IBM A40 TYPE 6840, Hardware Maintenance Manual

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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
v
One beep
v
A pause (or break)
v
Two beeps
v A pause (or break)
v Any number of breaks
4 Four continuous beeps
Use the following table to diagnose beep symptoms.
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. Memory Module
2. 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
Chapter 6. Symptom-to-FRU Index
57