Lenovo ThinkPad T420 (English) User Guide
Lenovo ThinkPad T420 Manual
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- Lenovo ThinkPad T420 | (English) User Guide - Page 1
User Guide ThinkPad T420 and T420i - Lenovo ThinkPad T420 | (English) User Guide - Page 2
To refer to them, go to http://www.lenovo.com/support, and then click User guides & manuals. Second Edition (October 2011) © Copyright Lenovo 2011. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant a General Services Administration "GSA" contract, use, reproduction, or - Lenovo ThinkPad T420 | (English) User Guide - Page 3
24 System Update 24 ThinkVantage GPS 24 ThinkVantage Productivity Center . . . . . 24 Chapter 2. Using your computer . . . 25 Register your computer 25 Frequently asked questions 25 Special keys and buttons 27 ThinkVantage button 27 Numeric keypad 27 © Copyright Lenovo 2011 Function key - Lenovo ThinkPad T420 | (English) User Guide - Page 4
and device drivers 108 Solving recovery problems 109 Chapter 6. Replacing devices . . . . 111 Static electricity prevention 111 Replacing the battery 111 Replacing the hard disk drive 115 Replacing the keyboard 119 Replacing memory 123 Installing and replacing the mSATA solid state drive 127 - Lenovo ThinkPad T420 | (English) User Guide - Page 5
Bus problems 232 A docking station or port replicator problem 232 Chapter 11. Getting support . . . . 233 Before you contact Lenovo 233 Register your computer 233 Download system updates 233 Record information 233 Getting help and service 234 Using diagnostic programs 234 Lenovo Support Web - Lenovo ThinkPad T420 | (English) User Guide - Page 6
iv User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 7
from the heat that your computer generates. When your computer is turned on or the battery is charging, the base, the palm rest, and some other parts may become hot. The temperature they reach depends on the amount of system activity and the level of charge in the battery. Extended contact with your - Lenovo ThinkPad T420 | (English) User Guide - Page 8
or the Lenovo Limited Warranty. For more information, see the Safety and Warranty Guide came with your computer. Customer safety is important. Our products are developed to be safe and effective. However, personal computers are electronic devices. Power cords, power adapters, and other features can - Lenovo ThinkPad T420 | (English) User Guide - Page 9
. For more information, see the Safety and Warranty Guide came with your computer. Service and upgrades Do not attempt to service a product yourself unless instructed to do so by the Customer Support Center or your documentation. Only use a Service Provider who is approved to repair your particular - Lenovo ThinkPad T420 | (English) User Guide - Page 10
contact the Customer Support Center. Although there are no moving parts in your computer after the power cord has been disconnected, the following warnings are required for your safety. CAUTION: Hazardous moving parts. Keep fingers and other body parts away. CAUTION: Before replacing any CRUs, turn - Lenovo ThinkPad T420 | (English) User Guide - Page 11
the plug into the outlet, contact an electrician for an approved outlet adapter or to replace the outlet with one that enables this safety feature. Never overload an electrical outlet. The overall system load should not exceed 80 percent of the branch circuit rating. Consult an electrician for - Lenovo ThinkPad T420 | (English) User Guide - Page 12
computers, utilize a rechargeable battery pack to provide system power when in portable mode. Batteries supplied by Lenovo for use with your product have been tested for compatibility and should only be replaced with approved parts. This system does not support batteries that are not genuine Lenovo - Lenovo ThinkPad T420 | (English) User Guide - Page 13
power adapters, and many accessories can generate heat when turned on and when batteries are charging. Notebook computers can generate a significant amount of heat due to their compact size. Always follow these basic precautions: • When your computer is turned on or the battery is charging, the base - Lenovo ThinkPad T420 | (English) User Guide - Page 14
fire, water, or structural damage. • Disconnect the attached power cords, battery pack, and all the cables before you open the device covers, unless instructed otherwise in the installation and configuration procedures. • Do not use you computer until all internal parts enclosures are fastened into - Lenovo ThinkPad T420 | (English) User Guide - Page 15
. 3. Remove signal cables from connectors. 4. Remove all cables from devices. The power cord must be disconnected from the wall outlet or receptacle before installing all other electrical cables connected to the computer. The power cord may be reconnected to the wall outlet or receptacle only after - Lenovo ThinkPad T420 | (English) User Guide - Page 16
controls instruments, and avoid direct exposure to the beam. Liquid crystal display (LCD) notice CAUTION: For products with mercury-containing fluorescent to excessive sound pressure levels. If your Lenovo computer came with headphones or earphones in the package, as a set, Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 17
the cord on this product or cords associated with accessories sold with this product will expose you to lead, a chemical known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. Save these instructions. © Copyright Lenovo 2011 - Lenovo ThinkPad T420 | (English) User Guide - Page 18
xvi User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 19
controls, connectors, and indicators This section introduces you to the hardware features of your computer, and then gives you the basic information you'll need to start taking advantage of its functions. • "Front view" on page 2 • "Right-side view" on page 5 • "Left-side view" on page 7 • "Rear - Lenovo ThinkPad T420 | (English) User Guide - Page 20
view Figure 1. ThinkPad T420/T420i front view 1 Computer display 3 Fingerprint reader 5 TrackPoint pointing stick 7 System and power-status indicators 9 Built-in microphone (left) 11 ThinkLight 13 UltraConnect wireless antennas (right) 15 Forward and Back keys 17 Touch pad 19 Fn key 21 Built-in - Lenovo ThinkPad T420 | (English) User Guide - Page 21
system is still not reset, remove the ac power adapter and the battery. 3 Fingerprint reader Some models have a fingerprint reader. The fingerprint authentication technology enables you to use your fingerprint to start the computer and enter the ThinkPad Setup. For details, refer to the instructions - Lenovo ThinkPad T420 | (English) User Guide - Page 22
antenna If your computer has integrated bluetooth features, refer to "Using Bluetooth" on page 44 for more information. 19 Fn key Use the Fn key to take advantage of ThinkPad® functions, such as turning on the ThinkLight. To use ThinkPad functions, press Fn + the required function key marked in blue - Lenovo ThinkPad T420 | (English) User Guide - Page 23
compatible with a USB interface, such as a printer or a digital camera. Note: Your computer is compatible with USB 1.1 and 2.0. You can also connect an external SATA device, such as an external hard disk drive, to this connector on some models. Note: To avoid damaging the connector, be careful - Lenovo ThinkPad T420 | (English) User Guide - Page 24
microphone. For more information about the audio devices supported by the combo audio jack of your computer and the audio jacks of ThinkPad Mini Dock Series 3 and ThinkPad Mini Dock Plus Series 3, and ThinkPad Mini Dock Plus Series 3 (170 W), see "Using audio features" on page 77. 6 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 25
Left-side view Figure 3. ThinkPad T420/T420i left-side view 1 Fan louvers (left) 3 Ethernet connector 5 USB connector (left) 2 Monitor connector 4 DisplayPort connector 6 Smart card slot 1 Fan louvers (left) The internal fan and louvers enable air to circulate in the computer and cool the central - Lenovo ThinkPad T420 | (English) User Guide - Page 26
as a printer or a digital camera. Note: Your computer is compatible with USB 1.1 and 2.0. 6 Smart card slot Your computer has the Smart card slot. For details, refer to the instructions in "Using the media card reader" on page 79. Bottom view Figure 4. ThinkPad T420/T420i bottom view 8 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 27
1 SIM card slot 3 Docking connector 5 Hard disk drive or solid state drive 2 Battery 4 Memory-upgrade slot 6 PCI Express Mini Card slot for wireless WAN card or mSATA solid state drive 1 SIM card slot If your computer has a wireless WAN feature, it may require a SIM (Subscriber Identification - Lenovo ThinkPad T420 | (English) User Guide - Page 28
how to enable the Always On USB connector function, refer to the on-line help of the Power Manager program. Note: Your computer is compatible with USB 1.1 and 2.0. 3 Power jack The ac power adapter cable connects to the computer power jack to provide power to the computer and charge the battery. 10 - Lenovo ThinkPad T420 | (English) User Guide - Page 29
louvers enable air to circulate in the computer and cool the central processor. Note: To avoid impeding airflow, do not place any obstacle in front of the fan. Status indicators The status indicators show the current status of your computer. System-status indicators 1 Device Access A hard disk drive - Lenovo ThinkPad T420 | (English) User Guide - Page 30
moving the cursor. To enable or disable this mode, press ScrLk. Not all application programs support this function. Power-status indicators The computer has status indicators that show the mode (sleep/standby, hibernation, or normal), ac power status, the status of the battery. The following shows - Lenovo ThinkPad T420 | (English) User Guide - Page 31
(COA) label. Machine type and model label The machine type and model label identifies your computer. If you contact Lenovo for help, the machine type and model number will enable support technicians to identify your computer and provide the highest level of service. Chapter 1. Product Overview 13 - Lenovo ThinkPad T420 | (English) User Guide - Page 32
IC Certification number label There is no FCC ID or IC Certification number for the PCI Express Mini Card shown on the enclosure of your computer. The FCC ID and IC Certification number label is affixed on the card installed in the PCI Express Mini Card slot of your - Lenovo ThinkPad T420 | (English) User Guide - Page 33
and replacing the PCI Express Mini Card for wireless WAN" on page 137. Certificate of Authenticity label The Certificate of Authenticity label for the preinstalled operating system is attached. Printed on this label are the product ID and the product key information for your computer. Record - Lenovo ThinkPad T420 | (English) User Guide - Page 34
depending on the model • Brightness control • ThinkLight • Integrated camera (on some models) • Built-in microphones (on some models) Keyboard • 89-key, 90-key, or 94-key • UltraNav (TrackPoint and multi-touch touch pad) • Fn key function • ThinkVantage button • Volume control buttons 16 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 35
