Toshiba 50CT User Guide - Page 134

4 Replacement Procedures 4.1 Overview Before You Begin Look over the procedures in this section before you begin disassembling the computer. Familiarize yourself with the disassembly and reassembly steps. Begin each procedure by removing the AC adapter and the battery pack as instructed in Section 4.2. 1. Do not disassemble the computer unless it is operating abnormally. 2. Use only the correct and approved tools. 3. Make sure the working environment is free from the following elements whether you are using or storing the computer: q Dust and contaminates q Static electricity q Extreme heat, cold and humidity 4. Make sure the FRU you are replacing is causing the abnormal operation by performing the necessary diagnostics tests described in this manual. 5. Do not perform any operations that are not necessary and use only the described procedures for removing and installing FRUs in the computer. 6. After removing parts from the computer, place them in a safe place away from the computer so they will not be damaged and will not interfere with your work. 7. You will remove and replace many screws when you disassemble the computer. When you remove screws, make sure they are put in a safe place and are identified with the correct parts. 8. When assembling the computer, be sure you use the correct screws to secure the various pieces in place. Screw sizes are listed in the corresponding figures. 9. The computer contains many sharp edges and corners, be careful not to injure yourself. 10. After you have replaced an FRU, be sure the computer is functioning properly by performing the appropriate test on the FRU you have fixed or replaced. Libretto 50CT/70CT Maintenance Manual 4-3