Page 2 IBM may have patents or pending patent applications covering subject matter in this document. The furnishing of this document does not give you any license to these patents. You can send license inquiries, in writing, to the IBM Director of Licensing, IBM Corporation, 500 Columbus Avenue, Thornwood, NY 10594, U.S.A.
Page 3 Thank You for Selecting an IBM ThinkPad 755CX Computer The IBM 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.
Page 4 Mwave DSP Audio, Telephony, and Data/Fax Modem Features Long-Life Battery Pack Infrared Communication PCMCIA Support Support TrackPoint III ThinkPad Features Program Easy-Setup Thinkpad Features Config Restart TFT Color LCD Screen Power Management Fn Key Function Security Features IBM ThinkPad 755CX User's Guide...
Page 5 Mwave DSP audio, telephony, and fax/modem features The ThinkPad Mwave digital signal processor (DSP) provides high-quality audio, telephony and modem/fax functions. With a built-in speaker and a microphone, they complete your multimedia computing solution. (See page 75.) Note: In some countries, the Mwave telephony functions are available only after the DAA/Telephony Kit option is installed.
Page 6 IBM ThinkPad 755CX User's Guide...
Page 7: About This Book
About This Book This User's Guide contains information that will help you operate the IBM ThinkPad 755CX computer (hereafter called 755CX or computer ). Chapter 1, “Getting Started,” describes the Product Map and explains how to set up your computer.
Page 8: Treatment Of Icons
Information for IBM Operating Information for DOS users. System/2 (OS/2) users. OS/2 Where to go for other information. Information for Microsoft Windows users. viii IBM ThinkPad 755CX User's Guide...
Page 9 Electrical Safety Notice DANGER: Electrical current from power, telephone, and communication cable is hazardous. To avoid shock hazard, connect and disconnect cables as shown below when installing, moving, or opening the covers of this product or attached the devices. The power cord must be used with a properly grounded outlet. To Connect To Disconnect Turn everything OFF.
Page 10 CAUTION: The nickel metal hydride rechargeable 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.
Page 11: Table Of Contents
Limitations of Operation during Suspend and Hibernation Modes ....... Copyright IBM Corp. 1995...
Page 12 Replacing the Hard Disk Drive ....Installing Options in the Diskette Drive Compartment ..IBM ThinkPad 755CX User's Guide...
Page 13 Using the Mouse and Other Pointing Devices ..Using a Mouse on the IBM ThinkPad Space Saver Keyboard 161 Attaching an External Keyboard ....
Page 14 Getting Service ......The IBM HelpClub: Another Great Choice (for European Countries) ......
Page 15 Appendix E. Product Warranties and Notices ..Notices ....... . . Trademarks .
Page 16 IBM ThinkPad 755CX User's Guide...
Page 17: Chapter 1. Getting Started
Chapter 1. Getting Started Welcome to the world of ThinkPad computers! The IBM ThinkPad 755CX is one of the most 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.
Page 18: About The Product Map
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. IBM ThinkPad 755CX User's Guide...
Page 19 Follow the prompts that appear when the computer is turned on for the first time. You can also purchase the diskettes; call 1-800-772-2227 for purchasing information in the U.S., or contact your IBM authorized reseller or IBM marketing representative.
Page 20: Other Symbols On The Product Map
Getting 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. IBM ThinkPad 755CX User's Guide...
Page 21 Getting Started The serial connector is where you The external keyboard connects The modem/fax port is where you connect a 9-pin, serial-device cable. to the external input-device connect a telephone connector or connector through the attachment. keyboard/mouse connector. Note: This is offered as an option The parallel connector is where in some countries.
Page 22: Setting Up Your Computer
Do not soak the battery pack in water or expose it to rain. Do not attempt to disassemble the battery pack. Avoid mechanical shocks to the battery. Always use battery packs recommended by IBM. Keep the battery pack away from children. IBM ThinkPad 755CX User's Guide...
Page 23 Getting Started Right Side View Chapter 1. Getting Started...
Page 24 Install your application programs by following To set the date and time, see “Using the instructions in the documentation that Easy-Setup” on page 42. came with the programs. Congratulations! You have successfully completed the basic setup of your computer! IBM ThinkPad 755CX User's Guide...
Page 25 Getting Started Chapter 1. Getting Started...
Page 26 Getting Started IBM ThinkPad 755CX User's Guide...
Page 27: Chapter 2. Getting Familiar With Your Computer
... Carrying the Computer ......Copyright IBM Corp. 1995...
Page 28: Locations And Functions
Locations and Functions Locations and Functions This section provides additional useful information about your computer. Front View IBM ThinkPad 755CX User's Guide...
Page 29 Locations and Functions The color LCD screen, which The indicator panel consists The click buttons are used uses a thin film transistor (TFT) of the system-status indicators with the TrackPoint III. technology, displays the and their associated symbols. The front infrared port allows computer output and can be These indicators show the the computer to communicate...
Page 30 Locations and Functions Inside View Bottom View Rear View IBM ThinkPad 755CX User's Guide...
Page 31 The system-expansion (See page 20.) connector is used to connect the IBM Dock I, The removable hard disk Dock II, or Port Replicator. drive can be replaced with one (See page 172.) with a different capacity.
Page 32: System-Status Indicators
Hard disk in use Orange Turns on when data is read from or written to the hard disk. Do not enter suspend mode or turn off the computer when this indicator is IBM ThinkPad 755CX User's Guide...
Page 33 System-Status Indicators Symbol Color Meaning Numeric lock Green Indicates that the numeric keypad on the keyboard is enabled. The keypad is enabled and disabled by pressing and holding the Shift key, and pressing the NumLk key. For more information about the numeric keypad, see “Operating the Numeric Keypad”...
Page 34: Providing Power
Always use the AC Adapter will hear a short beep when you connect or disconnect the AC certified by IBM in the country Adapter from the computer. This short beep means that the power where you will be using the source has been changed.
Page 35 Providing 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: Chapter 2. Getting Familiar with Your Computer...
Page 36: Battery Pack
To operate your computer 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...
Page 37 Providing Power Nickel Metal Hydride Battery Pack The following table shows the operating time of the computer with a fully charged nickel metal hydride battery pack (hereafter called NiMH battery pack ): Note: Model Battery Operating Time * The operating time depends on the options used with the computer, 755CX SVGA model 2.4 —...
Page 38: Car Battery Adapter
The standby battery can be replaced only by your IBM authorized reseller or IBM marketing representative. To charge the standby battery, connect the AC Adapter to the computer.
Page 39: Operating With The Trackpoint Iii
Using the TrackPoint III Operating with the TrackPoint III Note: The keyboard contains a unique cursor-pointing device called the No other software is required for the TrackPoint III . Pointing, selecting, and dragging all become part of TrackPoint III; it works with the a single process, without moving your fingers from their typing PS/2 mouse driver.
Page 40 The click button locks in place; you can now drag the object across the screen with the TrackPoint III stick without holding down the click button. To release the latch, press it from the front side of the click button. IBM ThinkPad 755CX User's Guide...
Page 41: Changing The Cap
Using the TrackPoint III Changing the Cap The cap 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...
Page 42: Operating The Numeric Keypad
The keys are functional, but the use the cursor- and screen-control keys. function of the key is not printed on the keytop. NumLk PgUp Home PgDn To disable the numeric keypad, press and hold Shift; then press NumLk again. IBM ThinkPad 755CX User's Guide...
Page 43: Using The Display
Using the Display Using the Display The LCD of your computer supports the following video mode for each model: The 755CX SVGA model supports VGA (640-by-480 resolution) video mode and SVGA (800-by-600) video mode. The 755CX VGA model supports VGA (640-by-480) video mode only.
Page 44: Using A Dos Application With Your 755Cx Svga Model
LCD and same size as of LCD and 640 x 480 looks smaller the actual looks smaller than the actual screen size. than the actual LCD size. LCD size. IBM ThinkPad 755CX User's Guide...
Page 45: Using The Online Book
Using the Online Book Using the Online Book Notes: You can view this User's Guide online to retrieve information when the hardcopy book is not available. The online book provides a very The online book is not available easy way of getting needed information when you are traveling. in all countries.
Page 46: Keeping The Computer From Being Damaged
Occasionally clean your computer as follows: Use a soft cloth moistened with nonalkaline detergent to wipe the exterior of the computer. Gently wipe the LCD with a dry, soft cloth. Do not use alcohol or detergent. IBM ThinkPad 755CX User's Guide...
Page 47: Carrying The Computer
IBM marketing representative in that country. For information about power cords, see “IBM Power Cords” on page 252. 3. A carrying case is available from your IBM authorized reseller or IBM marketing representative. Chapter 2. Getting Familiar with Your Computer...
