LENOVO THINKCENTRE M90T GEN6 (01) PDF MANUAL

The machine types for the ThinkCentre M90t Gen6 are 12YR, 12YS, 12YV, and 12YW.

The power indicator shows the system status of your computer:

On: The computer is starting up or working.

Off: The computer is off or in hibernation mode.

Blinking: The computer is in sleep mode.

Breathing: The computer is in modern standby mode.

The headset connector is compatible with:

• Headphones or earphones with a 3.5mm (0.14 inch), TRS (3-pole) plug

• Headsets with a 3.5mm (0.14 inch), CTIA-compliant TRRS (4-pole) plug or OMTP-compliant TRRS (4-pole) plug

Note: This headset connector does not support standalone external microphones with a TRS (3-pole) plug.

* for selected models

The optional connector, depending on the model, might be a DisplayPort out connector, a USB-C connector, or an HDMI™ out connector.

* for selected models

Maximum altitude (without pressurization)

• Operating: From 0 m (0 ft) to 3048 m (10 000 ft)

• Storage: From 0 m (0 ft) to 12192 m (40 000 ft)

Temperature

• Operating: From 5°C (41°F) to 35°C (95°F)

• Storage: From -40°C (-40°F) to 60°C (140°F)

Relative humidity

• Operating: 20%-80% (non-condensing)

• Storage: 10%-90% (non-condensing)

1. Connect the power cord to the corresponding connector on the back of the computer case.

2. Plug the other end of the power cable into an electrical outlet.

Notes:

• If your computer has a wireless keyboard and mouse, connect them following the relevant instructions.

• You must use the power adapter provided by Lenovo. The use of another power adapter may cause combustion or explosion.

Press and hold the power button on the case to start up the computer.

You can purchase a smart cable clip from Lenovo to lock devices (such as the keyboard and the mouse) to your computer.

1. Insert the clip into the cable-lock slot.

2. Pull the cables you want to lock through the dents in the smart cable clip.

3. Press the clip into the cable-lock slot until it snaps into position.

The Gnome desktop is installed by default and is designed to be simple and easy to use. Details on using Gnome are available by launching the Help application.

Launch an app

• Press the Super key (with the Windows logo) or open the Activities menu on the top left and type in the name of the application you want to launch.

• Click the Show Apps button on the lower left, and select the application you want to launch.

Launch settings

Open the system menu from the top-right corner and click the settings icon.

Connect your computer to a local network through the Ethernet connector on your computer with an Ethernet cable.

If your computer includes a wireless LAN module, you can connect your computer to Wi-Fi® networks.

1. Open the system menu from the top-right corner and turn on the Wi-Fi by clicking the Wi-Fi button.

2. Click > to expand the Wi-Fi section of the menu. A list of available wireless networks is displayed. Click All Networks to see extra options.

3. Select an available network for connection. Provide required information if needed.

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

2. Select the display that you want to configure and change display settings of your preference.

The smart power-on feature helps you start up or wake up the computer from hibernation mode simply by pressing Alt+P. Ensure the keyboard is connected to a USB connector supporting this feature.

To enable or disable the smart power-on feature:

Step 1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.

Step 2. Select Power → Smart Power On and press Enter.

Step 3. Enable or disable the feature as desired.

Step 4. Press F10 or Fn+F10 to save the changes and exit.

For ENERGY STAR® compliant computers, the following power plan takes effect when your computers have been idle for a specified duration:

• Turn off the display: After 5 minutes

• Put the computer to sleep: After 20 minutes

To awaken the computer from Sleep mode, press any key on your keyboard.

To set the power plan:

1. Go to Settings → Power.

2. Choose or customize a power plan of your preference.

Note: Disabling automatic suspend will result in higher power consumption. It is recommended to keep automatic suspend enabled.

You can connect Bluetooth devices like a keyboard, mouse, smartphone, or speakers. Place the device less than 10 meters (33 feet) from the computer.

