Lenovo 10w Hardware Maintenance Manual

Also see for 10w: User guide

Chapter 2. General checkoutBefore you go to the checkout instructions, ensure that you read the following important notes.Important notes:• Only certified trained personnel should service the computer.• Before replacing any FRU, read the entire page on removing and replacing FRUs.• When you replace FRUs, it is recommended to use new nylon-coated screws.• Be extremely careful during such write operations as copying, saving, or formatting. Drives in the computerthat you are servicing sequence might have been altered. If you select an incorrect drive, data or programs might beoverwritten.• Replace a FRU only with another FRU of the correct model. When you replace a FRU, make sure that the modelof the machine and the FRU part number are correct by visiting https://support.lenovo.com/partslookup.• A FRU should not be replaced because of a single, unreproducible failure. Single failures can occur for a varietyof reasons that have nothing to do with a hardware defect, such as cosmic radiation, electrostatic discharge, orsoftware errors. Consider replacing a FRU only when a problem recurs. If you suspect that a FRU is defective, clearthe error log and run the test again. If the error does not recur, do not replace the FRU.• Be careful not to replace a nondefective FRU.What to do firstWhen you return a FRU, you must include the following information in the parts exchange form or parts returnform that you attach to it:1. Name and phone number of service technician2. Date of service3. Date on which the machine failed4. Date of purchase5. Failure symptoms, error codes appearing on the display, and beep symptoms6. Procedure index and page number in which the failing FRU was detected7. Failing FRU name and part number8. Machine type, model number, and serial number9. Customer's name and addressNote: During the warranty period, the customer may be responsible for repair costs if the computer damagewas caused by misuse, accident, modification, unsuitable physical or operating environment, or impropermaintenance by the customer. Following is a list of some common items that are not covered under warrantyand some symptoms that might indicate that the system was subjected to stress beyond normal use.Before checking problems with the computer, determine whether the damage is covered under the warrantyby referring to the following list:The following are not covered under warranty:• LCD panel cracked from the application of excessive force or from being dropped• 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 21