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1. The library manager checks the status of the interface to the cartridge accessor.
If it is not available, a pop-up window is displayed indicating the cartridge
accessor interface is unavailable. The operator can cancel the request to Auto
mode.
2. The library manager checks the cartridge accessor status. If it is not available
because of a previous failure, the accessor is tested to see if it can be made
available. If it can be made available, the transition to automatic is attempted. If
a hardware problem is detected, the library returns to Pause and a pop-up
window indicates the cartridge accessor is unavailable. The operator can cancel
the request to Auto mode.
3. The library manager checks the power status of the cartridge accessor. If power
is not on, a pop-up window indicates the fault and prompts the operator to
ensure all safety interlocks are closed.
4. If the high availability model is installed, the library manager determines which
accessor is to be the active accessor based on the previous state. If both are
available, the preferred accessor is the local accessor. If both are not available,
a pop-up window is displayed. The operator can cancel the request to auto
mode.
5. The Pause Mode pop-up window is closed.
6. The Auto LED on the operator panel flashes until the transition is complete and
then stays lit. The Auto Pending pop-up window indicates that the library is
changing from Pause mode to Auto mode ( Figure 33). Emergency Motion Off
recovery is in progress will appear in the pop-up window for a short time
during this transition. When emergency motion off recovery is complete, the
pop-up window closes.
7. The 3494 enters Auto mode.
8. An attention message is sent to all attached hosts indicating that the state of the
library has changed.
Auto Mode to Pause Mode (No Error)
A request to enter Pause mode can be performed by the operator at the operator
panel (see “Changing to Pause Mode” on page 76) or by using the library manager.
However the request is generated, the status of the 3494 is checked.
When a request to enter Pause mode is started using the library manager, the
following actions occur during the change from the Auto mode to the Pause mode:
1. The Pause Pending pop-up window is displayed indicating that the change to
Pause mode is in progress and that the cartridge accessor is being parked. The
Pause LED on the operator panel flashes until the transition is complete and
then stays lit. The border of the Pause Pending pop-up window alternates
Figure 33. Auto Pending Pop-Up Window
Chapter 4. Operational Modes and States, and Informational States 69