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Lenovo Yoga C640-13IML Hardware Maintenance Manual
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Lenovo Yoga C640-13IML Hardware Maintenance Manual

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Summary of Contents for Lenovo Yoga C640-13IML

  • Page 1 Lenovo Yoga C640-13IML Hardware Maintenance Manual...
  • Page 2 First Edition (August 2019) © Copyright Lenovo 2019.

  • Page 3: Table Of Contents

    Locate FRU and CRU ... . Chapter 4. Removing a FRU or CRU ....27 © Copyright Lenovo 2019...
  • Page 4 Lenovo Yoga C640-13IML Hardware Maintenance Manual...

  • Page 5: About This Manual

    Important: • This manual is intended only for trained service technicians who are familiar with Lenovo products. • Before servicing a Lenovo product, be sure to read all the information under Chapter 1 “Safety information” on page 1. © Copyright Lenovo 2019...
  • Page 6 Lenovo Yoga C640-13IML Hardware Maintenance Manual...

  • Page 7: Chapter 1. Safety Information

    • Do not work alone under hazardous conditions or near equipment that has hazardous voltages. • Disconnect all power before: – Performing a mechanical inspection © Copyright Lenovo 2019...

  • Page 8: Safety Inspection Guide

    This guide addresses only those items. You should use good judgment to identify potential safety hazards due to attachment of non-Lenovo features or options not covered by this inspection guide.

  • Page 9: Handling Devices That Are Sensitive To Electrostatic Discharge

    4. Check for cracked or bulging batteries. 5. Remove the cover. 6. Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo alterations. 7. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.

  • Page 10: Grounding Requirements

    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 Lenovo Yoga C640-13IML Hardware Maintenance Manual...
  • Page 11 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 12 Lenovo Yoga C640-13IML Hardware Maintenance Manual...
  • Page 13 PERIGO PERIGO PERIGO Chapter 1 Safety information...
  • Page 14 PERIGO PERIGO PERIGO PERIGO PERIGO Lenovo Yoga C640-13IML Hardware Maintenance Manual...
  • Page 15 DANGER DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 16 DANGER DANGER DANGER DANGER VORSICHT Lenovo Yoga C640-13IML Hardware Maintenance Manual...
  • Page 17 VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information...
  • Page 18 VORSICHT VORSICHT VORSICHT Lenovo Yoga C640-13IML Hardware Maintenance Manual...
  • Page 19 Chapter 1 Safety information...
  • Page 20 Lenovo Yoga C640-13IML Hardware Maintenance Manual...
  • Page 21 Chapter 1 Safety information...
  • Page 22 Lenovo Yoga C640-13IML Hardware Maintenance Manual...
  • Page 23 Chapter 1 Safety information...
  • Page 24 Lenovo Yoga C640-13IML Hardware Maintenance Manual...
  • Page 25 Chapter 1 Safety information...
  • Page 26 Lenovo Yoga C640-13IML Hardware Maintenance Manual...

  • Page 27: Chapter 2. General Checkout

    • Scratched (cosmetic) parts • Distortion, deformation, or discoloration of the cosmetic parts • Plastic parts, latches, pins, or connectors that have been cracked or broken by excessive force • Damage caused by liquid spilled into the system © Copyright Lenovo 2019...

  • Page 28: Cru List

    • Check for obvious damage to a hard disk drive. If the spindle of a hard disk drive becomes noisy, the hard disk drive might have been dropped or subject to excessive force. CRU list Table 1. Model: Lenovo Yoga C640-13IML/Lenovo Yoga C640-13IML LTE (Machine type: 81UE/81XL) Type ac power adapter...

  • Page 29: Chapter 3. Identifying Fru (Cru)

    Chapter 3. Identifying FRU (CRU) Locate FRU and CRU The exploded illustrations help Lenovo service technicians identify FRU or CRU that they may need to replace when servicing a customer’s computer. Figure 1. Lenovo Yoga C640-13IML/Lenovo Yoga C640-13IML LTE major exploded view...
  • Page 30 Table 2. Major FRU (CRU) categories FRU (CRU) category Upper case assembly System board dc-in cable WWAN card* Thermal module SIM card tray* Battery I/O brackets Lower case Screw kit M.2 solid-state drive WLAN card * for selected models Lenovo Yoga C640-13IML Hardware Maintenance Manual...
  • Page 31 Figure 2. Lenovo Yoga C640-13IML/Lenovo Yoga C640-13IML LTE LCD exploded view Table 3. LCD FRU (CRU) categories FRU (CRU) category LCD cover Sensor board MIC rubbers LCD panel Transfer board cable Camera cable EDP cable Removable tape kit Chapter 3...
  • Page 32 Table 3. LCD FRU (CRU) categories (continued) Camera shutter Camera Hinges Note: The removable tapes can not be reused. Lenovo Yoga C640-13IML Hardware Maintenance Manual...

  • Page 33: Chapter 4. Removing A Fru Or Cru

    Chapter 4. Removing a FRU or CRU Service tools The following table lists tools for servicing Lenovo computers. Tools with a cross mark are needed for servicing the product models as described by this publication. Prepare them before you service the product.