Page 48 Carrying the Computer IBM ThinkPad 755CX User's Guide...
Page 49: Chapter 3. Operating Your Computer
..... . Mwave Telephone Answering Machine ... Copyright IBM Corp. 1995...
Page 50: What Happens When Power Is Turned On
This icon appears when a power-on password is set. To start the computer, enter the correct password. This icon appears when a hard-disk password is set. To unlock the hard disk drive, enter the correct password. IBM ThinkPad 755CX User's Guide...
Page 51: Using The Thinkpad Features Program
Using the ThinkPad Features Program Using the ThinkPad Features Program To install the ThinkPad ThinkPad Features is a program that allows you to select various Features program: features for your computer. The following shows the structure of the Page 180. ThinkPad Features program: ThinkPad Features XX XXXXX...
Page 52: Using The Program For Os/2 And Windows
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 information on each menu item, click on this button. IBM ThinkPad 755CX User's Guide...
Page 53 Using the ThinkPad Features Program Power Menu Power When you select this icon, you can set power-saving options: Power Mode for battery operation and AC Adapter operation. You can select one of the following power modes: Note: Power Mode * The values for both High Power-Saving High Performance mode and Automatic...
Page 54 You can also enable or disable the speaker indicator (see page 16) when the Note: speaker sounds. You can adjust the volume with the volume control. See page 12. IBM ThinkPad 755CX User's Guide...
Page 55 Using the ThinkPad Features Program ThinkPad Setup Menu This menu allows you to view or set the following: ThinkPad Setup System Info This shows you the system specifications and assigned resources (interrupt levels, DMA channel, and memory assignment) in the system. Keyboard/Pointing Device This allows you to enable the TrackPoint III.
Page 56 These appear only when a password is set. Personalization Personalization Utility program: Page 125. The Docking Control Utility program allows you to attach the IBM Dock II to the computer without turning off the power. Docking Control Note:...
Page 57: Using The Ps2 Program
Using the ThinkPad Features Program Using the PS2 Program OS/2 Note: To start the PS2 program, type PS2 or PS2 ? at the command To use the PS2 program in OS/2, prompt; the press Enter. The following help screen appears: you need to install the program using the same procedure as when installing for DOS.
Page 58: Using Easy-Setup
): Highlight the item from the menu. Spacebar: Selects the item. Enter key: Enters the next menu, or saves the changes and exits the menu. Esc key: Returns to the previous menu, or cancels the changes. IBM ThinkPad 755CX User's Guide...
Page 59 Using Easy-Setup Config contains the following: Config Parallel SystemBoard Memory Keyboard Serial Initialize Exit Memory shows the amount of installed memory and available memory remaining. Memory Keyboard enables you to set the repeat-action (typematic) speed and enables or disables the TrackPoint III. Keyboard Serial enables you to select the port address for a serial device connected to the serial port, or for the internal serial device in the...
Page 60 After verifying the selection, click on OK or press Enter. To cancel the setting, click on Cancel or press Esc. Password is used to set: Power-on password Hard-disk password Supervisor password Password Power-On Hard-Disk Supervisor Cancel For more information about the passwords, see Chapter 5. IBM ThinkPad 755CX User's Guide...
Page 61 Using Easy-Setup Start up is used to change the startup sequence of your computer. Start HDD-3 HDD-4 PCMCIA Note: The HDD-1 icon represents the internal hard disk drive of the For more information about the computer. The other numbered HDD icons are the hard disk drives startup sequence, see “Using the of external devices.
Page 62 Using Easy-Setup Click on Restart to restart the computer after you have made your selections. Then press Enter or click on OK. Restart IBM ThinkPad 755CX User's Guide...
Page 63: Using The Selectable Drive-Startup Sequence
Using Easy-Setup Using the Selectable Drive-Startup Sequence Warning: Selectable drive startup ( selectable boot ) allows you to control the If you change your startup startup sequence of the drives in your computer. The order in sequence, you must be extremely which the computer searches the drives for your operating system is careful when you do write the drive-startup sequence .
Page 64: Using The Fn Key Function
Places the computer in suspend mode. For more information about this mode, See page 53. Reserved — Reserved — LCD/external Displays the computer output in the following order when an external display display switching is attached. IBM ThinkPad 755CX User's Guide...
Page 65 Using the Fn Key Function Key Combination Feature Meaning Reserved — Reserved — Reserved — Power mode When this key combination is pressed during battery-power operation, the switching power-management (power-saving) mode changes as follows. See page 37. The AC mode is used when the AC Adapter is attached. The Fuel-Gauge program displays the current-power option.
Page 66: Using Power Management
Because the operating system is already loaded, the resume function is faster than when turning on power. A comparison of the power conserved and the time required to return to operation mode is shown in the following figure: IBM ThinkPad 755CX User's Guide...
Page 67 Using Power Management Power-saving- Standby Suspend Hibernation modes Time required to return to normal operation. Amount of power consumption. The following figure shows the operations required when the computer moves from a power-off condition to an operational mode, and vice versa. The battery shows the amount of battery power To set the timer: used in each stage.
Page 68: Standby Mode
Fn F3 key combination is Any key is pressed. pressed. Pointing device activity ThinkPad Features program: Page 35. No activity occurs during occurs. the time specified by the Standby timer of the ThinkPad Features program. IBM ThinkPad 755CX User's Guide...
Page 69: Suspend Mode
Using Power Management Suspend Mode In suspend mode, all tasks are stopped and stored in memory to save power. When the computer resumes normal operation, the tasks are automatically restored. The following shows what causes the computer to enter suspend mode and to resume normal operation: To Suspend Mode To Normal Operation...
Page 70: Safe Suspend
Select Power; then select the More... button. If a hibernation file has not been created, click the Enable hibernation button and create the file on the internal hard disk. Click on the Safe suspend box. Select the OK button. IBM ThinkPad 755CX User's Guide...
Page 71: Considerations For Suspend Mode
When the computer is powered with ac power and is using one When the computer enters standby of the following IBM PC Cards, it enters standby mode: mode, you will hear a beep that is – IBM 3270 Emulation Credit Card Adapter different from the one that sounds –...
Page 72 When resuming normal operation, if the PC Card or 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: –...
Page 73: Hibernation Mode
Using Power Management Hibernation Mode Before using hibernation mode, you must create a hibernation file . See page 59 for instructions. Note: During hibernation mode, all tasks are stopped, and memory data Using the Dock I, Dock II or a and the current status of the computer are stored on the hard disk particular PC Card disables drive;...
Page 74 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. IBM ThinkPad 755CX User's Guide...
Page 75: Creating The Hibernation File
Using Power Management Creating the Hibernation File Warning: When installing the operating system, or if you have expanded the The hibernation file must not be computer memory, you must create a hibernation file on the hard created in a compressed data disk drive to use hibernation mode.
Page 76: Considerations For Hibernation Mode
20 and 21. When the computer is powered with ac power and is using one of the following IBM PC Cards, it does not enter hibernation mode: – IBM PCMCIA Data/FAX Modem –...
Page 77: Using Pc Cards
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 representative for more information about the different types of PC Cards.
Page 78: Using The Pc Card Director Program
Using PC Cards Using the PC Card Director Program The PC Card Director is an advanced IBM program that makes it easy to use PC Cards by: Auto Configurator: Turning on and setting up a PC Card when you plug it in (by Page 231.
Page 79: Understanding The Meaning Of Icons
Using PC Cards Understanding the Meaning of Icons The PC Card Director uses various icons to show you the status of the PCMCIA slots and the type of PC Card installed. A Help button is available on most PC Card Director menu screens. To obtain additional information for each screen, click on this button.
Page 80 Hard disk card Communication card Modem card (Depends on I/O card the type of your PC Card.) DOS was booted from the PC Card that is installed. OS/2 was booted from the PC Card that is installed. IBM ThinkPad 755CX User's Guide...
Page 81: Starting Pc Card Director For Os/2
Using PC Cards Starting PC Card Director for OS/2: OS/2 Click on the PC Card Director icon on the OS/2 Desktop. PC Card Director The following screen appears. “No. 1” is for the upper PCMCIA slot, and “No. 2” is for the lower slot. Descriptions of the icons are on page 63.
Page 82 Card Type Card Inform Customize... sets beeps on or off or activates pop-up windows when a PC Card is inserted or removed. Register... registers, updates, or deletes the PCMCIA application program installed for the PC Card. IBM ThinkPad 755CX User's Guide...
Page 83 Using PC Cards Register Object Select a card type Memory Help Object List Drag and drop Workplace objects below. IBM AntiVirus/2 Launch Program Remove Launch... Automatically as card is inserted, Automatically as card is ready. By manual operation. 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.
