IBM 8668 Hardware Maintenance Manual - Page 117

No Beep symptoms, Diagnostic Panel LED, Run Configuration/Setup

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Beep/Symptom 4-4-4 (Optional system management adapter not installed in slot 1 or not functioning correctly) Two Short Beeps (Information only, the configuration has changed) Three Short Beeps One Continuous Beep Repeating Short Beeps One Long and One Short Beep One Long and Two Short Beeps Two Long and Two Short Beeps FRU/Action 1. Verify that adapter is installed in slot 1. 2. Adapter 3. System Board 1. Run Diagnostics 2. Run Configuration/Setup 1. DIMM 2. System Board 1. Processor 2. Optional Processor (if installed) 3. System Board 1. Keyboard 1. Video adapter (if present) 2. System Board 1. Video adapter (if present) 2. System Board 1. Video adapter No Beep symptoms No Beep Symptom No beep and the system operates correctly. No Beeps occur after successfully completing POST (The Power-On Status is disabled.) No ac power (Power supply ac LED is off) No beep and no video System will not power-up (Power supply ac LED is on) FRU/Action 1. System Board 1. Run Configuration/Setup, set the Start Options Power-On Status to enable. 2. System Board 1. Check the power cord. 2. Power Supply (If two are installed, swap them to determine if one is defective.) 3. Power Backplane 4. Hot-Swap Power AC Inlet Box 1. See "Undetermined Problems" on page 126 1. See"Power supply LED errors" on page 116 Diagnostic Panel LED Diagnostic Panel LED FRU/Action MEM LED on (The LED next to the failing DIMM is on.) 1. Processor/PCI Board. 2. Failing DIMM in slot J1-J4. CPU LED on (The LED next to the 1. Processor 1 or 2. failing CPU should be on.) 2. System Board Symptom-to-FRU index 109

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Beep/Symptom
FRU/Action
4-4-4
(Optional system management
adapter not installed in slot 1 or not
functioning correctly)
1.
Verify that adapter is installed in slot 1.
2.
Adapter
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
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.
System Board
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.
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
4.
Hot-Swap Power AC Inlet Box
No beep and no video
1.
See “Undetermined Problems” on page 126
System will not power-up
(Power supply ac LED is on)
1.
See“Power supply LED errors” on page 116
Diagnostic Panel LED
Diagnostic Panel LED
FRU/Action
MEM LED on
(The LED next to
the failing DIMM is on.)
1.
Processor/PCI Board.
2.
Failing DIMM in slot J1-J4.
CPU LED on
(The LED next to the
failing CPU should be on.)
1.
Processor 1 or 2.
2.
System Board
Symptom-to-FRU index
109