1. Open the system menu from the top-right corner and turn on the Bluetooth by clicking the Bluetooth button.

2. Click > to expand the Bluetooth section of the menu. A list of discoverable devices is displayed.

3. Select a Bluetooth device, and then follow the on-screen instructions.

Install or remove a disc

1. With the computer on, press the eject button on the optical drive. The tray slides out of the drive.

2. Insert a disc into the tray or remove a disc from the tray, and then push the tray back into the drive.

Note: If the tray does not slide out when you press the eject button, turn off the computer. Then, insert a straightened paper clip into the emergency-eject hole adjacent to the eject button. Use this only in an emergency.

Record a disc

1. Insert a recordable disc into the optical drive that supports recording.

2. In the Blank CD/DVD-R Disc notification that pops up, select Open with CD/DVD Creator.

3. Follow the on-screen instructions.

Install a media card

1. Locate the SD-card slot.

2. Ensure that the metal contacts on the card are facing the ones in the SD-card slot. Insert the card firmly into the SD-card slot until it is secured in place.

Remove a media card

Attention: Before removing a media card, unmount it from the operating system first. Otherwise, data on the card might get corrupted or lost.

1. Launch the Files application.

2. Select the unmount icon next to the card and unmount the card from the operating system.

3. Press the card and remove it from your computer. Store the card safely for future use.

Padlock

Locking the computer cover with a padlock prevents unauthorized access to the inside of your computer.

Security lock

Lock your computer to a desk, table, or other fixtures through a security lock.

E-lock

Your computer might have a security lock solution (E-Lock) to protect from unauthorized tampering of internal components. To enable or disable the E-Lock:

1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.

2. Select Security → Electronic Lock to enable or disable the E-lock.

3. Press F10 or Fn+F10 to save the changes and exit.

You can set the following password types in UEFI BIOS to prevent unauthorized access:

• Power-on password: When set, you are prompted to enter a valid password each time the computer is turned on.

• Supervisor password: Deters unauthorized users from changing configuration settings. If set, you must enter it to access the BIOS menu. It is required to change any configuration settings.

• Hard disk password (for selected models): Prevents unauthorized access to data on the storage drive. When set, you are prompted to enter a valid password to access the storage drive.

• System management password (for selected models): Can be enabled to have the same authority as the supervisor password for controlling security-related features. You can customize its authority via the UEFI BIOS menu (Security → System Management Password Access Control).

1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.

2. Select Security.

3. Depending on the password type, select Set Supervisor 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.

1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.

2. Select Security → secure wipe → Enabled.

3. Press F10 or Fn+F10 to save the changes and exit.

4. Restart the computer. When the logo screen is displayed, press F12 or Fn+F12.

5. Select App Menu → secure wipe and press Enter.

6. Select the storage drive you will wipe and click NEXT.

7. Select the entire storage drive or partition to wipe as desired.

8. Select the method as desired and click NEXT.

9. Click Yes to confirm your option when the prompting window is displayed.

10. If you have set a hard disk password for the storage drive, enter the password. Otherwise, set a temporary password following the on-screen instructions. Then, click NEXT. The wiping process begins.

11. Click Reboot when you are prompted to reset the system.

The cover presence switch prevents the computer from logging into the operating system if the cover is not properly installed or closed.

To enable or disable the cover presence switch:

1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.

2. Select Security → Cover Tamper Detected and press Enter.

3. Select Enabled or Disabled and press Enter.

4. Press F10 or Fn+F10 to save the changes and exit.

Smart USB Protection helps prevent data from being copied to USB storage devices. You can set one of three modes:

• Disabled (default setting): Use USB storage devices without limitation.

• Read Only: You cannot copy data from the computer to USB storage devices, but you can access data on them.

• No Access: You cannot access USB storage devices from the computer.

To configure Smart USB Protection:

1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.