Page 84 Automatically as Card is Ready. Automatically as Card is Inserted. By Manual Operation. 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. IBM ThinkPad 755CX User's Guide...
Page 85: Starting Pc Card Director For Dos
Using PC Cards Starting PC Card Director for DOS To start PC Card Director, type C:\THINKPAD\EZPLAY at the DOS prompt; then press Enter. The following screen appears. “Socket 1” is for the upper PCMCIA slot, and “Socket 2” is for the lower one. To view more information about an installed PC Card, highlight the item with the Arrow keys ( , );...
Page 86: Starting Pc Card Director For Windows
You also can register a PC Card type, when a card type appears as unknown. Appl. Register... registers, changes, or deletes a PC Card application program. An application can run automatically according to the PC Card type, if you specify the Run Automatic IBM ThinkPad 755CX User's Guide...
Page 87 Using PC Cards option. If you register more than one application for each type of PC Card, select the application you want to run from the list that appears when the PC Card is installed. If you select Options from the menu bar, the following choices appear: Options Help...
Page 88: Using The Infrared Communication Feature
This mode is used when communicating with another 755 series computer with an infrared port or other systems Kbps : Kilobits per second 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 Communicating with the Infrared Port During communication with rear infrared ports, the infrared ports must face directly with each other at a communicating 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...
Page 90: Considerations For Communication
– There is interference from the ambient light. It is recommended not to use infrared communication during bright sunshine or artificial light conditions. – The infrared port is not directly facing the other communicating port. IBM ThinkPad 755CX User's Guide...
Page 91: Using The Mwave Dsp Features
Using the Mwave DSP Audio Features Using the Mwave DSP Features Note: The computer provides an Mwave system, which is based on the In some countries, the Mwave digital signal processor (DSP). It gives you the best performance telephony functions are available when you use it for audio and telephony functions, and it supports a only after the DAA/Telephony Kit more natural way of communicating with your computer.
Page 92 When the DAA /Telephony Option Kit is installed: Microphone/Line-in Jack Headphone Microphone/Line-in Jack Jack Modem/Fax Port Modem/Fax Port Headset Headphone Data Access Jack Note: Arrangement The headset is available as an option in some countries. IBM ThinkPad 755CX User's Guide...
Page 93 Using the Mwave DSP Audio Features To install the Mwave DSP The Mwave DSP supports the following functions for each operating support software: system. Page 192. For OS/2: OS/2 – Wave audio record and playback – MIDI synthesizer – Sound Blaster support in the DOS session –...
Page 94: Using The Audio Function
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. IBM ThinkPad 755CX User's Guide...
Page 95: For Dos
Using the Mwave DSP Audio Features For DOS The Mwave feature supports the audio for DOS games through the Sound Blaster support. To enable Sound Blaster support for DOS games: Type MWGAMES ON at the DOS prompt; then press Enter. Note: To disable the Sound Blaster support for DOS games: If you have exited Windows and...
Page 96: For Windows Or Win-Os/2
This window is similar to the Windows Sound Recorder , which You can use an electric condenser provides wave recording and playback functions; however, this microphone (with battery) for sound window has additional features for controlling the record quality and recording. file size. IBM ThinkPad 755CX User's Guide...
Page 97 Using the Mwave DSP Audio Features Audio Control When you double-click on the Audio Control icon, the following window appears: Audio Control Mwave Audio Control Record Control Output Control Level MIDI Synth Wave Audio Master Source Line CD+Line Audio Options.. Mute Mute Mute...
Page 98 Click on the File on the menu bar; then select Open... from the pull-down menu. Highlight your favorite MIDI file with your pointing device; then click on OK. To begin playing the MIDI file, click on the Play ( button. IBM ThinkPad 755CX User's Guide...
Page 99 Using the Mwave DSP Audio Features Select Synthesizer Note: MIDI When you use wave audio and Aux When you select the icon in the Mwave ThinkPad window, at the same time, select 24 voices you can change the number of voices supported by the MIDI (the default value).
Page 100: Using The Telephony Function
Note: When you use the DAA/Telephony Kit (available as an option), see page 158. IBM ThinkPad 755CX User's Guide...
Page 101: Using The Mwave Modem
Using the Mwave DSP Telephony Features Using the Mwave Modem The Mwave data modem can be used with the Windows terminal emulator to access your favorite bulletin board or online system (PRODIGY , CompuServe , America Online , or other online systems).
Page 102 When you finish using the communication programs, turn off the modem to free the Mwave DSP resources for other functions. To turn off the modem: Type MWMODEM OFF at the DOS prompt; then press Enter. IBM ThinkPad 755CX User's Guide...
Page 103: Mwave Data Modem
Using the Mwave DSP Telephony Features Mwave Data Modem The Mwave telephony features support direct attachment to the public switched telephone network. The Mwave data modem Modem 14400 supports the standard COM port interface and can be used with the communication application programs that use the Hayes command set.
Page 104: Using The Country Selection
Mwave Call Discriminator The Mwave Call Discriminator provides voice and fax discrimination by monitoring incoming calls for fax signal characteristics. This Discriminator feature automatically starts a fax, speaker phone, or answering machine application programs. IBM ThinkPad 755CX User's Guide...
Page 105: Mwave Fax Modem
Using the Mwave DSP Telephony Features Mwave Fax Modem The Mwave telephony features offer you the following fax functions: Call progress monitor Automatic-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...
Page 106: Mwave Telephone Answering Machine
Use a Windows MCI Telephony application program interface Use a high-performance DMA interface Speed up or slow down played messages without affecting their pitch (TDHS) Detect DTMF digits received from the phone line IBM ThinkPad 755CX User's Guide...
Page 107: Chapter 4. Using Battery Power
....Using Power-Saving Options ....Copyright IBM Corp. 1995...
Page 108: Operating Time With The Battery Pack
You are setting up your computer. Battery Adapter. A new battery pack was purchased. The battery status indicator (orange) stays on. The battery status indicator (orange) blinks for less than 1 minute; then the suspend mode indicator turns on. IBM ThinkPad 755CX User's Guide...
Page 109: Charging With The Ac Adapter
Battery-Powered Operation Charging with the AC Adapter The following procedure describes how to recharge the battery pack with the AC Adapter when the computer is turned off. Note: Turn off the computer and open the keyboard. Make sure the locking lever for the hard disk drive is unlocked.
Page 110: Charging With The Travel Quick Charger
Charging with the Travel Quick Charger You can charge the battery pack with the Travel Quick Charger (available as an option). For the charging procedure, refer to the instructions supplied with the Travel Quick Charger. IBM ThinkPad 755CX User's Guide...
Page 111: Replacing The Battery Pack
Replacing the Battery Pack Replacing the Battery Pack Warning: A spare battery pack is available as an option. Replace the current If you are using PC Cards, either battery pack when its power becomes low. connect the AC Adapter, or stop the PC Card application and The battery pack can be replaced with computer power on or off.
Page 112: Monitoring The Battery-Power Status
Connect the AC Adapter to the (low-battery). computer; leave the battery pack See “Low-Battery installed, or Condition” on Replace the battery pack with a page 97. fully charged spare (see “Replacing the Battery Pack” on page 95). IBM ThinkPad 755CX User's Guide...
Page 113: Low-Battery Condition
Using the Battery-Power Status Indicator Status Condition Action Required The battery You should take the necessary actions when the blinking orange pack is not installed. condition occurs, before the computer enters suspend mode because of a low-battery condition. computer is turned off.
Page 114: Using The Fuel-Gauge Program
Power mode Battery status To install the ThinkPad Suspend or hibernation options Features program: Page 180. Discharge option Refer to the Fuel-Gauge program instructions that are appropriate for your operating system. IBM ThinkPad 755CX User's Guide...
Page 115: Fuel-Gauge Program For Os/2 And Windows
Using the Fuel-Gauge Program Fuel-Gauge Program for OS/2 and Windows OS/2 When you press the Fn F2 key combination with OS/2 or Windows, the Fuel-Gauge program appears, as shown in the following illustrations: Notes: When the AC Adapter is connected: 1.
Page 116: Discharging The Battery Pack For Os/2 And Windows
Close the LCD; then open it and leave the computer at the power-on password prompt while you are away. When the battery pack is completely discharged, charging starts automatically. To cancel discharging , click on the Charge button ( IBM ThinkPad 755CX User's Guide...
Page 117: Fuel-Gauge Program For Dos
Using the Fuel-Gauge Program Fuel-Gauge Program for DOS When you press the Fn F2 key combination with DOS, the Fuel-Gauge program appears at the top-right corner of the screen as shown in the following. When the AC Adapter is connected: When the AC Adapter is connected to the computer, the following messages alternately appear: Power source...
