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 this message:

161-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 is displayed:
163-Time & Date not set(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 is displayed:

xxx KB OK

where XXX 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, which is 640KB. If the computer detects an error in the first 64KB area, an error message is displayed and the computer halts with no further information.

If there are faulty RAM chips in your system, you see this message:
xxxx0 201-Memory error

Keyboard Controller and Keyboard Check

The computer checks the keyboard controller and keyboard for problems such as failure of one of the keys to release. If there are any errors in the connection between the keyboard and the computer, this error message is displayed:

301-Keyboard error

When a number (XX) precedes this message, the number represents the key (in hexadecimal) that is causing the error. This message may occur after a keyboard reset (Ctrl Alt Del) and does not necessarily indicate a problem.

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