If any unsafe conditions are present, you must determine how serious the apparent hazard could be and whether you can continue without first correcting the problem. Yoga 370 Hardware Maintenance Manual...
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: http://www.lenovo.com/serviceparts-lookup c. Insulation must not be frayed or worn. 4. Check for cracked or bulging batteries.
The safety notices in this section are provided in the following languages: • English • Arabic • Brazilian Portuguese • French • German • Hebrew • Japanese • Korean • Spanish • Traditional Chinese DANGER DANGER DANGER Yoga 370 Hardware Maintenance Manual...
After a system board is replaced, ensure that the latest UEFI BIOS is loaded to the system board before completing the service action. To download software fixes, drivers, and UEFI BIOS, go to http://www.lenovo.com/ThinkPadDrivers and follow the instructions on the screen.
Dynamic Configure To Order (CTO) 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.
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To get the general FRU list for a product, do the following: 1. Go to http://www.lenovo.com/support. 2. Follow the instructions on the screen to select a product. 3. Click the Product & Parts tab.
This chapter introduces following information: • “What to do first” on page 23 • “Checkout guide” on page 24 – “Lenovo Companion” on page 24 – “Quick test programs” on page 24 – “UEFI diagnostic program” on page 25 –...
The Lenovo Companion program is available for download at https://shop.lenovo.com/us/en/accessories/software/apps/lenovo-apps/companion/. To run the Lenovo Companion program, open the Start menu and click Lenovo Companion, and then follow the instructions on the screen. Quick test programs Lenovo provides quick test programs to troubleshoot and resolve computer problems.
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.
3. If the voltage is not correct, replace the ac power adapter. 4. If the voltage is acceptable, replace the system board. Note: Noise from the ac power adapter does not always indicate a defect. Yoga 370 Hardware Maintenance Manual...
This computer supports only batteries specially designed for this specific system and manufactured by Lenovo or an authorized builder. The system does not support unauthorized batteries or batteries designed for other systems. If an unauthorized battery or a battery designed for another systems is installed, the system will not charge.
“Symptom-to-FRU index” on page 33 Service Web site: When the latest maintenance diskette and the system program service diskette become available, they will be posted on http://www.lenovo.com/support Recovery information This chapter provides information about the Windows recovery solutions on the Windows 10 operating system.
It is recommended that you create a recovery USB drive as early as possible. If you did not create a recovery USB drive as a precautionary measure, you can contact Lenovo Customer Support Center and purchase one from Lenovo. For a list of the Lenovo Support phone numbers for your country or region, go to: http://www.lenovo.com/support/phone Creating a recovery USB drive To create a recovery USB drive, you need a USB drive with at least 16 GB of storage capacity.
If it has, it can be used for access to 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 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 storage drive with a scheduled fee.
• For Windows 7: Open the Start menu, then click the arrow next to the Shut down button. Click Sleep from the menu displayed. • For Windows 10: Open the Start menu, click Power, and then click Sleep. In certain circumstances, the computer goes into sleep mode automatically: •...
2. Replace the coin-cell battery and run ThinkPad Setup to reset the time and date. 1802 1. Remove network card. Unauthorized network card is plugged in—Power off and 2. Replace the system board. remove the network card. Yoga 370 Hardware Maintenance Manual...
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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The following section describes some beep errors and the corresponding solutions. Note: Do not attempt to service a product yourself unless instructed to do so by the Customer Support Center or product documentation. Only use a Lenovo-authorized service provider to repair your product. Error codes...
LCD technology, but excessive pixel problems can cause viewing concerns.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. Notes: •...
6. If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU. 7. If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU): a. System board b. LCD assembly Yoga 370 Hardware Maintenance Manual...
Cortana personal assistant. To define or change the action for the F12 key, do the following: 1. Open the Lenovo Settings program. 2. Click the input icon 3. Locate the KEYBOARD: USER-DEFINED KEY section and follow the instructions on the screen to complete the setting.