Page 118: Discharging The Battery Pack For Dos
When you see this message, enter the following command to discharge the battery pack: The battery pack starts to discharge. When the discharge is complete, recharging starts automatically. To cancel discharging , enter PS2 DISCHARGE D. IBM ThinkPad 755CX User's Guide...
Page 119: Preserving Battery-Pack Life
Preserving Battery-Pack Life Preserving Battery-Pack Life To preserve the life of the battery pack: Do not charge it until all of its power is used. Once you have started charging the battery pack, do not use it until it is fully charged. Turn off the computer whenever it is not in use.
Page 120: Maximizing Battery-Powered Operation
Enter. If a screen similar to the following appears, APM is successfully installed. If such a screen does not appear, add the following line to your CONFIG.SYS file, using a text editor: IBM ThinkPad 755CX User's Guide...
Page 121: Decreasing Lcd Brightness
Maximizing the Battery-Powered Operation When you use Windows, do the following to check and install APM for Windows: 1. Start the system. Make sure that the current directory has Windows (usually C:\WINDOWS>). 2. Type SETUP at the command prompt and press Enter. The following screen appears.
Page 122: Using Power-Saving Modes
One of the easiest ways to enter the modes is to use Standby mode: the Fn key function: Page 52. To enter standby mode: Suspend mode: Page 53. press and hold Fn; then press F3. To enter suspend mode: press and hold Fn; then press F4. IBM ThinkPad 755CX User's Guide...
Page 123: Using Power-Saving Options
Maximizing the Battery-Powered Operation Using Power-Saving Options Note: The power-saving options specified in each power mode save If you have installed an operating battery power and make it possible to use the battery pack longer system, make sure you also install before another recharge is needed.
Page 124 No Power-Saving Mode Amount of Required Power LCD Off Processor Brightness at Minimum Maximum Medium Slow External Serial Off Minimum Internal Serial Off Power-Saving Mode Suspend Mode Mwave DSP Off Hard Disk Off Standby Mode Infrared Off IBM ThinkPad 755CX User's Guide...
Page 125: Chapter 5. Protecting Your Computer
..... Removing the PC Card Lock ....Copyright IBM Corp. 1995...
Page 126: Using Passwords
If the return to normal operation is caused by the timer or an Easy-Setup functions. incoming call through the modem, the password prompt does not appear. Type the correct password on the blank screen. IBM ThinkPad 755CX User's Guide...
Page 127: Setting A Power-On Password
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 service.
Page 128: Changing A Power-On Password
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 to have the password canceled. Proof of purchase is required, and an additional charge might be required for the service.
Page 129: Removing A Power-On Password
Using the Passwords Removing a Power-On Password You must remove your power-on password at the password prompt. You cannot remove it after normal operation is resumed. To remove a power-on password, do the following: Turn off the computer and wait at least 5 seconds; then turn it on.
Page 130: Hard-Disk Password
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. IBM ThinkPad 755CX User's Guide...
Page 131: Setting A 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 disk drive usable.
Page 132: Changing A 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 in the hard disk drive. Neither IBM authorized reseller nor IBM marketing representative can make the hard disk drive usable.
Page 133: Removing A Hard-Disk Password
Using the Passwords Removing a Hard-Disk Password The procedure to remove a hard-disk password depends on whether or not it is set the same as the power-on password. When the hard-disk password is set the same as the power-on password , remove the hard-disk password by following the steps in “Removing a Power-On Password”...
Page 134: Supervisor Password
Default in the Config menu, Password, and Start up functions cannot be used. To use these functions, you must enter the correct supervisor password at the password prompt. IBM ThinkPad 755CX User's Guide...
Page 135: Setting A Supervisor Password
There is no way to reset the password or recover data from the hard disk. Neither IBM authorized reseller nor IBM marketing representative can make the hard disk drive usable. If you are using more than one hard disk drive, see page 123.
Page 136: Changing A Supervisor Password
There is no way to reset the password or recover data from the hard disk. Neither IBM authorized reseller nor IBM marketing representative can make the hard disk drive usable. If you are using more than one hard disk drive, see page 124.
Page 137: Removing A Supervisor Password
Using the Passwords Removing a Supervisor Password Do the following to remove the supervisor password: Turn off the computer and wait at least 5 seconds; then turn it on. To start Easy-Setup: Start Easy-Setup. When the power-on prompt ( Page 42. appears, type your current supervisor password;...
Page 138: Using The Hard-Disk And Power-On Passwords
IBM ThinkPad 755CX User's Guide...
Page 139: Password
Using the Passwords Using Several Hard Disk Drives with the Supervisor Password Because the supervisor password automatically sets a hard-disk password, you must set a supervisor password for each hard disk drive you are using. To change or remove a supervisor password when you are using several hard disk drives, you must change or remove the hard-disk password for each hard disk drive.
Page 140: Changing Or Removing The Supervisor Password When Using Several Hard Disk Drives
(space) new (space) new Press Enter. Turn off the computer. Repeat steps 2 through 5 to change or remove the supervisor password for each hard disk drive. IBM ThinkPad 755CX User's Guide...
Page 141: Using The Personalization Utility Program
Personalization editor to create your own image to be displayed with the text information you create, and 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:...
Page 142 Paste the text by selecting Edit and then Paste, then save it as a bitmap file to the backup copy of the Utility Diskette. h) Close Write and Paintbrush. IBM ThinkPad 755CX User's Guide...
Page 143 Using the Personalization Utility Program Create the background of your password-prompt screen as follows: a) Select the Paintbrush icon. b) Select Options; then Image Attributes... from the pull-down menu. c) Specify a Width of 160 and Height of 100; then select pels under “Units”...
Page 144 To preview of your screen, select Preview from the Press the Spacebar to return to the pull-down menu. Personalization editor window. To change the screen, repeat the preceding steps. h) Exit the Personalization Utility window. IBM ThinkPad 755CX User's Guide...
Page 145 Using the Personalization Utility Program Close all applications; then turn off the computer. Insert the backup copy of the Utility Diskette into the diskette drive; then turn on the computer. Select Update personalization data; then follow the instructions on the screen. Your data will be stored in the nonvolatile memory in the system.
Page 146: Using Locks
To use this lock, slide the locking lever as shown; then attach a chain or cable to the opening and a stationary object. This also prevents the keyboard from opening and secures the internal devices under the keyboard. IBM ThinkPad 755CX User's Guide...
Page 147: Using The Security Lock
Protecting Your Computer and Internal Devices Using the Security Lock To prevent your computer from being removed 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.
Page 148: Using The Pc Card Lock
Removing the PC Card Lock To remove the PC Card lock, open the keyboard and insert the tip of a pen into the opening from the inner side of the computer; then push the lock up. IBM ThinkPad 755CX User's Guide...
Page 149: Chapter 6. Installing And Removing Options
Using the Mouse and Other Pointing Devices ..Using a Mouse on the IBM ThinkPad Space Saver Keyboard 161 Using the ThinkPad Features Program ...
Page 150: Installing And Removing Pc Cards
Do not insert IC DRAM cards into the PCMCIA slots. Inserting the PC Card Insert the tip of a ballpoint pen into the end-cut of the blank cover ; then remove the cover from the PCMCIA slot. IBM ThinkPad 755CX User's Guide...
Page 151 Installing and Removing PC Cards Insert the PC Card into an appropriate slot according to your PC Card type: If you are using a Type I or Type II PC Card, insert it into either the upper slot or the lower slot as shown.
Page 152: Removing The Pc Card
Card you want to remove; then remove the PC Card. removed. To remove PC Card lock: Page 132. If you are not going to use the PCMCIA slot, remove the cover with the cable opening; then install a blank cover. IBM ThinkPad 755CX User's Guide...
Page 153: Increasing Memory Capacity
Increasing Memory Capacity Increasing Memory Capacity Increasing memory capacity is an effective way to make programs run faster. You can increase the amount of memory in your computer by installing either an IC DRAM card or Memory Modules (DIMMs) . Because the computer has only one slot for a memory card, you cannot use both an IC DRAM card and DIMMs at the same time.
Page 154: Installing An Ic Dram Card And Dimm
Remove the diskette drive. Which type of memory are you installing? IC DRAM card Go to the next step. DIMM Go to step 9 on page 140. IBM ThinkPad 755CX User's Guide...
Page 155 Increasing Memory Capacity Place the adhesive strap on the card as shown. This strap is used to remove the card. Warning: Insert the IC DRAM card as shown. Press the card Do not insert any PC Card into firmly into the connector. the connector for the IC DRAM card.
Page 156 Insert the DIMM adapter into the connector by pressing on both edges as shown. IBM ThinkPad 755CX User's Guide...
Page 157 Increasing Memory Capacity Warning: Insert the DIMM into either of the sockets on the DIMM To avoid damaging the DIMM, do adapter. not touch its contact edge. a) Find the notch on the side of the DIMM. b) With the notched end of the DIMM toward the right side of the socket , insert the DIMM, at an angle of approximately 35 degrees, into the socket;...
