IBM Beep Codes

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Welcome To Internet Marketing Support | Code Description

1 brusk beep System is OK
2 brusk beeps POST Error - fault code shown on enshroud No beep Power render or organisation board occupation Continuous beep Power supply, organisation board, or keyboard occupation Repeating brusk beeps Power render or organisation board problem
1 long, i brusk beep System board problem
1 long, two brusk beeps Display adapter occupation (MDA, CGA)
1 long, iii brusk beeps Display adapter occupation (EGA)
3 long beeps 3270 keyboard card

IBM POST Diagnostic Code Descriptions
Code Description
100 - 199 System Board
200 - 299 Memory
300 - 399 Keyboard
400 - 499 Monochrome Display
500 - 599 Colour/Graphics Display
600 - 699 Floppy-disk crusade and/or Adapter
700 - 799 Math Coprocessor
900 - 999 Parallel Printer Port
1000 - 1099 Alternate Printer Adapter
1100 - 1299 Asynchronous Communication Device, Adapter, or Port
1300 - 1399 Game Port
1400 - 1499 Colour/Graphics Printer
1500 - 1599 Synchronous Communication Device, Adapter, or Port
1700 - 1799 Hard Drive and/or Adapter
1800 - 1899 Expansion Unit (XT)
2000 - 2199 Bisynchronous Communication Adapter
2400 - 2599 EGA system-board Video (MCA)
3000 - 3199 LAN Adapter
4800 - 4999 Internal Modem
7000 - 7099 Phoenix BIOS Chips
7300 - 7399 3.5" Disk Drive
8900 - 8999 MIDI Adapter
11200 - 11299 SCSI Adapter
21000 - 21099 SCSI Fixed Disk together with Controller
21500 - 21599 SCSI CD-ROM System