If the jumper is set incorrectly, you will see one of these messages:

401 CRT error

501 CRT error.

If you are using two different types of video cards, set jumper JP12 to the primary monitor type. You may also need to change the setting later if you change the type of monitor you are using. See “Changing the Jumper Settings” in Chapter 5 for instructions.

10.If you are still having difficulty with your monitor, run either the Monochrome Display Adapter and CRT check or the Color Graphics Adapter and CRT check, described in Appendix E. If the diagnostics program indicates an error, contact the place where you bought the monitor.

Diskette Problems

You may see the following message if you are having trouble with a diskette or your diskette drive:

601 Diskette error

If you see this message or have trouble accessing data on a diskette, try the following steps:

1.Did you turn down the diskette drive latch on a 5¼-inch drive to secure the diskette in the drive? See Chapter 3 for more information.

2.You may have inserted the diskette upside-down or it may not be inserted all the way. Remove the diskette from the drive and reinsert it with the label facing up. Be sure to turn down the diskette drive latch. (See Chapter 3 for detailed instructions on inserting and removing diskettes.)

Troubleshooting D-15