Page 158 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. IBM ThinkPad 755CX User's Guide...
Page 159: Removing The Ic Dram Card And Dimm
Increasing Memory Capacity Removing the IC DRAM Card and DIMM Turn off the computer; then disconnect the AC Adapter and all cables from the computer. Warning: Open the LCD; then open the keyboard. Make sure the locking lever for the hard disk drive is unlocked. Warning: Make sure there is no diskette in the diskette drive;...
Page 160 Increasing Memory Capacity Remove the IC DRAM card by pulling the adhesive strap Go to step 12 on page 147. IBM ThinkPad 755CX User's Guide...
Page 161 Increasing Memory Capacity Warning: Press the locks on both edges of the socket at the same To avoid damaging the DIMM, do time and remove the DIMM. not touch its contact edge. While holding the strap , pull the DIMM adapter toward the front and remove it.
Page 162 The base plate should have been and install it as shown. removed and stored when you installed the DIMM adapter. Push the base plate forward to click it into place. IBM ThinkPad 755CX User's Guide...
Page 163 Increasing Memory Capacity Warning: Reinstall the diskette drive. Press on the shaded area The diskette drive is a very as shown until the drive snaps into the connector. delicate device. Do not press on the middle of the diskette drive. Otherwise, the drive head could get damaged.
Page 164: Replacing The Hard Disk Drive
The capacity of the hard disk can be increased by replacing the original hard disk drive with an optional one. This option can be purchased through your IBM authorized reseller or IBM marketing representative. Turn off the computer; then disconnect the AC Adapter and all cables from the computer.
Page 165 Replacing the Hard Disk Drive Insert the replacement drive. Press on the shaded area as shown until the drive snaps into the connector; then close the keyboard. 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”...
Page 166: Installing Options In The Diskette Drive Compartment
Do not press on, drop, the diskette drive. or apply any shock to the diskette drive while it is removed from the computer. Insert a coin between the option cover and computer. IBM ThinkPad 755CX User's Guide...
Page 167 Installing Options in the Diskette Drive Compartment Push the option cover from the bottom of the computer and remove it. Insert a coin between the diskette drive bezel and computer. Chapter 6. Installing and Removing Options...
Page 168 Start the ThinkPad Features program. Select Power; then select Diskette Drive Compartment in the Power for devices menu. If you are using DOS, use the PS2 command at the command prompt. PS2 command: Page 41. IBM ThinkPad 755CX User's Guide...
Page 169: Reinstalling The Option Cover And Front Bezel
Installing Options in the Diskette Drive Compartment Reinstalling the Option Cover and Front Bezel To reinstall the option cover (on the side of the computer), do the following: 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.
Page 170 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. IBM ThinkPad 755CX User's Guide...
Page 171: Installing The Daa/Telephony Kit
Installing the DAA/Telephony Kit Installing the DAA/Telephony Kit Note: If the telephone plug on the left side of your computer is one with a In some countries, the Mwave square receptacle, the computer can be used for telephony or telephony functions are available modem/fax functions without any changes.
Page 172 Installing the DAA/Telephony Kit Slide the latch to the left-most position and release the dummy plug. Remove the dummy plug from the computer. IBM ThinkPad 755CX User's Guide...
Page 173 Installing the DAA/Telephony Kit Make sure the latch is at the left-most position; then install the new plug with the round receptacle and firmly press it into the connector. Warning: Slide the lever to its right-most position until it clicks into Do not leave the lever in its place;...
Page 174 After you have completed attaching the modem/fax port, install the necessary software by referring to the manual that came with the option package. Refer to “Using the Telephony Function” on page 84 for information about how to use the Mwave telephony features. IBM ThinkPad 755CX User's Guide...
Page 175: Attaching An External Numeric Keypad Or A Mouse
You can use both than IBM PS/2 Miniature Mouse, the IBM PS/2 Mouse and TrackPoint III as a pointing device. The turn off the computer. 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.
Page 176: Using The Mouse And Other Pointing Devices
With DOS, use the PS2 command. Enter PS2 ? at the command prompt; then select appropriate PS2 command. PS2 command: Page 41. Note: You also can use Easy-Setup to disable the TrackPoint III. To start Easy-Setup: Page 42. IBM ThinkPad 755CX User's Guide...
Page 177: Using A Mouse On The Ibm Thinkpad Space Saver Keyboard
Attaching an External Numeric Keypad or a Mouse Using a Mouse on the IBM ThinkPad Space Saver Keyboard You can use the IBM ThinkPad Space Saver Keyboard instead of the keyboard of your computer. When you connect a mouse to the Space Saver Keyboard, you must disable the TrackPoint III of your computer.
Page 178: Using The Device Driver On The Utility Diskette
Press Enter and follow the instructions on the screen until the Installation Options menu appears. Select the following according to your operating system: If you are using OS/2, select Install IBM ThinkPad Space Saver Keyboard Driver for OS/2. If you are using DOS or Microsoft Windows, select Install IBM ThinkPad Space Saver Keyboard Driver for DOS.
Page 179: Attaching An External Keyboard
Attaching an External Keyboard Attaching an External Keyboard You can connect an external keyboard to your computer through the keyboard/mouse connector (separately available as an option). Note: The external keyboard must be connected through the The computer enters suspend mode keyboard/mouse connector.
Page 180: Attaching A Printer
Most parallel printers with the standard Centronics interface can be attached to the 25-pin parallel connector ( ) at the rear of the computer. Turn off the computer and attach the printer as shown. Turn on the computer and the printer. IBM ThinkPad 755CX User's Guide...
Page 181: Attaching An External Display
Attaching and Replacing an External Display Attaching an External Display Note: The computer can display information on the LCD as follows: When installing an operating 755CX SVGA model supports SVGA (800-by-600 resolution) system, you must install the display video mode and VGA (640-by-480) with 65 536 colors. driver before you can use the external display.
Page 182: Changing The Display Mode
– Both to display information on both the LCD and external display. – CRT to display information on the external display. – LCD to display information on the LCD. 3. Click on the OK button. IBM ThinkPad 755CX User's Guide...
Page 183: Setting The Monitor Type And The Display Driver
Attaching and Replacing an External Display Setting the Monitor Type and the Display Driver Before attaching the external display to your computer, set the appropriate monitor type and device driver type as follows: Start the ThinkPad Features program. OS/2 Select the Display icon. First, change Monitor settings by using the ThinkPad Features program: Select Monitor.
Page 184 Other parts can be seen by moving the screen with the TrackPoint III or other pointing device. To do this, see page 38. IBM ThinkPad 755CX User's Guide...
Page 185: Connecting The External Display To The Computer
Attaching and Replacing an External Display Connecting the External Display to the Computer Warning: To attach an external display to the computer, do the following: Do not disconnect the external display while the computer is in Turn off the computer. suspend mode or hibernation mode.
Page 186: Changing The Screen Resolution Or Color Depth
For OS/2 V.2.11 or Windows: Start the ThinkPad Features program. Select the Display icon. Select Device Driver Click on the new resolution and color depth; then click on OK. Restart OS/2 or Windows to make the changes effective. IBM ThinkPad 755CX User's Guide...
Page 187: Using Svga Display Drivers
Attaching and Replacing an External Display Using SVGA Display Drivers The computer can display information on the attached SVGA display according to your operating system: For OS/2 V.2.11: Color Resolution 640 by 480 256 colors 800 by 600 1024 by 768 For Windows: Color Resolution...
Page 188: Attaching The Ibm Dock I Or 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 hold Fn and then press PgUp ( ), the sound volume increases.
Page 189 ....IBM OS/2 Warp or Version 2.11 ....
Page 190: What You Need For Your Computer
The operating systems supported by the computer are: IBM DOS Version 7.0 or later IBM DOS Version J6.3/V or later IBM Operating System/2 (OS/2) Warp Version 3.0 IBM Operating System/2 (OS/2) Version 2.11 Microsoft Windows Version 3.11 or later Microsoft Windows for Workgroup Version 3.11 or later...
Page 191 Software Considerations The following figure shows what must be installed for each operating system before you begin computer operation: Page Numbers: PC DOS OS/2 Warp Microsoft Windows Version 7.0 or Version 2.11 Version 3.1 For OS/2: Install OS/2 Install DOS Install DOS (Warp or Version 2.11) Page 176.
Page 192: Installing The Operating System
Installing the Operating System Refer to the appropriate section in the following to install your operating system. IBM OS/2 Warp or Version 2.11 OS/2 Follow the instructions in the operating-system documentation. After OS/2 Warp has been successfully installed, go to “Installing the ThinkPad Features Program”...
