IBM T400 Meaning of Status Light Activity, Color and Condition, Green/Solid, Green/Flashing

Status Light

The status light ( in Figure 9 on page 31) is a light-emitting diode (LED) that provides information about the state of the Ultrium 2 Tape Drive. The light can be green or amber, and (when lit) solid or flashing. Table 8 lists the conditions of the status light and provides an explanation of what each condition means.

Table 8. Meaning of Status Light Activity
Color and Condition	Meaning
of Status Light
Off	The tape drive has no power or is powered off.
Green/Solid	The tape drive is powered on and is idle.
Green/Flashing	The tape drive is reading from the tape, writing to the tape,
	rewinding the tape, locating data on the tape, loading the tape, or
	unloading the tape.
	The status light also flashes green if the tape drive contains a
	cartridge during the power-on cycle. In this case, the drive
	completes POST and slowly rewinds the tape (the process may
	take approximately 13 minutes). The light stops blinking and
	becomes solid when the drive completes the recovery and is ready
	for a read or write operation. To eject the cartridge, press the
	unload button.
Amber/Solid	The tape drive is powering on, is resetting, or is in maintenance
	mode. For information about the functions that are available when
	the drive is in maintenance mode, see “Selecting a Diagnostic or
	Maintenance Function” on page 36.
Amber/Flashing	One of the following applies:
	v If the light flashes once per second, an error occurred and the
	tape drive or media may require service. Note the code on the
	single-character display, then go to Table 15 on page 67 to
	determine the action that is required. If a solid C appears in the
	single-character display, the drive needs cleaning.
	v If the light flashes twice per second, the tape drive is updating
	firmware. For more information, see “Updating the Firmware” on
	page 45.
	v If the light flashes once per second, the tape drive is updating
	firmware. For more information, see “Updating the Firmware” on
	page 45.
	v If the light flashes twice per second, the tape drive detected an
	error and is performing a firmware recovery. It resets
	automatically.

32IBM TotalStorage LTO Ultrium 2 Tape Drive