IBM R30 Operator's Manual page 50

Status Light States
The following table explains the meaning of the green and amber status lights.
Status Lights
Off
Off
Legend:
2-30
Operator Guide
Status Lights on the 5.0GB 8 mm Tape Drive
State
On
On
On
Off
Off
Off
Off
On
Off
Off
On
Flashing
Flashing
Off
Off
On
or
Off or On
or
Off or Flashing
Disturbance
Ready
Busy
Status
The power-on self-test (POST) is running, or the
system sent a Reset signal to the 8-mm tape drive.
One of the following has occurred:
The power is off.
The POST has completed successfully, but no
tape cartridge has been inserted.
A tape cartridge has been inserted and the 8-mm
tape drive is ready to receive commands from the
system.
The tape is in motion and the 8-mm tape drive is
busy running a device operation.
The 8-mm tape drive has detected an internal fault
that requires corrective action. If this occurs, see
the following note.
The tape path requires cleaning. Refer to "Cleaning
the Tape Path on the 5.0GB 8-mm Tape Drive" on
page 2-33.
On
Off
Flashing