Chapter 5
Troubleshooting
Troubleshooting and FRU identification
80
Troubleshooting and FRU identification
Once you have determined the current system state, you must troubleshoot the system to determine what the
problem symptoms are and what repair actions to take.
Use this guide to assist you in repairing the system by matching the problem symptom with the appropriate
troubleshooting step.
Table 5-1 Problem Symptoms Repair Actions
Problem or
Symptom
Problem
Indicators
Normal
Functioning
Indicators
Troubleshooting Steps Potential FRUs
No indication of
housekeeping
voltage present
when AC is
connected and
power switch is
in the off
position.
• Standby
LED is off
when AC is
plugged into
system.
• BMC
“heartbeat”
not flashing.
• Power LED Off.
• Power LED on
MP board (if
installed) should
be lit solid green.
• Standby LED
on system board
is on steady.
• BMC
“heartbeat” LED
on system board
is flashing.(if
installed) should
be lit solid green.
1. AC must be present. Check
that PDU is plugged in.
2. Ensure there is a working
power supply. The LED on the
supply should be lit.
3. Check for an EFI shell
prompt (
CTRL+B) at console.
• No AC present
• Power supply
• Power
distribution
• System board
• Display board
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