mute button • Microphone mute button Docking connector Optical drive • Multi-Burner drive Wireless features • Integrated wireless LAN • Integrated Bluetooth ( ) maximum, or 170 W (580 Btu/hr) maximum (depending on the model) Power source (AC adapter) • Sine-wave input at 50 to 60 Hz • Input rating - Lenovo ThinkPad T420 | (English) User Guide - Page 36
battery power, see the Power Manager Battery Gauge in the task bar. • The Power Manager also displays a green, yellow and red indication. A battery under warranty with a red indication is eligible for a warranty replacement. Operating environment This section provides information about your computer - Lenovo ThinkPad T420 | (English) User Guide - Page 37
23 • "System Update" on page 24 • "ThinkVantage GPS" on page 24 Note: To learn more about ThinkVantage technologies and other computing solutions, offered by Lenovo, go to: http://www.lenovo.com/support Accessing applications in Windows 7 If you are using the Windows 7 operating system, you can - Lenovo ThinkPad T420 | (English) User Guide - Page 38
System and Security Lenovo - Power Controls Recovery Media System and Security Lenovo - Factory Recovery Disks Rescue and Recovery System and Security Lenovo - Enhanced Backup and Restore SimpleTap Programs Lenovo's SimpleTap System Update System and Security Lenovo - Update and Drivers - Lenovo ThinkPad T420 | (English) User Guide - Page 39
the following Web site at: http://www.lenovo.com/support Note: If your computer is a Windows 7 model, Client Security Solution is not preinstalled on it. Fingerprint Software If your system comes with a fingerprint reader, the Fingerprint Software program enables you to enroll your fingerprint and - Lenovo ThinkPad T420 | (English) User Guide - Page 40
program, see "Locating computer controls, connectors, and indicators" on page 1. The Lenovo Solution Center program enables you to troubleshoot and resolve computer problems. It combines diagnostic tests, system information collection, security status, and support information, along with hints - Lenovo ThinkPad T420 | (English) User Guide - Page 41
: If your computer is a Windows 7 model, Presentation Director is not supported because the Windows 7 operating system handles the external displays instead. Product Recovery This program enables you to create recovery media to restore the contents of the system drive or hard disk drive to the same - Lenovo ThinkPad T420 | (English) User Guide - Page 42
you can download it from http://support.lenovo.com. System Update The System Update program helps you keep the software on your computer up-to-date by downloading and installing software packages (ThinkVantage applications, device drivers, UEFI BIOS updates, and other third party applications). Some - Lenovo ThinkPad T420 | (English) User Guide - Page 43
the use of ThinkPad notebook. To ensure that you receive the best performance from your computer, browse the following Web page to find information such as aids for troubleshooting and answers to frequently asked questions at: http://www.lenovo.com/support/faq Can I get my user guide in another - Lenovo ThinkPad T420 | (English) User Guide - Page 44
Notice on deleting data from your hard disk drive or solid state drive" on page 100. Getting connected in different locations is a challenge? • To troubleshoot a wireless networking issue, see http://www.lenovo.com/support/faq. • Take advantage of the networking features by use of Access Connections - Lenovo ThinkPad T420 | (English) User Guide - Page 45
with your computer in case you are unable to access this online help when necessary. • "Installing a new operating system" on page 169 • "Computer stops responding" on page 202 • "Power problems" on page 226 Special keys and buttons Your computer has several special keys and buttons. ThinkVantage - Lenovo ThinkPad T420 | (English) User Guide - Page 46
. Note: The functions of the cursor- and screen-control keys are not printed on the keys. Function key combinations By setting the function keys, you can change operational features instantly. To use this function, press and hold the Fn key (1); then press one of the function keys (2). 28 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 47
entering hibernation may cause corruption of the hard drive. - To use Fn+F3, Fn+F4, and Fn+F12 key combinations, you must have the ThinkPad PM device driver installed on your computer. For information on the power management function, refer to "Power management" on page 38. Applying a presentation - Lenovo ThinkPad T420 | (English) User Guide - Page 48
to enable or disable the wireless features, the following device drivers must be installed on your computer beforehand: - Power Management driver - OnScreen Display Utility - Wireless device drivers For information on the wireless features, refer to "Wireless connections" on page 43. 30 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 49
brightness level, change the settings of the Power Option in the Control Panel or use Power Manager. • Fn+Spacebar: Enable the FullScreen Magnifier function. • Fn+F2: Lock your computer. • Fn+F8: Change the settings of the UltraNav pointing device. • Fn+PrtSc: Have the same function as the SysRq key - Lenovo ThinkPad T420 | (English) User Guide - Page 50
3 Microphone mute If you mute the sound and then turn off your computer, the sound will remain muted when you turn on your computer again. To turn on the sound, press the plus (+) or minus (-) button. Setting the volume Each device has volume controls, which you can set. To open the window for - Lenovo ThinkPad T420 | (English) User Guide - Page 51
recording device from the drop-down list box. 5. Click OK. Windows key and Application key The following two keys are on your computer keyboard: 1 Windows key If you press this key, the Start menu of Windows is displayed or hidden. If you press this key and another key at the same time, the System - Lenovo ThinkPad T420 | (English) User Guide - Page 52
Fn+F8, and the UltraNav Device Settings window is displayed. In this window, click Manage Settings. A mouse properties window is displayed. Click the UltraNav tab. • Use the Start menu of your computer as follows: - For Windows 7 and Windows Vista: Click Start ➙ Control Panel ➙ Hardware and Sound - Lenovo ThinkPad T420 | (English) User Guide - Page 53
-Select function. • Enable the Magnifying Glass. • Enable the TrackPoint scrolling function. • Enable the TrackPoint Scrolling Tips. To customize the TrackPoint, do as follows: 1. Press Fn+F8. A panel for UltraNav Device Settings pops up. 2. Click Manage Settings to open the Mouse properties window - Lenovo ThinkPad T420 | (English) User Guide - Page 54
in which you want the pointer to move. The functions of the left (3) and right (2) click buttons correspond to those of the left and right mouse buttons on a conventional mouse. Using the multi-touch touch pad The touch pad of your computer supports multi-touch with which you can zoom in, zoom - Lenovo ThinkPad T420 | (English) User Guide - Page 55
. To enable the display of the UltraNav icon on the system tray, do as follows: 1. Press Fn+F8. A panel headed UltraNav Device Settings pops up. 2. Click Manage Settings to open the Mouse properties window. 3. Click the UltraNav tab. 4. Select the check box for Show UltraNav icon on the system tray - Lenovo ThinkPad T420 | (English) User Guide - Page 56
battery charge will last. There are two main factors: • How much energy is stored in the battery when you begin to work. • The way you use your computer: how often you access the hard disk drive or the solid state drive, how bright you make the computer display. Using the ac power adapter The power - Lenovo ThinkPad T420 | (English) User Guide - Page 57
management features such as power modes, screen blank, sleep (standby), and hibernation. Managing your battery power With Power Manager, you can adjust your power settings to give you the best balance between performance and power saving. To start the utility program, do as follows: • For Windows - Lenovo ThinkPad T420 | (English) User Guide - Page 58
Settings. 3. Select Power off display. 4. Click OK. The next time you press Fn+F3, you can turn off the computer display. • Sleep (standby in Windows XP). In sleep (standby) mode, your work is saved to memory, and then the solid state drive or the hard disk drive and the computer display are turned - Lenovo ThinkPad T420 | (English) User Guide - Page 59
Enabling the battery alarm You can program your computer so that when the battery power falls below a certain level, three events occur: the alarm goes off, a message is displayed, and the LCD is turned off. Do as follows: 1. Start Power Manager. 2. Click the Global Power Settings tab. 3. For Low - Lenovo ThinkPad T420 | (English) User Guide - Page 60
ordinances or regulations and your company's safety standards. This system does not support batteries that are not genuine Lenovo-made or authorized. The system will continue to boot, but may not charge unauthorized batteries. Attention: Lenovo has no responsibility for the performance or safety of - Lenovo ThinkPad T420 | (English) User Guide - Page 61
LAN access point and the computer. • For the best connection of the wireless LAN feature, open your computer display to an angle of slightly more than 90 degrees. • If you use the wireless feature (the 802.11 standard) of your computer simultaneously with a Bluetooth option, data transmission speed - Lenovo ThinkPad T420 | (English) User Guide - Page 62
is displayed. You can enable or disable the Bluetooth features with a single click. To configure a Bluetooth device or manage connection settings, you can use Bluetooth Devices in Control Panel. 1. Click Start ➙ Control Panel. 2. Click Hardware and Sound. 3. Click Devices and Printers (in Windows - Lenovo ThinkPad T420 | (English) User Guide - Page 63
your computer is equipped with the Integrated Bluetooth features, you can enable or disable the features by pressing Fn+F5. If you press Fn+F5, a list of wireless features is displayed. You can enable or disable the Bluetooth features with a single click. In Windows XP, you can use either ThinkPad - Lenovo ThinkPad T420 | (English) User Guide - Page 64
devices can find your computer • Configuring your computer settings so that your computer can find remote Bluetooth-enabled devices • Configuring, on your computer, the Bluetooth-enabled services provided for remote devices • Configuring the services on remote Bluetooth-enabled devices • Displaying - Lenovo ThinkPad T420 | (English) User Guide - Page 65
computer if necessary. If you did not turn the Bluetooth power on before installing ThinkPad Bluetooth with Enhanced Data Rate Software, that is, if you skipped step 1- replace the Bluetooth driver as follows: 1. Click Start ➙ Control Panel. 2. Click Performance and Maintenance; then click System - Lenovo ThinkPad T420 | (English) User Guide - Page 66
Radios to extract the Bluetooth Radios device tree. 5. Double-click the ThinkPad Bluetooth with Enhanced Data Rate icon to open the Properties window. 6. Click the Driver tab; then click Update Driver. 7. Click No, not this time, and then click Next. 8. Select Install from a list or specific - Lenovo ThinkPad T420 | (English) User Guide - Page 67
