify that The battery pack is charged The battery power status indicator is green or yellow Keyboard is firmly closed When the external display is attached to the computer the Will not suspend even if LCD is closed option in the Suspend Resume options of the Think...

Page 222: ...r on or supervisor password was set To use the computer type the correct password and press Enter see page 110 If the power on password is not accepted a supervisor password might have been set Type the supervisor password and press Enter If there is still a problem have the computer serviced Hard disk password prompt A hard disk password was set To use the computer type the correct password and p...

Page 223: ...code and have the computer serviced Error prompt Turn off the computer and start Easy Setup then select Test to test the computer You can start the operating system by pressing F1 instead and ignore the error A screen or message that is not listed Turn off the computer and start Easy Setup then select Test to test the computer If you cannot start Easy Setup have the computer serviced Chapter 8 Sol...

Page 224: ...ter 7 Turn on the computer If the same screen message appears have the computer serviced I99xxxxx Have the computer serviced 111 If you are using a Port Replicator or an expansion unit disconnect it then reconnect it If there is still a problem have the computer serviced 158 A hard disk drive without a hard disk password is installed when a supervisor password is set Action 1 Press Enter The passw...

Page 225: ... or DIMM option is correctly installed 30x Turn off the computer and all attached devices Turn on the computer first then turn on the attached devices If the computer has an external keyboard connected verify that 1 The external keyboard is connected to the correct side of the keyboard mouse connector see page 163 2 The keyboard mouse connector is correctly connected to the computer If the precedi...

Page 226: ...r or install a fully charged battery pack to the computer then resume it If there is still a problem press the Power Shutdown switch on the rear of the computer with the tip of a pen to turn off the computer The application locks up or the computer does not accept any input Press the Power Shutdown switch on the rear of the computer with the tip of a pen to turn off the computer then turn the comp...

Page 227: ...is either old or its operation time has been shortened by repeatedly charging it when it was not completely discharged Action 1 Check if the battery pack you are using has been charged for more than 2 hours by the power off charging method 2 If so repeat the complete discharging and charging procedure three to six times see page 98 Note A fully charged battery gradually loses its power when not us...

Page 228: ... battery pack the battery power status indicator blinks green yellow orange and then green again No battery status information is going from the battery pack to the computer Check that the storage switch on the battery pack is set to the on position If it is set to the off position O slide it to on and repeat the discharging and charging procedure several times see page 98 If the storage switch is...

Page 229: ...ving performance Configure Windows to use the VGA display driver rather than a higher resolution or less efficient driver Determine if your game allows you to turn off background music and only play special effects The modem does not work correctly Verify that The modem fax port is securely installed The modem is correctly identified in your communication program This is often caused by a conflict...

Page 230: ...ing the infrared port on the computer Verify that The infrared function is enabled and other choices are set correctly in the ThinkPad Setup menu of the ThinkPad Features program see page 35 The communicating device is using an equivalent communication speed The infrared ports are cleaned and no spotty area exist No cable or electrical device is between the computer and the communicating device Th...

Page 231: ...ive for help Problem Action An IBM option that was just installed does not work Verify that The option is designed for the computer The option has been installed correctly by following the instructions supplied with the option Other installed options or cables are not loose No I O address or interrupt level conflict has occurred Use the System Info of the ThinkPad Features program If the test prog...

Page 232: ...t you must enter the password If the external keyboard is connected the numeric keypad on the system keyboard will not work If the external numeric keypad or the mouse is connected 1 Turn off the computer 2 Remove the external numeric keypad or the mouse 3 Turn on the computer and try the keyboard operation again If the keyboard problem is resolved check the connection of the external numeric keyp...

Page 233: ...ckPoint III 2 For DOS see page 41 All or some keys on the external numeric keypad do not work Verify that the external numeric keypad is correctly connected to the computer All or some keys on the external keyboard do not work Verify that The keyboard connector is connected to the correct side of the keyboard mouse connector The keyboard mouse connector is correctly connected to the computer If th...

Page 234: ...orrect and the screen of the external display remains blank run the display tests described in the instructions supplied with the external display If the tests show the external display is OK have the computer serviced The screen is unreadable or distorted Verify that The ThinkPad display driver is installed correctly see page 188 The Display in the Windows Setup screen is set to your display reso...

Page 235: ...ell and set the screen mode 800 by 600 resolution by PS2 MODE3X command do the following 1 At the DOS Shell screen select Options from the menu bar then select Display 2 Select Graphics 30 lines Medium Resolution 1 then select OK The screen will recover If you are using other application than DOS Shell do the following At the DOS command prompt type PS2 MODE3X OFF then press Enter Chapter 8 Solvin...

