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Removing the nano-SIM card and the nano- 1160 Hall sensor board with cable ..SIM-card tray ....1170 Power button board with cable, power 1010 Keyboard .
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Important: • Use only approved tools and test equipment. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents. • Many customers have, near their equipment, rubber floor mats that contain small conductive fibers to decrease electrostatic discharges (ESD).
0.1 ohm or less between the external ground pin and the frame ground. b. The power cord should be the authorized type specified for your computer. Go to: https:// support.lenovo.com/partslookup c. Insulation must not be frayed or worn. 4. Check for cracked or bulging batteries.
2. Ensure that the ESD protective devices you use have been certified (ISO 9000) as fully effective. When handling ESD-sensitive parts: • Keep the parts in protective packages until they are inserted into the product. • Avoid contact with other people. •...
– “FRU identification” on page 23 Important: • Advise customers to contact the Lenovo Customer Support Center if they need any assistance in obtaining or installing any software fixes, drivers, and UEFI BIOS downloads. Telephone numbers for Lenovo Support are available at: https://pcsupport.lenovo.com/supportphonelist...
Dynamic Configure To Order (CTO) model This model provides the ability for a customer to configure a Lenovo solution from a Web site, and have this configuration sent to fulfillment, where it is built and shipped directly to the customer. The machine label and eSupport will load these products as the 4-character MT, 4-character model, and 2-character country code.
FRU identification To identify FRUs for a product, do the following: 1. Go to: https://support.lenovo.com/partslookup 2. Type the Machine Type in the corresponding field to get a general FRU list, or type the Serial Number for more detailed FRU information.
Note: If you are unable to isolate and repair the problem yourself after running the program, save and print the log files created by the program. You need the log files when you speak to a Lenovo technical support representative.
If the computer you are servicing is not installed with the UEFI diagnostic program, you can download a bootable diagnostic program from the Lenovo Support Web site. The bootable diagnostic program enables you to view system information and test some hardware devices in your computer, such as memory, storage devices, the LCD, and system board buses.
1. Go to https://www.lenovo.com/diags 2. Click Lenovo Bootable Diagnostics. 3. Follow the instructions on the Web site to create a bootable diagnostic medium on a USB device or disc. To use the diagnostic medium you have created, do one of the following: •...
To check the USB-C type ac power adapter, do the following: 1. Connect the computer to a power outlet and turn on the computer. 2. Start Lenovo Vantage program, and then click Hardware Settings ➙ Power. The ac power adapter information is displayed.
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Wire Voltage (V dc) +2.5 to +3.2 Black Ground • If the voltage is correct, replace the system board. • If the voltage is not correct, replace the coin-cell battery. • If the coin-cell battery discharges quickly after replacement, replace the system board. T495 Hardware Maintenance Manual...
Recovering your operating system if Windows 10 fails to start The Windows recovery environment on your computer is capable of operating independently from the Windows 10 operating system. This enables you to recover or repair the operating system even if the Windows 10 operating system fails to start.
If a master hard disk password has been set, it can be used to access the hard disk drive. If no master hard disk password is available, neither Lenovo nor Lenovo authorized service technicians provide any services to reset either the user hard disk password or the master hard disk password, or to recover data from the hard disk drive.
The hard disk drive can be replaced for a scheduled fee. To put the system back to operational status, the only Lenovo and Lenovo-authorized service solution would be to replace the hard disk drive or solid-state drive with a scheduled fee.
Power management To reduce power consumption, the computer has two power management modes: sleep and hibernation. Sleep mode When the computer enters sleep mode, the following events occur: • The LCD is powered off. • The hard disk drive or solid-state drive is powered off. •...
Symptom-to-FRU index This section contains following information: • “Numeric error codes” on page 36 • “Error messages” on page 38 • “Beep errors” on page 38 • “No-beep symptoms” on page 40 • “LCD-related symptoms” on page 40 • “Intermittent problems” on page 41 •...
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Table 2. Numeric error codes (continued) Symptom or error (beeps, if any) FRU or action, in sequence 0191 1. Run the ThinkPad Setup program, and then save System Security - Invalid Remote Change requested. current setting by pressing F10. 2. Replace the system board. 0199 1.
Beep errors Lenovo SmartBeep technology enables you to decode beep errors with your smartphone when a black screen occurs with beeps from your computer. To decode the beep error with Lenovo SmartBeep technology, do the following: 1.
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Error codes Solutions 0001: Reset error (platform reset not de-asserted) 1. Remove the ac power adapter and the removable battery if your computer has one. Then, reset the computer by doing one of the following: • For models with the emergency-reset hole, insert a straightened paper clip into the emergency-reset hole.
If the LCD you are servicing has two or less visible defective pixels, it should not be considered faulty. However, if the LCD has three or more visible defective pixels, it will be deemed as defective by Lenovo and it should be replaced.