3 Note: If you have trouble in making a connection, try moving your computer closer to your wireless access point. Enabling or disabling the wireless feature To enable or disable the wireless feature, press Fn+F5. A list of wireless features is displayed. You can turn the feature on and off with - Lenovo ThinkPad T420 | (English) User Guide - Page 68
Connections wireless status icon in the system tray. • Click Power Off Wireless Radio. Notes: • You can use the wireless radio switch to disable the wireless radio of all the wireless devices on your computer. • If your computer is a Windows 7 model, to display the Access Connections status icon and - Lenovo ThinkPad T420 | (English) User Guide - Page 69
, the function can work only if it is compatible with the server equipment at your ISP. Industry standard fax support up to 14.4 Kbps: Fax protocols • V.21 Ch 2 (300-bps fax) • V.17 (up to 14.4-Kbps fax) • V.29 (9600-bps fax) • V.27ter (4800-bps fax) Computer telephony function support: • DTMF - Lenovo ThinkPad T420 | (English) User Guide - Page 70
the Enter key. Spaces in mixed case. A Service Enables Caller ID with unformatted presentation to the DTE. 0: Reports Caller ID with formatted presentation to the DTE. 1: Reports Caller ID with unformatted presentation to the DTE. 0: Selects normal speed buffered mode (disables error - Lenovo ThinkPad T420 | (English) User Guide - Page 71
to negotiate an error corrected link). error-correction connection results in the modem hanging up. 0: Terminates test in progress. 1: Initiates local analog loopback, V54 Loop 3. If a connection exists when this command is issued, the modem hangs up. The CONNECT XXXX message is displayed - Lenovo ThinkPad T420 | (English) User Guide - Page 72
Message Control W[] 54 User Guide 7: Reports modem data pump model and internal code revision. 8: Reports the date and the time of the modem driver build. 9: Reports Country. 8-bit country code. The value is the hexadecimal. 0: Disables command echo. 1: Enables - Lenovo ThinkPad T420 | (English) User Guide - Page 73
speed and the error correction protocol. detection reporting is enabled, and busy detection reporting is enabled. 4: CONNECT < and busy detection reporting are both enabled. 0: RLSD is of DTR, the modem instructs the underlying modem to perform the remote modem is controlled by the +ETBM parameter - Lenovo ThinkPad T420 | (English) User Guide - Page 74
Disables flow control. 3: Enables RTS or CTS flow control. 4: Enables XON or XOFF flow control. 5: normal mode. (speed buffering) 5: Select asynchronous operation in error correction. 0 (autodetect), 2400, 4800, 9600 local port rate. 1: Enable reporting of local port rate. 56 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 75
tone before continuing with the dial string. ,: Dial pause. ;: Return to command state. ^: Toggle calling tone enable or disable. (), -, : Ignored. 0: The modem will release the line if the modem is 0: Off 1: Low volume 2: Medium volume 3: High volume Chapter 2. Using your computer 57 - Lenovo ThinkPad T420 | (English) User Guide - Page 76
Current &V Configuration and Stored Profile Store Current &W Configuration Display Blacklisted *B Numbers Display Delayed Numbers *D Last Call Status Report #UD Call Waiting Enable +PCW= +PMH Modem-on-Hold Enable +PMH= 0: Speaker off. 1: Speaker on during - Lenovo ThinkPad T420 | (English) User Guide - Page 77
PQC Initiate Modem-on-Hold Modem-on-Hold Hook Flash Shortened Phase 1/2 control +PMHR +PMHF +PQC= 0: Deny modem-on-hold Enable Short Phase 1 and Short Phase 2. 1: Enable Short Phase 1 only. 2: Not supported. 3: Disable Short Phase 1 and Short Phase 2. Chapter 2. Using your computer - Lenovo ThinkPad T420 | (English) User Guide - Page 78
The following table lists the basic codes that the modem sends to your computer in response to the commands you enter. They are called result codes. is 300 bps and line speed is enabled, or the DTE speed is 300 bps and DTE speed reporting is enabled. An incoming ring signal is detected User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 79
the DTE speed is 1200 bps and DTE speed reporting is enabled. For X2 and X4, the modem has been instructed to wait for dial tone during dialing but none is received. When cellular phone interface is selected, indicates that cellular service is not currently available. For X3 and X4, if busy tone - Lenovo ThinkPad T420 | (English) User Guide - Page 80
23 answer connection and line speed reporting is enabled. For X4, sent when a call enabled. (See S95 and Xn.) The modem has connected to the line at 14400 bps and carrier reporting is enabled . (See S95 and Xn.) The modem has connected to the line at 16800 bps and carrier reporting is enabled - Lenovo ThinkPad T420 | (English) User Guide - Page 81
.) The modem has connected to the line at 33600 bps and carrier reporting is enabled. (See S95 and Xn.) Sent when the modem has connected in the MNP mode of error correction, and +ER: message reporting has been enabled. (See S95, Wn, and Xn.) The modem attempted to go off-hook when an - Lenovo ThinkPad T420 | (English) User Guide - Page 82
and modulation reporting is enabled. (See +MR, S95 and Xn.) The modem enabled. (See S95 and Xn.) The modem has connected to the line at 34000 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 36000 bps and carrier reporting is enabled. - Lenovo ThinkPad T420 | (English) User Guide - Page 83
28000 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 29333 bps and carrier reporting is enabled. (See S95 and Xn.) The modem has connected to the line at 30667 bps and carrier reporting is enabled. (See S95 and Xn.) Chapter 2. Using your computer 65 - Lenovo ThinkPad T420 | (English) User Guide - Page 84
enabled. (See S95 and Xn.) The modem has connected to the line at 34667 bps and carrier reporting is enabled enabled. (See S95 and Xn.) The modem has connected to the line at 54667 bps and carrier reporting is enabled control. 3. See S95 for extended result code enabling n is the new value you want - Lenovo ThinkPad T420 | (English) User Guide - Page 85
Control 136 (no compression) or 138 (compression) Result Code Messages Control: Bit 0 CONNECT result code indicates DCE speed instead of DTE speed. Bit 1 Reserved. Bit 2 Enable Bit 3 Enable +ER:XXXX result code (XXXX=protocol identifier). (See +ER.). Bit 4 Reserved. Bit 5 Enable +DR result - Lenovo ThinkPad T420 | (English) User Guide - Page 86
telephone utility to learn the proper procedure for plugging in and unplugging your modem and power cord. DANGER support pulse dialing rather than tone dialing. To change dialing methods, refer to your Windows online help. Note: In many regions, you cannot use the built-in modem function until Lenovo - Lenovo ThinkPad T420 | (English) User Guide - Page 87
Support Center in that region. Using a projector or external display Your computer comes with many features to increase the enjoyment of your computer size larger, do as follows: For Windows 7: 1. Right-click on the desktop, and click Personalize. 2. Click Display at the left. 3. Select the Medium - Lenovo ThinkPad T420 | (English) User Guide - Page 88
parts by moving the image with the TrackPoint or another pointing device. You can move the display output to the computer display, the external monitor, or both in the Display Settings window (in Windows XP, Display Properties window). Connecting an external monitor To attach an external monitor, do - Lenovo ThinkPad T420 | (English) User Guide - Page 89
computer cannot detect the external monitor, the New Display Detected dialog box does not open. For details, refer to the Windows online help. For Windows XP: 1. Turn off the computer monitor that supports only VGA mode (640x480 resolution), do not view output on both the computer display and the - Lenovo ThinkPad T420 | (English) User Guide - Page 90
or provide confirmation. 10. Click the Driver tab. 11. Click Update Driver. 12. Click Browse my computer for driver software, and then click Let me pick from a list of device drivers on my computer. 13. Clear the Show compatible hardware check box. 14. Select Manufacturer and Model for your monitor - Lenovo ThinkPad T420 | (English) User Guide - Page 91
operating system, you must install the display driver for your monitor that is supplied with the computer, and the Monitor INF file that is supplied with the external monitor. • If you set a resolution higher than the resolution you are using on the panel, and use a panel that does not support that - Lenovo ThinkPad T420 | (English) User Guide - Page 92
, or HDMI ports. The DisplayPort connector of your computer supports audio as well as video streaming. Setting up a presentation Note: If your computer is a Windows 7 model, it does not support Presentation Director, but the Fn+F7 or Win+P key combination is available for switching display output to - Lenovo ThinkPad T420 | (English) User Guide - Page 93
function, you can display output on both the computer display and an external monitor. You can also display different desktop images on each monitor. You can use the Extend desktop function without changing any settings. If the function does not work, refer to "Enabling the Extend desktop function - Lenovo ThinkPad T420 | (English) User Guide - Page 94
of the secondary display. 5. Place the icons for the monitors so that they touch. Note: You can set the monitors in any relative position, but the icons must touch each other. 6. Click OK to apply the changes. Using the NVIDIA Optimus Graphics feature Some ThinkPad notebooks support NVIDIA Optimus - Lenovo ThinkPad T420 | (English) User Guide - Page 95
audio devices attached to the jacks on your computer or docking station are supported. Table 6. Audio feature list Combo audio jack Headphone jack of the docking station Headset with a 3.5 mm 4-pole plug Headphone and microphone functions supported Only headphone function supported Conventional - Lenovo ThinkPad T420 | (English) User Guide - Page 96
opens. 3. In the Communications Utility window, configure the camera settings depending on your individual needs. Using the ThinkLight feature Because your computer can travel with you, you might need to use it in less than perfect lighting conditions. To illuminate the keyboard by turning on your - Lenovo ThinkPad T420 | (English) User Guide - Page 97
the optical drive Note: Your computer support only the MultiBurner driver. MultiBurner drive This drive can read computer has a media card reader slot, it supports the following cards: • SD card • SDHC card • SDXC card • MultiMediaCard (MMC) Notes: • Your computer does not support the CPRM feature - Lenovo ThinkPad T420 | (English) User Guide - Page 98
confirmation. 4. From the Action menu, select Add legacy hardware. The Add Hardware Wizard starts. 5. Follow the instructions on the screen. • For Windows Vista and Windows XP: - Open Control Panel and switch to Classic view. - Double-click the Add Hardware icon. The Add Hardware Wizard starts - Lenovo ThinkPad T420 | (English) User Guide - Page 99
the Safely Remove Hardware icon in the task bar • Select corresponding item to eject the card from the Windows operating system. • Press the card to eject it from your computer. • Remove the card from your computer and store it safely for future use. Note: If you do not remove the card from your - Lenovo ThinkPad T420 | (English) User Guide - Page 100
