Lenovo THINKSERVER TS100 6434 - Manual (Page 50)

Hard disk drive activity LED
When this LED is flashing, it indicates that the associated hard disk drive
is in use.
System-error LED
When this amber LED is lit, it indicates that a system error has occurred.
An LED on the system board might also be lit to help isolate the error. See
Chapter 5, “Solving problems,” on page 51 for additional information.
Detailed troubleshooting information is in the Hardware Maintenance
Manual.
Note: When a PCI Express error LED and the system-error LED is lit, it
indicates that a PCI Express error has occurred. The system-error
LED will turn off when you reboot the server. When a DIMM error
LED and the system-error LED is lit, it indicates that a DIMM error
has occurred. After you correct the DIMM error, the DIMM error
LED and the system-error LED will turn off.
USB connectors
Connect USB devices to these connectors.
CD-eject or DVD-eject button
Press this button to release a CD from the CD drive or a DVD from the
DVD drive.
CD or DVD drive activity LED
When this LED is lit, it indicates that the CD drive or DVD drive is in use.
(Optional) diskette-eject button
Press this button to release a diskette from the diskette drive.
(Optional) diskette drive activity LED
When this LED is lit, it indicates that the diskette drive is in use.
Hot-swap hard disk drive activity LED (some models)
On some server models, each hot-swap drive has a hard disk drive activity
LED. When this green LED is flashing, it indicates that the associated hard
disk drive is in use.
When the drive is removed, this LED also is visible on the hard disk drive
backplane, next to the drive connector. The backplane is the printed circuit
board behind drive bays 4 through 7 (or bays 4 through 11 on some
2.5-inch hard disk drive SAS models).
Hot-swap hard disk drive status LED (some models)
On some server models, each hot-swap hard disk drive has an amber
status LED. If this amber status LED for a drive is lit, it indicates that the
associated hard disk drive has failed.
If an optional RAID controller is installed in the server and the LED
flashes slowly (one flash per second), it indicates that the drive is being
rebuilt. When the LED is flashing rapidly (three flashes per second), it
indicates that the controller is identifying the drive.
When the drive is removed, this LED also is visible on the hard disk drive
backplane, below the hot-swap hard disk drive activity LED.
36 ThinkServer TS100 Types 6431, 6432, 6433, 6434: Installation Guide