No-beep symptoms – IBM 6648 User Manual
Page 166
Beep Symptom
FRU/Action
3-1-X
DMA register failed
1.
System Board
3-2-4
Keyboard controller failed
1.
System Board
2.
Keyboard
3-3-4
Screen initialization failed
1.
Video Adapter (if installed)
2.
System Board
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 135
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:
Types 6058/6059/6269/6578/6579 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, do the following:
1.
Select Start Options in the Configuration/Setup Utility program
(see “Setup Utility program” on page 122).
152
Hardware Maintenance Manual: IBM NetVista Computer Types 6058, 6059, 6269, 6568, 6569, 6578, 6579, 6648,
6649