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. If any unsafe conditions are present, you must determine how serious the apparent hazard could be and whether you can continue without first correcting the problem.
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: •...
2. Download latest version of the repair shim image from the Lenovo Support Web site at: http://www.lenovo.com/support to create a repair shim. A Lenovo service credential is required.
2. Disconnect the ac power adapter and all cables from the computer, and then remove the bottom cover. See “Chapter 5. Removing a FRU or CRU” on page 29. 3. Remove the battery. See “Remove the battery pack” on page 31. 4.
If the MTM and SN information is already displayed, and match the numbers shown on bottom cover, press the Esc key to leave the values as they are. 5. The Stress test will run for 10 minutes and then the Final Assembly Test and Pack (FATP) section will start. This section includes the independent tests for each component.
• Damage caused by the improper insertion of a personal-computer card (PC card) or the installation of an incompatible card • Improper disc insertion or use of an external optical drive • Fuses blown by attachment of a non-supported device •...
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 B. Lenovo part numbers for replacement FRUs” on page 43 if you need to look up Lenovo part numbers for a particular FRU or CRU.
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 C. Lenovo part numbers for CRUs and miscellaneous parts” on page 45 for replacement screws and order them through the Lenovo CRM system.
DANGER Before removing any FRU or CRU, shut down the computer and unplug all power cords from electrical outlets. Attention: After replacing a FRU, do not turn on the computer until you have ensured that all screws, springs, and other small parts are in place and none are loose inside the computer. Verify this by shaking the computer gently and listening for rattling sounds.
Step 4. Open the keyboard and touch pad sockets, detach the cables, and pull up the upper case. Refer to “Table 12. Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part numbers for the following replacement part:...
1.85 +/- pack to 0.15kgf-cm base cover Refer to “Table 12. Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part numbers of the following replacement parts: Battery pack Remove the speakers Make sure the following FRUs (CRUs) have been removed.
Figure 5. Unplug the LCD cable and disconnect the two wireless LAN cables Step 2. Remove the screws. Figure 6. Remove 6 screws Table 6. Screw specifications — removing the LCD module Screw Number Specifications Color Torque location LCD to M2.5 ×...
Page 40
Step 3. Remove the four screws and then remove the USB board. Figure 10. Remove the USB board Refer to “Table 12. Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part numbers of replacement USB board.
Step 4. Remove the screws. Remove the touch pad module. Figure 11. Remove the touch pad module Refer to “Table 12. Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part numbers of the following replacement parts:...
Page 42
Table 8. Screw specifications — removing the LCD bezel Screw Number Specifications Color Torque location LCD bezel M2.5 × 3.5 mm, flat-head, nylon-coated Silver 3.7 — 4.0 kgf to LCD * cm base cover Step 3. Remove the hinge cover with a plastic opening tool. Figure 14.
Step 6. Remove the LCD bezel. Refer to “Table 13. Part numbers for LCD FRUs” on page 44 to look up the Lenovo part numbers for the replacement LCD bezel. Remove the LCD panel Make sure the following FRUs (or CRUs) have been removed.
Figure 19. Remove 4 screws and remove the LCD bracket Step 4. Remove the LCD panel. Refer to “Table 13. Part numbers for LCD FRUs” on page 44 to look up the Lenovo part numbers for replacement LCD panels. Remove the camera assembly or the LCD & camera cable Make sure the following FRUs (or CRUs) have been removed.
3.7 — 4.0 kgf * LCD base cover Step 2. Remove the hinges. Refer to “Appendix B. Lenovo part numbers for replacement FRUs” on page 43 to look up the Lenovo part numbers for the replacement hinges. Chapter 5. Removing a FRU or CRU...
Appendix B. 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 12. Part numbers for FRUs (CRUs) No.
Page 50
LG-L L15L3PB1 11.1V45Wh3cell bty SB18C15131 Note: Refer to “Appendix C. 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 13. Part numbers for LCD FRUs No.
Appendix C. Lenovo part numbers for CRUs and miscellaneous parts The power cords and ac adapters are CRUs. Table 14. Part numbers for FRUs (CRUs) CRU category Parts description Lenovo part number Screw pack 300e Chromebook Screw bundle&*3202-01898 CS 5M88C07637 Foot Rubber 300e Chromebook D cover cushion&*3202-01935 CS...
Trademarks Lenovo and the “lenovo” logo are trademarks of Lenovo in the United States, other countries or both: Other company, product, or service names may be trademarks or service marks of others.