2. Select Security → Smart USB Protection and press Enter.

3. Select the desired setting and press Enter.

4. Press F10 or Fn+F10 to save the changes and exit.

Turn on or restart the computer. When the logo screen is displayed, press F1 or Fn+F1 to enter the UEFI BIOS menu. Follow the on-screen instructions to navigate.

The table below introduces the available settings of the UEFI BIOS menu:

You can enable the ErP LPS compliance mode to reduce electricity consumption when the computer is off or in sleep mode.

To enable or disable the mode:

1. Restart the computer. When the logo screen is displayed, press F1 or Fn+F1.

2. Select Power → Enhanced Power Saving Mode and press Enter.

3. Depending on whether you select Enabled or Disabled, do one of the following:

• If you select Enabled, press Enter. Then, select Power → Automatic Power On and press Enter. Check whether the Wake on LAN feature is disabled automatically. If no, disable it.

• If you select Disabled, press Enter. Then, go to the next step.

4. Press F10 or Fn+F10 to save the changes and exit.

When you install a new program, device driver, or hardware component, you might need to update UEFI BIOS.

Download and install the latest UEFI BIOS update package by one of the following methods:

• Using the built-in software update service: Ubuntu software update will check the LVFS site for any firmware updates and notify you when updates are available.

• From the Lenovo Support Web site:

1. Go to the support website for your product.

2. Download the flash BIOS update driver for the operating system version or the ISO image version. Then, download the installation instructions for the flash BIOS update driver you have downloaded.

3. Print the installation instructions and follow the instructions to update the BIOS.

Customer Replaceable Units (CRUs) are parts that can be replaced by the customer. There are two types:

• Self-service CRUs: Parts that can be replaced easily by customers themselves or by trained service technicians at an additional cost.

• Optional-service CRUs: Parts that can be replaced by customers with a greater skill level. Trained service technicians can also provide service to replace these parts.

Self-service CRUs

• Chassis beam

• Computer cover

• Dust shield*

• Front bezel

• Keyboard*

• M.2 solid-state drive*

• M.2 solid-state drive bracket*

• M.2 solid-state drive heat sink*

• Memory module

• Mouse*

• Optical drive*

• Optical drive bracket*

• ODD and HDD cage

• PCIe bracket

• Power cord

• Hard disk drive*

• Hard disk drive tray

• 3.5-inch primary hard disk drive cage

• 2.5-inch hard disk drive bracket*

• Slim ODD EMI Shielding*

• Slim ODD latch*

• Slim ODD bezel*

• Smart cable*

• Smart cable clip*

• DP cover kit*

• HDMI new cover*

• Dongle*

Optional-service CRUs

• E-lock*

• Graphics card*

• Graphics card holder*

• PCIe card*

• Power supply assembly

* for selected models

Prerequisite: Before you start, read Generic Safety and Compliance Notices. Before you open the computer cover, turn off the computer and wait several minutes until it is cool.

Removal: Pull the dust shield out of the front bezel from the bottom side.

Installation: Install the new dust shield in reverse order.

Prerequisite: Before opening the computer cover, turn off the computer and wait for it to cool.

For access:

1. Remove any media from drives and turn off all connected devices and the computer.

2. Disconnect all power cords and cables from the computer.

3. Unlock any device securing the computer cover.

4. Lay the computer down so the cover faces up.

Removal Steps:

1. Remove the two screws (M6-32 x L7.5, Ni coated) that secure the computer cover to the chassis.

2. Remove the computer cover.

To install, reverse the removal steps. If a locking device is available, use it to lock the computer after installing the cover.

Prerequisite: Read Generic Safety and Compliance Notices. For access, remove the “Computer cover” and “Optical drive and optical drive latch” if present.

