Lenovo 15IJL7 Hardware Maintenance Manual

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Hardware Maintenance Manual

IdeaPad Flex 3i Chromebook (15", 7)

Lenovo Flex 3i Chromebook 15"

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Page 1 Hardware Maintenance Manual IdeaPad Flex 3i Chromebook (15″, 7) Lenovo Flex 3i Chromebook 15″...
Page 4 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 2022...
Page 6 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 – Working near power supplies © Copyright Lenovo 2022...
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
Grounding requirements Electrical grounding of the computer is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician. Safety notices (multilingual translations) The safety notices in this section are provided in the following languages: •...
Page 11 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information...
Page 12 Hardware Maintenance Manual...
Page 13 PERIGO PERIGO PERIGO Chapter 1 Safety information...
Page 14 PERIGO PERIGO PERIGO PERIGO PERIGO Hardware Maintenance Manual...
Page 15 DANGER DANGER DANGER DANGER Chapter 1 Safety information...
Page 16 DANGER DANGER DANGER DANGER VORSICHT Hardware Maintenance Manual...
Page 17 VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information...
Page 18 VORSICHT VORSICHT VORSICHT Hardware Maintenance Manual...
Page 19 Chapter 1 Safety information...
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Page 21 Chapter 1 Safety information...
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Page 23 Chapter 1 Safety information...
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Page 25 Chapter 1 Safety information...
Page 26 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 2022...
Page 28: Cru List
Table 1. Model: IP Flex 3 Chrome 15IJL7 (MT: 82T3) Type ac power adapter self-service Power cord self-service Table 2. Model: IP Flex 3 Chrome 15IJL7 1 (MT: 82T3) Type ac power adapter self-service Power cord self-service Hardware Maintenance Manual...
Page 29: Chapter 3. Identifying Frus (Crus)
Chapter 3. Identifying FRUs (CRUs) Locate FRUs and CRUs The exploded illustrations help Lenovo service technicians identify FRUs or CRUs that they may need to replace when servicing a customer’s computer. © Copyright Lenovo 2022...
Page 30 Figure 1. Exploded view Hardware Maintenance Manual...
Page 31 Table 3. FRU (CRU) categories FRU (CRU) category Upper case (with touchpad and keyboard) Speakers Main and auxiliary antennas I/O board Acetate tape I/O board cable (22 pin) I/O board cable (30 pin) Battery pack Lower case System board Touchpad board cable Power cord ac power adapter Screw kit...
Page 32 Figure 2. LCD module - exploded view Table 4. FRU categories for the LCD module FRU (CRU) category LCD cover Hinge Sensor board Hardware Maintenance Manual...
Page 33 Table 4. FRU categories for the LCD module (continued) LCD panel Strip cover EDP cable Camera board Camera AL foil Chapter 3 Identifying FRUs (CRUs)
Page 34 Hardware Maintenance Manual...
Page 35: 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 serving the product models as described by this publication. Prepare them before you service the product.
Page 36: Remove The Lower Case
3. Follow the correct sequence in the steps for removing an FRU, as shown in the illustrations by the numbers in square callouts. 4. When removing an FRU, move it in the direction as shown by the arrow in the illustration. 5.
Page 37: Remove The Battery Pack
Step 3. Pry up the latches and then remove the lower case. Figure 4. Pry up the latches and 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) has been removed.
Page 38: Remove The Touchpad Board Cable
Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Battery pack Remove the touchpad board cable Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 30 “Remove the battery pack” on page 31 Step 1.
Page 39: Remove The Main And Auxiliary Antennas
Figure 7. Remove the speakers Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Speakers Remove the main and auxiliary antennas Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 30 “Remove the battery pack”...
Page 40: Remove The I/O Board Cable
Disconnect the I/O board cable (22 pin or 30 pin) from the system board and the I/O board. Then, remove the I/O board cable (22 pin or 30 pin). Figure 9. Remove the I/O board cable Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: I/O board cable (22 pin)
Page 41: Remove The System Board
Figure 10. Remove the I/O board Screw specifications Number of screws M2.0 x L3.7 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: I/O board Remove the system board Make sure the following FRU (or CRU) has been removed.
Page 42 Figure 11. Remove the Wi-Fi card Screw specifications Number of screws M2.0 x L3.0 Step 3. Disconnect cables connected to the system board. Figure 12. Disconnect cables connected to the system board Step 4. Remove six screws and then remove the system board. Hardware Maintenance Manual...
Page 43: Use A Golden Key U1 Tool To Flash-Write Key Id Information
Number of screws M2.0 x L3.7 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: System board Use a Golden Key U1 tool to flash-write key id information After replacing the system board and re-assembling the computer, use a pre-made Golden Key U1 tool to start the computer and flash-write the serial number (SN), machine type (MT), product name (PN), and UUID to the new system board.
Page 44: Remove The Upper Case (With Touchpad And Keyboard)
Figure 14. Peel off the tape and disconnect the LCD cable Step 3. Rotate the LCD module to an angle of more than 90 degrees and place the computer on a flat surface as shown. Remove eight screws and then remove the LCD module. Figure 15.
Page 45: Disassemble The Lcd Module
“Remove the I/O board” on page 34 “Remove the system board” on page 35 “Remove the LCD module” on page 37 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: Upper case (with touchpad and keyboard) Disassemble the LCD module The LCD module as a whole is not an FRU.
Page 46: Remove The Hinges
Figure 17. Remove two screws and remove the LCD panel Screw specifications Number of screws M2.0 x L3.0 Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: LCD panel Remove the Hinges Make sure the following FRUs (CRUs) have been removed.
Page 47: Remove The Sensor Board
Screw specifications Number of screws M2.0 x L3.0 Go to https://support.lenovo.com/partslookup to look up the Lenovo part number of the following replacement part: Hinges Remove the sensor board Make sure the following FRUs (CRUs) have been removed. “Remove the LCD module” on page 37 “Remove the strip cover”...
Page 48: Remove The Edp Cable
Turn over the camera cable and disconnect the camera cable from the camera board. Remove the camera board. Figure 21. Remove the camera board Go to to look up the Lenovo part numbers of the following https://support.lenovo.com/partslookup replacement parts: Camera board...
Page 49: Remove The Lcd Cover
Disconnect the EDP cable from the LCD panel. Release the EDP cable and then remove the EDP cable. Figure 23. Remove the EDP cable Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: EDP cable Remove the LCD cover Make sure the following FRUs (CRUs) have been removed.
Page 50 Go to to look up the Lenovo part number of the following replacement https://support.lenovo.com/partslookup part: LCD cover Hardware Maintenance Manual...
Page 51: Appendix A. Label Locations
TW vision warning label 70 mm x 10 mm Indonesia rating label 26 mm x 10 mm Malaysia new label 8 mm x 8 mm US/CA/TW/CA_Group 32 mm x 10 mm New BIS label 22 mm x 30 mm © Copyright Lenovo 2022...
Page 52 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. © 2022 Lenovo.

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Lenovo 15IJL7 Hardware Maintenance Manual

Chapter 1. Safety Information

Chapter 2. General Checkout

Chapter 3. Identifying Frus (Crus)

Chapter 4. Removing a FRU or CRU

Appendix A. Label Locations

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