If the computer finds a fault in the main board, it stops and displays an error message such as this:

10n-System board error

where n is a number from 1 to 8 that represents the specific LSI circuit causing the error. Give this error number and message to your Customer Care Center.

If an I/O ROM checksum error occurs, you see this message:

nnnn0 ROM error

where nnnn is the number of the segment of the bad I/O ROM on an option card.

Give the error message and number to your Customer Care Center.

Timer and CMOS RAM Check

After the computer successfully completes the system device check, it checks the timer and CMOS RAM. if the information contained in the RAM does not match the actual system installation, it displays this message:

161-System options not set (Run SETUP in DIAGNOSTICS)

If the system clock has not been set, you see this message:

163-Time & Date not set(Run SETUP in DIAGNOSTICS)

The information stored in the CMOS RAM must be corrected. To do this, run the Setup program provided on the Reference diskette. See “Running the Setup Program” in Appendix A for instructions.

C-2 Power-on Diagnostics