Page 193: Microsoft Windows Version 3.11 Or Later
Installing the Operating System Microsoft Windows Version 3.11 or Later Windows operates in a DOS environment. Install DOS Version 7.0 or later (see the DOS documentation); then install the ThinkPad Features program for DOS (see page 181) before you install Windows.
Page 194 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. e) Press Enter to continue the installation. IBM ThinkPad 755CX User's Guide...
Page 195 Installing the Operating System When you have completed the installation of Windows Version 3.11, edit the AUTOEXEC.BAT file so that the computer will use the correct mouse driver. When Windows Version 3.11 is installed, the computer might be automatically configured to use the mouse driver (MOUSE.COM) provided by Windows Version 3.11.
Page 196: Installing The Thinkpad Features Program
To use the PS2 command in the DOS session of OS/2, install the program at the DOS full screen using the same procedure that you used to install for DOS. (See page 181.) Go to “Installing the PCMCIA Device Driver” on page 183. IBM ThinkPad 755CX User's Guide...
Page 197: Installing For Dos
Installing the ThinkPad Features Program Installing for DOS To install the ThinkPad Features program for DOS, do the following: Turn on the computer and start the operating system. Insert the Utility Diskette into the diskette drive; then type A:UINSTALL at the DOS prompt and press Enter. The following screen appears.
Page 198: Installing For Windows
PS2 command: Page 41. To use the PS2 command in the DOS session of Windows, install the program at the DOS full screen. (See page 181.) Go to “Installing the PCMCIA Device Driver” on page 183. IBM ThinkPad 755CX User's Guide...
Page 199: Installing The Pcmcia Device Driver
When installing an operating system, you must install the following Do not install the Phoenix** device drivers and software associated with PCMCIA before you PCMCIA support for IBM DOS 7.0. can use the PC Cards: PC Card Director for Windows runs...
Page 200 Installing the PCMCIA Device Driver For IBM DOS Version 7.0 or later: Only for DOS. Software File Name How to Install Only for Windows. Card Services IBMDOSCS.SYS Installed with the PCMCIA device Socket Services IBMDSS01.SYS driver. (See Resource Map Utility DICRMU01.SYS...
Page 201: Installing For Os/2
Installing the PCMCIA Device Driver Installing for OS/2 OS/2 To install the PCMCIA device driver for OS/2, do the following: Turn on the computer and start the operating system. Insert the PCMCIA Features Diskette into the diskette drive. Open the OS/2 full screen command prompt; then type A:PCMINST2 and press Enter.
Page 202: Installing For Dos
You do not need to restart the computer when proceeding to page 238. the installation of the ThinkPad display driver. You have completed the installation of the PCMCIA device driver for DOS. Go to “Installing the ThinkPad Display Driver” on page 188. IBM ThinkPad 755CX User's Guide...
Page 203: Installing For Windows
Installing the PCMCIA Device Driver Installing for Windows To install the PCMCIA device driver for Windows, do the following: Turn on the computer and start the operating system. Select File from the Program Manager window; then select Run... from the pull-down menu. Program Options Windows Help...
Page 204: Installing The Thinkpad Display Driver
For DOS, display drivers have already been prepared in the You can change the refresh rate of computer as a basic function. You do not need to install them. the external display with the PS2 command. PS2 command: Page 41. IBM ThinkPad 755CX User's Guide...
Page 205: Installing For Os/2 Warp
Installing the ThinkPad Display Driver Installing for OS/2 Warp OS/2 Refer to the documentation that came with the display driver diskette for OS/2 Warp. Select the WD90C24 display driver when installing the display driver. Installing for OS/2 V.2.11 OS/2 You must do the following before you install the Display Driver: Before You Begin To install the ThinkPad Features program:...
Page 206 When you are asked to overwrite the target file, select Yes. After the installation has been successfully completed, remove the diskette; then shut down OS/2 and restart the computer. You have completed the installation of the display driver for OS/2. IBM ThinkPad 755CX User's Guide...
Page 207: Installing For Windows
Installing the ThinkPad Display Driver Installing for Windows If you did not install the display driver when Windows was installed (by following the procedures on page 177), install the display driver for Windows: Exit Windows and go to the DOS prompt if Windows is running.
Page 208: Installing The Mwave Support Software
Insert the Mwave DSP Features Diskette 1 for OS/2 into 2. Select Command Prompts; the diskette drive. then select OS/2 Full Screen. Type A:SETUP; then press Enter The installation window appears on the screen. Follow the instructions on the screen. IBM ThinkPad 755CX User's Guide...
Page 209 Installing the Mwave Support Software Note: Restart OS/2 to make the Mwave features effective. To shut down OS/2: 1. Move the mouse pointer to a Install Mwave MMPM audio support software as follows: blank part of your OS/2 Desktop. a) Insert the Mwave DSP Features Diskette for OS/2 Audio into the diskette drive.
Page 210: Installing For Dos
Follow the instructions on the screen. After the installation is complete, remove any diskette from the diskette drive; then restart DOS to activate the Mwave support software. You have completed the installation of the Mwave support software for DOS. IBM ThinkPad 755CX User's Guide...
Page 211: Installing For Windows
Installing the Mwave Support Software Installing for Windows Warning: To install the Mwave support software for Windows, do the Before you install the Mwave following: support software, close all open applications. Turn on the computer; then start Windows. Select File from the Program Manager window; then select Run...
Page 212: Installing The Infrared Device Driver
Source Drive ... [ Enter F1=Help F3=Exit 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 188. IBM ThinkPad 755CX User's Guide...
Page 213: Installing For Windows
Installing the Infrared Device Driver Installing for Windows Turn on the computer; then go to the DOS command prompt. Insert the Infrared Features Diskette into the diskette drive. Type A:UINSTALL; then press Enter. The following screen appears: Installation Options Installation Source Drive Type the SOURCE drive leter (A-Z).
Page 214 Installing the Infrared Device Driver IBM ThinkPad 755CX User's Guide...
Page 215 Important Use this chapter to test only IBM products. Non IBM products can cause misleading error information or incorrect computer responses. When testing non IBM products, refer to the instructions supplied with those products.
Page 216: Commonly Asked Problems And Actions
Do one of the following: If the computer is attached to the Dock I, suspend mode is disabled. If the AC Adapter is used and the computer is communicating, suspend and hibernation modes are disabled. IBM ThinkPad 755CX User's Guide...
Page 217 What If Your Computer Does Not Work? The PC Card modem does not work. Do the following: 1. Start the PC Card Director and check the serial port name (COM1–COM4) assigned to the modem card. 2. Open your PC Card application; then assign the serial port name for the modem.
Page 218: Testing The Computer
Did the Easy-Setup menu appear on the screen? The computer has successfully completed the POST (internal tests), and the system programs have been loaded. To start the test programs, select the Test icon; then select the Start icon or press Enter. IBM ThinkPad 755CX User's Guide...
Page 219 What If Your Computer Does Not Work? Start Restart SystemBoard Memory Display HDD-1 FDD-1 PCMCIA-1 Parallel Serial CD-ROM PCMCIA-2 HDD-2 FDD-2 If the computer did not beep, the speaker is not working correctly. Have the computer serviced. If you are not sure about the beep, turn off the computer;...
Page 220: Troubleshooting Charts
If these are correct, test the computer. If the test ends without an error, have the computer serviced. Incorrect characters Verify that operating systems and application programs have been installed and appear on the screen. configured correctly. If so, have the computer serviced. IBM ThinkPad 755CX User's Guide...
Page 221 What If Your Computer Does Not Work? Problem Action The screen image This is to maintain compatibility with the DOS application; it is not a problem. appears smaller than the LCD size (using a DOS application on a 755CX SVGA model only). When you use DOS Shell Verify that: or some kind of...
Page 222: Screen Messages
If the computer stops during testing and does not continue, have the computer serviced. If testing does not find a problem but one still exists, find the problem in “What If Testing Cannot Find the Problem?” on page 211. IBM ThinkPad 755CX User's Guide...
Page 223 What If Your Computer Does Not Work? Message Action POST error prompt. An error was found during the POST. Press Enter; then select Start from the test menu to run the test. If the test ends with an error, make a note of the error code and have the computer serviced.
Page 224: Error Codes
16 x or 17 x Follow the instructions on the screen. There is a device configuration error. Check that the hard disk drive and the diskette drive are installed firmly in the connectors. IBM ThinkPad 755CX User's Guide...
Page 225 What If Your Computer Does Not Work? Screen Message Action The entered password is invalid. Turn off the computer and wait at least 5 seconds; then turn it on again and type the correct password. The computer has turned off because of a critically low-battery condition. Action: Connect the AC Adapter to the computer and charge the battery pack.
