IBM 201 manual POST beep codes

POST beep codes

Table 15. POST beep codes

Symptom	FRU/action
1-1-2(Processor register	Processor
test failed)
1-1-3(CMOS write/read test	1.	Battery
failed)
	2.	System board
1-1-4(BIOS EEPROM	System board
checksum failed)
1-2-1(Programmable	System board
Interval Timer failed)
1-2-2(DMA initialization	System board
failed)
1-2-3(DMA page register	System board
write/read failed)
1-2-4(RAM refresh	1.	DIMM
verification failed)
	2.	System board
1-3-1(1st 64K RAM test	DIMM
failed)
1-3-2(1st 64K RAM parity	1.	DIMM
test failed)
	2.	System board
2-1-1(Secondary DMA	System board
register failed)
2-1-2(Primary DMA register	System board
failed)
2-1-3(Primary interrupt	System board
mask register failed)
2-1-4(Secondary interrupt	System board
mask register failed)
2-2-2(Keyboard controller	1.	System board
failed)
	2.	Keyboard
2-2-3(CMOS power failure	1.	Battery
and checksum checks failed)
	2.	System board
2-2-4(CMOS configuration	1.	Battery
information validation failed)
	2.	System board
2-3-1(Screen initialization	1.	Jumper on J14
failed)
	2.	System board
2-3-2(Screen memory	System board
failed)
2-3-3(Screen retrace failed)	System board
2-3-4(Search for video	System board
ROM failed)
2-4-1(Video failed; screen	System board
believed operable)

Appendix C. Engine POST messages 89