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: Display the video output only on an external display.

If you show programs using DirectDraw or Direct3D

in full-screen mode, only the main display shows the

video output.

Change display settings

1. Right-click a blank area on the desktop and select

Display settings

2. Select the display that you want to configure.

3. Change display settings of your preference.

You can change the settings for both the computer display and the external display. For example, you can
define which one is the main display and which one is the secondary display. You also can change the
resolution and orientation.

Note:

If you set a higher resolution for the computer display than the external display, only part of the screen

can be displayed on the external display.

Chapter 2

Get started with your computer

Summary of Contents for ThinkCentre M90t

Page 1: ...M90t User Guide ...

Page 2: ...rtant safety information on page 85 Safety and Warranty Guide Setup Guide First Edition May 2020 Copyright Lenovo 2020 LIMITED AND RESTRICTED RIGHTS NOTICE If data or software is delivered pursuant to a General Services Administration GSA contract use reproduction or disclosure is subject to restrictions set forth in Contract No GS 35F 05925 ...

Page 3: ...art USB Protection 21 Chapter 5 UEFI BIOS 23 What is UEFI BIOS 23 Enter the BIOS menu 23 Navigate in the BIOS interface 23 Change the display language of UEFI BIOS 23 Change the display mode of UEFI BIOS 24 Set the system date and time 24 Change the startup sequence 24 Enable or disable the configuration change detection feature 25 Enable or disable the automatic power on feature 25 Enable or disa...

Page 4: ...70 Chassis beam 71 Memory module 73 Coin cell battery 75 Power supply assembly 76 E lock 78 Chapter 8 Help and support 81 Self help resources 81 Call Lenovo 82 Before you contact Lenovo 82 Lenovo Customer Support Center 82 Purchase additional services 83 Appendix A Important safety information 85 Appendix B Accessibility and ergonomic information 99 Appendix C Supplemental information about the Ub...

Page 5: ...might not be applicable to your computer Documentation content is subject to change without notice Lenovo makes constant improvements on the documentation of your computer including this User Guide To get the latest documentation go to https pcsupport lenovo com Microsoft makes periodic feature changes to the Windows operating system through Windows Update As a result some information in this docu...

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Page 7: ...e optical drive is in use 3 SD card slot Supported cards Secure Digital SD card Secure Digital eXtended Capacity SDXC UHS 1 card Secure Digital High Capacity SDHC UHS 1 card Note Your computer does not support the content protection for recordable media CPRM feature for the SD card See Use a media card for selected models on page 14 Copyright Lenovo 2020 1 ...

Page 8: ...is indicator is on when the computer is on 7 Microphone connector Connect a microphone 8 Headset connector Connect a headset or headphones to your computer 9 USB C 3 2 Gen 1 connector Charge USB C compatible devices with the output voltage and current of 5 V and 3 A Transfer data at USB 3 2 speed up to 5 Gbps 10 USB 3 2 connectors Gen 1 Connect USB compatible devices such as a USB keyboard USB mou...

Page 9: ... performance monitor 3 Optional connector Depending on the computer model the connector might be a DisplayPort out connector a USB C connector or an HDMI out connector 4 USB 3 2 connectors Gen 1 Connect USB compatible devices such as a USB keyboard USB mouse USB storage device or USB printer 5 USB 3 2 connector Gen 1 Connect USB compatible devices such as a USB keyboard USB mouse USB storage devic...

Page 10: ...nnector 12 Smart cable clip slots Lock devices such as the keyboard and the mouse to your computer through a smart cable clip 13 PCI Express card area Install PCI Express cards into this area to improve the operating performance of the computer Depending on the computer model the connectors in this area vary 14 Security lock slot Lock your computer to a desk table or other fixtures through a Kensi...

Page 11: ...f your computer right click the Start button and then click System Memory Up to four double data rate 4 DDR4 unbuffered dual inline memory modules UDIMMs Storage device 2 5 inch hard disk drive 3 5 inch hard disk drive Up to two M 2 solid state drives Intel Optane memory To view the storage drive capacity of your computer right click the Start button to open the Start context menu and then click D...

Page 12: ...d models Statement on USB transfer rate Depending on many factors such as the processing capability of the host and peripheral devices file attributes and other factors related to system configuration and operating environments the actual transfer rate using the various USB connectors on this device will vary and will be slower than the data rate listed below for each corresponding device USB devi...

Page 13: ...s of the Administrator type With an Administrator account you can create additional user accounts or change account types by doing the following 1 Open the Start menu and select Settings Accounts Family other users 2 Follow the on screen instructions Microsoft account You can also log in to the Windows operating system with a Microsoft account To create a Microsoft account go to the Microsoft sign...