82 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 101
and comfort Because your computer enables you to work in so many places, it is important that you remain attentive to good posture, good lighting and proper seating. By keeping these considerations in mind, you can improve performance and achieve greater comfort. Lenovo is committed to providing - Lenovo ThinkPad T420 | (English) User Guide - Page 102
your computer to best suit your needs. Access the following Web site to view some of these options: http://www.lenovo.com/accessories/services/index.html. Explore your options for docking solutions and external products that can provide the adjustability and features that you want. ThinkPad features - Lenovo ThinkPad T420 | (English) User Guide - Page 103
models support the FullScreen Magnifier function, which enlarges the active window and makes it easier for you to use the computer display. To enable the FullScreen Magnifier function, press Fn+Spacebar. The active window is magnified and the FullScreen Magnifier icon is displayed in the system tray - Lenovo ThinkPad T420 | (English) User Guide - Page 104
such as Internet, Bluetooth, etc.) service, check the services with the airline before boarding the airplane. • If there are restrictions on the use of computers with the wireless feature on an airplane, you need to disable it before boarding. To disable it, refer to the instructions in "Enabling or - Lenovo ThinkPad T420 | (English) User Guide - Page 105
• An adapter to connect to a phone line in that country Other items you may wish to consider • ThinkPad AC/DC Combo Adapter • External storage device • Phone line splitter, in case you need to dial manually or use your modem without disconnecting the phone line Chapter 3. You and your computer 87 - Lenovo ThinkPad T420 | (English) User Guide - Page 106
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from your hard disk drive or solid state drive" on computer; then secure the chain on the lock to a stationary object. Refer to the instructions shipped with the mechanical lock. Note: You are responsible for evaluating, selecting, and implementing the locking devices and security features. Lenovo - Lenovo ThinkPad T420 | (English) User Guide - Page 108
the logo screen is displayed, press F1. The ThinkPad Setup opens. 5. Select Security, using the cursor directional keys to move down the menu. 6. Select Password. 7. Select Power-on Password. 8. Choose your power-on password, and type it within the brackets on the Enter New Password field. Note: You - Lenovo ThinkPad T420 | (English) User Guide - Page 109
be set and used only by a system administrator. Like a master key, it enables the administrator to get access to any hard drive in a system. The administrator sets the master password; no one else knows it. Then the administrator sets a user password for each computer in the network, and tells each - Lenovo ThinkPad T420 | (English) User Guide - Page 110
must take your computer to a Lenovo reseller or a marketing representative to have the hard disk drive replaced. Proof of purchase is required, and a fee will be charged for parts and service. 19. Press F10 to exit from the Setup Notice window. The next time you turn on your computer, you will have - Lenovo ThinkPad T420 | (English) User Guide - Page 111
minimum length for power-on passwords and hard disk passwords - Changing the setting for the security chip - Enabling or disabling the Boot Device List F12 Option - Enabling or disabling the Boot Order Lock - Enabling or disabling the Flash BIOS Updating by End-Users feature - Enabling or disabling - Lenovo ThinkPad T420 | (English) User Guide - Page 112
must take your computer to a Lenovo reseller or a Lenovo marketing representative to have the system board replaced. Proof of purchase is required, and a fee will be charged for parts and service. 12. Press F10 to exit from the Setup Notice window. The next time you open the ThinkPad Setup, you will - Lenovo ThinkPad T420 | (English) User Guide - Page 113
security chip" on page 96. Note: Microsoft Windows 7 and Windows Vista support TPM management feature. 3. If a Disk Encryption hard disk drive and Encryption solid state drive is installed in your computer, be sure to protect the contents of your computer memory from unauthorized access by use of - Lenovo ThinkPad T420 | (English) User Guide - Page 114
the Security Chip. If you do, the functions assigned to the keys will be erased. • Do not disable the Security Chip. If you do, Client Security Solution will not work. 3. If the Security Chip is removed or replaced, or a new one has been added, the computer will not start. You will hear 4 cycles - Lenovo ThinkPad T420 | (English) User Guide - Page 115
with a power-on password, a hard disk password, or both passwords beforehand, you can start the computer, log on to the system, and enter the ThinkPad Setup by swiping your finger over the reader, without typing a password. Thus fingerprint authentication can replace passwords and enable simple and - Lenovo ThinkPad T420 | (English) User Guide - Page 116
system After you enroll your fingerprint, log on to the system as follows: 1. Set a power-on password or a hard disk password, or both. 2. Turn your computer off the computer or change the password.If you forget your power-on password, you must take your computer to a Lenovo authorized servicer or - Lenovo ThinkPad T420 | (English) User Guide - Page 117
your password or recover data from the hard disk. You must take your computer to a Lenovo authorized servicer or a marketing representative to have the hard disk drive replaced. Proof of purchase is required, and a fee will be charged for parts and service. Setting the fingerprint reader If you want - Lenovo ThinkPad T420 | (English) User Guide - Page 118
hard disk drive, Lenovo provides the Secure Data Disposal tool. To download the tool, go to http://www.lenovo.com/support. Note: Running the application will take a couple of hours. Using and understanding firewalls If your system is preintalled with a firewall program, it protects against computer - Lenovo ThinkPad T420 | (English) User Guide - Page 119
Lenovo provides a full version of antivirus software on your computer with a free 30-day subscription. After 30 days, you must renew the license to continue receiving the antivirus software updates. For more information about how to use your antivirus software, refer to the help system - Lenovo ThinkPad T420 | (English) User Guide - Page 120
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preinstalled applications and device drivers" on page 108 • "Solving recovery problems" on page 109 computer • Reinstall the product • Modify the product using the Additional Files Notes: To prevent potential performance risks or unexpected behavior that might be caused by the new hard disk drive - Lenovo ThinkPad T420 | (English) User Guide - Page 122
media on the Windows 7 operating system or the Windows Vista operating system, do the following: 1. Depending on the type of your recovery media, connect the boot medium (memory key or other USB storage device) to the computer, or insert the boot disc into the optical drive. 2. Repeatedly press and - Lenovo ThinkPad T420 | (English) User Guide - Page 123
Back up your hard drive and select backup operation options. Then, follow the instructions on the screen to complete the backup operation. • To perform a backup operation using the Rescue and Recovery program on the Windows Vista operating system or the Windows XP operating system, do the following - Lenovo ThinkPad T420 | (English) User Guide - Page 124
you are unable to start the Windows operating system, you can use the rescue files feature of the Rescue and Recovery workspace to copy files from your hard disk drive to other media. To start the Rescue and Recovery workspace, do the following: 1. Make sure the computer is turned off. 2. Repeatedly - Lenovo ThinkPad T420 | (English) User Guide - Page 125
Restore your system and follow the instructions on the screen. For more information about the features of the Rescue and Recovery workspace, click Help. Notes: 1. After restoring your hard disk drive to the factory default settings, you might have to reinstall device drivers for some devices. See - Lenovo ThinkPad T420 | (English) User Guide - Page 126
to correct a problem with your computer. To reinstall a device driver for a factory-installed device, do the following: 1. Turn on your computer. 2. Use Windows Explorer or Computer (in Windows XP, My Computer) to display the directory structure of your hard disk drive. 3. Open the C:\SWTOOLS - Lenovo ThinkPad T420 | (English) User Guide - Page 127
file, and follow the instructions on the screen. Attention: If you need updated device drivers, do not download them from the Windows Update Web site. Obtain them from Lenovo. For more information, see "Making sure device drivers are current" on page 196. Solving recovery problems If you are unable - Lenovo ThinkPad T420 | (English) User Guide - Page 128
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on the computer cover or other metal surface. Replacing the battery Before you start, print these instructions. This system does not support batteries that are not genuine Lenovo-made or authorized. The system will continue to boot, but may not charge unauthorized batteries. Attention: Lenovo has no - Lenovo ThinkPad T420 | (English) User Guide - Page 130
or coin cell. Replacing the battery installed in the battery space of your computer To replace the battery, follow the procedure below: 1. Turn off the computer, or enter hibernation mode. Then disconnect the ac power adapter and all cables from the computer. 2. Close the computer display, and turn - Lenovo ThinkPad T420 | (English) User Guide - Page 131
an option. You can attach it to the docking connector of your computer as follows: 1. Turn off the computer, or enter hibernation mode. Then disconnect the ac power adapter and all cables from the computer. 2. Close the computer display, and turn the computer over. Chapter 6. Replacing devices 113 - Lenovo ThinkPad T420 | (English) User Guide - Page 132
power adapter and the cables to the computer. To remove the Extended Life Battery, do the following: 1. Turn off the computer, or enter hibernation mode. Then disconnect the ac power adapter and all cables from the computer. 2. Close the computer display, and turn the computer over. 114 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 133
below and detach the battery. 5. Turn the computer over again. Connect the ac power adapter and the cables to the computer. Replacing the hard disk drive Before you start, print these instructions. You can replace the hard disk drive with a new one which can be purchased from your Lenovo reseller or - Lenovo ThinkPad T420 | (English) User Guide - Page 134
in hibernation mode. Replacement instructions To replace the hard disk drive, do as follows: 1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. 2. Close the computer display, and turn the computer over. 3. Remove the battery. For more information about - Lenovo ThinkPad T420 | (English) User Guide - Page 135
