Table 15. EasyLED panel LEDs (continued)
LED Description Action
CPU A microprocessor has
failed.
1. Make sure that the failing microprocessor,
which is indicated by a lit LED on the
system board, is install correctly.
2. (Trained service technician only) Replace
the microprocessor.
DASD A hard disk drive error has
occurred.
1. Check the LEDs on the hard disk drives and
replace the hard disk drive with the lit LED.
2. Replace the hard disk drive backplane.
RAID A RAID controller error
has occurred.
1. Make sure that a RAID controller is installed
correctly.
2. Check the system-error log for information
about the error.
BRD An error has occurred on
the system board.
1. Check the LEDs on the system board to
identify the component that caused the error.
2. Check the system-error log for information
about the error.
Power-supply diagnostics
The following illustration shows the power-supply LEDs on the rear of the server.
For more information about solving power-supply problems, see the Hardware
Maintenance Manual.
1 AC power LED (green)
2 DC power LED (green)
3 Power-supply error LED (amber)
The following table describes the problems that are indicated by various
combinations of the power-supply LEDs and the power-on LED on the operator
information panel and suggested actions to correct the detected problems.
148 ThinkServer RD220 Types 3729, 3779, 3797, and 3798: Installation and User Guide
