IBM 2254 Hardware Maintenance Manual page 100

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IBM : Hardware Maintenance Manual
Beep Symptom
3-4-1
Screen retrace test detected an error
3-4-2
POST is searching for video ROM
4
All other beep code sequences
One long and one short beep during POST.
Base 640 KB memory error or shadow RAM
error
One long beep and two or three short beeps
during POST.
(Video error)
Three short beeps during POST
Continuous beep
Repeating short beeps
FRU/Action
1. Video Adapter (if installed)
2. System Board
3. Display
1. Video Adapter (if installed)
2. System Board
1. Video Adapter (if installed)
2. System Board
1. System Board
1. Memory Module
2. System Board
1. Video Adapter (if installed)
2. System Board
1. System Board Memory
2. System Board
1. System Board
1. Keyboard stuck key?
2. Keyboard Cable
3. System Board