HP Surestore Tape Library Model 2/20 User Manual page 138

Table 23
136 Interpreting Library LEDs
Library Expansion Card LED (8/80 and 10/100 Series Libraries Only)
Ready LED
Color Description
Yellow Powering up, hardware
error, or card located
on an unsupported level
of the library.
Green Card is ready.
Flashing Indicates internal library
Green communication bus
activity.
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Chapter 4