Removal Steps:

1. Pry the three tabs to release the front bezel.

2. Slightly pull the front bezel to release its hooks from the slots on the chassis.

Installation Steps:

1. Align the three hooks on the bottom of the front bezel with the slots on the chassis.

2. Pivot the bezel inwards until the tabs on the top of the bezel click into place.

Prerequisite: Read Generic Safety and Compliance Notices. For access, remove the computer cover and disconnect the signal and power cable from the optical drive.

Removal Steps:

1. Press the optical drive latch and push the optical drive out of the disk drive cage.

2. Pull the optical drive latch out of the optical drive.

Installation Steps:

1. Align the latch studs with the holes in the new optical drive.

2. Install the optical drive into the drive cage.

Prerequisite: Read Generic Safety and Compliance Notices. For access, remove the computer cover, optical drive, and its latch, and disconnect cables.

Removal Steps:

1. Use an ejector like a paper clip to eject the optical drive tray.

2. Remove the optical drive bezel from the optical drive.

Installation Steps:

There are four holes on the optical drive tray to locate the bezel.

1. Install the optical drive bezel to the optical drive tray, ensuring it is inserted into these holes.

2. Install the optical drive tray back into the optical drive.

Prerequisite: Read Generic Safety and Compliance Notices. For access, remove the computer cover and front bezel.

Removal Steps:

Push the slim ODD EMI shielding outwards to remove it.

Attention: The internal storage drive is sensitive. Inappropriate handling might cause damage and permanent loss of data. Observe these guidelines:

• Replace the drive only for upgrade or repair. It is not designed for frequent changes.

• Before replacing, make a backup copy of all data.

• Do not touch the contact edge.

• Do not apply pressure to the drive.

• Do not subject the drive to physical shocks or vibration. Place it on a soft material like cloth.

Prerequisite: Remove the computer cover and disconnect the signal and power cables from the hard disk drive.

Removal Steps:

1. Pull the hard disk drive and its drive tray from the primary storage drive cage.

2. Release the hard disk drive from its tray.

Install the new drive by reversing the steps.

Prerequisite: For access, remove the computer cover, optical drive and latch, front bezel, and the HDD in the primary storage drive cage.

Removal Steps:

1. Remove the two screws (M6-32 x L8 mm, Hex Head) that secure the primary hard disk drive cage to the chassis.

2. Remove the primary hard disk drive cage.

To install, reverse the removal steps.

Prerequisite: For access, remove the computer cover, optical drive and latch, and front bezel. Disconnect the signal and power cable from the secondary hard disk drive under the optical drive cage.

Removal Steps:

Press the ODD and HDD cage tab and lift the cage upwards.

Installation Steps:

1. Align the buckles on the ODD and HDD cage with the slots on the chassis.

2. Slide the ODD and HDD cage towards the front panel until it’s clicked into place.

Attention: Handle the internal storage drive with care to avoid damage or data loss. Back up your data before replacement.

Prerequisite: Turn off the computer and wait for it to cool. Remove the computer cover.

Removal steps for Type-1 M.2 solid-state drive (without heat sink):

Release the M.2 solid-state drive from the system board by pulling the SSD clip out of its holder.

Removal steps for Type-2 M.2 solid-state drive (with heat sink):

1. Release the heat sink from the system board by pulling the SSD clip out of its holder.

2. Remove the heat sink.

3. Pinch the two latches on top of the heat sink.

4. Press the other end of the heat sink downward.

5. Remove the M.2 solid-state drive and thermal pad (if any).

Removal steps for Type-3 M.2 solid-state drive (with heat sink):

1. Release the heat sink from the system board by pulling the SSD clip out of its holder.

2. Remove the heat sink.

3. Remove the M.2 solid-state drive and thermal pad (if any).

Note: When installing a new M.2 drive and heat sink, remove the protective film from the thermal pad.

Prerequisite: For access, remove the computer cover and the M.2 solid-state drive and heat sink.

Removal Steps:

Release the M.2 solid-state drive bracket from the chassis by pushing its retaining clip toward the chassis.

Installation Steps:

Align the M.2 solid-state drive bracket with the three holes on the chassis.