Page 14: ...uter and the Web 8 Task View Display all opened apps and switch among them 9 Windows notification area Display notifications and status of some features 10 Battery status icon Display power status and change battery or power settings When your computer is not connected to ac power the icon changes to 11 Network icon Connect to an available wireless network and display the network status When conne...

Page 15: ...indows notification area A list of available wireless networks is displayed 2 Select a network available for connection Provide required information if needed Use Lenovo Vantage The preinstalled Lenovo Vantage is a customized one stop solution to help you maintain your computer with automated updates and fixes configure hardware settings and get personalized support Access Lenovo Vantage Open the ...

Page 16: ...presentations or expand your workspace If your computer cannot detect the external display right click an empty area of the desktop and then click Display settings Detect Connect to a wireless display To use a wireless display ensure that both your computer and the external display support the Miracast feature Open the Start menu and then click Settings Devices Bluetooth other devices Add Bluetoot...

Page 17: ...y that you want to configure 3 Change display settings of your preference You can change the settings for both the computer display and the external display For example you can define which one is the main display and which one is the secondary display You also can change the resolution and orientation Note If you set a higher resolution for the computer display than the external display only part...

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Page 19: ...waken the computer from Sleep mode press any key on your keyboard To reset the power plan to achieve the best balance between performance and power saving 1 Go to Control Panel and view by large icons or small icons 2 Click Power Options and then choose or customize a power plan of your preference Transfer data Quickly share your files using the built in Bluetooth technology among devices with the...

Page 20: ...Insert a recordable disc into the optical drive that supports recording 2 Do one of the following Open the Start menu and then click Settings Devices AutoPlay Select or turn on Use AutoPlay for all media and devices Open Windows Media Player Double click the ISO file 3 Follow the on screen instructions Use a media card for selected models If your computer has a SD card slot read the following info...

Page 21: ... cable clip 3 Press the clip 2 into the cable lock slot 3 until it snaps into position Purchase accessories Lenovo has a number of hardware accessories and upgrades to help expand the capabilities of your computer Options include memory modules storage devices network cards power adapters keyboards mice and more To shop at Lenovo go to https www lenovo com accessories Chapter 3 Explore your comput...

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Page 23: ...ents or warranties about the function quality or performance of the locking device and security feature You can purchase computer locks from Lenovo Padlock Locking the computer cover through a padlock prevents unauthorized access to the inside of your computer Kensington style cable lock Lock your computer to a desk table or other fixtures through a Kensington style cable lock Copyright Lenovo 202...

Page 24: ...uthorized access to your computer However you are not prompted to enter any UEFI BIOS password when your computer resumes from sleep mode Power on password When a power on password is set you are prompted to enter a valid password each time the computer is turned on The computer cannot be used until the valid password is entered Supervisor password Setting a supervisor password deters unauthorized...

Page 25: ...pervisor Password Set Power On Password Set System Management Password or Hard Disk Password and press Enter 4 Follow the on screen instructions to set change or remove a password 5 Press F10 or Fn F10 to save the changes and exit You should record your passwords and store them in a safe place If you forget the passwords see Clear CMOS on page 27 to remove them by yourself You can also contact a L...

Page 26: ...er The erasing process begins Note During the erasing process the power button and the keyboard are disabled 6 After the erasing process is completed a message is displayed prompting you to reset the system Select Continue Note Depending on the storage drive capacity the erasing process will take half an hour to three hours 7 After the resetting process is completed one of the following will happe...

Page 27: ...art USB Protection function to one of the following modes Disabled default setting You can use the USB storage devices without limitation Read Only You cannot copy data from the computer to the USB storage devices However you can access or modify data on the USB storage devices No Access You cannot access the USB storage devices from the computer To configure the Smart USB Protection function 1 Re...

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Page 29: ...not change the system configurations that are protected by passwords Navigate in the BIOS interface Attention The default configurations are already optimized for you in boldface Improper change of the configurations might cause unexpected results Depending on your keyboard you can navigate in the BIOS interface by pressing the following keys or combinations of Fn and the following keys F1 or Fn F...

Page 30: ...e sequence permanently 1 Depending on the type of the storage device do one of the following If the storage device is internal go to step 2 If the storage device is a disc ensure that the computer is on or turn on the computer Then insert the disc into the optical drive If the storage device is an external device other than a disc connect the storage device to the computer 2 Restart the computer W...

