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.
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.
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: •...
• 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. Lenovo 100e Chromebook — CRU list Model: Lenovo 100e Chromebook...
Before replacing any FRUs, use the repair shim to diagnose and identify problems. Note: You do not need to use the repair shim to diagnose problems before replacing CRUs. For the list of CRUs for your computer, refer to “Lenovo 100e Chromebook — CRU list” on page 22. Create a repair shim Step 1.
Disable ROM-write protection You need to disable the ROM-write protection function before you can use a repair shim to diagnose and fix problems. Step 1. Disconnect and the re-connect the battery cable.Refer to “” on page for how to locate and disconnect the battery cable.
Step 6. If the factory test items reveal a defective component, turn off the computer, disconnect the ac power adapter, and then replace the defective component. Step 7. Turn on the computer.The computer should starts to the factory-test-image environment again. It is recommended that you run Final Function Test (FFT) to ensure that new components function correctly.
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Common issues leading to GoogleRequiredTests fail Issue Description HWID mismatch Each Chromebook has a known hardware configuration. Each configuration is assigned an HWID. HWID mismatch can be caused by using unauthorized parts, or missing parts. If the write-protect function is not turned off before recovering the computer with the repair shim, it will also cause HWID mismatch.
The exploded illustrations help Lenovo service technicians identify FRUs or CRUs that they may need to replace when servicing a customer’s computer. Refer to Appendix A “Lenovo part numbers for replacement FRUs” on page 43 if you need to look up Lenovo part numbers for a particular FRU or CRU.
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Figure 1. Lenovo 100e Chromebook exploded view Table 3. FRU (CRU) categories FRU (CRU) category LCD module Upper case (with keyboard) System board WLAN & Bluetooth combo module USB board Hardware Maintenance Manual...
5. To install a new FRU in place, perform the removal procedure in reverse and follow any notes that pertain to replacement. 6. When replacing a FRU, carefully retain and reuse all screws. If screws are missing, look up the Lenovo parts numbers in Appendix B “Lenovo part numbers for CRUs and miscellaneous parts” on page 45 for replacement screws and order them through the Lenovo CRM system.
three things: #1) Respect the privacy of others #2) Think before you type #3) With great power comes great responsibility Type ectool batterycutoff and press Enter. Step 5. When the message SUCCESS. The battery has arranged a cut-off and the system should be Step 6.
Refer to Table 14 “Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part number for the replacement back cover. Remove the LCD module Make sure the following FRUs (CRUs) have been removed and the battery connector has been detached.
Battery pack M2 × 4 mm Silver to upper case Refer to Table 14 “Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part numbers for the following replacement parts: Battery pack Hardware Maintenance Manual...
Step 3. Carefully take the cable out of guiders and remove the speakers. Refer to Table 14 “Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part numbers for the replacement speakers. Remove the WLAN & Bluetooth combo module Make sure the following FRUs (CRUs) have been removed and the battery connector has been detached.
M2 x 3 mm combo card to upper case Refer to Table 14 “Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part numbers for the replacement WLAN & Bluetooth combo modules. Remove the USB board Make sure the following FRUs (CRUs) have been removed: “Remove the back cover”...
Step 3. Remove the USB bracket and the USB board. Refer to Table 14 “Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part numbers for the following replacement parts: USB board USB brackets Note: The replacement USB board includes two cables for connecting with the system board;...
M2 ×4 mm board to upper case Refer to Table 14 “Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part numbers of the following replacement parts: System board USB brackets Upper case Note: Replacement USB brackets come in left and right pairs..
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Note: Open the metal bracket and then disconnect the eDP cable. Step 4. Remove the LCD panel. Refer to Table 15 “Part numbers for LCD FRUs” on page 44 to look up the Lenovo part numbers for the following replacement parts. LCD panel...
LCD base cover Step 2. Remove the hinges. Refer to Appendix A “Lenovo part numbers for replacement FRUs” on page 43 to look up the Lenovo part numbers for the following replacement parts. Hinges Remove the camera board and eDP cable Make sure the following FRUs (or CRUs) have been removed.
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Step 3. Remove the camera board. Refer to Appendix A “Lenovo part numbers for replacement FRUs” on page 43 to look up the Lenovo part numbers for the following replacement parts. eDP cable Camera board LCD base cover Chapter 5...
Appendix A. Lenovo part numbers for replacement FRUs When servicing a customer’s computer, Lenovo service technicians may use part numbers listed in the following tables to order replacement parts through Lenovo CRM (customer relationship management) system. Table 14. Part numbers for FRUs (CRUs) No.
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SCREW PACK B 81ER 5S10R07024 Note: Refer to Appendix B “Lenovo part numbers for CRUs and miscellaneous parts” on page 45 to look up the Lenovo part numbers of ac power adapters and power cords. Table 15. Part numbers for LCD FRUs No.
Appendix B. Lenovo part numbers for CRUs and miscellaneous parts Part numbers for power cords, ac adapters, screw pack and rubber pack are listed in the following table. Note: The power cords and ac adapters are CRUs. Table 16. Part numbers for FRUs (CRUs)
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