IBM 6866 Personal Computer User Manual


 
Beep Symptom FRU/Action
3-3-4
Screen initialization failed.
1. Video Adapter
(if installed)
2. System Board
3. Display
3-4-1
Screen retrace test detected
an error.
1. Video Adapter
(if installed)
2. System Board
3. Display
3-4-2
POST is searching for video
ROM.
1. Video Adapter
(if installed)
2. System Board
4 1. Video Adapter
(if installed)
2. System Board
All other beep code
sequences.
1. System Board
One long and one short
beep during POST.
Base 640 KB memory error
or shadow RAM error.
1. Memory Module
2. System Board
One long beep and two or
three short beeps during
POST.
(Video error)
1. Video Adapter
(if installed)
2. System Board
Three short beeps during
POST.
1. See “System board
memory” on page 59.
2. System Board
Continuous beep. 1. System Board
Repeating short beeps. 1. Keyboard stuck key?
2. Keyboard Cable
3. System Board
No beep symptoms
Note
Type 6584/6594 computers default to come up quiet
(No beep and no memory count and checkpoint code
display) when no errors are detected by POST.
To enable Beep and memory count and checkpoint
code display when a successful POST occurs:
Enable Power on Status in setup. See “Setup
Utility program” on page 41.
Symptom/Error FRU/Action
No beep during POST but
computer works correctly.
1. System Board
84 IBM PC 300/IntelliStation Vol 3 HMM