Page 31: ...t up automatically To enable or disable the automatic power on feature 1 Restart the computer When the logo screen is displayed press F1 or Fn F1 2 Select Power Automatic Power On and press Enter 3 Select the feature as desired and press Enter 4 Enable or disable the feature as desired 5 Press F10 or Fn F10 to save the changes and exit Enable or disable the smart power on feature Ensure that the k...

Page 32: ...ettings list Change the ITS performance mode You can adjust the acoustic and thermal performance of your computer by changing the ITS performance mode Three choices are available Best Performance default setting The computer works at the best system performance with normal acoustic level Best Experience The computer works at the best experience with balanced noise and better performance Full Speed...

Page 33: ...int the installation instructions and follow the instructions to update the BIOS Recover from a BIOS update failure 1 Remove all media from the drives and turn off all connected devices 2 Insert the BIOS update disc into the optical drive and then turn off the computer 3 Disconnect all power cords from electrical outlets Then remove any parts that impede access to the Clear CMOS Recovery jumper 4 ...

Page 34: ...conds 6 Turn off the computer by holding the power button for approximately four seconds 7 Disconnect all power cords from electrical outlets 8 Move the jumper back to the standard position 9 Reinstall all the parts that have been removed Then reconnect the power cords for the computer and the monitor to electrical outlets 10 Turn on the computer and the monitor When the logo screen is displayed p...

Page 35: ...rectly c All connected devices that require ac power are connected to properly grounded and working electrical outlets d All connected devices are enabled in UEFI BIOS 2 Use an antivirus program if any to see if the computer has been infected by a virus If the program detects a virus remove the virus 3 See Chapter 6 Troubleshooting diagnostics and recovery on page 29 to resolve the problem you are...

Page 36: ...t up from the correct storage drive or fails to start up Ensure that all storage drive signal cables and power cables are connected correctly Ensure that the storage drive the computer starts up from is listed as the first startup device in UEFI BIOS In rare cases the storage drive with the operating system might get corrupted or damaged In such cases you might need to replace the storage drive If...

Page 37: ...ts the audio function built into the system board is disabled Therefore you must use the audio connectors on the audio adapter Ensure that the program you are running is designed for use in the Microsoft Windows operating system If the program is designed to run in DOS the program does not use the Windows sound feature The program must be configured to use SoundBlaster Pro or SoundBlaster emulatio...

Page 38: ... wrong duplex mode might degrade performance cause data loss or result in lost connections When a Gigabit Ethernet model computer is used at a speed of 1000 Mbps the Ethernet LAN connection fails or errors occur Connect the network cable to the Ethernet connector using Category 5 wiring and a 100 BASE T hub switch not 100 BASE X The Wake On LAN WOL feature does not work Enable the Wake On LAN feat...

Page 39: ... then click Enable device 4 Expand Network adapters to display all network devices Right click each Bluetooth device and then click Enable device Turn on the Bluetooth radio 1 Open the Start menu 2 Click Settings Devices Bluetooth other devices 3 Turn on the Bluetooth switch to enable the Bluetooth feature Update or reinstall the Bluetooth driver Sound does not come from the Bluetooth headset or h...

Page 40: ...e 1 Open the Start menu 2 Click Windows System File Explorer This PC 3 Right click your C drive and then click Properties 4 Check the amount of free space and then click Disk Cleanup 5 A list of unnecessary file categories is displayed Select the category you want to delete and then click OK Disable some Windows features or remove some unnecessary programs 1 Go to Control Panel and view by large i...

Page 41: ...aged Try inserting another disc that you know works If you have multiple CD or DVD drives installed or a combination of CD and DVD drives try inserting the disc into the other drive In some cases only one of the drives is connected to the audio subsystem A bootable recovery medium such as the Product Recovery CD cannot be used to start your computer Ensure that the CD or DVD drive is set as the to...

Page 42: ...cord connect the power cord to a grounded electrical outlet Turn on the serial device and keep the device online Install any programs supplied with the serial device Refer to the documentation that comes with the serial device for more information If you added one serial connector adapter ensure that the adapter is installed correctly USB device problems Problem Solution A USB device cannot be acc...

Page 43: ... you read and follow the on screen recovery instructions The data on your computer might be deleted during the recovery process To avoid data loss make a backup copy of all the data that you want to keep Restore system files and settings to an earlier point 1 Go to Control Panel and view by large icons or small icons 2 Click Recovery Open System Restore Then follow the on screen instructions Resto...

