Lenovo ThinkPad Hardware Maintenance Manual

Also see for ThinkPad Hard Disk Drive: User guide User manual Hardware Maintenance Manual User guide User guide

Contents

Chapter 3. General checkoutThis chapter presents the following information:• “What to do first” on page 23• “Power system checkout” on page 24Diagnostics: Instructions for accessing and using system resident service diagnostics can be found at thefollowing Web site:http://support.lenovo.com/en_US/research/hints-or-tips/detail.page?DocID=HT052605Note: To access and use the diagnostics, you must have a valid login ID and password.Important:• 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.• Replace a FRU only with another FRU of the correct model.When you replace a FRU, make sure that the model of the machine and the FRU part number are correctby referring to the FRU parts list.• A FRU should not be replaced because of a single, unreproducible failure.Single failures can occur for a variety of reasons that have nothing to do with a hardware defect, suchas cosmic radiation, electrostatic discharge, or software errors. Consider replacing a FRU only whena problem recurs. If you suspect that a FRU is defective, clear the error log and run the test again. Ifthe error does not recur, do not replace the FRU.• Be careful not to replace a non-defective FRU.What to do firstWhen you do return a FRU, you must include the following information in the parts exchange form orparts return form 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. Failing FRU name and part number6. Machine type, model number, and serial number7. Customer's name and addressNote: During the warranty period, the customer may be responsible for repair costs if the tablet 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 tablet, determine whether the damage is covered under the warranty byreferring 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© Copyright Lenovo 2011, 2012 23