where x is a number from 1 to 8 that represents the specific LSI circuit in which the error is found. Your service dealer needs this information to find and correct the problem.

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

xxxx0 ROM error

where xxxx is the number of the segment of the bad I/O ROM.

Clock and CMOS RAM Check

When the system device check is completed successfully, the computer checks the timer and CMOS RAM. If the information contained in the RAM does not match the actual system installation, you see one of these messages:

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

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

The information stored in the CMOS RAM must be corrected. Run the Setup program provided on the diagnostics diskette to correct the installation information.

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

163-Timer & Date not set

(Run SETUP in DIAGNOSTICS)

If the memory allocation has not been set, you see this message:

164-Memory size error

(Run SETUP in DIAGNOSTICS)

RAM Check

The computer now begins to check the RAM installed in both the main board and option cards. During this check, this message displays:

xxxxxx KB 0K

where xxxxxx indicates the amount of memory in which no malfunction is found. This value increases continuously by 64KB up to the amount of RAM installed on the main board. If the computer detects an error in the

C-2

Diagnostics