Page 44: ...rt phone numbers for your country or region go to https pcsupport lenovo com supportphonelist Create a recovery USB drive Attention The creation process deletes anything stored on the USB drive To avoid data loss make a backup copy of all the data that you want to keep 1 Ensure that your computer is connected to ac power 2 Prepare a USB drive with capacity of at least 16 GB The actual USB capacity...

Page 45: ...able update packages If the latest UEFI BIOS update package is available follow the on screen instructions to download and install the package From the Lenovo Support Web site Go to https pcsupport lenovo com and select the entry for your computer Then follow the on screen instructions to download and install necessary drivers and software From Windows Update Note The device drivers provided by Wi...

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Page 47: ...ovo at any time upon request You might be required to return the defective part that is replaced by the CRU When return is required 1 return instructions a prepaid shipping label and a container will be included with the replacement CRU and 2 you might be charged for the replacement CRU if Lenovo does not receive the defective CRU within thirty 30 days of your receipt of the replacement CRU For fu...

Page 48: ...ndix A Important safety information on page 85 and print the following instructions Before you open the computer cover turn off the computer and wait several minutes until the computer is cool Replacement procedure 1 Remove any media from the drives and turn off all connected devices and the computer 2 Disconnect all power cords from electrical outlets and disconnect all cables from the computer 3...

Page 49: ...e removed parts Then reconnect the power cord and all disconnected cables to the computer Note If a locking device is available use it to lock the computer Optical drive Prerequisite Before you start read Appendix A Important safety information on page 85 and print the following instructions Chapter 7 CRU replacement 43 ...

Page 50: ...edure 1 Remove the computer cover See Computer cover on page 42 2 Disconnect the signal cable and the power cable from the optical drive 3 Remove the optical drive 4 Remove the optical drive bracket 44 M90t User Guide ...

Page 51: ...5 Install the optical drive bracket 6 To install a new optical drive if there is a plastic shield in the front bezel remove the plastic shield first as shown Chapter 7 CRU replacement 45 ...

Page 52: ...he power cord and all disconnected cables to the computer Front bezel Prerequisite Before you start read Appendix A Important safety information on page 85 and print the following instructions Replacement procedure 1 Remove the computer cover See Computer cover on page 42 2 Remove the optical drive See Optical drive on page 43 46 M90t User Guide ...

Page 53: ... the removed parts Then reconnect the power cord and all disconnected cables to the computer Primary storage drives Prerequisite Before you start read Appendix A Important safety information on page 85 and print the following instructions Chapter 7 CRU replacement 47 ...

Page 54: ...ge drive Otherwise the internal storage drive might get damaged Do not apply pressure to the internal storage drive Do not make the internal storage drive subject to physical shocks or vibration Put the internal storage drive on a soft material such as cloth to absorb physical shocks 2 5 inch primary storage drive bracket and cage 1 Remove the computer cover See Computer cover on page 42 2 Disconn...

Page 55: ...5 Remove the 2 5 inch primary storage drive from the bracket 6 Install the 2 5 inch storage drive to the bracket 7 Install the storage drive with the bracket to the cage Chapter 7 CRU replacement 49 ...

Page 56: ...ect the power cord and all disconnected cables to the computer 3 5 inch primary storage drive and bracket 1 Remove the computer cover See Computer cover on page 42 2 Disconnect the signal cable and the power cable from the 3 5 inch primary storage drive 3 Pull the handle of the storage drive bracket to remove the storage drive with the bracket from the 3 5 inch primary storage drive cage 50 M90t U...

Page 57: ...4 Remove the 3 5 inch primary storage drive from the bracket 5 Install the 3 5 inch primary storage drive to the bracket Chapter 7 CRU replacement 51 ...

Page 58: ... cord and all disconnected cables to the computer 2 5 inch primary storage drive storage drive converter and bracket 1 Remove the computer cover See Computer cover on page 42 2 Disconnect the signal cable and the power cable from the 2 5 inch primary storage drive 3 Pull the handle of the bracket to remove the storage drive converter with the bracket from the 3 5 inch primary storage drive cage 52...

Page 59: ...4 Remove the storage drive converter from the bracket 5 Remove the 2 5 inch primary storage drive from the storage drive converter Chapter 7 CRU replacement 53 ...

Page 60: ...6 Install the 2 5 inch primary storage drive to the storage drive converter 7 Install the storage drive converter to the bracket 54 M90t User Guide ...

Page 61: ... storage drive only for upgrade or repair The internal storage drive is not designed for frequent changes or replacement Before replacing the internal storage drive make a backup copy of all the data that you want to keep Do not touch the contact edge of the internal storage drive Otherwise the internal storage drive might get damaged Do not apply pressure to the internal storage drive Do not make...