6. Remove the hard disk drive by pulling out the tab. 7. Detach the side rubber rails from the hard disk drive. 8. Attach the side rubber rails to a new hard disk drive. Chapter 6. Replacing devices 117 - Lenovo ThinkPad T420 | (English) User Guide - Page 136
9. Insert the hard disk drive into the slot; then press it firmly into place. 10. Reinstall the cover of the slot as shown in the illustration. 11. Reinstall the screw. 118 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 137
the battery, refer to "Replacing the battery" on page 111. 13. Turn the computer over again. Connect the ac power adapter and the cables to the computer. Replacing the keyboard Before you start, print these instructions. You can use the following procedures to replace the keyboard with a new one - Lenovo ThinkPad T420 | (English) User Guide - Page 138
5. Remove the screw that secures the keyboard. 6. Turn the computer over and open the display. 7. Push hard in the direction shown by the arrows (1) in the drawing to unlatch the front side of the keyboard. The keyboard will open up slightly (2). 120 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 139
lift the keyboard until you can see how it's connected. Hold the keyboard above the computer, and then detach the connector (1). Now the keyboard has been removed (2). Installing the keyboard To install the keyboard, do the following: 1. Attach the connector. Chapter 6. Replacing devices 121 - Lenovo ThinkPad T420 | (English) User Guide - Page 140
2. Insert the keyboard. Make sure that the rear edges of the keyboard are under the frame, as shown by the arrows. 3. Slide the keyboard as shown by the arrows. 4. Close the computer display, and turn the computer over. Reinstall the screw. 122 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 141
in your computer. If you install an SO-DIMM that is not supported by your computer, the computer may beep, and the system may not start or may not work properly. You can purchase the appropriate memory option from your Lenovo reseller or a marketing representative. Chapter 6. Replacing devices 123 - Lenovo ThinkPad T420 | (English) User Guide - Page 142
: 1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. 2. Close the computer display, and turn it over. 3. Remove the battery. For more information, refer to "Replacing the battery" on page 111. 4. Loosen the screw on the memory slot cover (1), and then - Lenovo ThinkPad T420 | (English) User Guide - Page 143
information about how to reinstall the battery, refer to "Replacing the battery" on page 111. Replacing memory in the slot under the keyboard 1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. 2. Close the computer display, and turn it over. 3. Remove - Lenovo ThinkPad T420 | (English) User Guide - Page 144
the keyboard, refer to the "Replacing the keyboard" on page 119. 5. Lift up the insulation sheet (1) to reveal the memory slot. If an SO-DIMM is already in the memory slot, press out on the latches on both edges of the socket at the same time (2)and remove it (3)to make room for the new one - Lenovo ThinkPad T420 | (English) User Guide - Page 145
of memory installed in your computer. Installing and replacing the mSATA solid state drive Before you start, print these instructions. Some ThinkPad models have an mSATA solid state drive. You can replace the mSATA solid state drive with a new one which can be purchased from your Lenovo reseller - Lenovo ThinkPad T420 | (English) User Guide - Page 146
4. Loosen the screw on the memory slot cover (1), then remove the cover (2). 5. Remove the screw (1). The card pops up (2). 6. Remove the card. 128 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 147
the contact edge of a new mSATA solid state drive with the corresponding socket. Notes: • You can also replace the mSATA solid state drive with a Wireless PCI Express Mini Card for Wireless WAN. • To install a new PCI Express Mini Card, refer to "Installing and replacing the PCI Express Mini Card - Lenovo ThinkPad T420 | (English) User Guide - Page 148
the memory slot cover back in place (1), close the cover (2), and then tighten the screw (3). 10. Reinstall the battery. For more information about how to reinstall the battery, refer to the instructions in "Replacing the battery" on page 111. 11. Turn the computer over again. Connect the ac power - Lenovo ThinkPad T420 | (English) User Guide - Page 149
. For more information about how to remove the keyboard, refer to "Replacing the keyboard" on page 119. 5. If a tool for removing connectors is included in the package with the new card, use it to disconnect the cables from the card. If no such tool is included, disconnect the cables by picking - Lenovo ThinkPad T420 | (English) User Guide - Page 150
7. Remove the card. 8. Align the contact edge of the new PCI Express Mini Card with the corresponding socket contact of the computer. 132 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 151
: If the new PCI Express Mini Card has two connectors, as in the next drawing, put the white cable in the cable protection tube. 9. Pivot the card until you can snap it into place by pressing the upper side of the connectors (1). Secure the card with the screw (2). Chapter 6. Replacing devices 133 - Lenovo ThinkPad T420 | (English) User Guide - Page 152
display, and turn the computer over. 3. Remove the battery. For more information about how to remove the battery, refer to "Replacing the battery" on page 111. 4. Remove the keyboard. For more information about how to remove the keyboard, refer to "Replacing the keyboard" on page 119. 134 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 153
with the new card, use it to disconnect the cables from the card. If no such tool is included, disconnect the cables by picking up the connectors with your fingers and gently unplugging them. 6. Remove the screw (1). The card pops up (2). Then remove the card (2). Chapter 6. Replacing devices 135 - Lenovo ThinkPad T420 | (English) User Guide - Page 154
7. Remove the card. 8. Align the contact edge of the new card with the corresponding socket contact of the computer (1). Note: If the new PCI Express Mini Card has two connectors, as in the next drawing, put the white cable in the cable protection tube. 136 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 155
the battery, refer to "Replacing the battery" on page 111. 13. Turn the computer over again. Connect the ac power adapter and cables to the computer; then turn it on. Installing and replacing the PCI Express Mini Card for wireless WAN Before you start, print these instructions. Some ThinkPad models - Lenovo ThinkPad T420 | (English) User Guide - Page 156
on the wall. DANGER Electric current from power, telephone, and communication cables is hazardous. computer display, and turn the computer over. 3. Remove the battery. For more information about how to remove the battery, refer to "Replacing the battery" on page 111. 4. Loosen the screw on the memory - Lenovo ThinkPad T420 | (English) User Guide - Page 157
the cables by picking up the connectors with your fingers and gently unplugging them. 6. Remove the screw (1). The card pops up (2). Note: Depending on the system configuration of your computer, the card may have only one connector. Chapter 6. Replacing devices 139 - Lenovo ThinkPad T420 | (English) User Guide - Page 158
7. Remove the card. 8. Align the contact edge of the new PCI Express Mini Card with the corresponding socket. 140 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 159
snap it into place by pressing the upper side of each connector (1). Secure the card with the screw (2). Note: Depending on the system configuration of your computer, the card may have only one connector. 10. Connect the cables to the new PCI Express Mini Card (3). Chapter 6. Replacing devices 141 - Lenovo ThinkPad T420 | (English) User Guide - Page 160
To replace the SIM card, do as follows: 1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. 2. Close the computer display, and turn it over. 3. Remove the battery. For more information, refer to "Replacing the battery" on page 111. 142 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 161
about how to reinstall the battery, refer to "Replacing the battery" on page 111. Replacing the solid state drive Before you start, print these instructions. You can replace the solid state drive with a new one which can be purchased from your Lenovo reseller or a marketing representative. To - Lenovo ThinkPad T420 | (English) User Guide - Page 162
, or in hibernation mode. Replacement instructions To replace the solid state drive, do as follows: 1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. 2. Close the computer display, and turn the computer over. 3. Remove the battery. For more information - Lenovo ThinkPad T420 | (English) User Guide - Page 163
6. Remove the solid state drive by pulling out the tab. 7. Detach the side spacer rails from the solid state drive. 8. Attach the side spacer rails to a new solid state drive. Chapter 6. Replacing devices 145 - Lenovo ThinkPad T420 | (English) User Guide - Page 164
9. Insert the solid state drive into the slot; then press it firmly into place. 10. Reinstall the cover of the slot as shown in the illustration. 11. Reinstall the screw. 146 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 165
12. Reinstall the battery. For more information about how to reinstall the battery, refer to "Replacing the battery" on page 111. 13. Turn the computer over again. Connect the ac power adapter and the cables to the computer. Chapter 6. Replacing devices 147 - Lenovo ThinkPad T420 | (English) User Guide - Page 166
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to expand the capabilities of your computer, Lenovo has a number of hardware accessories and upgrades to meet your needs. Options include memory, storage, modems, networking adapters, docking stations and port replicators, batteries, power adapters, printers, scanners, keyboards, mice, and more. You - Lenovo ThinkPad T420 | (English) User Guide - Page 168
not supported when your computer is docked or has slice battery. 1. Click the Show hidden icons in the task bar, then click Safely Remove Hardware and Eject Media icon (in Windows Vista and Windows XP, select the Safely Remove Hardware icon in the task bar), and then stop the device. 150 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 169
to the left, then pull out the Ultrabay device (3). 3. Insert the replaceable device into the bay; then press the device firmly into the connector. Note: If a hard disk password is set on a hard disk drive, you cannot hot-swap the drive. First remove the hard disk password, and then do the hot swap - Lenovo ThinkPad T420 | (English) User Guide - Page 170
unlocked position, slide the bay eject latch (2) to the left, then pull out the Ultrabay device (3). Note: The computer returns from sleep (standby) mode and the pop-up window appears; then the computer automatically goes into sleep (standby) mode again. The bay status indicator (1) turns off. 152 - Lenovo ThinkPad T420 | (English) User Guide - Page 171
