HP Surestore 6.140 Tape Library - Manual (Page 128)

Understanding Errors and Troubleshooting
Interpreting Library LEDs
Chapter 4 4-22
Table 4-6 HVDS Library Controller Card LEDs
1) Controller LED
Color Description
Flashing Green Controller needs firmware.
Yellow In the process of powering up.
Yellow flash Controller failed power-on test.
Green Ready.
2) SCSI LED
Color Description
Yellow Error; single-ended SCSI device attached.