Page 236: ...ow that the printer is OK have the computer serviced Problem Action The computer has an intermittent problem An intermittent problem can be difficult to find Check that all cables and cords are securely connected to the rear of the computer and to the attached options If the problem occurs only when the computer is powered by a battery pack replace the battery pack with a fully charged one If the ...

Page 237: ...ns you have in your system Check or write the names of your options below IC DRAM Card 2MB 4MB 8MB or 16MB Option in the Diskette Drive Compartment DIMM 4MB 8MB or 16MB DIMM Adapter Internal Diskette Drive Battery Pack PC Cards ______MB Hard Disk Drive Others Chapter 8 Solving Computer Problems 221 ...

Page 238: ...epair services The machine type and serial number 1 are located on the bottom of the computer The machine type has a prefix of Type The serial number has a prefix of S N 1 IBM Product Name ThinkPad 755CX SVGA model ThinkPad 755CX VGA model Machine Type Serial Number 222 IBM ThinkPad 755CX User s Guide ...

Page 239: ...s can help identify what service action is required and help the service representative provide quick and efficient service Important During the warranty period you may be responsible for repair costs if the product damage was due to misuse accident modification unsuitable physical or operating environment or improper maintenance by you For your convenience write the service phone numbers here Cha...

Page 240: ...he phone Complete peace of mind 24 hours a day 7 days a week 365 days a year Helpware Magazine hints and tips for all With your free membership of HelpClub you will receive a free subscription to Helpware magazine We like to say it s one of the best PC magazines around and you don t have to take our word for it It has already won two publishing awards and 8 out of 10 HelpClub members tell us it s ...

Page 241: ...l 4600 Finland 9800 6100 France 16 38 55 20 39 Germany 0231 9748 405 Italy 1678 36019 Luxembourg 02 542 5360 Netherlands 020 513 4700 Norway 66 99 95 95 Spain 91 563 10 01 Sweden 020 55 55 55 Switzerland 155 46 46 United Kingdom 0628 895222 For other countries Contact your local IBM office for service information Chapter 8 Solving Computer Problems 225 ...

Page 242: ...Getting Service 226 IBM ThinkPad 755CX User s Guide ...

Page 243: ...ions for the computer and the ThinkPad Dock I or Dock II and select the available resource values OS 2 WIN If you are using OS 2 or Windows do the following 1 Start the ThinkPad Features program 2 Select ThinkPad Setup 3 Select the icon you want to set up in the ThinkPad Setup window 4 Click on the appropriate resources IRQ DMA or Memory to assign for the device These changes will become effective...

Page 244: ...disabled None 0378 037A None Parallel port 3 5 or disabled None 0278 027A None Infrared port 4 or 3 5 10 11 15 disabled None 01A0 01A7 or 01B0 01B7 01C0 01C7 01D0 01D7 02E8 02EF or 03F8 03FF 02F8 02FF 03E8 03EF 0 and 3 or disable Diskette controller 6 None 03F0 03F7 2 Video controller 9 A0000 BFFFF 03B4 03B5 03BA 03C0 03C9 03CA 03CC 03CE 03CF 03D4 03D5 03DA 2DF0 2DF1 46E8 None Mwave DSP device 5 o...

Page 245: ...rt and a parallel port of the computer Selectable in the ThinkPad Features program or PS2 command VL Bus master is used The IRQ for PC Card depends on the PC Card type Selectable in the Resource Map Utility program See Software Considerations for DOS on page 235 Select an IRQ and the memory addresses with a jumper and switch on the main board of Dock I Dock II See the Dock I User s Guide or Dock I...

Page 246: ...Avoiding Hardware Conflicts 230 IBM ThinkPad 755CX User s Guide ...

Page 247: ... Cards When installing an operating system install the PCMCIA device driver that is on the PCMCIA Features Diskette so you can use the Auto Configurator program When Auto Configurator is installed the following line is added to the CONFIG SYS file For OS 2 DEVICE DRIVE PATH AUTODRV2 SYS DRIVE PATH AUTODRV2 INI For DOS or Windows DEVICE DRIVE PATH AUTODRV SYS DRIVE PATH AUTODRV INI The basic struct...