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• Fn+Spacebar: If your computer supports keyboard backlight, press Fn+Spacebar to switch between the different keyboard backlight status (off, low, or high). Yoga 370 Hardware Maintenance Manual...
Keyboard drainage holes Emergency-reset hole Status indicators This topic helps you locate and identify the various status indicators on your computer. Note: Depending on the model, your computer might look different from the following illustration. Yoga 370 Hardware Maintenance Manual...
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Caps Lock indicator When this indicator is on, you can type uppercase letters by directly pressing the letter keys. Fn Lock indicator This indicator shows the status of Fn Lock function. For more information, see Chapter 5 “Function keys” on page 39 . Chapter 6 Locations...
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This indicator shows the ac power and charging status of the computer. • Green: connected to ac power (battery power 80%–100%) • Amber: connected to ac power (battery power 1%–80%) • Off: not connected to ac power Yoga 370 Hardware Maintenance Manual...
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. 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 http://www.lenovo.com/support.
Major FRUs Yoga 370 Hardware Maintenance Manual...
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Hall-sensor-card cable M.2 SSD Wireless-LAN card (with or without WiGig function) Wireless-WAN card Built-in battery Base cover assembly Lenovo factory recovery USB key Miscellaneous parts (See “Miscellaneous parts” on page 49.) Power cord ac power adapter Smart-card-reader cable Smart-card reader...
Note: The Lenovo factory recovery USB key is used to restore the Microsoft Windows operating system. They might not come with the computer, and a user might order them from http://www.lenovo.com/lenovorecovery, though additional shipping and handling fees might apply. LCD FRUs...
Screw kit Connector and cable guide This section provides information for Lenovo authorized service technicians to help identify connectors and cables for replacement purpose. To view each FRU and the exploded illustration of the computer, see “Major FRUs” on page 46 and “LCD FRUs” on page 48.
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Connect one end to the power button card and the other end to this connector. Pen charger connector Pen charger with cable The pen charger comes with a cable. Connect the cable to this connector. Yoga 370 Hardware Maintenance Manual...
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Item Connector (location) Internal cable required Cable connection Audio card connector Audio card cable Connect one end to the audio card and the other end to this connector. Micro-SIM-card slot (external) Insert a micro SIM card into this slot. MicroSD card slot (external) Insert a MicroSD card into this slot.
Connect one end to the camera card, one end to the system board, and the other end to this connector. Looking up FRU information For detailed FRU information, including part numbers, descriptions, and substitution part numbers, go to: http://www.lenovo.com/serviceparts-lookup Yoga 370 Hardware Maintenance Manual...
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. 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 http://www.lenovo.com/support.
ThinkPad Setup program is set to UEFI Only. 1. Connect a USB memory key to the computer. 2. Go to http://www.lenovo.com/maintenanceutilities and follow the instructions on the screen to create a Maintenance Key. Note: Only an authorized Lenovo service technician can access the above Web site.
ThinkPad Setup program is set to UEFI Only. 1. Connect a USB memory key to the computer. 2. Go to http://www.lenovo.com/maintenanceutilities and follow the instructions on the screen to create a Maintenance key. Note: Only an authorized Lenovo service technician can access the above Web site.
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. You can find a list of CRUs for your product in this Hardware Maintenance Manual. An electronic version of this manual is available for downloading at http://www.lenovo.com/support.
Wait three to five minutes to let the computer cool. 1010 ThinkPad Pen Pro or dummy cap Removal steps of the ThinkPad Pen Pro or dummy cap Note: Ensure that you reinstall the ThinkPad Pen Pro or dummy cap after finishing the servicing. Yoga 370 Hardware Maintenance Manual...
1020 Micro-SIM-card tray (available on some models) Removal steps of the micro-SIM-card tray 1030 Base cover assembly For access, remove these FRUs in order: • “1010 ThinkPad Pen Pro or dummy cap” on page 58 • “1020 Micro-SIM-card tray (available on some models)” on page 59 Removal steps of the base cover assembly Loosen the screws and remove the base cover assembly...
