IBM x 340 Series, Hardware Maintenance Manual

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Hardware Maintenance Manual: xSeries 340 Model 6RY
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 (The LED
next to the failing CPU should be
on.)
1. Processor 1 or 2.
VRM LED on (The
LED next to the failing VRM
should be on.)
1. Voltage regulator module indicated by the VRM LED on the system board
that is turned on.
2. Processor indicated by the Processor LED.
DASD LED on (The LED
located next to the drive bay that
the failing drive is installed in will
be turned on.)
1. Failing drive.
2. Be sure the fans are operating correctly and the air flow is good.
3. SCSI Backplane.
FAN LED on 1. Check individual fan LEDs.
2. Replace respective fan.
3. Fan Cable.
4. System Board.
5. Power Backplane Board.
MEM LED on (The LED next to
the failing DIMM is on.)
1. DIMM.
2. Failing DIMM in slot J1-J4.
NMI LED on 1. Reboot the system.
2. Check the System Error Log.
PCI A LED on 1. PCI Card in slot 5.
2. Remove all PCI adapters from slots 1-5.
3. System Board.
PCI B LED on 1. Card in slots 3-5.
2. Remove all PCI adapters from slots 1-5.
3. System Board.