IBM System x3550 M3 Type 4254 Problem Determination And Service Guide

Table 6. IMM error messages
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 4, “Parts listing, System x3550 M3 Types 4254 and 7944,” on page 159 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.
Message Severity Description Action
Numeric sensor Ambient Temp going
high (upper critical) has asserted.
Error An upper critical sensor
going high has asserted.
1. Reduce the ambient
temperature.
2. Check the server
airflow. Make sure that
nothing is blocking the
air from coming into or
preventing the air from
exiting the server.
Numeric sensor Ambient Temp going
high (upper non-recoverable) has
asserted.
Error An upper nonrecoverable
sensor going high has
asserted.
1. Reduce the ambient
temperature.
2. Check the server
airflow. Make sure that
nothing is blocking the
air from coming into or
preventing the air from
exiting the server.
Numeric sensor Planar 3.3V going low
(lower critical) has asserted.
Error A lower critical sensor
going low has asserted.
(Trained service technician
only) Replace the system
board.
Numeric sensor Planar 3.3V going high
(upper critical) has asserted.
Error An upper critical sensor
going high has asserted.
(Trained service technician
only) Replace the system
board.
Numeric sensor Planar 5V going low
(lower critical) has asserted.
Error A lower critical sensor
going low has asserted.
(Trained service technician
only) Replace the system
board.
Numeric sensor Planar 5V going high
(upper critical) has asserted.
Error An upper critical sensor
going high has asserted.
(Trained service technician
only) Replace the system
board.
Numeric sensor Planar VBAT going low
(lower critical) has asserted.
Error A lower critical sensor
going low has asserted.
Replace the 3 V battery.
Numeric sensor Fan n A Tach going low
(lower critical) has asserted.
(n = fan number)
Error A lower critical sensor
going low has asserted.
1. Reseat the failing fan
n, which is indicated by
a lit LED near the fan
connector on the
system board.
2. Replace the failing fan.
(n = fan number)
Chapter 3. Diagnostics 39

IBM System x3550 M3 Type 4254 Specifications

General

Processor	Intel Xeon 5600 series
Max Processors	2
Memory	Up to 192 GB DDR3
Form Factor	1U Rack
Chipset	Intel 5520
Drive Bays	Up to 4 hot-swap 2.5-inch SAS/SATA or SSD
RAID Support	RAID 0, 1, 10
Network Interface	Dual-port Gigabit Ethernet
Power Supply	460W or 675W
Expansion Slots	2 PCIe 2.0
Weight	Approximately 17.24 kg (38 lbs)
Memory Slots	18 (RDIMM) or 12 (UDIMM)