Prerequisite: For access, remove the computer cover.

Removal Steps:

1. Open the PCIe latch.

2. Press the securing tab and lift the PCIe card out of the slot.

Note: Do not attempt to install any PCI-Express cards other than a graphics card into the PCI-Express slot next to the microprocessor.

To install, reverse the removal steps.

Prerequisite: For access, remove the computer cover.

Removal Steps:

1. Press the securing tab to release the holder.

2. Pivot the holder horizontally and remove it from the chassis beam.

To install, reverse the removal steps.

Prerequisite: For access, remove the computer cover, optical drive and latch, ODD and HDD cage, and graphics card holder. Disconnect the power cable from the graphics card.

Removal Steps:

1. Open the PCIe latch.

2. Press the securing tab and lift the graphics card out of the slot.

To install, reverse the removal steps.

Prerequisite: For access, remove the computer cover, optical drive and latch, ODD and HDD cage, and graphics card holder.

Installation Order: Ensure you follow the correct installation order for memory modules. For 1 DIMM, install in slot DIMM 2. For 2 DIMMs, install in slots DIMM 2 and DIMM 4. For 3 DIMMs, install in slots DIMM 1, DIMM 2, and DIMM 4. For 4 DIMMs, install in all slots.

Removal Steps:

1. Open the two retaining tabs.

2. Lift the memory module out of the slot.

Installation Steps:

Align the memory module to the slot and press down on both ends until the latches are fully engaged with a click.

Prerequisite: For access, remove the computer cover, optical drive and latch, front bezel, HDD in the primary storage drive cage, and primary hard disk drive cage. Disconnect the power supply assembly cables from the system board.

Removal Steps:

1. Remove the three screws (M6-32 x L8, Hex Head) which secure the power supply assembly to the chassis.

2. Press the retaining tab.

3. Push the power supply assembly inwards and lift it.

To install, reverse the removal steps.

Prerequisite: For access, remove the computer cover and disconnect the E-lock cable from the system board.

Removal Steps:

1. Use a special tool (T15 star wrench) to remove the screw (M3 x L5-T15) which secures the E-lock to the chassis.

2. Pull the E-lock away from the chassis.

To install, reverse the removal steps.

Prerequisite: For access, remove the computer cover, optical drive and latch, front bezel, ODD and HDD cage, graphics card holder, and graphics card if present.

Removal Steps:

1. Press the tab to release one side of the chassis beam from the chassis.

2. Pivot the chassis beam until the hooks on the other side are completely released from the holes on the chassis.

Installation Steps:

1. Align the hooks of the chassis beam on one side with the holes on the rear panel of the chassis.

2. Pivot the chassis beam until the hooks of the other side are clicked into the front panel of the chassis.

Prepare the following information:

1. Record the problem symptoms and details:

• What is the problem? Is it continuous or intermittent?

• Any error message or error code?

• What operating system 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 (located on a label on the computer, e.g., MT-M XXXX-XXXXXX S/N XXXXXXXX)

Accessible documentation:

• Text and images are in high contrast.

• Text is logical and readable; images have alternative text.

• Text is large and clear, and a magnifier can be used.

Keyboards:

• Consistent layout for easier use.

• Tactile markings on some keys for easier identification.

• Appropriate spacing between keys for typing efficiency.

• Sufficient contrast of keys, controls, and labels.

• On-screen or lighted notification for some keys.

• Keys and controls can be operated with one hand and minimal dexterity.

Industry-standard connectors:

Enable better compatibility with peripheral devices.

Operating systems:

Accessibility features can be configured to assist users:

• Vision features make screen contents easier to see.

• Hearing features make screen contents easier to hear.

• Interaction features make the product easier to control.

To access the accessibility features of the Ubuntu operating system, go to Settings → Accessibility.

To access the help system from the 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 the Search icon on the bottom left, and type Help to search for it.