Page 226: General Problems
Check that the startup sequence is set to start the computer from the diskette start from a diskette. drive (see page 47). Keyboard cannot be Check that the locking lever for the hard disk drive is unlocked or that the opened. Kensington lock is not used. IBM ThinkPad 755CX User's Guide...
Page 227: What If Testing Cannot Find The Problem
What If Your Computer Does Not Work? What If Testing Cannot Find the Problem? If the test programs do not find the problem, use the following troubleshooting charts: Battery Power Problems Problem Action The battery pack starts When the AC Adapter is connected, and the remaining power of the installed discharging automatically, battery pack is less than a certain amount, discharging and then charging of the even if the AC Adapter is...
Page 228 (O) from the on position ( | ). 2. Do not slide the switch to the off position (O) for daily operations of your computer. Otherwise, incorrect battery-power status will be reported. If there is still a problem, have the computer serviced. IBM ThinkPad 755CX User's Guide...
Page 229: Diskette Drive Problems
What If Your Computer Does Not Work? Diskette Drive Problems Problem Action The diskette drive in use If there is a diskette in the drive, verify that: indicator stays on. – There is nothing wrong with the diskette. Try a backup copy if you have one.
Page 230: Infrared Communication Problems
The communicating device is using an equivalent communication speed. There is no device radiating infrared rays, such as remote-controlled devices or wireless headphones, near the computer or device. Direct sunlight or fluorescent lamps are not near the computer or device. IBM ThinkPad 755CX User's Guide...
Page 231: Software Problems
If the preceding items are correct and there is still a problem, contact your IBM authorized reseller or IBM marketing representative for help.
Page 232: Keyboard, External Numeric Keypad, And Pointing Device Problems
When the TrackPoint III is pressed for a long period of time. During computer When the environmental temperature changes. operation, the pointer Do not touch the TrackPoint III until the pointer stops moving. drifts when not using the TrackPoint III. IBM ThinkPad 755CX User's Guide...
Page 233 If you are using Windows, make sure Computer is set as MS-DOS System with APM. See page 177. If you are using mouse that is not compatible with the IBM PS/2 Mouse, disable the TrackPoint III using the ThinkPad Features program.
Page 234: External Display Problems
If so, have the computer serviced. When you use a DOS This occurs to maintain the compatibility of DOS application. This is not a application, the screen problem. image appears smaller than the external display size (755CX SVGA model only). IBM ThinkPad 755CX User's Guide...
Page 235 What If Your Computer Does Not Work? Problem Action When you use DOS Shell Verify that: or some kind of If you are using DOS Shell and set the screen mode 800-by-600 resolution application in the DOS by PS2 MODE3X command, do the following: environment, the lines on 1.
Page 236: Printer Problems
If the preceding items are correct and there is still a problem, make a note of the problem and what the computer was doing when the problem occurred. Then contact your IBM authorized reseller or IBM marketing representative for help.
Page 237: Listing Installed Options
Getting Service Listing Installed Options When getting service, you might need to know which options you have in your system. Check or write the names of your options below. IC DRAM Card Option in the (2MB, 4MB, 8MB, or 16MB) Diskette Drive Compartment DIMM DIMM Adapter...
Page 238: Recording Identification Numbers
ThinkPad 755CX VGA model Machine Type Serial Number The machine type and serial number 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. IBM ThinkPad 755CX User's Guide...
Page 239: Getting Service
Getting Service Getting Service If you need further assistance, call your IBM authorized reseller or IBM marketing representative. When requesting service, describe the error message or problem to the service representative. Error messages can help identify what service action is required and help the service representative provide quick and efficient service.
Page 240: The Ibm Helpclub: Another Great Choice (For European Countries)
English, not technical gobbledegook. HelpClub Privileges: lots of specials for members HelpClub is an exclusive club for IBM users. You can become a member for a free trial period to receive special offerings. Helpware is also a source of special deals for IBM customers, comprising an exclusive collection of offers and discounts.
Page 241: Join The Helpclub
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...
Page 242 Getting Service IBM ThinkPad 755CX User's Guide...
Page 243 When you are using DOS, do the following: Use the PS2 command to change the values for devices. Type PS2 ? at the command prompt; then press Enter. PS2 command: Page 41. Copyright IBM Corp. 1995...
Page 244 None None 03E0–03E3 None PC Card (Depends on the C0000–DFFFF None None type of PC Card) Real-time clock None 0070–0071 None TrackPoint III or None 0060, 0064 None mouse Math coprocessor None None None exception IBM ThinkPad 755CX User's Guide...
Page 245 Avoiding Hardware Conflicts Memory System Resources Address (Hex) I/O Address (Hex) Channel Options in Dock I or 2, 3, 4, 5, 7, 9, CA000–CBFFF (Depends on the installed 0, 1, 2, Dock II 10, 11, 15 C8000–C9FFF option device) 3, 5, 6, 7 SCSI controller CE000–CFFFF DE000–DFFFF...
Page 246 Avoiding Hardware Conflicts IBM ThinkPad 755CX User's Guide...
Page 247 For OS/2: For DOS or Windows: The basic structure of the data file for Auto Configurator, AUTODRV2.INI for OS/2 or AUTODRV.INI for DOS or Windows, is as follows: [Card name] =card name Keyword1=data1,Keyword2=data2,... Keyword1=data1,Keyword2=data2,... Keyword1=data1,Keyword2=data2,... Keyword1=data1,Keyword2=data2,... Copyright IBM Corp. 1995...
Page 248 Example When the Auto Configurator Is Not Used When you do not need to use the Auto Configurator, add the following line after the “CardID” parameter: The Auto Configurator does not assign resources to the PC Card when this line is added. IBM ThinkPad 755CX User's Guide...
Page 249 Advanced Information for PC Cards Example of the Memory Area for the Card Services and 3270 Notes: The following is an example of the memory area specified by the Card Services memory area and 3270 data file: 1. The Auto Configurator for OS/2 supports modem and data/fax A Resource Map Utility statement: modem PC Cards.
Page 250 Rule 2 The PC Card Client device drivers must be listed after the Socket Services (IBM2SS01.SYS) and before the Power Management Utility ($ICPMOS2.SYS). Rule 3 The Power Management Utility ($ICPMOS2.SYS) should be listed at the end of the CONFIG.SYS file. IBM ThinkPad 755CX User's Guide...
Page 251 Advanced Information for PC Cards Software Considerations for DOS Keep in mind the following considerations when using PC Cards: Using a Software EMS with the PC Card Warning: To use a software EMS without the Dock I or Dock II: When you update the EMM386 During the installation of the PCMCIA device driver, your system parameter in the CONFIG.SYS file...
Page 252 Examples of Hardware Configurations The following examples show memory allocations and notices for using various PC Cards: Using PC Cards and SCSI adapter installed in the Dock I: – Modify your CONFIG.SYS file as follows: IBM ThinkPad 755CX User's Guide...
Page 253 Dock I User's Guide . I SCSI adapter is at the default allocation (X CA000 —X CBFFF ). Using several PC Cards – Modify the configuration file as in the following example (IBM token ring card IBM Ethernet card IBM 3270 card modem EMM386): Appendix B.
Page 254 The following is a sample of the CONFIG.SYS file for DOS: You might need 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: IBM ThinkPad 755CX User's Guide...
Page 255 Advanced Information for PC Cards Rule 1 For you to use the software EMS driver (EMM386.EXE) with the PCMCIA drivers, the “X=” parameter must be specified for EMM386.EXE. This parameter specifies the memory range that is used by the PCMCIA drivers. (For more information see “Using a Software EMS with the PC Card”...
Page 256 (usually C:>). This converts the PCMCIA DEVICE statements to comments. The CONFIG.SYS file will look like this: If you want to reset the PCMCIA memory area so you can use a PC Card, enter PCMCIAON at the command prompt. IBM ThinkPad 755CX User's Guide...
Page 257 Advanced Information for PC Cards Note: Using the DOS Multiple Configuration Function: Use the DOS See the sections in the DOS User's Multiple Configuration Function to change the CONFIG.SYS file, and Guide about using the DOS add the choice of loading the PCMCIA device driver. operating system and configuring your system using multiple The CONFIG.SYS file should look like this:...
Page 258 ( 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: The parameters for “/MA” and “EMMEXCLUDE” must be the same. 5. Close the SYSTEM.INI file. IBM ThinkPad 755CX User's Guide...
Page 259 11 KHz 16 bits 20 Hz — 5 80 dB AM quality 9.6 KHz 14 bits 200 Hz — 4 60 dB Toll quality 8.0 KHz 8 bits 200 Hz — 4 60 dB Toll quality Copyright IBM Corp. 1995...