“1030 Base cover assembly” on page 59 Important notices for replacing a battery Attention: Lenovo has no responsibility for the performance or safety of unauthorized batteries, and provides no warranties for failures or damage arising out of their use. 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.
Removal steps of the battery DANGER Use only the authorized battery specified for your computer. Any other battery could ignite or explode. Step Screw (quantity) Color Torque M2 × 3 mm, flat-head, nylon-coated (2) Black 0.181 Nm (1.85 kgf-cm) 1050 Hall sensor card For access, remove these FRUs in order: •...
“1010 ThinkPad Pen Pro or dummy cap” on page 58 • “1020 Micro-SIM-card tray (available on some models)” on page 59 • “1030 Base cover assembly” on page 59 • Disconnect the battery cable. See “1040 Battery” on page 60. Yoga 370 Hardware Maintenance Manual...
• Ensure that you partition the M.2 SSD after installing it on the computer you are servicing. Otherwise, the M.2 SSD will not function correctly. For instructions on how to partition an M.2 SSD, go to: http://www.lenovo.com/support/msata-fru Chapter 8 Removing or replacing a FRU...
• “1020 Micro-SIM-card tray (available on some models)” on page 59 • “1030 Base cover assembly” on page 59 • Disconnect the battery cable. See “1040 Battery” on page 60. Removal steps of the coin-cell battery Yoga 370 Hardware Maintenance Manual...
When installing: Ensure that the coin-cell battery connector is attached firmly. 1090 Wireless-LAN card For access, remove these FRUs in order: • “1010 ThinkPad Pen Pro or dummy cap” on page 58 • “1020 Micro-SIM-card tray (available on some models)” on page 59 •...
“1010 ThinkPad Pen Pro or dummy cap” on page 58 • “1020 Micro-SIM-card tray (available on some models)” on page 59 • “1030 Base cover assembly” on page 59 • Disconnect the battery cable. See “1040 Battery” on page 60. Yoga 370 Hardware Maintenance Manual...
Removal steps of the audio card Torque Step Screw (quantity) Color M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm) 1120 Pen holder For access, remove these FRUs in order: • “1010 ThinkPad Pen Pro or dummy cap” on page 58 •...
• “1020 Micro-SIM-card tray (available on some models)” on page 59 • “1030 Base cover assembly” on page 59 • Disconnect the battery cable. See “1040 Battery” on page 60. • “1110 Audio card” on page 66 • “1120 Pen holder” on page 67 Yoga 370 Hardware Maintenance Manual...
Removal steps of the power button card and power-button-card cable Torque Step Screw (quantity) Color M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm) When installing: Ensure that the power card is attached firmly. 1140 Thermal fan assembly For access, remove these FRUs in order: •...
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• Do not touch the fan inlet hole. • Do not twist or pull the cable of the thermal fan assembly. • Do not apply pressure on the top and base covers of the thermal fan assembly. Yoga 370 Hardware Maintenance Manual...
• Do not press the heat pipe. Hold both sides of the heat pipe when you take the thermal fan assembly. • Do not shake or drop the thermal fan assembly. • Ensure that the fan connector is attached firmly. •...
1170 Fingerprint-reader cable and fingerprint-reader bracket (available on some models) For access, remove these FRUs in order: • “1010 ThinkPad Pen Pro or dummy cap” on page 58 • “1020 Micro-SIM-card tray (available on some models)” on page 59 Yoga 370 Hardware Maintenance Manual...
• “1030 Base cover assembly” on page 59 • “1040 Battery” on page 60 • “1110 Audio card” on page 66 • “1120 Pen holder” on page 67 • “1130 Power button card and power-button-card cable” on page 68 Removal steps of the fingerprint-reader cable and fingerprint-reader bracket Torque Step Screw (quantity)
“1010 ThinkPad Pen Pro or dummy cap” on page 58 • “1020 Micro-SIM-card tray (available on some models)” on page 59 • “1030 Base cover assembly” on page 59 • “1040 Battery” on page 60 Yoga 370 Hardware Maintenance Manual...
