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, and so on 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
SCD Dot
If a drive memory dump is present while the drive is in maintenance mode, a single amber dot illuminates in the lower right
corner of the SCD. 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.
Status LEDs
The Status LEDs (2 and 3 in Figure 1) provide information about the state of the drive. The Ready status LED is green and the
Fault status LED is amber, and (when lit) solid or flashing.
Table 1. Status LED Combinations
Mode SCD Ready LED (green) Fault LED (amber)
Operational Blank On Off
Activity (tape movement) in Operational Mode Blank Flashing Off
Maintenance Solid character Off On
Executing Maintenance Selection Flashing character Off On
Error Condition Solid character Off Flashing
Power-On / Reset Initialization random segments Off On
Table 2 lists the conditions of the Status LEDs and Single-character Display (SCD) and provides an explanation of what each
condition means.
Table 2. Meaning of Status LEDs and Single-character Display (SCD)
If the green
Ready Status
LED is...
and the amber
Fault status
LED is...
and the SCD is...
and the SCD
Dot is...
Meaning
Off Off Off Off The drive has no power or is powered off.
Green/ Solid Off Off Off The drive is powered on and in an idle state.
Flashing Green
(once per
second)
Off Off Off The 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.
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