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Chapter 7. Symptom-to-FRU index 85
No Beep symptoms
Information panel system error LED
The system error LED is turned on when an error is detected. Push the button beside
the LED display on the system board to illuminate the LEDs. If the system error LED
is on, remove the cover and check the diagnostic panel LEDs. The following is a
complete list of diagnostic panel LEDs followed by the FRU/Action for correcting the
problem. The following chart is valid only when the system error LED is on.
Note: If a diagnostic panel LED is on and the information LED panel system error
LED is off, there is probably an LED problem. Run LED diagnostics.
Notes:
1. To locate the LEDs on the system board see “System board LEDs” on page 41.
3-3-3 (No operational memory in
system)
1. Install or reseat the memory modules, then do a 3 boot reset. (See “Using
the Configuration/Setup Utility program” on page 29)
2. DIMMs
3. System Board
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
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 Symptom FRU/Action
No beep after completing POST
and the system operates
correctly.
1. System Board
No beep and no video (System
Attention LED is OFF)
1. See “Undetermined problems” on page 98
No beep and no video (System
Attention LED is ON)
1. See “Information panel system error LED”
Beep/Symptom FRU/Action