device firmly into the connector. 3. Press the Fn key to return from sleep (standby) mode. Inserting the hard disk drive into the adapter The ThinkPad Serial Hard Drive Bay Adapter III (hard disk drive adapter), which is available as an option, enables you to upgrade the capacity of your computer - Lenovo ThinkPad T420 | (English) User Guide - Page 172
3. Insert the hard disk drive with the label facing upward as shown: Note: If your hard disk drive has a strap, be sure not to leave it under the drive. 4. Connect the hard disk drive to its connector. 154 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 173
device. Inserting the hard disk drive adapter into the bay Notes: • Use the ThinkPad Serial Hard Drive Bay Adapter III designed specifically for use with your computer. • The ThinkPad Serial Hard Drive Bay Adapter III supports only 2.5 inch (7 mm height) hard disk drive. After you insert a hard - Lenovo ThinkPad T420 | (English) User Guide - Page 174
W)" on page 164 • "Security feature" on page 166 • "Using the system lock key" on page 168 Front view ThinkPad Port Replicator Series 3 1 The power switch turns the computer on and off. 2 The eject button releases the computer from the ThinkPad Port Replicator Series 3 when pressed. 156 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 175
a guide up the docking connector on your computer as you attach the ThinkPad Port Replicator Series 3. 4 The docking connector is where you attach your computer. ThinkPad Mini Dock Series 3 1 The power switch turns the computer on and off. 2 The key lock indicator lights when the system lock key is - Lenovo ThinkPad T420 | (English) User Guide - Page 176
is a guide up the docking connector on your computer as you attach the ThinkPad Mini Dock Plus Series 3 or the ThinkPad Mini Dock Plus Series 3 (170 W). 6 The docking connector is where you attach your computer. 7 The system lock key is for locking the eject button. 8 The microphone jack, a jack - Lenovo ThinkPad T420 | (English) User Guide - Page 177
Rear view ThinkPad Port Replicator Series 3 1 The power jack is for connecting the ac power adapter. 2 The Ethernet connector is for connecting the ThinkPad Port Replicator Series 3 to an Ethernet LAN. The indicator on the connector is the same as that on the computer. Notes: • You cannot use the - Lenovo ThinkPad T420 | (English) User Guide - Page 178
power adapter. 2 The DisplayPort is for connecting a display device. 3 The digital visual interface connector is for connecting a monitor that supports Single-Link DVI. Note: The DVI connector provides a digital interface only. This connector can be used with a computer that supports DVI via docking - Lenovo ThinkPad T420 | (English) User Guide - Page 179
digital interface only. This connector can be used with a computer that supports DVI via docking only. 3 The DisplayPort is for connecting a display device. 4 The digital visual interface connector is for connecting a monitor that supports Single-Link DVI. Note: The DVI connector provides a digital - Lenovo ThinkPad T420 | (English) User Guide - Page 180
is in place and in the unlocked (horizontal) position. • For ThinkPad Mini Dock Plus Series 3 (170 W), use the 170 ac power adapter and U.S. power cord shipped with your computer. 1. To attach your computer, make sure that the system lock key is in place and in the unlocked (horizontal) position for - Lenovo ThinkPad T420 | (English) User Guide - Page 181
is aligned to the guide plate on the ThinkPad Mini Dock Series 3, the ThinkPad Mini Dock Plus Series 3, or the ThinkPad Mini Dock Plus Series 3 (170 W). 4. Insert your computer into the ThinkPad Mini Dock Series 3, the ThinkPad Mini Dock Plus Series 3, or the ThinkPad Mini Dock Plus Series 3 (170 - Lenovo ThinkPad T420 | (English) User Guide - Page 182
ac power adapters, your computer goes into battery mode first, and then shifts into ac mode. • If in either of the two preceding situations the battery of your computer is detached, or has no battery charge, your computer shuts down. Connecting an external display to the ThinkPad Mini Dock Plus - Lenovo ThinkPad T420 | (English) User Guide - Page 183
that are connected to the USB connector. Also make sure that any connection to an Ethernet is stopped. • Make sure that the battery pack is fully charged. 1. Make sure that all ejectable devices connected to the ThinkPad Port Replicator Series 3 are stopped. Chapter 7. Enhancing your computer 165 - Lenovo ThinkPad T420 | (English) User Guide - Page 184
the "system lock key" on page 156. Lenovo does not offer a mechanical lock. You will need to purchase one elsewhere. You are responsible for evaluating, selecting, and implementing any locking device and security feature. Lenovo makes no comments, judgments, or warranties about the function, quality - Lenovo ThinkPad T420 | (English) User Guide - Page 185
Attach a mechanical lock to the ThinkPad Mini Dock Plus Series 3 or the ThinkPad Mini Dock Plus Series 3 (170 W) as follows: Attach a mechanical lock to the ThinkPad Mini Dock Series 3 as follows: Chapter 7. Enhancing your computer 167 - Lenovo ThinkPad T420 | (English) User Guide - Page 186
to the ThinkPad Port Replicator Series 3 as follows: Using the system lock key The system lock key has two positions, unlocked and locked. When the key is in the locked position, the eject button of the ThinkPad Mini Dock Series 3, the ThinkPad Mini Dock Plus Series 3, or the ThinkPad Mini Dock Plus - Lenovo ThinkPad T420 | (English) User Guide - Page 187
hard disk or on the solid state drive, you may also need to install a new operating system, install new device drivers, update your UEFI BIOS, or recover preinstalled software. This information will help you handle your computer with proper care and keep it in top working shape. • "Installing a new - Lenovo ThinkPad T420 | (English) User Guide - Page 188
device drivers, and application software you need on your hard disk drive, or if you want to receive updates and the latest information about them, go to: http://www.lenovo.com/ThinkPadDrivers Installing Registry Patches for Windows 7 Install the following Registry Patches: • Registry patch enabling - Lenovo ThinkPad T420 | (English) User Guide - Page 189
the hard disk drive from a computer with a dual-core processor and install it on a computer with a single-core processor, you cannot get access to the hard disk drive. Installing Windows Vista Before you start, print these instructions. Note: Your computer supports Windows Vista with Service Pack - Lenovo ThinkPad T420 | (English) User Guide - Page 190
you need on your hard disk drive, or if you want to receive updates and the latest information about them, go to: http://www.lenovo.com/support Installing Registry Patches for Windows Vista Install the following Registry Patches: • Registry Patch enabling Device Initiated Power Management on SATA - Lenovo ThinkPad T420 | (English) User Guide - Page 191
do this, refer to the instructions in "Reinstalling preinstalled applications and device drivers" on page 108. Note: If you cannot find the Supplement files, device drivers, and application software you need on your hard disk drive, or if you want to receive updates and the latest information about - Lenovo ThinkPad T420 | (English) User Guide - Page 192
, device drivers, and application software you need on your hard disk drive, or if you want to receive updates and the latest information about them, refer to the ThinkPad Web site at: http://www.lenovo.com/ThinkPadDrivers Note: If you remove the hard disk drive from the computer with a single-core - Lenovo ThinkPad T420 | (English) User Guide - Page 193
you remove the hard disk drive from a computer with a dual-core processor and install it on a computer with a single-core processor, you cannot get access to the hard disk drive. Installing device drivers To install device drivers, go to: http://www.lenovo.com/support To install the driver for the - Lenovo ThinkPad T420 | (English) User Guide - Page 194
The Display Settings window opens. 3. Click Advanced Settings. 4. Click the Monitor tab. 5. Click Properties. (For Windows Vista, also click Continue. ) 6. Click the Driver tab. 7. Click Update Driver. 8. Select Browse my computer for driver software, and then click Let me pick from a list of device - Lenovo ThinkPad T420 | (English) User Guide - Page 195
operations" on page 105. 2. If the diskette drive is connected to the computer, remove any diskette from the diskette drive, and then turn off the computer. 3. Turn on the computer. When the logo screen is displayed, press the F1 key. The ThinkPad Setup opens. If you have set a supervisor password - Lenovo ThinkPad T420 | (English) User Guide - Page 196
UEFI BIOS update. • Memory Protection: Specify the settings for the Data Execution Prevention feature. • Virtualization: Enable or disable the settings for Intel Virtualization Technology and Intel VT-d Feature. • I/O Port Access: Enable or disable the access to individual I/O ports. 178 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 197
submenu is displayed: • Hardware Password Manager • Supervisor Password • Lock UEFI BIOS Settings • Set Minimum Length • Password at unattended boot • Password at restart • Power-On Password • Hard Disk x Password Notes: • Hard Disk 1 means the hard disk drive built into your computer. • Hard Disk - Lenovo ThinkPad T420 | (English) User Guide - Page 198
so that the system starts up from a different drive, do the following: 1. Turn off the computer. 2. Turn on the computer; then, while the "To interrupt normal startup, press the blue ThinkVantage button" message is displayed at the lower-left of the screen, press F12. 3. Select the device you want - Lenovo ThinkPad T420 | (English) User Guide - Page 199
menu, and the Startup menu of the ThinkPad Setup program. Note: Some items are displayed on the menu only if the computer supports the corresponding features. Notes: • Enabled means that the function is configured. • Disabled means that the function is not configured. • Default values are in - Lenovo ThinkPad T420 | (English) User Guide - Page 200
LAN function does not work when a hard disk password is set. Load the Ethernet LAN Option ROM to enable startup from an integrated network device. Enable or disable boot support for USB diskette, USB memory key, and USB optical drive. If you select "Enabled", the external USB devices can be charged - Lenovo ThinkPad T420 | (English) User Guide - Page 201
, and the Ctrl key works as the Fn key. Note: Even when "Enabled" is selected, you need to press the Fn key to return the computer from sleep mode to normal operation. If you select "Enabled", you can press the Fn key to keep it in a pressed condition, then press the desired function key. The action - Lenovo ThinkPad T420 | (English) User Guide - Page 202
is enabled on demand. Note: NVIDIA Optimus mode should only be selected if you are using a Windows 7 model. System BIOS automatically switches Graphics device setting to NVIDIA Optimus mode if the OS supports the feature, and to Discrete Graphics if the OS does not support it. 184 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 203