Page 62: ...rage drive cage into the chassis Then install the two screws to secure the cage 7 Reinstall all the removed parts Then reconnect the power cord and all disconnected cables to the computer M 2 solid state drive and heat sink Prerequisite Before you start read Appendix A Important safety information on page 85 and print the following instructions 56 M90t User Guide ...

Page 63: ...o not touch the contact edge of the internal storage drive Otherwise the internal storage drive might get damaged Do not apply pressure to the internal storage drive Do not make the internal storage drive subject to physical shocks or vibration Put the internal storage drive on a soft material such as cloth to absorb physical shocks Replacement procedure 1 Remove the computer cover See Computer co...

Page 64: ...he M 2 solid state drive d Insert the stopper For computers with the heat sink for the M 2 solid state drive do one of the following depending on the heat sink type Type 1 a Pull out the stopper 58 M90t User Guide ...

Page 65: ...t sink with the bracket c Remove the heat sink d Remove the M 2 solid state drive e Remove the film that covers the thermal pad on the bracket if any Then install the M 2 solid state drive Chapter 7 CRU replacement 59 ...

Page 66: ...f Remove the film that covers the thermal pad at the bottom of the heat sink if any Then install the heat sink g Install the heat sink with the bracket h Insert the stopper Type 2 60 M90t User Guide ...

Page 67: ...a Pull out the stopper b Remove the heat sink with the M 2 solid state drive c Remove the M 2 solid state drive Chapter 7 CRU replacement 61 ...

Page 68: ...cted cables to the computer M 2 solid state drive bracket Prerequisite Before you start read Appendix A Important safety information on page 85 and print the following instructions Replacement procedure 1 Remove the computer cover See Computer cover on page 42 2 Remove the 2 5 inch primary storage drive cage See Primary storage drives on page 47 3 Remove the M 2 solid state drive and heat sink See...

Page 69: ...es to the computer Optical drive cage Prerequisite Before you start read Appendix A Important safety information on page 85 and print the following instructions Replacement procedure 1 Remove the computer cover See Computer cover on page 42 2 Remove the optical drive See Optical drive on page 43 3 Remove the front bezel See Front bezel on page 46 Chapter 7 CRU replacement 63 ...

Page 70: ...he 3 5 inch secondary storage drive under the optical drive cage 5 Remove the optical drive cage with the 3 5 inch secondary storage drive cage from the chassis 6 Remove the optical drive cage from the 3 5 inch secondary storage drive cage 64 M90t User Guide ...

Page 71: ...mputer Secondary storage drive Prerequisite Before you start read Appendix A Important safety information on page 85 and print the following instructions Attention The internal storage drive is sensitive Inappropriate handling might cause damage and permanent loss of data When handling the internal storage drive observe the following guidelines Replace the internal storage drive only for upgrade o...

Page 72: ...ration Put the internal storage drive on a soft material such as cloth to absorb physical shocks Replacement procedure 1 Remove the computer cover See Computer cover on page 42 2 Remove the optical drive See Optical drive on page 43 3 Remove the front bezel See Front bezel on page 46 4 Remove the optical drive cage See Optical drive cage on page 63 5 Remove the 3 5 inch secondary storage drive wit...

Page 73: ...tall all the removed parts Then reconnect the power cord and all disconnected cables to the computer PCI Express card Prerequisite Before you start read Appendix A Important safety information on page 85 and print the following instructions Replacement procedure 1 Remove the computer cover See Computer cover on page 42 Chapter 7 CRU replacement 67 ...

Page 74: ...tall all the removed parts Then reconnect the power cord and all disconnected cables to the computer PCI Express connector cable Prerequisite Before you start read Appendix A Important safety information on page 85 and print the following instructions 68 M90t User Guide ...

Page 75: ...xpress connector cable from the system board 3 Remove the PCI Express connector cable 4 Install the PCI Express connector cable 5 Connect the cable to the system board 6 Reinstall all the removed parts Then reconnect the power cord and all disconnected cables to the computer Chapter 7 CRU replacement 69 ...

Page 76: ...ppendix A Important safety information on page 85 and print the following instructions Replacement procedure 1 Remove the computer cover See Computer cover on page 42 2 Remove the plastic holder that secures the graphics card 3 Remove the graphics card 70 M90t User Guide ...

Page 77: ... Then reconnect the power cord and all disconnected cables to the computer Chassis beam Prerequisite Before you start read Appendix A Important safety information on page 85 and print the following instructions Replacement procedure 1 Remove the computer cover See Computer cover on page 42 Chapter 7 CRU replacement 71 ...