  • Page 34: Remove The Lower Case

    Step 1. Disconnect all the power cords, cables, and USB devices from the computer. Step 2. Place the computer upside down on a flat surface. Step 3. Remove six screws. Figure 3. Remove six screws Lenovo Yoga C640-13IML Hardware Maintenance Manual...

  • Page 35: Remove The Battery Pack

    M2 x 4 Step 4. Remove the lower case. Figure 4. Remove the lower case Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Lower case Remove the battery pack Make sure the following FRU (or CRU) have been removed.

  • Page 36: Remove The Thermal Module

    M2 x 3.5 Step 2. Remove the battery pack. Figure 6. Remove the battery pack Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Battery pack Remove the thermal module Make sure the following FRU (or CRU) have been removed.
  • Page 37 “Remove the lower case” on page 28 Step 1. Disconnect the battery pack cables from the system board. Attention: Use your fingernail to disconnect the cable. Do not pull the cable. Figure 7. Disconnect the battery cables Step 2. Disconnect the thermal module cable from the system board. Figure 8.

  • Page 38: Remove The I/O Brackets

    Remove the thermal module. Figure 10. Remove the thermal module Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Thermal module Remove the I/O brackets Make sure the following FRU (or CRU) have been removed.
  • Page 39 Figure 11. Disconnect the battery cable Step 2. Remove two screws. Then, remove the I/O brackets. Figure 12. Remove two screws and remove the I/O brackets Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: I/O brackets Chapter 4...

  • Page 40: Remove The Dc-In Cable

    Hold the plug to pull it out of the socket. Do not pull the cable. Use your fingernail to disconnect the cable. Figure 13. Disconnect the dc-in cable Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: dc-in cable Remove the WLAN card Make sure the following FRU (or CRU) have been removed.

  • Page 41: Screw Specifications

    Figure 15. Disconnect the wireless antenna cables, remove one screw and slide the WLAN card out of the slot Callout number Screw specifications Number of screws M2 x 2 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: WLAN card Chapter 4 Removing a FRU or CRU...

  • Page 42: Remove The M.2 Solid-State Drive

    Screw specifications Number of screws M2 x 2 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: M.2 solid-state drive Remove the WWAN card Make sure the following FRU (or CRU) have been removed.
  • Page 43 Figure 18. Disconnect the wireless antenna cables, remove one screw and slide the WWAN card out of the slot Callout number Screw specifications Number of screws M2 x 2 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: WWAN card Chapter 4 Removing a FRU or CRU...

  • Page 44: Remove The System Board

    Disconnect the camera cable, EDP cable, dc-in cable, speaker cable, touchpad cable, LTE antenna cable, backlight cable, keyboard cable, WLAN cable, and fingerprint reader cable. Figure 19. Disconnect all the cables Step 2. Remove three screws. Lenovo Yoga C640-13IML Hardware Maintenance Manual...

  • Page 45: Remove The Upper Case

    M2 x 2 Step 3. Remove the system board. Figure 21. Remove the system board Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: System board Remove the upper case Make sure the following FRU (CRU) have been removed.
  • Page 46 Attention: Use your fingernail to disconnect the cable. Do not pull the cable. Figure 22. Disconnect the battery cable Step 2. Disconnect the camera cable and EDP cable from the system board. Figure 23. Disconnect the camera cable and EDP cable Step 3. Remove six screws. Lenovo Yoga C640-13IML Hardware Maintenance Manual...
  • Page 47 Open the hinges and rotate the LCD module to an angle of 30 degrees or less. Then, remove the upper case. Figure 25. Open the hinges and remove the upper case Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Upper case...

  • Page 48: Remove The Lcd Panel

    Step 1. Remove the bezel cap. Figure 26. Remove the bezel cap Step 2. Pull out the removable tapes. Note: The removable tapes can not be reused. Figure 27. Pull out the removable tapes Lenovo Yoga C640-13IML Hardware Maintenance Manual...

  • Page 49: Remove The Hinges

    Figure 28. Remove two screws and remove the LCD panel Callout Screw specifications Number of screws M2 x 3 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: LCD panel Remove the hinges Make sure the following FRU (or CRU) have been removed.

  • Page 50: Remove The Camera And Sensor Board

    M2.5 x 1.5 Step 2. Remove the hinges. Figure 30. Remove the hinges Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Hinges Remove the camera and sensor board Make sure the following FRU (or CRU) have been removed.

  • Page 51: Remove The Lcd Panel

    Figure 31. Disconnect the cables Step 2. Remove the camera and the sensor board. Figure 32. Remove the camera and the sensor board Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Camera and sensor board Chapter 4...
  • Page 52 Lenovo Yoga C640-13IML Hardware Maintenance Manual...

  • Page 53: Trademarks

    Trademarks LENOVO and the LENOVO logo are trademarks of Lenovo. All other trademarks are the property of their respective owners. © 2019 Lenovo.

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