(English) Power Manager Deployment Guide
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...'s ability to below 100%. For example, the IT administrator can configure settings for the General Setting policies, Power Plan (Scheme) Deployments policies, Global Power Settings policies, and Battery Maintenance policy. 2 Power ManagerDeployment Guide (in the notification area. • Maximize battery life span If you primarily use battery... by letting the battery discharge to a lower percentage before it is recommended to store batteries with an attached ac power adapter and only infrequently use the computer with less charge rather than full charge. • Remotely configure...
...'s ability to below 100%. For example, the IT administrator can configure settings for the General Setting policies, Power Plan (Scheme) Deployments policies, Global Power Settings policies, and Battery Maintenance policy. 2 Power ManagerDeployment Guide (in the notification area. • Maximize battery life span If you primarily use battery... by letting the battery discharge to a lower percentage before it is recommended to store batteries with an attached ac power adapter and only infrequently use the computer with less charge rather than full charge. • Remotely configure...
(English) Power Manager Deployment Guide
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... name. System Performance (AC) Possible maximum speeds include: • Highest • Adaptive • Low • Lowest Specifies the system performance type. Under Computer Configuration, click Administrative Templates ➙ Classic Administrative Templates ➙ Lenovo ThinkVantage Components ➙ Power Manager for Vista/7 ➙ Power Plan (Scheme) Deployments. • For Windows Vista or Windows 7 client computers (ADMX...
... name. System Performance (AC) Possible maximum speeds include: • Highest • Adaptive • Low • Lowest Specifies the system performance type. Under Computer Configuration, click Administrative Templates ➙ Classic Administrative Templates ➙ Lenovo ThinkVantage Components ➙ Power Manager for Vista/7 ➙ Power Plan (Scheme) Deployments. • For Windows Vista or Windows 7 client computers (ADMX...
(English) Power Manager Deployment Guide
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... the computer will be prompted for the administrator account. Under Computer Configuration, click Administrative Templates ➙ Lenovo ThinkVantage Components ➙ Power Manager ➙ Global Power Setting. • For Windows Vista or Windows 7 client computers (ADM file) Under Computer Configuration, ... the computer resumes operation after being in hibernation mode. • When the ac power adapter is disconnected from sleep. Require password on Windows XP client computers. 30 Power ManagerDeployment Guide If you enable this policy setting, the user will sound a beep...
... the computer will be prompted for the administrator account. Under Computer Configuration, click Administrative Templates ➙ Lenovo ThinkVantage Components ➙ Power Manager ➙ Global Power Setting. • For Windows Vista or Windows 7 client computers (ADM file) Under Computer Configuration, ... the computer resumes operation after being in hibernation mode. • When the ac power adapter is disconnected from sleep. Require password on Windows XP client computers. 30 Power ManagerDeployment Guide If you enable this policy setting, the user will sound a beep...
Hardware Maintenance Manual
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...mode 45 Hibernation mode 45 Symptom-to remove the power-on the underside of the system unit 62 Retaining the UUID 63 Reading or writing the ECA information . . . 63 Chapter 8. Removing and replacing a FRU 65 Before servicing ThinkPad T420 and T420i . . . 66 1010 Battery pack... 81 1100 Backup battery 83 1110 PCI Express Mini Card for DOS diagnostics program 29 System supporting the Lenovo diagnostics programs 33 Power system checkout 37 Checking the ac power adapter 37 Checking operational charging 37 Checking the battery pack 38 Checking the backup battery 38 Chapter 4. Related ...
...mode 45 Hibernation mode 45 Symptom-to remove the power-on the underside of the system unit 62 Retaining the UUID 63 Reading or writing the ECA information . . . 63 Chapter 8. Removing and replacing a FRU 65 Before servicing ThinkPad T420 and T420i . . . 66 1010 Battery pack... 81 1100 Backup battery 83 1110 PCI Express Mini Card for DOS diagnostics program 29 System supporting the Lenovo diagnostics programs 33 Power system checkout 37 Checking the ac power adapter 37 Checking operational charging 37 Checking the battery pack 38 Checking the backup battery 38 Chapter 4. Related ...