Page 78: ...al drive cage See Optical drive cage on page 63 5 Remove the plastic holder from the chassis beam See Graphics card and plastic holder on page 70 6 Pull the plastic latch toward the rear end of the chassis and then push the chassis beam toward the top of the chassis 7 Remove the chassis beam from the chassis 72 M90t User Guide ...

Page 79: ...isconnected cables to the computer Memory module Prerequisite Before you start read Appendix A Important safety information on page 85 and print the following instructions Ensure that you follow the installation order for memory modules shown in the following illustration Chapter 7 CRU replacement 73 ...

Page 80: ...on page 43 3 Remove the front bezel See Front bezel on page 46 4 Remove the optical drive cage See Optical drive cage on page 63 5 Remove the plastic holder from the chassis beam See Graphics card and plastic holder on page 70 6 Remove the chassis beam See Chassis beam on page 71 7 Remove the memory module 74 M90t User Guide ...

Page 81: ...figurations A coin cell battery keeps this information active when you turn off the computer The coin cell battery normally requires no charging or maintenance throughout its life however no coin cell battery lasts forever If the coin cell battery fails the date and time information is lost An error message is displayed when you turn on the computer Replacement procedure 1 Remove the computer cove...

Page 82: ...date and time in the UEFI BIOS menu To dispose of the coin cell battery refer to the Lithium coin cell battery notice in the Safety and Warranty Guide Power supply assembly Prerequisite Before you start read Appendix A Important safety information on page 85 and print the following instructions Before you open the computer cover turn off the computer and wait several minutes until the computer is ...

Page 83: ...present inside any component that has this label attached There are no serviceable parts inside these components If you suspect a problem with one of these parts contact a service technician Replacement procedure 1 Remove the computer cover See Computer cover on page 42 2 Remove the optical drive See Optical drive on page 43 3 Remove the front bezel See Front bezel on page 46 4 Remove the primary ...

Page 84: ...connected cables to the computer E lock Prerequisite Before you start read Appendix A Important safety information on page 85 and print the following instructions Replacement procedure 1 Remove the computer cover See Computer cover on page 42 2 Disconnect the E lock cable from the system board 78 M90t User Guide ...

Page 85: ...e E lock 4 Install the E lock 5 Connect the E lock cable to the system board 6 Reinstall all the removed parts Then reconnect the power cord and all disconnected cables to the computer Chapter 7 CRU replacement 79 ...

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Page 87: ...roduct documentation Safety and Warranty Guide Setup Guide This User Guide Regulatory Notice Go to https pcsupport lenovo com Then follow the on screen instructions to filter out the documentation you want Lenovo Support Web site with the latest support information of the following Drivers and software Diagnostic solutions Product and service warranty Product and parts details Knowledge base and f...

Page 88: ...ystem are you using Which version Which software applications were running at the time of the problem Can the problem be reproduced If so how 2 Record the system information Product name Machine type and serial number The following illustration shows where to find the machine type and serial number of your computer Lenovo Customer Support Center During the warranty period you can call Lenovo Custo...

Page 89: ... Lenovo or your reseller if authorized by Lenovo will make selected Engineering Changes ECs that apply to your hardware available Services not covered Replacement or use of parts not manufactured for or by Lenovo or nonwarranted parts Identification of software problem sources Configuration of UEFI BIOS as part of an installation or upgrade Changes modifications or upgrades to device drivers Insta...

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Page 91: ...en when the computer is unplugged so the battery safety information applies to all computer products Conditions that require immediate action Products can become damaged due to misuse or neglect Some product damage is serious enough that the product should not be used again until it has been inspected and if necessary repaired by an authorized servicer As with any electronic device pay close atten...

Page 92: ...laceable Units or CRUs Lenovo provides documentation with instructions when it is appropriate for customers to install options or replace CRUs You must closely follow all instructions when installing or replacing parts The Off state of a power indicator does not necessarily mean that voltage levels inside a product are zero Before you remove the covers from a product equipped with a power cord alw...

Page 93: ...nals and or the connector terminals on a power adapter which can eventually result in overheating Ensure that all power cord connectors are securely and completely plugged into receptacles Do not use any power adapter that shows corrosion at the ac input pins or shows signs of overheating such as deformed plastic at the ac input pins or anywhere on the power adapter Do not use any power cords wher...

Page 94: ...s intended to be operated in Denmark Use a cord set with a grounding type attachment plug The cord set should have the appropriate safety approvals for the country in which the equipment will be installed For units intended to be operated in Norway Sweden Finland Use a cord set with a two prong attachment plug The cord set should have the appropriate safety approvals for the country in which the e...

