About this manual ® This manual contains service and reference information for the following Lenovo products. Product name Machine type (MT) Lenovo E41–55 82FJ, 82FK*, 83C1 and 83C2* * for mainland China Use this manual along with the advanced diagnostic tests to troubleshoot problems.
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 E41-55 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.
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Checking the operational charging To check whether the battery charges properly during operation, do the following: 1. Discharge the battery until the remained battery power is less than 50%. 2. Perform operational charging. Click the battery status icon in the Windows notification area to display detailed battery information.
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 .
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• Ensure that you use the correct screw. It is recommended to use new screws for replacements. If you have a torque screwdriver, tighten all screws firmly to the torque specified in the screw information table for each step. • Ensure that torque screwdrivers are calibrated correctly following country specifications. Lenovo E41-55 Hardware Maintenance Manual...
Chapter 5. Identifying FRUs (CRUs) Major 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. Figure 1. Lenovo E41-55 exploded view Table 1. FRU (CRU) categories...
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CMOS battery Wireless LAN card M.2 2280 solid state drive* M.2 2242 solid state drive* SSD bracket Speakers Power cord ac power adapter Miscellaneous parts kits Lenovo factory recovery USB key* * for selected models Lenovo E41-55 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...
Screw specifications Number of screws M2.0 x 3 Step 2. Remove the hard disk drive with disk drive bracket. Step 3. Remove 4 screws that secure the hard disk drive to the hard disk drive bracket. Lenovo E41-55 Hardware Maintenance Manual...
Figure 5. Remove 4 screws and remove hard disk drive bracket Step 4. Remove the hard disk drive. Remove the memory module bracket and memory DIMM Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 Step 1.
Remove the M.2 solid-state drive by pulling it away from the slot. Remove the M.2 2242 solid-state drive (for selected models) Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 Step 1. Remove 1 screw. Lenovo E41-55 Hardware Maintenance Manual...
Figure 8. Remove 1 screw and remove the M.2 2242 solid-state drive Screw specifications Number of screws M2.0 x 2 Step 2. Pull the M.2 solid-state drive with bracket away from the slot. Step 3. Remove the screw that secures the M.2 2242 solid-state drive to the solid-state drive bracket. Step 4.
Remove 2 screws. Step 3. Remove the thermal fan. Remove the CMOS battery Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 Step 1. Pry up the CMOS battery. Lenovo E41-55 Hardware Maintenance Manual...
Figure 11. Pry up the CMOS battery Step 2. Remove the RTC battery. Remove the built in battery Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 Step 1. Detach the battery connector. Figure 12.
Screw specifications Number of screws M2.0 x 2 Step 5. Remove fingerprint reader. Remove the Wireless LAN card Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 Step 1. Remove the WLAN mylar. Figure 14.
Remove the DC-in cable Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 33 Step 1. Remove 3 screws. Figure 16. Remove 3 screws and lift up the hinge Lenovo E41-55 Hardware Maintenance Manual...
Screw specifications Number of screws M2.5 x 5.5 Step 2. Lift up the hinge. Step 3. Unplug the DC-in cable. Figure 17. Unplug the DC-in cable and remove the DC-in cable Step 4. Remove the DC-in cable. Remove the LCD unit Make sure the following FRUs (CRUs) have been removed.
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M2.5 x 5.5 Figure 18. Remove 6 screws Step 2. Detach Wireless WAN cables. Step 3. Detach LCD cable. Step 4. Remove the cables. Figure 19. Remove the cables Step 5. Pivot the LCD unit downward. Lenovo E41-55 Hardware Maintenance Manual...
Figure 20. Pivot the LCD unit downward Step 6. Remove the LCD unit. Figure 21. Remove LCD unit Remove the system board Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 “Remove the hard disk drive and hard disk drive bracket” on page 34 “Remove the memory module bracket and memory DIMM”...
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Note: A Mylar film might cover the keyboard connector and you need to open it first before accessing to keyboard connector. When you install the system board, remember to attach the mylar on the keyboard connector for better protection of the keyboard. Step 4. Remove 3 screws. Lenovo E41-55 Hardware Maintenance Manual...
Screw specifications Number of screws M2.0 x 3 Figure 24. Remove 3 screws Step 5. Carefully remove the system board. Remove the upper case (with keyboard and touch pad) Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 33 “Remove the hard disk drive and hard disk drive bracket”...
“Remove the LCD bezel” on page 48 Step 1. Grasp the end of two elastic adhesive tapes with tweezers. Pull out each tape slowly in the direction as shown until two elastic tapes are all released from LCD unit. Lenovo E41-55 Hardware Maintenance Manual...
Figure 26. Pull the elastic tapes of LCD bezel Step 2. Turn over the LCD panel. Figure 27. Turn over the LCD panel Step 3. Peel off the sticker. Step 4. Detach the LCD cable connector. Step 5. Remove the LCD panel. Chapter 6 Removing a FRU or CRU...
Number of screws Screw specifications M2.5 x 2.5 Figure 29. Remove 8 screws Step 3. Remove the hinges. Remove the camera cable Make sure the following FRUs (or CRUs) have been removed. “Remove the lower case” on page 33 “Remove the built in battery” on page 39 “Remove the LCD unit”...
“Remove the LCD panel” on page 48 “Remove the camera cable” on page 51 Step 1. Peel off the sticker that secures the camera cable. Step 2. Detach the connector. Step 3. Remove the camera board. Lenovo E41-55 Hardware Maintenance Manual...
Figure 31. Remove the camera board Remove the LCD cover Make sure the following FRUs (CRUs) have been removed. “Remove the lower case” on page 33 “Remove the built in battery” on page 39 “Remove the LCD unit” on page 43 “Remove the LCD bezel”...
Trademarks LENOVO, LENOVO logo, THINKPAD and THINKPAD logo are trademarks of Lenovo. Windows is trademark of the Microsoft group of companies. The terms HDMI and HDMI High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries. USB-C is a registered trademark of USB Implementers Forum.