Hardware Maintenance Manual
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... 155 Keyboard 160 Miscellaneous parts 162 Information about ac power adapters 164 Power cords 165 Recovery discs 166 Common service tools 173 Appendix A. Locations 129 Front view 129 Rear view 131 Bottom view 132 Chapter 10. Notices 175 Electronic emissions notices 176 Trademarks 177 ii ThinkPad T420 and T420i Hardware Maintenance Manual 1150 Speaker assembly...
... 155 Keyboard 160 Miscellaneous parts 162 Information about ac power adapters 164 Power cords 165 Recovery discs 166 Common service tools 173 Appendix A. Locations 129 Front view 129 Rear view 131 Bottom view 132 Chapter 10. Notices 175 Electronic emissions notices 176 Trademarks 177 ii ThinkPad T420 and T420i Hardware Maintenance Manual 1150 Speaker assembly...
Hardware Maintenance Manual
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What to do first When you do return a FRU, you attach to excessive force, or dropped. 28 ThinkPad T420 and T420i Hardware Maintenance Manual Date of some symptoms that have been subjected to it may be responsible for repair costs if the computer damage ... device • Forgotten computer password (making the computer unusable) • Sticky keys caused by spilling a liquid onto the keyboard • Use of an incorrect ac power adapter on laptop products The following information in which the machine failed 4. Machine type, model number, and serial number 9.
What to do first When you do return a FRU, you attach to excessive force, or dropped. 28 ThinkPad T420 and T420i Hardware Maintenance Manual Date of some symptoms that have been subjected to it may be responsible for repair costs if the computer damage ... device • Forgotten computer password (making the computer unusable) • Sticky keys caused by spilling a liquid onto the keyboard • Use of an incorrect ac power adapter on laptop products The following information in which the machine failed 4. Machine type, model number, and serial number 9.
Hardware Maintenance Manual
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Power Diagnostics ➙ ThinkPad Devices ➙ ac power adapter, Battery 1 (Battery2) LCD unit 1. In this test. Diagnostics ➙ Systemboard ➙ Keyboard 2. Interactive Tests ➙ Keyboard Hard disk drive or solid state Enter the ThinkPad Setup program and change Serial ATA (...with the following : • Interactive Tests ➙ Mouse System supporting the Lenovo diagnostics programs The section provides information about ThinkPad computers that support the Lenovo diagnostics programs. Some descriptions might not apply to Compatibility, and run Diagnostics ...
Power Diagnostics ➙ ThinkPad Devices ➙ ac power adapter, Battery 1 (Battery2) LCD unit 1. In this test. Diagnostics ➙ Systemboard ➙ Keyboard 2. Interactive Tests ➙ Keyboard Hard disk drive or solid state Enter the ThinkPad Setup program and change Serial ATA (...with the following : • Interactive Tests ➙ Mouse System supporting the Lenovo diagnostics programs The section provides information about ThinkPad computers that support the Lenovo diagnostics programs. Some descriptions might not apply to Compatibility, and run Diagnostics ...
Hardware Maintenance Manual
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... docking station or the port replicator is supplied when you suspect a power problem, see the appropriate one you turn on the computer. To check the ac power adapter, do the following : 1. Unplug the ac power adapter cable from the ac power adapter does not always indicate a defect. See the following figure: 3... 2 1 (20V) Pin Voltage (V dc) 1 +20 2 0 3 Ground Note: Output voltage of pin no.2 of the ac power adapter may different from the one of the ac power adapter for DOS, go to "FRU tests" on page 37. Note: Noise from the computer. 2. If you turn on the computer...
... docking station or the port replicator is supplied when you suspect a power problem, see the appropriate one you turn on the computer. To check the ac power adapter, do the following : 1. Unplug the ac power adapter cable from the ac power adapter does not always indicate a defect. See the following figure: 3... 2 1 (20V) Pin Voltage (V dc) 1 +20 2 0 3 Ground Note: Output voltage of pin no.2 of the ac power adapter may different from the one of the ac power adapter for DOS, go to "FRU tests" on page 37. Note: Noise from the computer. 2. If you turn on the computer...
