8.
Maintainability
8.1
Mean Time to Repair
The Mean Time To Repair (MTTR) shall not exceed 30 minutes. The MTTR is the
average time for an adequately trained and equipped technician to diagnose and
correct a malfunction while following the service procedures in the Technical Service
Manual. Servicing will be limited to replacing major subassemblies and printed circuit
board assemblies (PCBAs). Repair time does not include system retest time. All repair
procedures may be performed while the RLS remains installed in a standard 19"
equipment rack with adequate front and rear access.
8.2
Preventive Maintenance
Preventive maintenance required by the RLS consists of periodically cleaning or
replacing the air filter, which is located in each storage matrix. The RLS keeps track
of its power-on hours in order to periodically remind the user to replace the filter. The
replacement interval can be changed to match the local environmental conditions.
Gripper pads must be cleaned periodically as needed.
8.3
Automated Tape Drive Cleaning
The user can specify a location where a cleaning cartridge can be stored for each tape
drive. Any number of cleaning cartridge locations from none up to the number of
drives may be specified, but each drive can have only one location.
A menu command allows the user to specify a drive to be cleaned. If the drive is
empty, the RLS will move the predetermined cleaning cartridge to the drive. When
the drive ejects the cartridge, the unit will return it to its original location.
8.4
Adjustments
The RLS does not require electrical or mechanical adjustments after any field
replaceable unit (FRU) or tape drive is replaced. All adjustments, alignments and
calibrations are performed automatically.
511002
Rev
07-01-19
Maintainability
8-1
