Lenovo 3000 N100 0689 Hardware Maintenance Manual

Also see for 3000 N100: Hardware Maintenance Manual Brochure & specs Brochure Install guide Setup poster

Contents

General descriptionsThe descriptions in this chapter apply to any Lenovo 3000 model that has thePC-Doctor ® for DOS diagnostics program. Some descriptions might not apply toyour particular computer.Read this firstBefore you go to the checkout guide, be sure to read this section.Important notesv Only certified trained personnel should service the computer.v Before replacing any FRU, read the entire page on removing andreplacing FRUs.v When you replace FRUs, use new nylon-coated screws.v Be extremely careful during such write operations as copying, saving, orformatting. Drives in the computer that you are servicing sequence mighthave been altered. If you select an incorrect drive, data or programs mightbe overwritten.v Replace an FRU only with another FRU of the correct model. When youreplace a FRU, make sure that the model of the machine and the FRU partnumber are correct by referring to the FRU parts list.v A FRU should not be replaced because of a single, unreproduciblefailure. Single failures can occur for a variety of reasons that have nothingto do with a hardware defect, such as cosmic radiation, electrostaticdischarge, or software errors. Consider replacing a FRU only when aproblem recurs. If you suspect that a FRU is defective, clear the error logand run the test again. If the error does not recur, do not replace the FRU.v Be careful not to replace a nondefective FRU.What to do firstWhen you do return a FRU, you must include the following information in theparts exchange form or parts return form that you attach to it:__ 1. Name and phone number of servicer__ 2. Date of service__ 3. Date on which the machine failed__ 4. Date of purchase__ 5. Failure symptoms, error codes appearing on the display, and beepsymptoms__ 6. Procedure index and page number in which the failing FRU was detected__ 7. Failing FRU name and part number__ 8. Machine type, model number, and serial number__ 9. Customer’s name and addressNote for warranty:During the warranty period, the customer may be responsible for repair costs if thecomputer damage was caused by misuse, accident, modification, unsuitablephysical or operating environment, or improper maintenance by the customer.© Copyright Lenovo 2006 17