Hardware Maintenance Manual
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...not start until the Power Manager Battery Gauge shows that less than +11.0 V dc, measure the resistance between battery terminals 1 (+) and 7 (-). Remove the battery pack and measure the voltage between battery terminals 5 and 7. See the following figure. 38 ThinkPad T420 and T420i Hardware Maintenance...not be 4 to room temperature. After it cools down . 3. Power off the computer. 2. Remove the backup battery (see "1010 Battery pack" on , replace the battery pack. Power off the computer, and unplug the ac power adapter from it . If the voltage is still less than +11.0 V...
...not start until the Power Manager Battery Gauge shows that less than +11.0 V dc, measure the resistance between battery terminals 1 (+) and 7 (-). Remove the battery pack and measure the voltage between battery terminals 5 and 7. See the following figure. 38 ThinkPad T420 and T420i Hardware Maintenance...not be 4 to room temperature. After it cools down . 3. Power off the computer. 2. Remove the backup battery (see "1010 Battery pack" on , replace the battery pack. Power off the computer, and unplug the ac power adapter from it . If the voltage is still less than +11.0 V...
Hardware Maintenance Manual
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... reader is attached to the computer. 3. Reseat the hard disk drive. 2. System board. 1. System board. 48 ThinkPad T420 and T420i Hardware Maintenance Manual Default configuration used. 0271 Real-time clock error. Replace the backup battery and run the...time settings. 1802 Unauthorized network card is plugged in sequence 1. System board. 1. System board. 1. Run the ThinkPad Setup program, and then save current setting by connecting the ac power adapter. 2. Undock docking station or port replicator if it is attached. Main hard disk drive. 3. Reseat the hard...
... reader is attached to the computer. 3. Reseat the hard disk drive. 2. System board. 1. System board. 48 ThinkPad T420 and T420i Hardware Maintenance Manual Default configuration used. 0271 Real-time clock error. Replace the backup battery and run the...time settings. 1802 Unauthorized network card is plugged in sequence 1. System board. 1. System board. 1. Run the ThinkPad Setup program, and then save current setting by connecting the ac power adapter. 2. Undock docking station or port replicator if it is attached. Main hard disk drive. 3. Reseat the hard...
Hardware Maintenance Manual
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Blinking green: The computer is entering sleep (standby) mode or hibernation mode, or is fully charged or detached. Table 7. The battery status indicator is off: The battery pack of the computer is resuming normal operation. 56 ThinkPad T420 and T420i Hardware Maintenance Manual Green: The computer is attached to the computer. Status indicators (continued) Indicator 11 Sleep (standby for Windows XP) status Meaning The ac power adapter is in sleep (standby) mode.
Blinking green: The computer is entering sleep (standby) mode or hibernation mode, or is fully charged or detached. Table 7. The battery status indicator is off: The battery pack of the computer is resuming normal operation. 56 ThinkPad T420 and T420i Hardware Maintenance Manual Green: The computer is attached to the computer. Status indicators (continued) Indicator 11 Sleep (standby for Windows XP) status Meaning The ac power adapter is in sleep (standby) mode.
Hardware Maintenance Manual
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... display (LCD) Notes: This function is loaded after sleep (standby), hibernation, reboot, or detaching or attaching an ac power adapter. Reserved. The computer display becomes brighter. Enable the Full Screen Magnifier function. 58 ThinkPad T420 and T420i Hardware Maintenance Manual Fn key combinations (continued) Key combination Description Note: To switch between the computer display...
... display (LCD) Notes: This function is loaded after sleep (standby), hibernation, reboot, or detaching or attaching an ac power adapter. Reserved. The computer display becomes brighter. Enable the Full Screen Magnifier function. 58 ThinkPad T420 and T420i Hardware Maintenance Manual Fn key combinations (continued) Key combination Description Note: To switch between the computer display...
Hardware Maintenance Manual
Page 139
...that the part is identified by no more than two screws. Examples of CRUs include the ac power adapter, power cord, battery, and hard disk drive. You may request that Lenovo installs an Optional-service CRU according to you. See your responsibility; External CRU statement to return ...two screws. ThinkPad Notebooks contain the following lists of the service parts. • "Overall" on page 134 • "LCD FRUs" on page 155 • "Keyboard" on page 160 • "Miscellaneous parts" on page 162 • "Information about ac power adapters" on page 164 • "Power cords" on ...
