IBM 4500R Hardware Maintenance Manual - Page 122
No Beep symptoms, Information panel system error LED, Run Configuration/Setup
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No Beep symptoms No Beep Symptom FRU/Action No beep and the system 1. Check speaker cables operates correctly. 2. Speaker 3. System Board No Beeps occur after 1. Run Configuration/Setup, set the Start Options Power-On successfully completing Status to enable. POST (The Power-On Status is 2. Check speaker connectionl disabled.) 3. System Board No ac power 1. Check the power cord. (Power supply ac LED is off) 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 133 System will not power- 1. See"Power supply LED errors" on page 121 up (Power supply ac LED is on) Information panel system error LED The system error LED is turned 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 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 LED locations" on page 44. 2. Check the System Error Log for additional information before replacing a FRU. 3. The DIMM error LEDs, processor error LEDs, and VRM error LEDs turn off when the system is powered down. Diagnostic Panel LED FRU/Action All LEDs off (Check System Error Log for error condition, then clear System Error Log when the problem is found.) 1. System Error Log is 75% full; clear the log. 2. PFA alert; check Netfinity log for failure; clear PFA alert; remove AC power for at least 20 seconds, reconnect, then power up system. 3. Run Information Panel diagnostics. CPU LED on 1. Processor 1 or 2. (The LED next to the failing CPU should be on.) 114 Hardware Maintenance Manual: Netfinity 4500R Type 8656