Epson LT-286 - Manual (Page 119)

3. Disconnect the AC adapter.
4. Turn the
HDD
switch off. Turn on the computer, but do not
insert a diskette and do not use the computer. When the screen
backlighting goes off, leave it off (do not press a key). Allow
the computer to remain in this condition for an hour and 45
minutes. If the Power/Speed light starts to flash before the
hour and 45 minutes is up, the battery is faulty. Contact your
dealer to have the internal battery pack replaced.
Diskette Problems
If you have trouble with a diskette, see if any of the following
questions applies:
1.
2.
3.
Is the diskette damaged? To find out, use DISKCOPY to make
a copy of the diskette. Using the copy, repeat the operation
that caused the problem. If the operation works using the copy
diskette, the original diskette is probably damaged. Discard the
original diskette and use the copy instead.
If you have trouble copying the entire diskette, some of the
sectors may be bad. Try using the COPY command to copy one
file at a time.
Is the diskette write-protected! If the write-protect switch
is set, try moving the switch to remove the write protection.
(Ordinarily, it’s a good idea to leave program diskettes write-
protected, but some programs don’t work properly on write-
protected diskettes.)
Try formatting a blank diskette to determine if the diskette
drive is operating properly.
Troubleshooting B-5