Page 248: ...ard that does not contain enough tuple data If the Auto Configurator cannot recognize the modem card installed into the PC Card slot you must add the modem card identification indicated in the level 1 version product information tuple The identification must be written using up to five uppercase ASCII characters If you want to display this character string use the DOS PC Card Utility EZPLAY EXE Wi...

Page 249: ...se address of the memory window given as a hexadecimal segment address Memory window 1 must be within the range of the memory area reserved for Card Services The Card Services memory area is specified using the Resource Map Utility In the preceding example the memory area for Card Services is from X D000 to X D7FF and the 3270 memory area is specified by Memory1 of the data file The memory area X ...

Page 250: ...to update the CONFIG SYS file after you have installed the PCMCIA software If you make any changes to your CONFIG SYS file keep in mind the following rules for PCMCIA software Rule 1 The Card Services driver PCMCIA SYS must be listed before any other PCMCIA drivers The Resource Map Utility ICRMU01 SYS and Socket Services driver IBM2SS01 SYS must be listed in this order These modules must be listed...

Page 251: ...her To determine the required memory space of the PC Card refer to the manual that came with the PC Card You should allocate at least 34KB of memory to the DOS Card Services IBMDOSCS SYS The hardware interrupt level of the PC Card and the adapter must be assigned exclusively To avoid a conflict use the Resource Map Utility DICRMU01 SYS with the following parameters DEVICE drive path DICRMU 1 SYS M...

Page 252: ...ter must be the same as or included in the memory range specified by the X parameter 5 Change this statement to DEVICE C DICRMU 1 SYS MA C8 CFFF IX 11 6 Save the changes in your CONFIG SYS file then restart the system Interrupt request level 11 cannot be used by the PC Card After you complete these steps the memory map will be as follows C000 0 C800 0 D000 0 D800 0 E000 0 EMS Adapter in expansion ...

Page 253: ...PAD IBMDSS 1 SYS DEVICE C THINKPAD IBMDOSCS SYS DEVICE C THINKPAD DICRMU 1 SYS MA C3 CFFF modified DEVICE C THINKPAD ICPMDOS SYS DEVICE C DOS POWER EXE DEVICE C THINKPAD AUTODRV SYS C THINKPAD AUTODRV INI DEVICE C THINKPAD DISKDRV SYS DEVICE C LSP PROTMAN DOC I C LSP LSP adds this line DEVICE C LSP PCMNICCS DOC LSP adds this line DEVICE C LSP IBMTOKCS DOC LSP adds this line DEVICE C LSP DXMA MOD S...

Page 254: ... EXE RAM 1 24 frame D X C8 CFFF Rule 1 DEVICE C THINKPAD IBMDSS 1 SYS D Rule 2 DEVICE C THINKPAD IBMDOSCS SYS Rule 2 DEVICE C THINKPAD DICRMU 1 SYS MA C8 CFFF Rule 2 DEVICE C THINKPAD ICPMDOS SYS Rule 2 DEVICE C THINKPAD AUTODRV SYS C THINKPAD AUTODRV INI DEVICE C THINKPAD DISKDRV SYS DEVICE C DOS POWER EXE Rule 3 DEVICE PC_Card_Client_device_driver Rule 4 You might need to update the CONFIG SYS f...

Page 255: ...vices driver IBMDSS01 SYS Card Services driver IBMDOSCS SYS Resource Map Utility DICRMU01 SYS and Power Management Utility ICPMDOS SYS must be listed in this order Rule 3 The Advanced Power Management driver POWER EXE must be specified in the CONFIG SYS file This is installed with DOS Rule 4 The PC Card Client device drivers must be listed after all other PCMCIA drivers If you do not use the PC Ca...

Page 256: ...CIAOF command Type PCMCIAOF at the command prompt usually C This converts the PCMCIA DEVICE statements to comments The CONFIG SYS file will look like this DEVICE C DOS EMM386 EXE 1 24 frame D X C8 CFFF REM DEVICE C THINKPAD IBMDSS 1 SYS D REM DEVICE C THINKPAD IBMDOSCS SYS REM DEVICE C THINKPAD DICRMU 1 SYS MA C8 CFFF REM DEVICE C THINKPAD ICPMDOS SYS REM DEVICE C THINKPAD AUTODRV SYS C THINKPAD A...

