4-2 Field Service GuidelinesCleaning the Notebook’s InteriorWhen servicing the inside of the notebook, remove dust and other foreign particles from in-side the system unit as follows.1. Remove the top cover and keyboard using the disassembly procedures discussedlater in this section.2. Dust or vacuum (with a rubber-tipped nozzle) the inside of the system unit par-ticularly the motherboard surface. Use care to avoid damaging or dislodging anycomponents or cables.3. Inspect all cables connectors for damage. Ensure that connectors are seated prop-erly before replacing the cover.Protecting the Disk DrivesTo protect the disk drives and data, back up the system disk periodically on floppy disk-ettes. Periodically use a head-cleaning diskette in the floppy diskette drive to prolong thelife of the drive and to help maintain data integrity.Here are some maintenance procedures to use when servicing a hard disk:n Always back up the data files from the hard disk.n Run a virus detecting program for possible virus infested area on the hard disk.n Use SCANDISK to correct any errors found in the directory and File AllocationTable (FAT). This will also free up space from any unused sectors.n Never turn the computer off when the hard disk is being accessed.n Never move or raise the computer while the hard disk is being accessed, most es-pecially don't jar the hard disk as this may cause a hard disk crash.n Use hard disk maintenance programs like DEFRAG under DOS or Norton Utili-ties SPEEDISK programs. These programs reorganize your hard disk by eliminat-ing fragmentation and improves the hard disk access time.
