IBM 201 - Manual (Page 101)

POST beep codes
Table 15. POST beep codes
Symptom FRU/action
1-1-2 (Processor register
test failed) Processor
1-1-3 (CMOS write/read test
failed)
1. Battery
2. System board
1-1-4 (BIOS EEPROM
checksum failed) System board
1-2-1 (Programmable
Interval Timer failed) System board
1-2-2 (DMA initialization
failed) System board
1-2-3 (DMA page register
write/read failed) System board
1-2-4 (RAM refresh
verification failed)
1. DIMM
2. System board
1-3-1 (1st 64K RAM test
failed) DIMM
1-3-2 (1st 64K RAM parity
test failed)
1. DIMM
2. System board
2-1-1 (Secondary DMA
register failed) System board
2-1-2 (Primary DMA register
failed) System board
2-1-3 (Primary interrupt
mask register failed) System board
2-1-4 (Secondary interrupt
mask register failed) System board
2-2-2 (Keyboard controller
failed)
1. System board
2. Keyboard
2-2-3 (CMOS power failure
and checksum checks failed)
1. Battery
2. System board
2-2-4 (CMOS configuration
information validation failed)
1. Battery
2. System board
2-3-1 (Screen initialization
failed)
1. Jumper on J14
2. System board
2-3-2 (Screen memory
failed) System board
2-3-3 (Screen retrace failed) System board
2-3-4 (Search for video
ROM failed) System board
2-4-1 (Video failed; screen
believed operable) System board
Appendix C. Engine POST messages 89