Table 5. LCD-related symptoms FRU or action, in sequence Symptom or error No beep, power-on indicator on, and a blank LCD during 1. Run LCD Self Test. POST. 2. Replace the system board. • LCD backlight not working. 1. Reseat the LCD connectors. •...
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b. LCD assembly T495 Hardware Maintenance Manual...
1. Go to Control Panel, and then change the view of Control Panel from Category to Large icons or Small icons. 2. Click Lenovo - Keyboard Manager and the Keyboard Manager window is displayed. 3. Select the options of your preference.
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Table 6. Special keys (continued) Description Special key Open the Snipping Tool program. Fn+Spacebar Switch between different keyboard backlight statuses if your computer supports keyboard backlight. Fn+4 Put the computer into sleep mode. To wake up the computer, press Fn or the power button. Fn+B Equal the Break key on a conventional external keyboard.
CRUs, you can either install the CRU yourself or you can request that a Service Provider install the CRU according to the warranty service for your product. If you intend on installing the CRU, Lenovo will ship the CRU to you. CRU information and replacement instructions are shipped with your product and are available from Lenovo at any time upon request.
Major FRUs and CRUs Note: Depending on the computer model, your computer might look different from the illustration above. Table 7. Major FRUs and CRUs FRU description Self-service CRU Optional-service CRU LCD unit Speaker assembly Power button board with cable Power button Chapter 6 Locations...
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Hall sensor board with cable Fingerprint reader module* Fingerprint reader cable* Trackpad Trackpad cable Keyboard TrackPoint cap Lenovo factory recovery USB key* Miscellaneous parts kits (see “Miscellaneous parts” on page 53) ac power adapter Power cord * for selected models T495 Hardware Maintenance Manual...
Note: The Lenovo factory recovery USB key is used to restore the Microsoft Windows operating system. It might not come with the computer, and a user might order it from https://pcsupport.lenovo.com/ , though additional shipping and handling fees might apply.
• Spec Connector and cable guide This topic provides information to help Lenovo authorized service technicians identify connectors and cables for replacement purpose. To view each FRU and the exploded illustration of the computer, see “Major FRUs and CRUs” on page 49 and “LCD FRUs” on page 51.
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System board connectors and cables Table 10. System board connector and cable guide Item Connector (location) Internal cable required Cable connection Camera/LED connector (internal) Camera/LED cable Connect one end of the cable to the camera/mic combo board and the other end to this connector. Power button board connector Power button board cable The power button board comes...
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Table 10. System board connector and cable guide (continued) Item Internal cable required Connector (location) Cable connection USB-C connector (external) Connect USB-C compatible devices or a USB-C power adapter to this connector. Docking-station connector Connect a supported docking (external) station to your computer through this connector.
Looking up FRU information For detailed FRU information, including part numbers, descriptions, and substitution part numbers, go to: https://support.lenovo.com/partslookup T495 Hardware Maintenance Manual...
CRU to you. CRU information and replacement instructions are shipped with your product and are available from Lenovo at any time upon request. You can find a list of CRUs for your product in this Hardware Maintenance Manual. An electronic version of this manual can be found at .
Do the following when you service the computer: • Keep the screw kit in your tool bag. For the part number of the screw kit, go to: https://support.lenovo.com/partslookup • It is recommended to use new screws. • It is recommended to use each screw only once.
Maintenance key. Note: Only an authorized Lenovo service technician can access the above Web site. 3. Restart the computer. 4. When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is displayed.
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5. Type 2 under Enter the action desired, then press Enter. The Auto UUID generation utility interface is displayed. 6. Type y under Change UUID. OK? [Y/N], then press Enter. A new UUID is created and written. If a valid UUID already exists, it is not overwritten.
CRU to you. CRU information and replacement instructions are shipped with your product and are available from Lenovo at any time upon request. You can find a list of CRUs for your product in this Hardware Maintenance Manual. An electronic version of this manual can be found at .
• If the keyboard must be removed to access other FRUs, you need the keyboard removal tool (product part number: 01LX856) to remove the keyboard. You can purchase the tool as a separate FRU at: https:// support.lenovo.com/partslookup T495 Hardware Maintenance Manual...
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Step Screw (quantity) Color Torque M2 × 1.65 mm, flat-head, nylon-coated (2) Silver 0.143 Nm (1.4 kgf-cm) Chapter 8 Removing or replacing a FRU...
When installing: Ensure that the connector is attached firmly. 1020 Base cover assembly and dummy Nano-SIM-card tray Removal steps of the base cover assembly Loosen the screws that secure the base cover assembly. Chapter 8 Removing or replacing a FRU...
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Pry up the latches in ascending alphabetical order (a to k) and remove the base cover assembly Removal step of the dummy Nano-SIM-card tray Applying labels to the base cover assembly Note: Depending on the country or region of delivery, the labels might be slightly different from the ones in the following illustration.
