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CPU Upgrade
CPU Fault Messages
CPU Fault Messages
There are three CPU fault messages that can occur due to procedure error or component failure during an
upgrade involving system boards and/or CPUs. These fault messages are displayed as hex codes.
a. x = indicates slot number of processor (0, 1, 2...) that detected failure.
Fault Code
a
Description Action
1x08 Illegal Instruction Trap Check for properly installed crys-
tal in System Board socket (XY1).
1xBC Bad CPU Clock Speed Detected Verify that System Board Crystal
(XY1) and Clock Switch (SW1)
are appropriate for speed of
installed processor.
3xBC Bad System Clock Speed Check for proper setting of Clock
Frequency Switch (SW1) on
System Board.
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