Used to turn on your computer. When you cannot shut down the computer from the operating system, press and hold the power button for four or more seconds to turn off the computer. • Power indicator This indicator is on when the computer is on. •...
Used to connect an Ethernet cable for network access. • Mini DisplayPort connector Used to send or receive audio and video signals. You can attach a compatible audio or video device to this connector, such as a high-performance monitor. Depending on the computer model, the connector might vary.
M.2 storage drive slot 1 Machine type and model label The machine type and model label identifies your computer. When you contact Lenovo for help, the machine type and model information helps support technicians to identify your computer and provide faster service.
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• The I/O box enables you to wake up the computer from standby mode through operations on devices connected to the I/O box connectors. P320 Tiny Customer Replaceable Unit Guide...
The cable lock also locks the buttons used to open the computer cover. This is the same type of lock used with many notebook computers. You can order such a cable lock directly from Lenovo by searching for Kensington at: https://support.lenovo.com Figure 5.
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5. Press the mode-switching button on the TIO monitor to change from the TIO mode to the DP mode or HDMI mode. When the computer works with the discrete graphics card, pressing the power button on the TIO monitor only turns on or turns off the TIO monitor. Devices connected to the TIO monitor do not function the same as they are connected to the computer.
• In most areas of the world, Lenovo requires the return of defective CRUs (Customer Replaceable Units). Information about this will come with the CRU or will come a few days after the CRU arrives.
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These CRUs are isolated parts within the computer. They are usually concealed by an access panel that is secured by more than two screws. You must remove the screws and panel to access the specific CRU. Optional-service CRUs can be removed and installed by users or, during the warranty period, by a Lenovo service technician.
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Figure 6. CRUs and FRUs Number FRU description Self-service CRU Optional-service CRU Vertical stand Power adapter bracket Power adapter Power cord Computer cover Microprocessor Chapter 5 Replacing hardware...
CRUs: self-service and optional-service. To check the locations of CRUs, see “Knowing replaceable parts” on page 11. Note: To replace other parts except the CRUs mentioned in the following sections, contact a Lenovo service technician. The support phone numbers are available at https://pcsupport.lenovo.com/supportphonelist...
Replacing the keyboard or wireless keyboard Note: The wireless keyboard is available only on some models. Replacing the keyboard 1. Turn off the computer and disconnect all power cords from electrical outlets. 2. Disconnect the old keyboard cable from the computer. 3.
4. Remove the USB dongle from the keyboard compartment or from the wireless mouse compartment and connect it to an available USB connector on the computer. 5. Close the compartment cover. The keyboard is ready for use. Replacing the mouse or wireless mouse Note: The wireless mouse is available only on some models.
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Figure 10. Opening the battery compartment b. Take out the USB dongle. Figure 11. Taking out the USB dongle c. Connect the USB dongle to a USB connector. Chapter 5 Replacing hardware...
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Figure 12. Connecting the USB dongle to a USB connector d. Install the mouse batteries. Figure 13. Installing the mouse batteries e. Close the battery compartment cover. P320 Tiny Customer Replaceable Unit Guide...
Figure 14. Closing the battery compartment cover f. Push the power switch to the on position. Figure 15. Pushing the power switch to the on position Notes: • The green LED indicates that the mouse is ready for use. • The flashing amber LED indicates a low battery level. •...
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Figure 17. Removing the power cord c. Install the power cord. Figure 18. Installing the power cord d. Install the power adapter. Chapter 5 Replacing hardware...
Figure 19. Installing the power adapter Replacing the vertical stand Attention: Do not open your computer or attempt any repairs before reading the Important Product Information Guide. 1. Remove any media from the drives and turn off all connected devices and the computer. 2.
Figure 21. Installing the vertical stand Replacing the VESA mount bracket Attention: Do not open your computer or attempt any repairs before reading the Important Product Information Guide. 1. Remove any media from the drives and turn off all connected devices and the computer. 2.
b. Install the VESA mount bracket. Figure 23. Installing the VESA mount bracket Replacing the external optical drive Attention: Do not open your computer or attempt any repairs before reading the Important Product Information Guide. 1. Remove any media from the drives and turn off all connected devices and the computer. 2.
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Figure 24. Removing the external optical drive box b. Remove the external optical drive. Figure 25. Removing the external optical drive c. Install the external optical drive. Chapter 5 Replacing hardware...
Figure 26. Installing the external optical drive d. Install the external optical drive box. Figure 27. Installing the external optical drive box Replacing the external I/O box Attention: Do not open your computer or attempt any repairs before reading the Important Product Information Guide.
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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 that are connected to the computer and the external I/O box. 3. Replace the external I/O box. a.
Replacing the power adapter bracket Attention: Do not open your computer or attempt any repairs before reading the Important Product Information Guide. 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 that are connected to the computer.
Removing the computer cover Attention: Do not open your computer or attempt any repairs before reading the Important Product Information Guide. 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 that are connected to the computer.
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Figure 33. Removing the storage drive b. Remove the storage drive bracket. Figure 34. Removing the storage drive bracket c. Install the storage drive bracket. P320 Tiny Customer Replaceable Unit Guide...
Figure 35. Installing the storage drive bracket d. Install the storage drive. Figure 36. Installing the storage drive 6. Connect the storage drive cables to the system board. See “System board” on page 3. 7. Reinstall the computer cover and reconnect the cables. For details, see “Completing the parts replacement”...
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3. Remove the computer cover. For details, see “Removing the computer cover” on page 29. 4. Disconnect the internal speaker cable from the internal speaker connector on the system board. See “System board” on page 3. 5. Replace the internal speaker. a.
Replacing the bottom cover Attention: Do not open your computer or attempt any repairs before reading the Important Product Information Guide. 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 that are connected to the computer.
5. Reinstall the computer cover and reconnect the cables. For details, see “Completing the parts replacement” on page 38. Replacing the memory module Attention: Do not open your computer or attempt any repairs before reading the Important Product Information Guide. If your computer supports one memory module, install the module into the DIMM 1 slot.
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Figure 42. Removing the memory module c. Install the memory module. Figure 43. Installing the memory module d. Close the memory module retainer. Chapter 5 Replacing hardware...
Figure 44. Closing the memory module retainer 6. Reinstall the computer cover and reconnect the cables. For details, see “Completing the parts replacement” on page 38. Replacing the M.2 storage drive Attention: Do not open your computer or attempt any repairs before reading the Important Product Information Guide.
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Figure 45. Unlocking the M.2 storage drive clip b. Remove the M.2 storage drive. Figure 46. Removing the M.2 storage drive c. Install the M.2 storage drive. Chapter 5 Replacing hardware...
Figure 47. Installing the M.2 storage drive d. Lock the M.2 storage drive clip. Figure 48. Locking the M.2 storage drive clip 6. Reinstall the computer cover and reconnect the cables. For details, see “Completing the parts replacement” on page 38. Completing the parts replacement After completing the installation or replacement for all parts, reinstall the computer cover and reconnect the cables.
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2. Ensure that the cables are routed correctly before reinstalling the computer cover. Keep cables clear of the hinges and sides of the computer chassis to avoid interference when reinstalling the computer cover. 3. Install the computer cover. Figure 49. Installing the computer cover 4.
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P320 Tiny Customer Replaceable Unit Guide...
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