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Table 3. Light Path Diagnostics (continued)
Lit LED Cause Action
Power module
error
A critical error has occurred in the power
module.
Replace the module. If your BladeCenter unit
has a redundant module for this power module,
the BladeCenter unit continues to function
using the redundant module.
Blower module
Blower-module
error
The blower has failed or is operating too
slowly.
Replace the blower module as soon as
possible to regain cooling redundancy. The
BladeCenter unit continues to function. The
redundant blower module provides cooling to
the BladeCenter unit and blades.
I/O module
I/O module error A critical error has occurred in the I/O module. Replace the module.
Temperature error messages
Note: See Chapter 7, “Parts listing, BladeCenter Type 8677 and 1881,” on page 79 to determine which components
should be replaced by a field service technician.
Message Action
Power supply x temperature fault
1. Ensure that the system is being properly cooled; see “System
reliability considerations” on page 32.
2. Replace power supply x.
Power supply x temperature warning
1. Ensure that the system is being properly cooled; see “System
reliability considerations” on page 32.
2. Replace power supply x.
Switch x temperature fault
1. Ensure that the system is being properly cooled; see “System
reliability considerations” on page 32.
2. Replace I/O module x.
System over abbient temperature Ensure that the system is being properly cooled; see “System
reliability considerations” on page 32.
Switch x temperature fault Ensure that the system is being properly cooled; see “System
reliability considerations” on page 32.
Blower error messages
Note: See Chapter 7, “Parts listing, BladeCenter Type 8677 and 1881,” on page 79 to determine which components
should be replaced by a field service technician.
Message Action
Blower x outside recommended speed Replace blower x.
Blower x failure Replace blower x.
Blower x fault Replace blower x.
72 BladeCenter E Type 8677 and 1881: Hardware Maintenance Manual and Troubleshooting Guide