...that the part is identified by no more than two screws. Examples of CRUs include the ac power adapter, power cord, battery, and hard disk drive. You may request that Lenovo installs an Optional-service CRU according to you. See your responsibility; External CRU statement to return ...two screws. ThinkPad Notebooks contain the following lists of the service parts. • "Overall" on page 134 • "LCD FRUs" on page 155 • "Keyboard" on page 160 • "Miscellaneous parts" on page 162 • "Information about ac power adapters" on page 164 • "Power cords" on ...
Hardware Maintenance Manual
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Thermal grease 91P8835 - ac power adapter (see "Keyboard" on page 164.) CRU ID N * N 154 ThinkPad T420 and T420i Hardware Maintenance Manual Table 9. Parts list-Overall (continued) No. FRU (Overall) FRU no. PBx, PCx, PDx, PEx, PFx, PGx, PHx, PJx, PKx, PLx, ..., Q8x, Q9x, QAx, QBx, QCx, QDx, QEx, QFx, QGx, QHx, QJx, QKx, QLx • 4237-CTO • 4238-CTO 29 Keyboard (see "Information about ac power adapters" on page 160.) 30 TrackPoint caps 91P9642 -
Thermal grease 91P8835 - ac power adapter (see "Keyboard" on page 164.) CRU ID N * N 154 ThinkPad T420 and T420i Hardware Maintenance Manual Table 9. Parts list-Overall (continued) No. FRU (Overall) FRU no. PBx, PCx, PDx, PEx, PFx, PGx, PHx, PJx, PKx, PLx, ..., Q8x, Q9x, QAx, QBx, QCx, QDx, QEx, QFx, QGx, QHx, QJx, QKx, QLx • 4237-CTO • 4238-CTO 29 Keyboard (see "Information about ac power adapters" on page 160.) 30 TrackPoint caps 91P9642 -
Hardware Maintenance Manual
Page 170
... Table 14. Parts list-3-pin ac power adapters FRU 3-pin (65 W, 20 V) adapter (models CTO, xxA, xxB, xxG, xxH, xxK, xxM, xxQ, xxT, xxV) 3-pin (65 W, 20 V) adapter (models CTO, xxA, xxB, xxG, xxH, xxK, xxM, xxQ, xxT, xxV) 3-pin (65 W, 20 V) adapter (models CTO, xxA, xxB, xxG,... 20 V) adapter (models CTO, xxA, xxB, xxG, xxH, xxK, xxM, xxQ, xxT, xxV) FRU no. 42T5282 42T4423 42T4419 42T4427 42T4431 42T4435 42T4439 CRU ID * FRU no. 42T5283 42T4421 42T4417 42T4425 42T4429 42T4433 45N0068 CRU ID * 164 ThinkPad T420 and T420i Hardware Maintenance Manual Information about ac power adapters Table 13...
... Table 14. Parts list-3-pin ac power adapters FRU 3-pin (65 W, 20 V) adapter (models CTO, xxA, xxB, xxG, xxH, xxK, xxM, xxQ, xxT, xxV) 3-pin (65 W, 20 V) adapter (models CTO, xxA, xxB, xxG, xxH, xxK, xxM, xxQ, xxT, xxV) 3-pin (65 W, 20 V) adapter (models CTO, xxA, xxB, xxG,... 20 V) adapter (models CTO, xxA, xxB, xxG, xxH, xxK, xxM, xxQ, xxT, xxV) FRU no. 42T5282 42T4423 42T4419 42T4427 42T4431 42T4435 42T4439 CRU ID * FRU no. 42T5283 42T4421 42T4417 42T4425 42T4429 42T4433 45N0068 CRU ID * 164 ThinkPad T420 and T420i Hardware Maintenance Manual Information about ac power adapters Table 13...
(English) User Guide
Page 3
... Magnifier function 85 Traveling with your battery power 39 Power-saving modes 39 Handling the battery 41 Connecting to the system tray . 37 Power management 38 Checking battery status 38 Using the ac power adapter 38 Charging the battery 39 Maximizing battery ...life 39 Managing your computer 86 Travel tips 86 Travel accessories 86 i 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...