Win10 GML label GEO label and System label Win10 COA label Country label Serial number label IMEI label Asset tag label 1030 M.2 solid-state drive For access, remove this FRU: • “1020 Base cover assembly and dummy Nano-SIM-card tray” on page 65 Attention: The M.2 solid-state drive is sensitive.
Removal steps of the short M.2 solid-state drive and the bracket Step Screw (quantity) Color Torque Black 0.181 Nm M2 × 2.5 mm, big-head, nylon-coated (1) (1.85 kgf-cm) 1040 Memory module For access, remove this FRU: • “1020 Base cover assembly and dummy Nano-SIM-card tray” on page 65 Removal steps of the memory module T495 Hardware Maintenance Manual...
When installing: Insert the notched end of the memory module into the slot at an angle of about 20 degrees. Press the memory module firmly, and pivot it downwards until it snaps into place. Ensure that the memory module is firmly installed in the slot and does not move easily.
Torque Step Screw (quantity) Color M2 × 2.2+2.3 mm, flat-head, nylon-coated (3) Black 0.181 Nm (1.85 kgf-cm) 1060 Wireless WAN card For access, remove this FRU: • “1020 Base cover assembly and dummy Nano-SIM-card tray” on page 65 Removal steps of the wireless WAN card Torque Step Screw (quantity)
Removal steps of the wireless LAN card Step Screw (quantity) Color Torque Black 0.181 Nm M2 × 2.5 mm, big-head, nylon-coated (1) (1.85 kgf-cm) When installing: Plug the gray cable into the main connector and the black cable into the auxiliary connector.
The Lenovo Vantage program provides an automatic battery diagnostic test that determines if the battery is defective. A battery FRU should not be replaced unless this diagnostic test shows that the battery is defective. The only exception to this is if the battery is physically damaged or a customer is reporting a possible safety issue.
When installing: • Ensure that the battery connector is attached firmly. • Ensure that the base cover assembly is attached firmly; otherwise, battery connection may fail. 1100 Thermal fan assembly For access, remove this FRU: • “1020 Base cover assembly and dummy Nano-SIM-card tray” on page 65 Removal steps of the thermal fan assembly When installing: •...
1110 RJ45 cable and board For access, remove these FRUs: • “1020 Base cover assembly and dummy Nano-SIM-card tray” on page 65 • “1100 Thermal fan assembly” on page 73 Removal steps of the RJ45 cable and board T495 Hardware Maintenance Manual...
Step Screw (quantity) Color Torque 0.181 Nm M2 × 4 mm, wafer-head, nylon-coated (3) Silver (1.85 kgf-cm) 1120 USB cable and board For access, remove these FRUs: • “1020 Base cover assembly and dummy Nano-SIM-card tray” on page 65 • “1090 Built-in battery” on page 72 Chapter 8 Removing or replacing a FRU...
Removal steps of the USB cable and board Step Screw (quantity) Color Torque M2 × 4 mm, wafer-head, nylon-coated (2) Silver 0.181 Nm (1.85 kgf-cm) 1130 Fingerprint reader cable, bracket and board For access, remove these FRUs: • “1020 Base cover assembly and dummy Nano-SIM-card tray” on page 65 •...
Removal steps of the fingerprint reader cable, bracket and board Step Screw (quantity) Color Torque M2 × 2.5 mm, wafer-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm) 1140 Smart card reader module and cable For access, remove these FRUs: • “1020 Base cover assembly and dummy Nano-SIM-card tray” on page 65 •...
Removal steps of the smart card reader module and cable Step Screw (quantity) Color Torque Black 0.181 Nm M2 × 2.5 mm, big-head, nylon-coated (2) (1.85 kgf-cm) 1150 Trackpad and cable For access, remove these FRUs in order: • “1020 Base cover assembly and dummy Nano-SIM-card tray” on page 65 T495 Hardware Maintenance Manual...
• “1090 Built-in battery” on page 72 Removal steps of the trackpad and cable Step Screw (quantity) Color Torque M2 × 2 mm, wafer-head, nylon-coated (4) Silver 0.181 Nm (1.85 kgf-cm) 1160 Hall sensor board with cable For access, remove these FRUs: •...
Removal steps of the hall sensor board with cable 1170 Power button board with cable, power button For access, remove this FRU: • “1020 Base cover assembly and dummy Nano-SIM-card tray” on page 65 Removal steps of the power button board with cable, power button T495 Hardware Maintenance Manual...
Torque Step Screw (quantity) Color M2 × 3 mm, wafer-head, nylon-coated (1) Silver 0.181 Nm (1.85 kgf-cm) 1180 System board Important notices for handling the system board: When handling the system board, read the following: • The system board has an accelerometer, which can be broken when several thousands of G-forces are applied. Note: Dropping a system board from a height of as little as 6 inches so that it falls flat on a hard bench can subject the accelerometer to as much as 6000 G's of shock.
