Apple 600 series manual Utilities

disk test programs	67–68	extensions
for external hard disk		compatibility problems with 56,
for internal hard disk	66–67	58, 59
displaying windows on desktop 40		turning off (in Extensions Manager
documents, DOS 62–63		control panel) 58
DOS disks 57		extremely low frequency (ELF)
drive. See CD-ROM drive, floppy disk		emissions 79
drive, hard disk		eye fatigue problems 77

E		F
ejecting disks 83		fatigue
problems with 84		avoiding 79	77
electrical safety 2, 79, 80, 81, 84		eye problems
electromagnetic emissions 79		files, backing up	40–45
electronic mail 37		Finder
ELF (extremely low frequency)		activating 20
emissions 79		active program indicated in 39
Empty Trash command (Special		application management in 39
menu) 14		automating tasks in 37
entering text. See typing		icon for 39
Enter key 102		Macintosh Guide and 20, 27
erasing external hard disk, by initializing		shortcuts in 29–30
70–71		floppy disk drive			83
erasing internal hard disk, by initializing		ejecting disk from
70, 72	102	inserting disk in		38		31
erasing selected material		location of, in computer
ergonomics 75–79		replacing 36
error messages 50. See also		floppy disks	43
troubleshooting		backing up on
Escape key 102	91–93, 95–99	DOS 57
Ethernet expansion card		ejecting, from drive 83				83
access cover for 32		handling guidelines for
installing 95–96	91–93	initializing 57			38
opening computer for		inserting in drive
slot for 90	90	locking 43			84
and warranty caution		problems ejecting
expanding computer 31–36		problems reading 57
expansion card 89–99		rebuilding desktop on 52
access cover for 32		repairing 68–69		66
installing 90, 94–96	91–93	starting up from
opening computer for		troubleshooting		57, 68–69
slots for 90	90	unlocking 45
and warranty caution		Utilities 46

108 Index