Tyan Computer InterServe 90 manual Troubleshooting System Problems, If the computer beeps Then

Beeps	Error Message	Description
1	Refresh Failure	The memory refresh circuitry is faulty.
2	Parity Error	Parity error in the base memory (the first 64 KB block) of memory.
3	Base 64 KB Memory Failure	Memory failure in first 64 KB.
4	Timer Not Operational	A memory failure in the first 64 KB of memory, or Timer 1 is not
		functioning.
5	Processor Error	The CPU generated an error.
6	8042 - Gate A20 Failure	Cannot switch to protected mode.
7	Processor Exception Interrupt Error	The CPU on the CPU Card generated an exception interrupt.
8	Display Memory Read/Write Error	The system video adapter is either missing or its memory is faulty. This is
		not a fatal error.
9	ROM Checksum Error	The ROM checksum value does not match the value encoded in
		AMIBIOS.
10	CMOS Shutdown Register Read/Write Error	The shutdown register for CMOS RAM has failed.
11	Cache Memory Bad — Do Not Enable Cache	The cache memory test failed. Cache memory is disabled. Do not press
		<Ctrl> <Alt> <Shift> <+> to enable cache memory.
Troubleshooting System Problems

If the computer beeps...		then...
1, 2, or 3 times...	reseat the memory SIMMs or DIPs.
	If the system still beeps, replace the
	memory.
6 times...	reseat the keyboard controller chip. If
	it still beeps, replace the keyboard
	controller. If it still beeps, try a
	different keyboard, or replace the
	keyboard fuse, if there is one.
8 times...	there is a memory error on the video
	adapter. Replace the video adapter, or
	the RAM on the video adapter.
9 times...	the BIOS ROM chip is bad. The
	system probably needs a new BIOS
	ROM chip.
11 times...	reseat the cache memory on the
	motherboard. If it still beeps, replace
	the cache memory.
4, 5, 7, or 10 times...	for 5 or 7 beeps, first test with a new CPU - if that
	does not solve the problem, then motherboard must
	be replaced.

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