Page 260 The MIDI Mapper controls which of the 16 MIDI channels to send to the Mwave feature for playback. The MPC audio specification describes two types of synthesizers. A BASE Multitimbral synthesizer transmits data on MIDI channels 13–16 and supports 8 IBM ThinkPad 755CX User's Guide...
Page 261 Advanced Information for Audio Function simultaneous voices (8 notes at once, each of which can come from a different instrument). An EXTENDED Multitimbral synthesizer transmits data on MIDI channels 1–10 and supports 32 simultaneous voices. The Mwave feature supplies the following MIDI Mappers for selecting which MIDI format to use for Mwave: Mwave EXT GM For Mwave MIDI synthesizer channels 1–10 Mwave Base GM For Mwave MIDI synthesizer channels 13–16...
Page 262 Some MIDI keyboards can be used with a pianolike sustain pedal that prolongs the sustain period to mimic holding a note. It is received on control number 64. IBM ThinkPad 755CX User's Guide...
Page 263 Additional Information for Telephony Function Telephony Information This section provides additional information about the ThinkPad telephony features. United States Telephone Consumer Protection Act of 1991 (Facsimile Devices) The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a computer or other electronic device to send any 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...
Page 264 Additional Information for Telephony Function IBM ThinkPad 755CX User's Guide...
Page 265 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 Copyright IBM Corp. 1995...
Page 266 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 IBM ThinkPad 755CX User's Guide...
Page 267 Features and Specifications Specifications Size Width: 297 mm (11.7 in.) Depth: 210 mm (8.3 in.) Height: 49.8 mm (1.96 in.) Weight Minimum configuration with: lithium ion battery pack: approximately 2.75 kg (6.1 lb) NiMH battery pack: approximately 2.9 kg (6.4 lb) Environment Note: Temperature (under altitudes of 2438 m (8000 ft)):...
Page 268 IBM product. To avoid electrical shock, always use the power cord and plug with a properly grounded outlet. IBM power cords used in the United States and Canada are listed by Underwriters Laboratory (UL) and certified by the Canadian Standards Association (CSA).
Page 269 Features and Specifications IBM Power Cord Used in These Countries Part Number 25H2205 Argentina, Australia, New Guinea, New Zealand, Papua, Paraguay, Uruguay 25H2207 Bahamas, Barbados, Bermuda, Bolivia, Canada, Cayman Islands, Colombia, Costa Rica, Dominican Republic, Ecuador, El Salvador, Guatemala, Guyana,...
Page 270 Features and Specifications Diskette Standards To get the best performance from your diskette drives, use high-quality diskettes (such as IBM diskettes) that meet or exceed the following standards: 1MB, 3.5-inch, unformatted diskette: ANSI (American National Standards Institute) X3.137 ISO (International Standards Organization) 8860 ECMA (European Computer Manufacturers Association) 100 2MB, 3.5-inch, unformatted diskette:...
Page 271 (with a Machine that is at least functionally equivalent) without charge. If IBM or your reseller is unable to do so, you may return it to your place of purchase and your money will be refunded.
Page 272 Warranties and Notices When a type of service involves the exchange of a Machine or part, the item IBM or your reseller replaces becomes its property and the replacement becomes yours. The replacement may not be new, but will be in good working order and at least functionally equivalent to the item replaced.
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...
Page 274 (with a Machine that is at least functionally equivalent) without charge. If IBM or your reseller is unable to do so, you may return it to your place of purchase and your money will be refunded.
Page 275 Warranties and Notices When a type of service involves the exchange of a Machine or part, the item IBM or your reseller replaces becomes its property and the replacement becomes yours. The replacement may not be new, but will be in good working order and at least functionally equivalent to the item replaced.
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. IBM ThinkPad 755CX User's Guide...
Page 277 IBM intends to make these available in all countries in which IBM operates. Any reference to an IBM product, program, or service is not intended to state or imply that only that IBM product, program, or service may be used. Any functionally equivalent...
Page 278 Pentium Intel Corporation Phoenix Phoenix Technologies, Ltd. PRODIGY Prodigy Services, Inc. QSound QSound, Inc. Sharp Sharp Corporation Sound Blaster Creative Labs, Inc. Underwriters Laboratory Western Digital Western Digital Corporation Windows Microsoft Corporation Wizard Sharp Corporation IBM ThinkPad 755CX User's Guide...
Page 279 Properly shielded and grounded cables and connectors must be used in order to meet FCC emission limits. Proper cables and connectors are available from IBM authorized dealers. IBM is not responsible for any radio or television interference caused by using other than recommended cables and connectors or by unauthorized changes or modifications to this equipment.
Page 280 If they do, you will be given advance notice so as to give you an opportunity to maintain uninterrupted service. 6. If you experience trouble with this built-in modem, contact your IBM Authorized Seller, or the IBM Corporation, 500 Columbus Avenue, Thornwood, NY 10594, 1-800-772-2227, for repair/warranty information.
Page 281 Warranties and Notices Installation and Operating Instructions Addendum for United Kingdom Users Users of the IBM ThinkPad 755CX modem function in the United Kingdom (U.K.) must pay close attention to the statements contained in this Addendum. Modem Connection 1. The modem is suitable for connection to the public switched telephone network (PSTN) provided by British Telecommunications plc or Hull City Telephone Department.
Page 282 Users of this modem are advised that they are only approved for connection to the PSTN via the interface supplied by IBM. Connection of a modem to the PSTN by any other means will invalidate the approval.
Page 283 3. Repeat attempts The IBM ThinkPad 755CX can determine when to initiate a new call attempt to a number over the PSTN after an ineffective attempt to the same number. This is called repeat attempt feature.
Page 284 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 of n. 3. The durations given in this table are measured from cleardown to reseizure. IBM ThinkPad 755CX User's Guide...
Page 285 Glossary This glossary includes terms and applications, a form of graphics in an definitions from the IBM Dictionary of area of computer memory or storage that Computing (New York: McGraw-Hill, can be displayed as an image. 1994). boot. To prepare a computer system for ac.
Page 286 When power is parallel port. A port used to attach turned on again, the computer such devices as dot-matrix printers and IBM ThinkPad 755CX User's Guide...
Page 287 input/output units; it transmits data 1 byte reboot. Restart all operations of the at a time. computer as if the power were just turned partial suspend mode. A kind of suspend mode where only a part of the resume. To begin computer operations system components uses power.
Page 288 IBM ThinkPad 755CX User's Guide...
Page 289 196 fuel-gauge program, using 98 Mwave support software 192 operating time 20, 92 PCMCIA device driver 183 preserving battery-pack life 103 ThinkPad Features program 180 problems 211 DIMM adapter 137 replacing 95 discriminator 88 diskette drive Copyright IBM Corp. 1995...
Page 290 114 expansion unit several hard disk drives, attaching 172 using 123 speaker volume control, using Fn hard-disk password key 49 changing 116 external devices prompt 34 Dock I or II 172 removing 117 IBM ThinkPad 755CX User's Guide...
Page 291 hard-disk password (continued) setting 115 using 114 Kensington lock with power-on password 122 keyhole 5, 13 with supervisor password 122 using 131 wrong hard-disk password, keyboard entering 114 Easy-Setup 43 hardware conflicts 227 location 13 hardware specifications 251 machine specifications 249 headphone jack 5, 15 securing, from opening 130 heat output, machine specifications 251...
Page 292 17 parallel Easy-Setup 43 online book 29 parallel connector 5 operating systems, installing location and function 15 DOS 176 part numbers, power cords 252 OS/2 176 password 44 Windows 177 option cover IBM ThinkPad 755CX User's Guide...
Page 293 password (continued) PC Card Director (continued) Easy-Setup 44 installing, for DOS 186 hard-disk password installing, for OS/2 185 changing 116 installing, for Windows 187 power-on password, using using 62 with 122 PCMCIA card removing 117 See PC Card setting 115 PCMCIA device driver using 114 installing, for DOS 186...
Page 294 IC DRAM card 143 size, machine specifications 251 modem/fax port 155 software option cover 150 CONFIG.SYS, example for PC PC Card 136 Cards 236 PC Card lock 132 CONFIG.SYS, updating for PC power-on password 113 Cards 238 IBM ThinkPad 755CX User's Guide...
Page 295 software (continued) system-status indicators (continued) EMS, specifying 235 PC Card active 16 problems 215 power on 17 Sound Blaster support 75 scroll lock 17 speaker (built-in) speaker 16 location and function suspend mode 17 speaker indicator 16 systemboard specifications Easy-Setup 43 battery pack 251 heat output 251 humidity, environment 251...
Page 296 See display driver Video Features Diskette 3 virtual screen 38 volume control location and function 13 warranties and notices, product 255 weight, machine specifications 251 Windows Version 3.11 or later installing 177 IBM ThinkPad 755CX User's Guide...

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