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v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See Chapter 7, “Parts listing, ThinkServer RD220 Type 3729, 3779, 3797, and 3798,” on page 231 to
determine which components are customer replaceable units (CRU) and which components are field
replaceable units (FRU).
v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
System event/error log message Action
Power supply n AC power removed
n = the power supply number
1. Make sure that the power cords are correctly connected to the
server and to a working power source.
2. Replace power supply n.
3. Replace the power backplane.
Power supply n fan fault
n = the power supply number
1. Make sure that there are no obstructions, such as bundled
cables, to the airflow on the power-supply fan.
2. Replace power supply n.
Power supply current exceeded max spec value
1. Make sure that two power supplies are installed, and that the
power cords are correctly connected to the power supplies and
to a working power source.
2. Replace the power backplane.
Front panel NMI
1. If the MEM LED on the light path diagnostics panel is lit,
complete the following steps:
a. Check the other system logs for related entries and actions.
b. Reinstall the server device drivers.
c. Reinstall the operating system.
2. If the error LED for PCI slot 1 or PCI slot 2 on the riser card is
lit, complete the following steps:
a. Remove the adapter from the PCI slot that has the lit error
LED.
b. If the error continues, replace the riser-card assembly.
c. (Trained service technician only) If the error continues,
replace the system board.
3. If the error LED for PCI slot 3 or PCI slot 4 on the system
board is lit, complete the following steps:
a. Remove the adapter from the PCI slot that has the lit error
LED.
b. (Trained service technician only) If the error continues,
replace the system board.
4. Remove all PCI adapters from the server. (Trained service
technician only) If the error continues, replace the system
board.
Software NMI Information only
CPU n IERR detected, the system has been
restarted
n = the microprocessor number
1. Make sure that you have installed the latest levels of firmware
and device drivers for all adapters and standard devices, such
as Ethernet, SCSI, or SAS.
2. Run the diagnostics programs for the hard disk drives and
other I/O devices.
3. (Trained service technician only) Replace microprocessor n.
Chapter 5. Diagnostics 141