No Beep Symptoms; Information Panel System Error Led - IBM Netfinity 4500R Type 8656 Hardware Maintenance Manual

No Beep symptoms

Information panel system error LED

114
Hardware Maintenance Manual: Netfinity 4500R Type 8656
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)
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
All LEDs off
(Check System Error Log
for error condition, then
clear System Error Log
when the problem is
found.)
CPU LED on
(The LED next to the failing
CPU should be on.)
1. Check speaker cables
2. Speaker
3. System Board
1. Run Configuration/Setup, set the Start Options Power-On
Status to enable.
2. Check speaker connectionl
3. 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 133
1.
See"Power supply LED errors" on page 121
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.
1. Processor 1 or 2.
FRU/Action
FRU/Action