Page 95: ...Consult an electrician for more information if you have questions about power loads and branch circuit ratings Be sure that the power outlet you are using is properly wired easily accessible and located close to the equipment Do not fully extend power cords in a way that will stress the cords Be sure that the power outlet provides the correct voltage and current for the product you are installing ...

Page 96: ...e any part of the body seek medical care immediately Do not Throw or immerse into water Heat to more than 100 C 212 F Repair or disassemble Leave in an extremely low air pressure environment Leave in an extremely high temperature environment Crush puncture cut or incinerate Dispose of the battery as required by local ordinances or regulations The following statement applies to users in the state o...

Page 97: ...er Keep the cover closed whenever the computer is plugged in Regularly inspect the outside of the computer for dust accumulation Remove dust from vents and any perforations in the bezel More frequent cleanings might be required for computers in dusty or high traffic areas Do not restrict or block any ventilation openings Do not store or operate your computer inside furniture as this might increase...

Page 98: ... cables have been connected to the computer DANGER During electrical storms do not perform any replacement and do not connect the telephone cable to or disconnect it from the telephone outlet on the wall Laser safety information CAUTION When laser products such as CD ROMs DVD drives fiber optic devices or transmitters are installed note the following Do not remove the covers Removing the covers of...

Page 99: ...our computer has both a headphone connector and an audio line out connector always use the headphone connector for earphones headphones or a headset However the headphone connector does not support the microphone of the headset If your computer has both a headset connector and an audio line out connector always use the headset connector for earphones headphones or a headset Excessive sound pressur...

Page 100: ...DANGER Plastic bags can be dangerous Keep plastic bags away from babies and children to avoid danger of suffocation Glass parts notice CAUTION Some parts of your product may be made of glass This glass could break if the product is dropped on a hard surface or receives a substantial impact If glass breaks do not touch or attempt to remove it Stop using your product until the glass is replaced by t...

Page 101: ... tips on how to minimize visual fatigue please go to https www lenovo com us en safecomp to visit Minimizing Visual Fatigue Tip over hazard prevention notice The computer may cause harm to children if it is not located in an appropriate place Follow the tips below to protect children from harm caused by the computer tipping over Place the computers or monitors on sturdy furniture with a low base o...

Page 102: ...tective packaging and install the part without setting it down When this is not possible place the static protective packaging on a smooth level surface and place the part on it Do not place the part on the computer cover or other metal surface Operating environment Maximum altitude without pressurization Operating From 15 2 m 50 ft to 3048 m 10 000 ft Storage From 15 2 m 50 ft to 10 668 m 35 000 ...

Page 103: ...or any other actions that might have taken place A log book can help you or a Lenovo technician determine the cause of a problem Back up your data on the storage drive regularly You can restore the storage drive from a backup Create a recovery medium as early as possible You can use the recovery medium to recover your operating system even if Windows fails to start up Get the most up to date opera...

Page 104: ... from beneath the keys you can use a camera blower with a brush or use cool air from a hair dryer Clean the computer screen Scratches oil dust chemicals and ultraviolet light can affect the performance of your computer screen Use a dry soft lint free cloth to wipe the screen gently If you see a scratchlike mark on your screen it might be a stain Wipe or dust the stain gently with a soft dry cloth ...

Page 105: ...k Turn on or turn off Mouse Keys Left Alt Left Shift PrtScn or PrtSc Turn on or turn off High Contrast For more information go to https windows microsoft com and then search using any of the following keywords keyboard shortcuts key combinations shortcut keys Ease of Access Center Ease of Access Center on the Windows operating system enables you to configure your computers to suit their physical a...

Page 106: ...e and send e mails To use Speech Recognition 1 Go to Control Panel and view by Category 2 Click Ease of Access Speech Recognition 3 Follow the on screen instructions Screen reader technologies Screen reader technologies are primarily focused on software program interfaces help systems and various online documents For additional information about screen readers see the following Use PDFs with scree...

Page 107: ...ough a screen reader Each image in the documentation also includes adequate alternative text so that visually impaired users can understand the image when they use a screen reader Ergonomic information Good ergonomic practice is important to get the most from your personal computer and to avoid discomfort Arrange your workplace and the equipment you use to suit your individual needs and the kind o...

Page 108: ...ep your head and neck in a comfortable and neutral vertical or upright position Chair Use a chair that gives you good back support and seat height adjustment Use chair adjustments to best suit your comfort posture Arm and hand position If available use chair arm rests or an area on your working surface to provide weight support for your arms Keep your forearms wrists and hands in a relaxed and neu...