• Enabled • Disabled • Enabled • Disabled • Enabled Note: Each scheme affects fan sound, temperature, and performance. Set the speed of optical drive to the desired performance. Enable or disable the power saving feature that stop the microprocessor clock automatically when there are no system - Lenovo ThinkPad T420 | (English) User Guide - Page 204
a power-on, hard disk, or supervisor password. Different beeps will be sounded when the entered password matches or does not match the configured password. Enable or disable keyboard beep when unmanageable key combinations are pressed. Select SATA controller operation mode. If your system supports - Lenovo ThinkPad T420 | (English) User Guide - Page 205
If you select "Enabled", Intel AMT (Active Management Technology) is configured and additional setup items are provided in MEBx (Management Engine BIOS Extension) Setup. Note: You can enter MEBx Setup menu by pressing Ctrl-P key combination in Startup Interrupt Menu. To display the Startup Interrupt - Lenovo ThinkPad T420 | (English) User Guide - Page 206
settings to the factory state (ex. Power-on security, LEDs, etc.) As a result, any power-on security features previously enabled will not be able to work until they are re-enabled in the fingerprint software. If you select "Active", Security Chip is functional. If you select "Inactive", Security - Lenovo ThinkPad T420 | (English) User Guide - Page 207
UEFI BIOS. Enable your computer's UEFI BIOS to be updated (flashed) over an active network connection. Some computer viruses and worms cause memory buffers to overflow by running code where only data is allowed. If the Data Execution Prevention feature can be used with your operating system, then - Lenovo ThinkPad T420 | (English) User Guide - Page 208
(HDD/Optical) eSATA Port Memory Card Slot • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled Integrated Camera Microphone • Disabled • Enabled • Disabled • Enabled Anti-Theft - Lenovo ThinkPad T420 | (English) User Guide - Page 209
built into your computer. UEFI BIOS translates the instructions from other software layers. Your computer system board has a module called electrically erasable programmable read-only memory (EEPROM, also referred to as flash memory). You can update UEFI BIOS and the Configuration/ThinkPad Chapter - Lenovo ThinkPad T420 | (English) User Guide - Page 210
software, hardware, or a device driver, you may be informed that you need to update your UEFI BIOS in order for the new addition to work properly. To update your UEFI BIOS, go to: http://www.lenovo.com/ThinkPadDrivers, and follow the instructions on the screen. Using system management This section - Lenovo ThinkPad T420 | (English) User Guide - Page 211
management features To enable the network administrator to control your computer remotely, you must configure the network interface by setting the system-management features in the ThinkPad Setup. That utility contains the following functions: • Wake on LAN • Network boot sequence • Flash update - Lenovo ThinkPad T420 | (English) User Guide - Page 212
be installed in the remote administrator's computer. To enable or disable the Flash update from the network setting, do the following: 1. On the ThinkPad Setup menu, select Security. The Security submenu appears. 2. Select UEFI BIOS Update Option. The UEFI BIOS Update Option submenu appears. 3. For - Lenovo ThinkPad T420 | (English) User Guide - Page 213
recovery on your computer to return the preload onto the machine, the following tips might help along the way: • Remove all external devices such as the printer, keyboard, etc. • Make sure that your battery is charged and that you have the ac power connected. • Boot into the ThinkPad Setup and load - Lenovo ThinkPad T420 | (English) User Guide - Page 214
the Lenovo Support Web site. Update packages can contain applications, device drivers, UEFI BIOS flashes, or software updates. When the System Update program connects to the Lenovo Support Web site, the System Update program automatically recognizes the machine type and model of your computer, the - Lenovo ThinkPad T420 | (English) User Guide - Page 215
the hard disk drive, solid state drive, or optical drive, follow the instructions shipped with your hardware, and apply pressure only where needed on the device. • Turn off your computer if you are replacing the hard disk drive or solid state drive. • When replacing the primary hard disk drive or - Lenovo ThinkPad T420 | (English) User Guide - Page 216
forget a supervisor or hard disk password, Lenovo will not reset it, and you might have to replace your system board, or hard disk drive or solid state drive. Care for the fingerprint reader The following actions could damage the fingerprint reader or cause it not to work properly: • Scratching the - Lenovo ThinkPad T420 | (English) User Guide - Page 217
To remove any crumbs or dust from beneath the keys, you can use a camera blower with a brush or cool air from a hair dryer. Note: Avoid spraying cleaner directly onto the display or the keyboard. Cleaning your computer display 1. Gently wipe the display with a dry, soft lint-free cloth. If you see - Lenovo ThinkPad T420 | (English) User Guide - Page 218
200 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 219
your Windows 7 model is not preinstalled with the program, you can download it from http://www.lenovo.com/diagnose. The Lenovo Solution Center program enables you to troubleshoot and resolve computer problems. It combines diagnostic tests, system information collection, security status, and support - Lenovo ThinkPad T420 | (English) User Guide - Page 220
but does not start when the battery is attached, call the Customer Support Center for support. 3. While the machine is off, remove all sources of power from the machine (battery and ac power). Remove all external devices that are attached to your computer (keyboard, mouse, printer, scanner, etc - Lenovo ThinkPad T420 | (English) User Guide - Page 221
• Message: 0176: System Security - The System has been tampered with. Solution: This message is displayed if you remove the Security Chip and reinstall it, or install a new one. To clear the error, enter the ThinkPad Setup. If this does not solve the problem, have the computer serviced. • Message - Lenovo ThinkPad T420 | (English) User Guide - Page 222
. Have the computer serviced. • Message: 0190: Critical low-battery error Solution: The computer turned off, because the battery is low. Connect the ac power adapter to the computer and charge the battery, or replace the battery with a fully charged one. • Message: 0191: System Security - Invalid - Lenovo ThinkPad T420 | (English) User Guide - Page 223
fan has failed. Have the computer serviced. Errors without messages • Problem: My screen keeps blanking when I do not want it to. Solution: You can disable any system timers, such as the LCD turn-off timer or the blank timer 1. Start Power Manager. 2. Click the Power plan tab (in Windows XP, Power - Lenovo ThinkPad T420 | (English) User Guide - Page 224
is connected to the computer and the power cord is plugged into a working electrical outlet. - The computer is turned on. (Turn the power switch on again for confirmation.) If a power-on password is set: - Press any key to display the prompt for the power-on password. If the brightness level of the - Lenovo ThinkPad T420 | (English) User Guide - Page 225
settings by doing the following: For Windows 7 and Windows Vista: 1. Click Start. 2. Click Control Panel ➙ Hardware and Sound. 3. Click Phone and Modem Options. 4. Click the Modems tab. The name of the modem installed in your computer is highlighted. Chapter 10. Troubleshooting computer problems 207 - Lenovo ThinkPad T420 | (English) User Guide - Page 226
. 19. Click OK to close the window. For Windows XP: 1. Click Start. 2. Click Control Panel ➙ Printers and Other Hardware. 3. Click Phone and Modem Options. 4. Click the Modems tab. The name of the modem installed in your computer is highlighted. 5. Click Properties. 6. Click the Modem tab. 7. Clear - Lenovo ThinkPad T420 | (English) User Guide - Page 227
click the ? mark. The MoH function has been tested and shown to work in the United States and Canada. It may not work correctly in other countries. Note: If your computer is a Windows 7 model, click Show hidden icons in the task bar. The MoH icon is displayed. • Problem: Connecting to an ISP takes - Lenovo ThinkPad T420 | (English) User Guide - Page 228
driver or the driver is not enabled. To update the driver, right-click the highlighted adapter. 5. Click Update Driver Software, and then follow the instructions on the screen. For Windows XP: 1. Click Start, and then click Control Panel. 2. Click Performance and Maintenance, and then click System - Lenovo ThinkPad T420 | (English) User Guide - Page 229
the address book of any other Bluetooth-enabled device. Solution: Windows 7 and Windows Vista send PIM items in XML format, but most Bluetooth-enabled devices handle PIM items in vCard format. If another Bluetooth-enabled device can receive a file Chapter 10. Troubleshooting computer problems 211 - Lenovo ThinkPad T420 | (English) User Guide - Page 230
, turn the Bluetooth power off and then on again, or restart your computer. Then search for the device again. Note: If you are using the ThinkPad Bluetooth with Enhanced Data Rate Software, refer to the following instructions. • Problem: You cannot connect to any Bluetooth-enabled device. Solution - Lenovo ThinkPad T420 | (English) User Guide - Page 231
close the Bluetooth Service Selection window. • Problem: ThinkPad Bluetooth with Enhanced Data Rate Software does not function. Solution: Do the following: 1. Turn on Bluetooth by pressing Fn+F5. 2. Click Start ➙ Control Panel. 3. Click the Performance and Maintenance icon. 4. Click the System icon - Lenovo ThinkPad T420 | (English) User Guide - Page 232
the device listing, the Microsoft Bluetooth software is installed on your computer. If you want to use ThinkPad Bluetooth with Enhanced Data Rate Software, you have to install it and then replace the Bluetooth driver. For more information, see "BluetoothUsing Bluetooth" on page 44. • Problem: While - Lenovo ThinkPad T420 | (English) User Guide - Page 233
➙ Control Panel. 2. Click Printers and Other Hardware, and then click Keyboard. 3. Select the Hardware tab. In the In the Device Properties, make sure that the Device Status is This device is working properly. If keys on the keyboard still do not work, have the computer serviced. • Problem: A number - Lenovo ThinkPad T420 | (English) User Guide - Page 234
type the password or provide confirmation. Check the "Device status" box and make sure the device is working properly. If not, click the Troubleshoot button. For Windows Vista: 1. Right-click on the desktop, and click Personalize. 2. Click Display Settings and check whether the screen resolution and - Lenovo ThinkPad T420 | (English) User Guide - Page 235
the device is working properly. If not, click the Troubleshoot button. • Problem: Incorrect characters appear on the screen. Solution: Did you install the operating system or application program correctly? If they are installed and configured correctly, have the computer serviced. • Problem: The - Lenovo ThinkPad T420 | (English) User Guide - Page 236
