No-Beep Symptoms - IBM A40I TYPE 2271 Hardware Maintenance Manual

No-beep symptoms

58
Hardware Maintenance Manual A40 Type 6840 A40P Type 6841 A40i Type 2271: IBM NetVista Computer
Beep Symptom
3-3-4
Screen initialization failed
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
Important:
Type 2271/6840/6841 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 7).
2. Set Power-On Self-Test to Enhanced.
Symptom/Error
No beep during POST but computer works
correctly.
FRU/Action
1. Video Adapter (if installed)
2. System Board
Display
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. See "System board memory" on page
30.
2. System Board
1. System Board
1. Keyboard stuck key?
2. Keyboard Cable
3. System Board
FRU/Action
1. System Board