IBM 6866 Personal Computer User Manual


 
Beep symptoms
Beep symptoms are short tones or a series of short tones
separated by pauses (intervals without sound). See the
following examples.
Beeps Description
1-2-X One Beep
A pause (or break)
Two beeps
A pause (or break)
Any number of beeps
4 Four continuous beeps
Beep Symptom FRU/Action
1-1-3
CMOS read/write error
1. Run Setup
2. System Board
1-1-4
ROM BIOS check error
1. System Board
1-2-X
DMA error
1. System Board
1-3-X 1. RIMM Memory
Module
see“System board
memory” on page 59
2. C-RIMM
3. System Board
1-4-4 1. Keyboard
2. System Board
1-4-X
Error detected in first 64 KB
of RAM.
1. Memory Module
2. System Board
2-1-1, 2-1-2 1. Run Setup
2. System Board
2-1-X
First 64 KB of RAM failed.
1. Memory Module
2. System Board
2-2-2 1. Video Adapter
(if installed)
2. System Board
2-2-X
First 64 KB of RAM failed.
1. Memory Module
2. System Board
2-3-X 1. Memory Module
2. System Board
2-4-X 1. Run Setup
2. Memory Module
3. System Board
3-1-X
DMA register failed.
1. System Board
3-2-4
Keyboard controller failed.
1. System Board
2. Keyboard
PC 300 - 6584/6594 83