Page 257: ...Services Client MENUITEM INTLNK Load InterLnk Client MENUITEM CPSW Load Code Page Switching MENUITEM PCMCIA Load IBM PCMCIA drivers MENUCOLOR 7 1 MENUDEFAULT DLS 2 COMMON DEVICE C DOS HIMEM SYS DEVICE C DOS EMM386 EXE DLS DEVICEHIGH C NET protman dos i C NET DEVICEHIGH C NET dlshep sys DEVICEHIGH C NET ibmtok dos INTLNK DEVICEHIGH C DOS INTERLNK EXE PCMCIA DEVICE C THINKPAD IBMDSS 1 SYS D DEVICE C...

Page 258: ...SYSTEM INI file as follows 1 Open your CONFIG SYS file using a text editor 2 Find DEVICE drive path DICRMU 1 SYS MA mmmm mmmm 3 Note the address range of the PCMCIA device drivers mmmm mmmm then close the CONFIG SYS file and open the SYSTEM INI file of Windows 4 Add the following line to the 386Enh section of the SYSTEM INI file EMMEXCLUDE mmmm mmmm The parameters for MA and EMMEXCLUDE must be the...

Page 259: ...with the Windows MultiMedia Extensions MME for audio for example Windows Sound Recorder and Windows Media Player that are shipped with Windows Version 3 11 In general recording audio music and speech at higher quality requires more disk storage The following table shows some typical values for various sampling rates Sample Rate Sample Size Frequency Range Signal Noise Ratio Remarks 44 1 KHz 16 bit...

Page 260: ...re located immediately adjacent to the computer The angular displacement of the speakers to the listener s left and right is ordinarily not enough to produce a decent stereo effect But with QSound processing the listener can perceive sound coming from a variety of directions some of which are significantly further to the left and right than the actual location of the speakers The net result is a s...

Page 261: ...r setups If all channels were played at once both versions of a MIDI composition would play at the same time The Mwave Windows synthesizer usually sounds best when the Mwave EXT GM setup is selected in the MIDI Mapper If you have a MIDI file that is not producing sound on your Mwave feature MIDI commands may be being sent on a set of channels the MIDI Mapper is not responding to Try using the Wind...

Page 262: ...s rapid small changes in the pitch of a note and is usually controlled by a thumb wheel on a MIDI keyboard Vibrato depth can be varied 2 semitones It is received on control number 1 Sustain Each note of an instrument has an envelope that describes the loudness of the note during attack decay sustain and release periods Some MIDI keyboards can be used with a pianolike sustain pedal that prolongs th...

Page 263: ...y message via a telephone facsimile machine unless such message clearly contains in a margin at the top or bottom of each transmitted page or on the first page of the transmission the date and time it is sent and an identification of the business other entity or individual sending the message and the telephone number of the sending machine or such business other entity or individual In order to pr...

Page 264: ...Additional Information for Telephony Function 248 IBM ThinkPad 755CX User s Guide ...

Page 265: ...2 5 inch removable hard disk drive 3 5 inch removable diskette drive Display TFT color LCD supporting up to 65536 colors 10 4 inches when measured diagonally SVGA 800 by 600 resolution on the LCD of the 755CX SVGA model or VGA 640 by 480 on the LCD of the 755CX VGA model SVGA 1024 by 768 and 800 by 600 resolution on the external display Brightness control Keyboard 84 key 85 key or 89 key TrackPoin...

Page 266: ...ne Type III PC Card Headphone jack Microphone line in jack supports a dynamic microphone or a self battery powered condenser microphone Fax modem port in some countries available as an option Infrared ports System bus 240 pin 16 bit AT bus connector 250 IBM ThinkPad 755CX User s Guide ...

Page 267: ... to 95 F Non operating 5 to 43 C 41 to 109 F Relative Humidity Operating1 8 to 95 Operating2 8 to 80 Maximum altitude 3048 m 10000 ft 3 Maximum temperature at 3048 m 10000 ft 31 3 C 88 F Heat output Approximately 136 5 British thermal units BTUs per hour 35 0 watts Electrical AC Adapter Sine wave input at 50 to 60 Hz is required The input rating of the AC Adapter 100 240 V ac 50 60 Hz Battery pack...

Page 268: ...t in length and a parallel blade grounding type attachment plug rated 15 amperes 125 volts For units intended to be operated at 230 volts in the U S Use a UL listed and CSA certified cord set consisting of a minimum 18 AWG Type SVT or SJT three conductor cord a maximum of 15 feet in length and a tandem blade grounding type attachment plug rated 15 amperes 250 volts For units intended to be operate...

