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Beep/Symptom FRU/Action
Two Short Beeps
(Information only, the configuration
has changed)
1. Run Diagnostics
2. Run Configuration/Setup
Three Short Beeps
1. DIMM
2. System Board
One Continuous Beep
1. Processor
2. Optional Processor (if installed)
3. System Board
4. Service Processor Card
Repeating Short Beeps
1. Keyboard
2. System Board
One Long and One Short Beep
1. Video adapter (if present)
2. System Board
One Long and Two Short Beeps
1. Video adapter (if present)
2. System Board
Two Long and Two Short Beeps
1. Video adapter
No beep symptoms
No Beep Symptom FRU/Action
No beep and the system
operates correctly.
1. Diagnostic LED Panel
No Beeps occur after
successfully completing POST
(The Power-On Status is
disabled.)
1. Run Configuration/Setup, set the Start Options Power-On Status to
enable.
2. Diagnostic LED Panel
3. System Board
No ac power
(Power supply ac LED is off)
1. Check the power cord.
2. Power Supply (If two are installed, swap them to determine if one is
defective.)
3. Power Backplane
No beep and no video
1. See “Undetermined problems” on page 122
System will not power-up
(Power supply ac LED is on)
1. See“Power supply LED errors” on page 110
100 IBM xSeries 350 Type 8682: Hardware Maintenance Manual