Epson EQUITY 386/33 PLUS - Manual (Page 160)

8. If you installed a display adapter card in your computer,
and you want to use that adapter as your primary display
adapter, you need to change the setting of jumper J1 on the
main system board to disable the built-in VGA adapter.
Otherwise, you will not see any display on the screen. You
may also need to set jumper J4. See “Changing the Jumper
Settings” in Chapter 4 for instructions.
9. If you are still having difficulty with your monitor, run the
Video diagnostic tests, described in Appendix B. If the
diagnostics program indicates an error, contact the place
where you bought the monitor.
Diskette Problems
If you see an error message or have trouble accessing data on
a diskette, try the following steps:
1. You may have inserted the diskette upsidedown or it may
not be inserted all the way. Remove the diskette from the
drive and reinsert it with the label facing up. If the diskette
drive has a latch, be sure to turn it down to secure the
diskette in the drive. (See Chapter 1 for detailed
instructions on inserting and removing diskettes.)
2. If reinserting the diskette does not solve the problem and
you have access to another diskette drive of the same type,
place the diskette in the other drive and repeat the
operation. If this works, the trouble may be in your diskette
drive. See “Diskette Drive Problems,” below.
3. Check to see if you have inserted the right type of diskette.
For example, are you trying to read a 1.44MB diskette in a
720KB diskette drive? See “Types of Diskette Drives” in
Chapter 1 for more information.
C-12 Troubleshooting