Page 269: ...est Indies United States of America Venezuela 25H2219 Thailand 25H2209 Austria Belgium Bulgaria Czech Republic Egypt Finland France Germany Greece Hungary Iceland Indonesia Netherlands Norway Poland Portugal Romania Slovakia Spain Sweden Turkey former Yugoslavia 25H2211 Denmark 25H2213 Bangladesh Pakistan South Africa Sri Lanka 25H2215 Abu Dhabi Albania Antigua Bahrain Brunei Dubai Fiji Hong Kong ...

Page 270: ...n National Standards Institute X3 137 ISO International Standards Organization 8860 ECMA European Computer Manufacturers Association 100 2MB 3 5 inch unformatted diskette ANSI X3 171 ISO 9529 ECMA 125 Note In some country 4MB diskettes can be used when the diskette drive option is installed 4MB 3 5 inch unformatted diskette ANSI Standard under proposal at the time of printing ISO 10994 Type 303 EC...

Page 271: ... warranty service under the type of service designated for the Machine and will manage and install engineering changes that apply to the Machine IBM or your reseller will specify the type of service For a feature conversion or upgrade IBM or your reseller may require that the Machine on which it is installed be 1 the designated serial numbered Machine and 2 at an engineering change level compatibl...

Page 272: ...ESS OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE HOWEVER SOME LAWS DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES IF THESE LAWS APPLY THEN ALL EXPRESS AND IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE WARRANTY PERIOD NO WARRANTIES APPLY AFTER THAT PERIOD In Canada warranties include both warranties and conditions Some ...

Page 273: ...Warranties and Notices This warranty gives you specific legal rights and you may also have other rights which vary from jurisdiction to jurisdiction Appendix E Product Warranties and Notices 257 ...

Page 274: ...pe of service designated for the Machine and will manage and install engineering changes that apply to the Machine IBM or your reseller will specify the type of service For a feature conversion or upgrade IBM or your reseller may require that the Machine on which it is installed be 1 the designated serial numbered Machine and 2 at an engineering change level compatible with the feature conversion ...

Page 275: ...R IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE HOWEVER SOME LAWS DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES IF THESE LAWS APPLY THEN ALL EXPRESS AND IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE WARRANTY PERIOD NO WARRANTIES APPLY AFTER THAT PERIOD In Canada warranties include both warranties and conditions Some juris...

Page 276: ...Warranties and Notices This warranty gives you specific legal rights and you may also have other rights which vary from jurisdiction to jurisdiction 260 IBM ThinkPad 755CX User s Guide ...

Page 277: ...irector of Licensing IBM Corporation 500 Columbus Avenue Thornwood NY 10594 U S A Trademarks The following terms used in this publication are trademarks of the IBM Corporation in the United States or other countries or both The following terms denoted by a double asterisk in this publication are trademarks of other companies as follows AT OS 2 IBM PS 2 MMPM 2 ThinkPad Multimedia Presentation Manag...

Page 278: ...ogies Ltd PRODIGY Prodigy Services Inc QSound QSound Inc Sharp Sharp Corporation Sound Blaster Creative Labs Inc UL Underwriters Laboratory Western Digital Western Digital Corporation Windows Microsoft Corporation Wizard Sharp Corporation 262 IBM ThinkPad 755CX User s Guide ...

Page 279: ...authorized changes or modifications could void the user s authority to operate the equipment This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Telephone Company Requirements Part 68 o...

Page 280: ...tact your Authorized Seller or the IBM Corporation for information 8 The modem may not be used on coin service provided by the telephone company Connection to party lines is subject to state tariffs Contact your state public utility commission or corporation commission for information 9 When ordering network interface NI service from the Local Exchange Carrier specify service arrangement USOC RJ11...

Page 281: ... indication no more than 2 pauses of four seconds duration each should be inserted between the initial PSTN access digit and the number to be dialled This is to avoid interference to the BT network 6 If a modem is to be used with a PBX which has extension wiring owned by BT connection of the modem to the PBX can only be carried out by BT or by the authorized maintainer of the PBX unless the author...

Page 282: ...lled in the ThinkPad 755CX is approved separately and has its own independent approval number This modem supplied by IBM does not contain excessive voltages An excessive voltage is one which exceeds 42 4 v peak ac or 60 v dc It interfaces with the ThinkPad computer using Safe Extra Low Voltages only To maintain the independent approval of the IBM adapters it is essential that other optional cards ...

Page 283: ...Pad 755CX voice connection application programs must be designed with the following considerations Auto Calling 1 Network addresses When using the auto calling to initiate outgoing calls to the PSTN the user must ensure all manually entered network address are correctly programmed Any adjustments which might affect compliance with the U K requirements are described in the User and Installation Gui...

