Lenovo THINKPAD E40 Hardware Maintenance Manual

Also see for 01994JU: Brochure

Contents

Strategy for replacing FRUsUse the following strategy to prevent unnecessary expense for replacing andservicing FRUs:v If you are instructed to replace a FRU but the replacement does not correct theproblem, reinstall the original FRU before you continue.v Some computers have both a processor board and a system board. If you areinstructed to replace either the processor board or the system board, andreplacing one of them does not correct the problem, reinstall that board, andthen replace the other one.v If an adapter or a device consists of more than one FRU, any of the FRUs maybe the cause of the error. Before replacing the adapter or device, remove theFRUs, one by one, to see if the symptoms change. Replace only the FRU thatchanged the symptoms.Attention: The setup configuration on the computer you are servicing may havebeen customized. Running Automatic Configuration may alter the settings. Notethe current configuration settings (using the View Configuration option); then,when service has been completed, verify that those settings remain in effect.Strategy for replacing a hard disk driveAlways try to run a low-level format before replacing a hard disk drive. This willcause all customer data on the hard disk to be lost. Be sure that the customer has acurrent backup of the data before doing this task.Attention: The drive startup sequence in the computer you are servicing mayhave been changed. Be extremely careful during write operations such as copying,saving, or formatting. If you select an incorrect drive, data or programs can beoverwritten.Before replacing parts:Make sure that all software fixes, drivers, and BIOS downloads are installedbefore replacing any FRUs listed in this manual.After a system board is replaced, ensure that the latest BIOS is loaded to thesystem board before completing the service action.To download software fixes, drivers, and BIOS, do as follows:1. Go to http://www.lenovo.com/support2. Enter the product number of the computer or press Auto-detect button on thescreen.3. Select Downloads and drivers.4. Follow the directions on the screen and install the necessary software.40 ThinkPad Edge 14″, Edge 15″, E40, and E50 Hardware Maintenance Manual