become illuminated. The error code will remain on the Operator Control Panel
until a push button is pressed, which will cause the Operator Control Panel to
return to the Home Screen.

v Numeric error codes are only used for unrecoverable, fatal errors, otherwise text

status messages are displayed.

Power-ON Display
When the library powers ON or resets, it goes through several internally controlled
processes that allow it to get initialized and running. These processes are called
Power-On-Self-Test (POST). During the POST the Operator Control Panel will
display information that may be meaningless until POST is complete. When the
POST is finished, the library will display the current library status in the Home
Screen.
While the library is going through its power up cycle the user can monitor the
state of the library via the OCP; however, the user will not be able to make any
configuration changes until the unit has completed its initialization routine.
Attempts to make changes will be ignored.
Note about the Front Panel LEDs
All LEDs are updated during power ON and reset sequences. Upon power ON or
software reset, the library will illuminate all LEDs as soon as POST allows. When
initialization starts, all LEDs will be extinguished and the Ready/Activity LED will
flash at a rate of approximately one second per cycle. When the mechanical
initialization is complete, the Ready/Activity LED will stop flashing and be
constantly illuminated.
If a library failure occurs, the Ready/Activity LED will turn OFF and the Error
LED will illuminate. The Operator Control Panel will also display an appropriate
error code to help identify the failure.
The following are additional operational details of LEDs:

v The Ready/Activity LED will be lit any time the unit is powered ON and

functional. The Ready/Activity LED will blink whenever there is library or drive
activity. This LED will also blink when the unit is OFFLINE.
Firmware Rev: 120R
Drive: 1
Magazines: 2
I/O Station: empty
Accessor Drive 1 2
Idle Random
Idle Rand
Startup
TL4000
a77ug187
Figure 2-1. Power-ON Screens
2-2 Dell PowerVault TL2000 Tape Library and TL4000 Tap e Library User's Guide