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Removal steps of the trackpad and trackpad cable Chapter 8 Removing or replacing a FRU...
• “1060 Memory module (for computer models with a replaceable memory module) ” on page 62 • “1070 M.2 SSD” on page 63 • “1080 Coin-cell battery” on page 64 • “1090 Wireless-LAN card” on page 65 • “1100 Wireless-WAN card (available on some models)” on page 65 Yoga 370 Hardware Maintenance Manual...
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Attention: The microprocessor , which is soldered on the system board, is extremely sensitive. When you service the system board, avoid any kind of rough handling. Removal steps of the system board Chapter 8 Removing or replacing a FRU...
Note: Service account and password are required for downloading the sensor calibration tool and the instruction. 1. Go to http://support.lenovo.com/us/en/documents/HT103119 and follow the instructions on the screen. 2. Locate the sensor calibration tool and select the corresponding file name to download the sensor calibration tool or the instruction.
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• “1060 Memory module (for computer models with a replaceable memory module) ” on page 62 • “1070 M.2 SSD” on page 63 • “1080 Coin-cell battery” on page 64 • “1090 Wireless-LAN card” on page 65 • “1100 Wireless-WAN card (available on some models)” on page 65 •...
2030 Camera/microphone card (available on some models) For access, remove this FRU: • “1010 ThinkPad Pen Pro or dummy cap” on page 58 • “1020 Micro-SIM-card tray (available on some models)” on page 59 • “1030 Base cover assembly” on page 59 •...
• “1020 Micro-SIM-card tray (available on some models)” on page 59 • “1030 Base cover assembly” on page 59 • Disconnect the battery cable. See “1040 Battery” on page 60. • “2010 Strip bezel” on page 81 Removal steps of the sensor card Yoga 370 Hardware Maintenance Manual...
Step Screw (quantity) Color Torque 0.181 Nm M2 × 2.5 mm, flat-head, nylon-coated (4) Silver (1.85 kgf-cm) 2050 LCD hinges For access, remove these FRUs in order: • “1010 ThinkPad Pen Pro or dummy cap” on page 58 • “1020 Micro-SIM-card tray (available on some models)” on page 59 •...
Removal steps of the LED cable assembly 2070 Wireless-LAN antenna kit, wireless-WAN antenna kit, or WiGig antenna kit For access, remove these FRUs in order: • “1010 ThinkPad Pen Pro or dummy cap” on page 58 • “1020 Micro-SIM-card tray (available on some models)” on page 59 •...
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Removal steps of the wireless-LAN antenna kit Removal steps of the wireless-WAN antenna kit (available on some models) Yoga 370 Hardware Maintenance Manual...
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Removal steps of the WiGig antenna kit (available on some models) Chapter 8 Removing or replacing a FRU...
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For non-WiGig computer models with both wireless-WAN and wireless-LAN: Wireless-WAN auxiliary antenna (blue) Wireless-LAN auxiliary antenna (black) Wireless-WAN main antenna (orange) Wireless-LAN main antenna (gray) For non-WiGig computer models with wireless-LAN: Wireless-LAN auxiliary antenna (black) Wireless-LAN main antenna (gray) Yoga 370 Hardware Maintenance Manual...
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For WiGig computer models: Wireless-LAN auxiliary antenna (black) Wireless-LAN main antenna (gray) WiGig antenna (white) Chapter 8 Removing or replacing a FRU...
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For electronic emission information on Class B digital devices, refer to the corresponding information in the User Guide. EU contact: Lenovo, Einsteinova 21, 851 01 Bratislava, Slovakia Trademarks The following terms are trademarks of Lenovo in the United States, other countries or both: Lenovo Lenovo logo ThinkPad...
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Part Number: SP40K88757 Printed in (1P) P/N: SP40K88757 *1PSP40K88757*...