... Magnifier function 85 Traveling with your battery power 39 Power-saving modes 39 Handling the battery 41 Connecting to the system tray . 37 Power management 38 Checking battery status 38 Using the ac power adapter 38 Charging the battery 39 Maximizing battery ...life 39 Managing your computer 86 Travel tips 86 Travel accessories 86 i 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...
(English) User Guide
Page 7
... force to cables may become hot. Extended contact with your body, even through clothing, may cause a skin burn. • Do not place the ac power adapter in contact with the operation of charge in contact with a hot section of the computer for any other electronic device, so that your computer generates...the battery is connected to fail. When your computer is turned on the amount of system activity and the level of your computer. © Copyright Lenovo 2011 v Read this first Be sure to follow the important tips given here to continue to get the most use it to warm your body....
... force to cables may become hot. Extended contact with your body, even through clothing, may cause a skin burn. • Do not place the ac power adapter in contact with the operation of charge in contact with a hot section of the computer for any other electronic device, so that your computer generates...the battery is connected to fail. When your computer is turned on the amount of system activity and the level of your computer. © Copyright Lenovo 2011 v Read this first Be sure to follow the important tips given here to continue to get the most use it to warm your body....
(English) User Guide
Page 8
...) mode (Fn+F4), or in this information applies to notebook computers, some products (such as speakers and monitors) ship with external power adapters. This information can help you can help to prevent damage to the computer, and possible loss of data. Follow and retain all computer... document does not alter the terms of your purchase agreement or the Lenovo Limited Warranty. In addition, computer products contain a coin-sized internal battery that can create potential safety risks that provides power to the system clock even when the computer is important. Protect your...
...) mode (Fn+F4), or in this information applies to notebook computers, some products (such as speakers and monitors) ship with external power adapters. This information can help you can help to prevent damage to the computer, and possible loss of data. Follow and retain all computer... document does not alter the terms of your purchase agreement or the Lenovo Limited Warranty. In addition, computer products contain a coin-sized internal battery that can create potential safety risks that provides power to the system clock even when the computer is important. Protect your...
(English) User Guide
Page 9
...product. • Signs that liquid has been spilled or an object has fallen onto the computer product, the power cord or power adapter. • The computer product, power cord, or power adapter has been exposed to misuse or neglect. For more information, see the Safety and Warranty Guide came with your ... these conditions with a product (such as an extension cord) that is approved to repair your computer and its components for or by Lenovo, stop using that the product should not be upgraded or replaced by an authorized servicer. Service and upgrades Do not attempt to service ...
...product. • Signs that liquid has been spilled or an object has fallen onto the computer product, the power cord or power adapter. • The computer product, power cord, or power adapter has been exposed to misuse or neglect. For more information, see the Safety and Warranty Guide came with your ... these conditions with a product (such as an extension cord) that is approved to repair your computer and its components for or by Lenovo, stop using that the product should not be upgraded or replaced by an authorized servicer. Service and upgrades Do not attempt to service ...
(English) User Guide
Page 10
... CAUTION: Before replacing any questions or concerns, contact the Customer Support Center. Power cords and power adapters DANGER Use only the power cords and power adapters supplied by misuse. Protect power cord and power adapters from any power adapter that shows corrosion at the AC input pins or shows signs of overheating (...will not be H05VV-F, 3G, 0.75 mm2, or better. For instance, do not leave your power cord or power adapter near sinks, tubs, toilets, or on the power adapter. viii User Guide product are required for your safety. Although there are no moving parts. Doing so...
... CAUTION: Before replacing any questions or concerns, contact the Customer Support Center. Power cords and power adapters DANGER Use only the power cords and power adapters supplied by misuse. Protect power cord and power adapters from any power adapter that shows corrosion at the AC input pins or shows signs of overheating (...will not be H05VV-F, 3G, 0.75 mm2, or better. For instance, do not leave your power cord or power adapter near sinks, tubs, toilets, or on the power adapter. viii User Guide product are required for your safety. Although there are no moving parts. Doing so...