FIC Troubleshooting and Repair, Beep codes for system board errors, FIC A360 Service Manual

Troubleshooting and Repair

range includes a location which when added to sum of the ranges, will produce a known result, such as zero.

Beep codes for system board errors

Table 6-3 (a) BIOS Beep Codes

Beep	Diagnostic	Description	Test Performed
Code	Code
none	01h	CPU registers test in	Pattern test of most of the 16-bit CPU
		progress or failure	registers. Failure will result in a system
			halt.
1-1-3	02h	CMOS write/read test in	Rolling ones test in the shutdown byte
		progress or failure.	(offset 0Eh) of the CMOS RAM. Failure
			will result in a system halt.
1-1-4	03h	ROM BIOS checksum test in	The range of ROM that includes the
		progress or failure.	BIOS is checksummed. Failure will result
			in a system halt.
1-2-1	04h	Programmable interval timer	Over a period of time, the current count
		0 test in progress or failure.	values in timer 0 are read and
			accumulated by ORing them into the
			values read so far. It is expected that
			during the time period, all bits will be set.
			Failure will result in a system halt.
1-2-2	05h	DMA channel 0 address and	Rolling ones and rolling zeros test of the
		count register test in progress	address and count registers of DMA
		or failure.	channel 0. Failure will result in a system
			halt.
1-2-3	06h	DMA page register write/read	Pattern test of DMA page registers.
		test in progress of failure.	Failure will result in a system halt.
1-3-1	08h	RAM refresh verification test	Over a period of time, the refresh bit (bit
		in progress or failure.	4) in port 60h is read and tested. The
			refresh bit should toggle from 0 to 1, then
			1 to 0 within the time period. Failure will
			result in system halt.
none	09h	First 64K RAM test in	No specific test is performed - just
		progress.	indicates that the test is beginning.
1-3-3	0Ah	First 64K RAM chip or data	The first 64K of RAM is tested with a
		line failure, multi-bit.	rolling ones test and a pattern test. If any
			of the pattern tests fail, then the BIOS
			reports that multiple data bits failure.
			Failure results in a system halt.
1-4-2	0Dh	Parity failure first 64K RAM	At the completion of the rolling ones and
			pattern tests of the first 64K, the BIOS
			checks the parity error bits (bits 7 and 6)
			of port 60h. Failure results in a system
			halt.

FIC A360 Service Manual 6-5