Page 284: ...10 minutes 4th repeat attempt 1 minute 2 minutes 10 minutes 5th repeat attempt End of sequence See note 1 2 minutes 10 minutes 6th repeat attempt 2 minutes 10 minutes 7th repeat attempt End of sequence See note 1 10 minutes nth repeat attempt See note 2 10 minutes Notes 1 The maximum number of calls for repeat attempt pattern A is 5 and for call pattern B is 7 2 No limit is specified for the value...

Page 285: ... directly addressable 2 In multimedia applications a form of graphics in an area of computer memory or storage that can be displayed as an image boot To prepare a computer system for operation by loading an operating system bps Bits per second In serial transmission the instantaneous bit speed with which a device or channel transmits a character bus A facility for transferring data between several...

Page 286: ...hard disk During hibernation the computer is automatically turned off to save power When power is turned on again the computer immediately restores the same data and applications as when hibernation started without restarting the operating system high performance mode A method of increasing the access time of video memories for dual scan STN LCDs to produce high quality video on an external displa...

Page 287: ... direction from a point or line at or near the top of the screen reboot Restart all operations of the computer as if the power were just turned on resume To begin computer operations again from suspend mode ROM Read only memory serial port A port used to attach such devices as display devices letter quality printers modems plotters and such pointing devices as light pens and mice it transmits data...

Page 288: ...272 IBM ThinkPad 755CX User s Guide ...

Page 289: ...time 20 92 preserving battery pack life 103 problems 211 replacing 95 battery pack continued storage switch 21 battery power status indicator 16 96 bidirectional parallel 43 boot diskette 79 boot selectable 47 brightness control location and function 13 broken keylock 210 bus system 249 C Caps Lock indicator 17 car battery adapter 22 carrying the computer 31 changing password hard disk password 11...

Page 290: ...es 208 expansion unit attaching 172 speaker volume control using Fn key 49 external devices Dock I or II 172 external devices continued external display 165 external keyboard 163 external numeric keypad 159 external unit 172 modem fax port 155 mouse 159 printer 164 external display attaching 165 color depth changing 170 connector 5 15 display driver setting 167 problem 27 screen resolution changin...

Page 291: ...ystems 176 option cover 153 PC Card 134 intermittent problems 220 internal devices in diskette drive compartment 150 securing 130 interrupt level IRQ 227 IR infrared communication 72 IRQ 227 K Kensington lock keyhole 5 13 using 131 keyboard Easy Setup 43 location 13 machine specifications 249 securing from opening 130 template 3 keyboard mouse connector 163 L LCD location and function 13 problems ...

Page 292: ...eric lock indicator 17 O online book 29 operating systems installing DOS 176 OS 2 176 Windows 177 option cover option cover continued installing 153 location and function 15 removing 150 options DIMM 137 installing 138 removing 143 diskette drive problems 213 removing 138 Dock I or II attaching 172 expansion unit attaching 172 external display attaching 165 problems 218 external keyboard attaching...

Page 293: ... updating CONFIG SYS file 238 using 61 PC Card Director PC Card Director continued installing for DOS 186 installing for OS 2 185 installing for Windows 187 using 62 PCMCIA card See PC Card PCMCIA device driver installing for DOS 186 installing for OS 2 185 installing for Windows 187 PCMCIA Features Diskette 3 PCMCIA slot 5 location and function 13 personalization utility 125 pointing device 159 p...

Page 294: ... password 121 repair services getting service 223 HelpClub 224 identification numbers 222 resource map utility 229 restart menu Easy Setup 46 resume function 50 RPL remote program load 47 S safe suspend 54 screen messages date and time prompt 34 F1 and diskette prompts 34 hard disk password prompt 34 power on password prompt 34 power on self test POST error 34 scroll lock indicator 17 security har...

Page 295: ... setting 165 system bus machine specifications 249 system expansion connector 5 location and function 15 system status indicators 16 battery charging status 16 battery power status 16 caps lock 17 diskette drive in use 16 hard disk in use 16 numeric lock 17 system status indicators continued PC Card active 16 power on 17 scroll lock 17 speaker 16 suspend mode 17 systemboard Easy Setup 43 T telepho...

Page 296: ...ver Video Features Diskette 3 virtual screen 38 volume control location and function 13 W warranties and notices product 255 weight machine specifications 251 Windows Version 3 11 or later installing 177 280 IBM ThinkPad 755CX User s Guide ...

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