If another failure is found, you see one of these messages:

‘j$Jj-Keyboard or system unit error J&Keyboard or system unit error

Display Card Check

The computer checks the color or monochrome display adapter card that is installed in the computer. An error number and message appear if any faults are found. Number 401 represents an error in the monochrome display adapter, and 501 represents an error in the color display adapter. The messages are:

401-CRT error501-CRT error

Optional RAM Check

If any additional memory (expansion RAM) is installed, the computer

 

then checks that RAM for any malfunction.

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Floppy Disk Drive Seek Check

The computer checks its floppy disk drives by searching the read/ write heads for any malfunction.

If any seek errors are found, you see this message: 601-Diskette error

If this error occurs, confirm that the system diskette is inserted into drive A. If this number still appears after you insert the diskette, the disk drive must be repaired.

B-4 Power-on Diagnostics