MITSUBISHI ELECTRIC PCL5100 MOTHERBOARD - Manual (Page 22)

P C L 5 1 0 0 B I O S S e t u p & P O S T
PCL5100 USER GUIDE 7
Terminal POST errors and beep codes
There are several POST routines that shut down the computer if
they fail. If possible, the BIOS displays a two-digit hexadecimal
code and/or sounds a sequence of beeps to identify the point at
which POST failed. The most usual errors are listed below.
The BIOS also issues one long tone followed by two short tones if
the video system is faulty or if an external ROM module (including
video ROM) fails.
Turn off the computer for 30 seconds and then try again. If the
fault persists, make a note of the error code (if any) and call your
supplier or authorised maintainer.
Code Beeps Test which failed
16 1-2-2-3 BIOS ROM checksum
20 1-3-1-1 DRAM refresh.
22 1-3-1-3 8742 keyboard controller
2C xxxx 1-3-4-1 RAM failure on address line xxxx.
2E xxxx 1-3-4-3 RAM failure on data bits xxxx of low byte of memory bus.
30 xxxx 1-4-1-1 RAM failure on data bits xxxx of high byte of memory bus.
46 2-1-2-3 Check ROM copyright notice
58 2-2-3-1 Test for unexpected interrupts
98 1-2 Video configuration failure, or option ROM checksum
failure. (One long, two short beeps.)