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Note: If the keyboard must be removed to access other FRUs, you need the keyboard removal tool (product part number: 01LX856) to remove the keyboard. You can purchase the tool as a separate FRU at: https://support.lenovo.com/partslookup • “1020 Base cover assembly and dummy Nano-SIM-card tray” on page 65 •...
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Step Screw (quantity) Color Torque M2 × 4 mm, flat-head, nylon-coated (4) Silver 0.181 Nm (1.85 kgf-cm) M2 × 2.5 mm, big-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm) Step Screw (quantity) Color Torque M2 × 3 mm, flat-head, nylon-coated (3) Silver 0.181 Nm (1.85 kgf-cm)
Attention: The Central Processing Unit (CPU) soldered on the top side of the system board is extremely sensitive. When you service the system board, avoid any kind of rough handling. 1190 LCD unit For access, remove this FRU: • “1020 Base cover assembly and dummy Nano-SIM-card tray” on page 65 Removal steps of the LCD unit T495 Hardware Maintenance Manual...
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Step Screw (quantity) Color Torque M2.5 × 4 mm, flat-head, nylon-coated (4) Gray 0.294 Nm (3 kgf-cm) Chapter 8 Removing or replacing a FRU...
Note: If the keyboard must be removed to access other FRUs, you need the keyboard removal tool (product part number: 01LX856) to remove the keyboard. You can purchase the tool as a separate FRU at: https://support.lenovo.com/partslookup • “1020 Base cover assembly and dummy Nano-SIM-card tray” on page 65 •...
Removal steps of the LCD bezel sheet and LCD bezel When installing: After the LCD bezel sheet is removed, it cannot be used anymore. A new LCD bezel sheet is required for replacement. 2020 LCD panel and LCD elastic adhesive tape For access, remove these FRUs in order: •...
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Steps of removing the LCD panel and LCD elastic adhesive tape T495 Hardware Maintenance Manual...
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Steps of installing the LCD panel and LCD elastic adhesive tape Chapter 8 Removing or replacing a FRU...
When installing: Ensure that the LCD connector is attached firmly. 2030 Camera/microphone module For access, remove these FRUs in order: • “1190 LCD unit” on page 84 • “2010 LCD bezel sheet and LCD bezel” on page 86 • “2020 LCD panel and LCD elastic adhesive tape” on page 87 Removal steps of the infrared camera/microphone module and aluminum foil T495 Hardware Maintenance Manual...
When installing: Ensure that the connector is attached firmly. Removal steps of the conventional camera/microphone module When installing: Ensure that the connector is attached firmly. 2040 LCD hinges For access, remove these FRUs in order: • “1190 LCD unit” on page 84 •...
Removal steps of the LCD hinges Step Screw (quantity) Color Torque M2.5 × 2.5 mm, wafer-head, nylon-coated (4) Silver 0.294 Nm (3 kgf-cm) 2050 Camera/LED cable For access, remove these FRUs in order: • “1190 LCD unit” on page 84 •...
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Removal steps of the infrared camera/LED cable When installing: Ensure that the connector is attached firmly. Removal steps of the conventional camera/LED cable When installing: Ensure that the connector is attached firmly. Removal steps of the LED cable Chapter 8 Removing or replacing a FRU...
When installing: Ensure that the connector is attached firmly. 2060 LCD cable For access, remove these FRUs in order: • “1190 LCD unit” on page 84 • “2010 LCD bezel sheet and LCD bezel” on page 86 • “2020 LCD panel and LCD elastic adhesive tape” on page 87 •...
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Attention: When you route the cables, ensure that they are not subject to any tension. Tension could cause the cables to be damaged by the cable guides, or a wire to be broken. Removal steps of the wireless-LAN/WAN antenna assembly Attention: When you route the cables, ensure that they are not subject to any tension.
Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead.
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EU Contact: Lenovo (Slovakia), Landererova 12, 811 09 Bratislava, Slovakia Trademarks LENOVO, LENOVO logo, THINKPAD, THINKPAD logo and TRACKPOINT are trademarks of Lenovo. Microsoft and Windows are trademarks of the Microsoft group of companies. Intel is trademark of Intel Corporation or its subsidiaries in the U.S. and/or other countries. The terms HDMI and HDMI High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries.
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Abbreviation Term Platform Controller Hub POST power-on self-test random-access memory radio frequency RFID radio-frequency identification ring indicator registered jack SATA Serial Advanced Technology Attachment subscriber identity module supervisor password TFTs thin-film transistors UEFI Unified Extensible Firmware Interface Universal Serial Bus UUID universally unique identifier video graphics array...
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Part Number: SP40G76812 Printed in China (1P) P/N: SP40G76812...