LTO Tape Drive User’s Guide
2 - Tape Drive Operation
10400934-001
©2020 Overland-Tandberg
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Chapter 4, “Maintenance,” on page 47
single-character codes that represent diagnostic or maintenance functions. To initiate a
function, the unit must be in Maintenance mode. The SCD is blank during normal operation.
SCD Dot
If a drive memory dump is present while the drive is in Maintenance mode, a single dot
illuminates in the lower right corner of the SCD (see Callout 6 in
). To copy the memory dump, see
“Function Code 5: Copy Drive Dump” on
.
The SCD dot is on solid if the memory dump is in RAM memory. The SCD dot flashes if the
memory dump is in flash memory.
The SCD dot turns off when you obtain a dump (by using ITDT or a SCSI command) or update
the drive firmware.
NOTE: If the drive memory dump is stored in RAM memory (SCD dot on solid), the memory dump is
lost when you turn OFF the power or reset the drive.
Error Codes
The drive indicates an error by displaying an error code. The error and informational codes
indicated by the SCD are set and cleared as indicated in priority (lowest number) displays.
The code numbers are listed in priority order, from highest to lowest. If multiple error
conditions occur, the code with the highest priority (lowest number) displays.
Refer to the
“Error Codes Table” on page 62
for a table showing the error codes and
definitions.
Front Panel Operations
Maintenance operations can be performed using the Eject button while observing the status
LED and the SCD.
Maintenance Mode
While in Maintenance mode, the drive indicates the maintenance or diagnostic function that is
to be executed by displaying one of the codes shown in the table of Maintenance Codes.
Enter Maintenance Mode
To enter Maintenance mode (if the drive is not already in Maintenance mode and no cartridge
is loaded), press the Eject button three times within two second. While the drive is in
Maintenance mode, the status LED is illuminated solid amber and the operator may perform
maintenance or diagnostic functions. In Maintenance mode, the tape drive is offline to SCSI
commands.
NOTE: If a tape is loaded, the Eject button is interpreted as an eject request. The drive cannot be put
into Maintenance mode while a tape is loaded.
Scroll through Maintenance Options
If the drive is in Maintenance mode, when the Eject button is pressed at a rate greater than
once per second, the SCD code increments by one each time the Eject button is pressed.
