IBM 866011U Hardware Maintenance Manual - Page 275

No beep symptoms No Beep Symptom No beep and the system operates correctly. 1. Check speaker cables 2. Speaker 3. System Board 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. Run Configuration/Setup, set the Start Options Power-On Status to enable. 2. Check speaker connection. 3. Speaker 4. 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 291. 1. See "Power supply LED errors" on page 278. Control panel system error LED The system error LED is turned on on when an error is detected. 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 replacing the problem. Notes 1. To locate the LEDs on the processor board see "Processor board component locations" on page 227. 2. To locate the LEDs on the system board see "System board component locations" on page 255. 3. Check the system error log for additional information before replacing a FRU. Diagnostic Panel LED CPU LED on (The LED next to the failing CPU is on.) FRU/Action 1. Processor 1 or 2 on (Processor 1 or 2). 2. Processor Board Netfinity 5500 - Type 8660 267