HP Surestore 6.140 Tape Library - Manual (Page 129)

Understanding Errors and Troubleshooting
Interpreting Library LEDs
Chapter 4 4-23
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Table 4-7 LVDS 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
Green No bus connected or low-voltage
differential SCSI bus connected.
Flashing Green Single-ended SCSI bus attached. SCSI
performance reduced.
Yellow High-voltage differential SCSI bus
connected. Configuration error.