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.
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 300e 2nd Gen Hardware Maintenance Manual...
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 locate the Power section. The ac power adapter information is displayed.
If it indicates that the battery is not charging, replace the battery. 3. Check the battery status again. If the same error still exists, replace the system board. Lenovo 300e 2nd Gen CRU list Model: Lenovo 300e 2nd Gen...
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Left 1. Battery/Charging status indicator 2. USB-C™ connector / Power connector 3. Always On USB 3.1 connector Gen 1 4. HDMI™ connector 5. Audio connector Chapter 3 Locating computer controls, connectors, and indicators...
Chapter 4. Identifying FRUs (CRUs) All FRUs (CRUs) for Lenovo 300e 2nd Gen The exploded illustrations help Lenovo service technicians identify FRUs or CRUs that they may need to replace when servicing a customer’s computer. Figure 1. Lenovo 300e 2nd Gen exploded view Table 1.
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M.2 solid-state drive (SSD) Power board Speakers Pen board Battery pack Lower case Lenovo Integrated Pen* Lenovo factory recovery USB key* Power cord ac power adapter Miscellaneous parts kits * for selected models Lenovo 300e 2nd Gen 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 by visiting https://support.lenovo.com/partslookup...
Figure 5. Remove the lower case Remove the battery pack Make sure the following FRUs (or CRUs) have been removed. “Remove Lenovo Integrated Pen” on page 35 “Remove the lower case” on page 36 Step 1. Detach the battery connector and power board cable connector from the system board.
Make sure the following FRUs (or CRUs) have been removed. “Remove Lenovo Integrated Pen” on page 35 “Remove the lower case” on page 36 “Remove the battery pack” on page 37 Step 1. Detach the main and auxiliary antenna cable connectors. Lenovo 300e 2nd Gen Hardware Maintenance Manual...
Figure 9. Detach the connectors Step 2. Remove 1 screw. Figure 10. Remove 1 screw Screw specifications Number of screws M2.0 x 3 Step 3. Remove the wireless module by pulling it away from the slot. Figure 11. Remove the wireless module Remove the M.2 solid-state drive Make sure the following FRUs (or CRUs) have been removed.
Make sure the following FRUs (or CRUs) have been removed. “Remove Lenovo Integrated Pen” on page 35 “Remove the lower case” on page 36 “Remove the battery pack” on page 37 Step 1. Detach the pen board connector from the power board. Lenovo 300e 2nd Gen Hardware Maintenance Manual...
Figure 15. Remove the pen board Remove the speakers Make sure the following FRUs (CRUs) have been removed. “Remove Lenovo Integrated Pen” on page 35 “Remove the lower case” on page 36 “Remove the battery pack” on page 37 Step 1.
Figure 17. Remove 2 screws Screw specifications Number of screws M2.0 x 3 Step 3. Remove the speakers. Figure 18. Remove the speakers Remove the RTC battery Make sure the following FRUs (or CRUs) have been removed. Lenovo 300e 2nd Gen Hardware Maintenance Manual...
“Remove Lenovo Integrated Pen” on page 35 “Remove the lower case” on page 36 “Remove the battery pack” on page 37 Step 1. Detach the RTC battery connector from the system board. Figure 19. Detach the connector Step 2. Remove the RTC battery.
Step 1. Detach the World-Facing camera cable connector, LCD cable connector, keyboard cable connector and touchpad cable connector from the system board. Note: Not all 300e Windows 2nd Gen SKUs include World-Facing camera cable. Lenovo 300e 2nd Gen Hardware Maintenance Manual...
Figure 23. Detach the connectors Step 2. Remove 8 screws. Figure 24. Remove 8 screws Screw specifications Number of screws M2.0 x 4 Step 3. Carefully remove the system board and bracket. Figure 25. Remove the system board and bracket Remove the World-Facing camera (for selected models) Make sure the following FRUs (or CRUs) have been removed.
LCD cable connector have been detached from the wireless module and system board. “Remove Lenovo Integrated Pen” on page 35 “Remove the lower case” on page 36 “Remove the battery pack” on page 37 Lenovo 300e 2nd Gen Hardware Maintenance Manual...
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Step 1. Remove 6 screws that secure the hinges to the upper case. Figure 28. Remove 6 screws Screw specifications Number of screws M2.5 x 5 Step 2. Open the hinges. Figure 29. Open the hinges Step 3. From the upper edge, slowly and carefully lift up the upper case. Chapter 5 Removing a FRU or CRU...
LCD module, make sure it has been detached from the upper case. Refer to “Remove the upper case (with keyboard)” on page 46 for instructions. Remove the LCD panel Step 1. Remove the screw rubbers. Figure 31. Remove the screw rubbers Step 2. Remove 2 screws. Lenovo 300e 2nd Gen Hardware Maintenance Manual...
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Figure 32. Remove 2 screws Screw specifications Number of screws M2.0 x 3 Step 3. Carefully remove the strip cover. Figure 33. Remove the strip cover Step 4. Remove 3 screws. Figure 34. Remove 3 screws Screw specifications Number of screws M2.0 x 3 Step 5.
“Remove the upper case (with keyboard)” on page 46 “Remove the LCD panel” on page 48 Step 1. Turn over the LCD panel, and then peel off the aluminum foil that secure the front camera. Lenovo 300e 2nd Gen Hardware Maintenance Manual...
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Figure 37. Peel off the aluminum foil Step 2. Detach the front camera connector. Figure 38. Detach the connector Step 3. Remove the front camera. Figure 39. Remove the front camera Step 4. Detach the LCD cable connector, Wacom connector and sensor connector. Chapter 5 Removing a FRU or CRU...
“Remove the lower case” on page 36 “Remove the battery pack” on page 37 “Remove the upper case (with keyboard)” on page 46 “Remove the LCD panel” on page 48 Step 1. Remove 8 screws. Lenovo 300e 2nd Gen Hardware Maintenance Manual...
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Figure 42. Remove 8 screws Screw specifications Number of screws M2.0 x 3 M2.0 x 2.5 Step 2. Remove the hinges. Figure 43. Remove the hinges Chapter 5 Removing a FRU or CRU...
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