Page 109: ...b site or from your computer contact your local Lenovo office or reseller to obtain a printed version of the LLW Access the Ubuntu help system The Ubuntu help system provides information about how to use the Ubuntu operating system To access the help system from Home Screen move your pointer to the Launch bar and then click the Help icon If you cannot find the Help icon from the Launch bar click t...

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Page 111: ...odification of the product including the installation of option cards from other manufacturers This product has been tested and found to comply with the limits for Class B equipment according to European Standards harmonized in the Directives in compliance The limits for Class B equipment were derived for typical residential environments to provide reasonable protection against interference with l...

Page 112: ...n about Lenovo products Recycling and environmental information Lenovo encourages owners of information technology IT equipment to responsibly recycle their equipment when it is no longer needed Lenovo offers a variety of programs and services to assist equipment owners in recycling their IT products For information about recycling Lenovo products go to https www lenovo com us en compliance recycl...

Page 113: ...posed of by an industrial waste disposal contractor certified by a local government In accordance with the Law for Promotion of Effective Utilization of Resources Lenovo Japan provides through its PC Collecting and Recycling Services for the collecting reuse and recycling of disused computers and monitors For details visit the Lenovo Web site at https www lenovo com us en social_responsibility sus...

Page 114: ...imed upon end of life per this Directive In accordance with the European Directive 2006 66 EC batteries and accumulators are labeled to indicate that they are to be collected separately and recycled at end of life The label on the battery may also include a chemical symbol for the metal concerned in the battery Pb for lead Hg for mercury and Cd for cadmium Users of batteries and accumulators must ...

Page 115: ... for Taiwan Restriction of Hazardous Substances RoHS Directive of countries and regions The latest environmental information about Lenovo products is available at https www lenovo com us en compliance eco declaration European Union RoHS This Lenovo product with included parts cables cords and so on meets the requirements of Directive 2011 65 EU on the restriction of the use of certain hazardous su...

Page 116: ...Ukraine RoHS India RoHS RoHS compliant as per E Waste Management Rules Mainland China RoHS 110 M90t User Guide ...

Page 117: ...information refers to ThinkCentre M90t machine types 11CY 11D0 11D4 11D5 This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful Appendix D Compliance and TCO Certified information 111 ...

Page 118: ...ration is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Responsible Party Lenovo United States Incorporated 7001 Development Drive Morrisville NC 27560 Email FCC lenovo com Industry Canada compliance statement CAN ICES 3 B NMB 3 B European Uni...

Page 119: ...rträglichkeit von Betriebsmitteln EMVG vom 20 Juli 2007 früher Gesetz über die elektromagnetische Verträglichkeit von Geräten bzw der EU Richtlinie 2014 30 EU der EU Richtlinie 2014 53 EU Artikel 3 1b für Geräte der Klasse B Dieses Gerät ist berechtigt in Übereinstimmung mit dem Deutschen EMVG das EG Konformitätszeichen CE zu führen Verantwortlich für die Konformitätserklärung nach Paragraf 5 des ...

Page 120: ...ited States Export Administration Regulations EAR and has an Export Classification Control Number ECCN of 5A992 c It can be re exported except to any of the embargoed countries in the EAR E1 country list Lenovo product service information for Taiwan Taiwan precautionary vision statement 警語使用過度恐傷害視力注意事項使用30分鐘請休息10分鐘未滿2歲幼兒不看螢幕 2歲以上每天看螢幕不要超過1小時 Keyboard and mouse compliance statement for Taiwan E...

Page 121: ...oduct the product packaging or displayed electronically on the E label screen or the power settings interface By using ENERGY STAR compliant products and taking advantage of the power management features of your computer you reduce the consumption of electricity Reduced electrical consumption contributes to potential financial savings a cleaner environment and the reduction of greenhouse gas emiss...

Page 122: ...116 M90t User Guide ...

Page 123: ...ht to improve and or modify the products and software programs described in the manuals included with your computer and the content of the manual at any time without additional notice The software interface and function and hardware configuration described in the manuals included with your computer might not match exactly the actual configuration of the computer that you purchase For the configura...

Page 124: ...included with this product Lenovo may update this document at any time without notice For the latest information or any questions or comments contact or visit the Lenovo Web site https pcsupport lenovo com Trademarks LENOVO LENOVO logo THINKCENTRE and THINKCENTRE logo are trademarks of Lenovo Intel and Optane are trademarks of Intel Corporation or its subsidiaries in the U S and or other countries...

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