HP Surestore 6.140 Tape Library - Manual (Page 126)

Understanding Errors and Troubleshooting
Interpreting Library LEDs
Chapter 4 4-20
Table 4-4 Library Expansion Card LED
Ready LED
Color Description
Yellow Powering up, hardware error,
or card located on an
unsupported level of the
library.
Green Card is ready.
Flashing
Green Indicates internal library
communication bus activity.
Off Power has been lost on level 1,
or there is a hardware error on
the library expansion card.