Unload Button; Single-Character Display; Single Red Dot - IBM 200 GB LTO-2 User Manual

Unload button

The unload button ( 2 in Figure 16 on page 31) enables you to perform the
following functions:
v Rewind the tape into the cartridge and eject the cartridge from the tape drive.
v Enter or exit maintenance mode, or perform diagnostic or maintenance
v Perform a panic reset of the drive. Attention: If the tape drive detected a

Single-character display

The LTO-2 features an LED ( 3 in Figure 16 on page 31) that presents a
single-character code for:
v Diagnostic or maintenance functions
v Error conditions and informational messages
Table 5 on page 36 lists each single-character code that is used for diagnostic or
maintenance functions. Table 8 on page 49 lists the codes for error conditions and
informational messages. If multiple errors occur, the code with the highest priority
(represented by the lowest number) displays first. When the error is corrected, the
code with the next highest priority displays, and so on until no errors remain.

Single red dot

The single-character display is blank during normal operation. However, if a drive
dump is present while the drive is in maintenance mode, a single red dot
illuminates on the display. To copy the dump to tape, see Function Code 5 in
Table 5 on page 36.
The red dot turns off when you obtain the dump (by using an FMR tape or a SCSI
command). If no dump is present while the drive is in maintenance mode, the
single red dot does not illuminate.
For more information, see "Removing a tape cartridge" on page 35.
functions. For more information, see "Selecting a diagnostic or maintenance
function" on page 36.
permanent error and displayed an error code, it automatically forces a drive
dump (also known as a save of the firmware trace). If you perform a panic reset
of the drive, the existing dump will be overwritten and lost. To perform a panic
reset, press and hold the unload button on the drive for 10 seconds. The drive
forces a dump and overwrites the existing dump. The drive then reboots to
allow communication.
Chapter 4. Operating the tape drive
33