Single-character display (SCD)

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The single-character display (SCD) is found on the front panel of the tape drive. The codes that are displayed provide information about drive status.

The SCD ( 5  in Front panels of the drives) presents a single-character code for:
  • Error conditions and informational messages
  • Diagnostic or maintenance functions (while in maintenance mode only)
Error codes and messages 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 until no errors remain.

Diagnostic and maintenance functions lists the 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  6  in Front panels of the drives). To copy the memory dump, see Function code 5: Copy drive dump.

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.