that has been installed on your computer. 6. Click OK. If the information is incorrect, reinstall the device driver. See below for more information. For Windows XP: 1. Right-click on the desktop, and click Properties to open the Display Properties window. 2. Click the Settings tab. 3. Click Advanced - Lenovo ThinkPad T420 | (English) User Guide - Page 237
from a list of device drivers on my computer. 13. Clear the Show compatible hardware check box. 14. Select Manufacturer and Model for your monitor. 15. After updating the driver, click Close. 16. Set Resolution and Colors in the Display Settings window. 17. Click OK. For Windows XP: 1. Connect the - Lenovo ThinkPad T420 | (English) User Guide - Page 238
updating the driver, click OK to close the Properties window. 18. Set Colors and Screen area in the Display Properties window. 19. Click OK. • Problem external monitor and the computer. 3. Right-click on the desktop, and click Screen resolution. Note: If your computer cannot detect the external - Lenovo ThinkPad T420 | (English) User Guide - Page 239
correct procedure in installing the operating system or application program? If you did, have the external monitor serviced. • Problem: The Extend desktop function does not work. Solution: Enable the Extend desktop function by doing the following: For Windows 7: 1. Connect the external monitor to - Lenovo ThinkPad T420 | (English) User Guide - Page 240
, change the resolution and the color depth to lower settings for the primary display. To launch the Display Properties window, refer to the "Solution" for "The Extend desktop function does not work" above. • Problem: The screen position on the external monitor is incorrect when that monitor is - Lenovo ThinkPad T420 | (English) User Guide - Page 241
. 4. Select Conexant HD Audio input in the Mixer device list. 5. Click OK. 6. Click Options, and then click Advanced Controls. 7. Find the Microphone volume control, and then click Advanced. 8. Select the Microphone boost check box. 9. Click Close. Chapter 10. Troubleshooting computer problems 223 - Lenovo ThinkPad T420 | (English) User Guide - Page 242
Master volume control and select Mute speakers (in Windows Vista and Windows XP, Mute). • Problem: Sound does not come from a headphone or a speaker, or your computer cannot record sounds when the SmartAudio is set to MULTI-STREAM mode (Windows Vista). Solution: To switch from one device to another - Lenovo ThinkPad T420 | (English) User Guide - Page 243
This section tells what to do if you have a battery and power problem. This section includes five topics: Battery, ac power adapter, Power, Power button, Startup and Sleep (standby) and hibernation. Check these topics to find the related information. Chapter 10. Troubleshooting computer problems 225 - Lenovo ThinkPad T420 | (English) User Guide - Page 244
cools, reinstall it and recharge the battery. If it still cannot be charged, have it serviced. AC power adapter problems • Problem: The ac power adapter is connected to the computer and the working electrical outlet, but the power adapter (power plug) icon is not displayed in the task bar. Also the - Lenovo ThinkPad T420 | (English) User Guide - Page 245
system power with minimal devices attached. a. Disconnect the ac power adapter and all cables from the computer. b. Close the computer display, and turn the computer over. c. Remove the battery. Refer to "Replacing the battery" on page 111. d. Remove the memory (SO-DIMM). Refer to "Replacing memory - Lenovo ThinkPad T420 | (English) User Guide - Page 246
low-battery error" message appears, and the computer immediately turns off. Solution: The battery power is getting low. Connect the ac power adapter to the computer and plug it into an electrical outlet, or replace the battery with a charged one. • Problem: The computer display remains blank - Lenovo ThinkPad T420 | (English) User Guide - Page 247
to install ThinkPad PM driver. • Problem: The battery discharges slightly while the computer is in hibernation mode. Solution: If the wakeup function is enabled, the computer consumes small amount of power. This is not a defect. For details, refer to "Power-saving modes" on page 39. Drives and other - Lenovo ThinkPad T420 | (English) User Guide - Page 248
for writing to CD." in Windows XP. Solution: Before you write to a DVD-RAM disc, enable the writing function as follows: 1. Click Start ➙ My Computer. 2. Right-click DVD-RAM drive. A menu for the drive is displayed. The DVD-RAM drive is displayed in the Devices with Removable Storage category - Lenovo ThinkPad T420 | (English) User Guide - Page 249
does not run correctly, contact your place of purchase or a service representative for help. Ports and connectors This section includes the most common ports and connectors problems: Universal Serial Bus, and docking station or port replication. Chapter 10. Troubleshooting computer problems 231 - Lenovo ThinkPad T420 | (English) User Guide - Page 250
, and click System. 3. Click the Hardware tab, and click the Device Manager button. Refer to "Diagnosing problems" on page 201 and run Lenovo ThinkVantage Toolbox for a diagnostic test of the USB connector. A docking station or port replicator problem • Problem: The computer does not start - Lenovo ThinkPad T420 | (English) User Guide - Page 251
Chapter 11. Getting support There is more to owning a ThinkPad notebook than having a powerful, portable computer. This chapter offers information about when to communicate with Lenovo and how best to do it. • "Before you contact Lenovo" on page 233 • "Getting help and service" on page 234 • " - Lenovo ThinkPad T420 | (English) User Guide - Page 252
on the Lenovo Support Web site at: http://support.lenovo.com This Web site is updated with the latest support information such as the following: • Drivers and software • Diagnostic solutions • Product and service warranty • Product and parts details • User guides and manuals • Knowledge base and - Lenovo ThinkPad T420 | (English) User Guide - Page 253
Warranty Guide came with your computer. If possible, be near your computer when you make your call in case the technical assistance representative needs to help you resolve a computer problem. Please ensure that you have downloaded the most current drivers and system updates, run diagnostics, and - Lenovo ThinkPad T420 | (English) User Guide - Page 254
236 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 255
that is based on Direct Sequence Spread Spectrum (DSSS), Complementary Code Keying (CCK), Bluetooth product that is compliant to Bluetooth Specification 2.1+EDR as defined by the Bluetooth SIG. Following profiles are supported by Bluetooth device: • Generic Access • Service Discovery • Serial Port - Lenovo ThinkPad T420 | (English) User Guide - Page 256
to use integrated wireless cards prior to turning on the computer. Location of the UltraConnect wireless antennas ThinkPad models feature an integrated diversity antenna system built into the display for optimal reception, enabling wireless communication wherever you are. There are three types of - Lenovo ThinkPad T420 | (English) User Guide - Page 257
antenna (Auxiliary) The auxiliary antenna connected to the wireless LAN or WiMAX feature is located at the top right portion of the computer display. 5 Wireless WAN antenna (Auxiliary) If your computer comes with a wireless WAN feature, the auxiliary antenna is located at the top right corner of the - Lenovo ThinkPad T420 | (English) User Guide - Page 258
to: http://www.lenovo.com/support 2. Click the Support & downloads section, a new page is displayed. 3. In the right pane, type your computer number in the Enter a product number filed, and click Go. 4. You can then find the ThinkPad Regulatory Notice in the displayed search results. 240 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 259
ThinkPad T420/T420i, machine types 4237, 4238, 4178, 4180, 4236, 4177, 4179. Federal Communications Commission Declaration of Conformity This equipment has been tested and found to comply with the limits for a Class B digital device the instructions, may or service representative for help. Lenovo is - Lenovo ThinkPad T420 | (English) User Guide - Page 260
licensed communication devices. German von der Lenovo empfohlene Kabel angeschlossen werden. Lenovo übernimmt Lenovo verändert bzw. wenn Erweiterungskomponenten von Fremdherstellern ohne Empfehlung der Lenovo rung nach Paragraf 5 des EMVG ist die Lenovo (Deutschland) GmbH, Gropiusplatz 10, D-70563 - Lenovo ThinkPad T420 | (English) User Guide - Page 261
regulatory information, refer to the ThinkPad Regulatory Notice shipped with your computer. If your computer is shipped without the ThinkPad Regulatory Notice, you can find it on the Web site at http://www.lenovo.com/support. For details, refer to the instructions on "Locating wireless regulatory - Lenovo ThinkPad T420 | (English) User Guide - Page 262
244 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 263
collective systems for Utilization of Resources, the collecting and recycling of home-used computers and monitors by the manufacturer was begun on October 1, 2003. This service is provided free of charge for home-used computers sold after October 1, 2003. For details, go to: http://www.lenovo - Lenovo ThinkPad T420 | (English) User Guide - Page 264
battery is installed on the system board of your Lenovo computer to provide power to the computer clock while the computer is off or disconnected from the main power source. If you want to replace it with a new one, contact your place of purchase or ask for a repair service provided by Lenovo - Lenovo ThinkPad T420 | (English) User Guide - Page 265
and accumulators on the environment and human health due to the potential presence of hazardous substances. For proper collection and treatment, go to: http://www.lenovo.com/lenovo/environment Battery recycling information for United States and Canada Appendix B. WEEE and recycling statements 247 - Lenovo ThinkPad T420 | (English) User Guide - Page 266
248 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 267
not apply to you. This information could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. Lenovo may make improvements and/or changes in the product(s) and/or the - Lenovo ThinkPad T420 | (English) User Guide - Page 268
of Lenovo in the United States, other countries, or both: Lenovo Access Connections Active Protection System Rescue and Recovery ThinkLight ThinkPad ThinkVantage from Research In Motion Limited. Other company, product, and service names may be trademarks or service marks of others. 250 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 269
Appendix D. Restriction of Hazardous Substances Directive (RoHS) China RoHS Turkish RoHS The Lenovo product meets the requirements of the Republic of Turkey Directive on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment ( - Lenovo ThinkPad T420 | (English) User Guide - Page 270
India RoHS RoHS compliant as per E-Waste (Management & Handling) Rules, 2011. 252 User Guide - Lenovo ThinkPad T420 | (English) User Guide - Page 271
- Lenovo ThinkPad T420 | (English) User Guide - Page 272
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User Guide
ThinkPad T420 and T420i