Reliability MANUAL CARTRIDGE UNLOAD Super DLT1 Presented By Quantum Technical Services

Reliability Overview Understand why & how tapes get stuck Considerations Tape removal Detached leader Rewinding: when and how How It All Fits Together

Reliability Tools 5lbs. Torque driver Driver bits: #8 Torx, #2 Phillips Slotted Screwdriver ESD ground strap 9Volt battery Finger Cots or Latex Gloves Tweezers Non-contaminating probe Alcohol wipes

Reliability Drive Handling Reduce Damage to the drive –Take proper ElectroStatic Discharge (ESD) precautions. –Do not handle the drive without ESD protection/grounding. –Ensure that proper tools are used Reduce Contamination –Latex gloves or finger cots to prevent contamination. –Use alcohol wipes to clean leader

Reliability Causes Of A Stuck Tape Faulty unload button –Try SCSI unload/eject command Detached leader Improper or no SCSI bus termination Another device on the bus was powered off Misalignment, Post-it or other label attached Wrong type of cartridge inserted (rare) –DLTtape III/IIIXT or Cleaning Tape III

Reliability Troubleshoot First Verify that the drive or bus is properly terminated –Termination matches bus? Drive has good power? –Tried other sources (if possible)? If other devices on the bus, are they powered on? –Were any devices powered off on an active bus? SCSI device/bus reset & eject command attempted? Device has been powered off and on?

Reliability DRIVE DISASSEMBLY

Reliability Table Top Cover Removal Ensure that power is off and/or disconnected –Take proper ESD precautions Tool(s) –Phillips or Torx (it may vary) Cover screws are located on the bottom –Generally Phillips head screws –Rotate counterclockwise direction Cover slides towards the rear of drive

Reliability Bezel Removal Tools –You will need a flat head screwdriver –A little patience Care must be used in unlatching the clips –Don’t apply too much pressure –The clips are delicate Start from the bottom sides –Do the bottom clips first –Work upwards –Slowly pivot the bezel outward from the bottom –It should not be necessary to depress the top clips

Reliability Chassis Cover Removal There are three T8 Torx screws –One screw on each side of the chassis (excluding the front) –5lbs. of torque is used to fasten these screws After removing the screws, grab the front of the cover and pivot cover back towards the rear –You cannot pull the chassis cover straight up. –The rear screw retainer is not flush with the rear

Reliability CARTRIDGE REMOVAL

Reliability Inspect Drive & Tape Leader Visually inspect and determine the drive’s condition –Is there tape on the take-up reel? –Is tape fully rewound? –Is take-up reel leader still attached? –What is the position of the buckling arm? Purpose: determine first course of action –Proceed to eject tape –Destroy tape, rewind, attach leader, etc.

Reliability If Tape Is On Take-up Reel Destroying the tape is recommended –It limits the potential for damage to the heads –If there is resistance, explain the risk of head damage –Reattaching a leader is less invasive to the head –Point out the head shield for protection from the leader A manual tape rewind is to be used only in an emergency situation. –There must be a critical business need –For instance, the data on the tape is unique

Reliability Manual Tape Ejection Tool –Fresh 9V Battery Considerations – Ensure power is off and power connector is unplugged  Never apply battery to the eject motor terminals with power on  Disconnect power connector from the tape drive -Battery life is extended when disconnected –Tape is clear of the take-up reel or is fully rewound –Take-up reel leader is clear of tape or attached to buckling arm –You may need to reverse the polarity first to reset the mechanism

Reliability Manual Tape Eject The tape cartridge is ejected by placing the contacts of a 9V battery on the contacts of the eject motor You may need to retract the buckling arm to reset the eject process

Reliability Manual Tape Eject Negative (-) contact to rear post retracts the buckling arm Postive (+) contact to rear post engages buckling arm and tape is ejected

Reliability TAPE REWIND MANUAL AND POWER REWIND

Reliability Rewinding Considerations Caution: The tape leader splice may hang on the tape head –Stop and release the tension –The splice should now pass over the head The buckle between the tape and take-up reel leaders will hang on the head –Stop and carefully close the head shield –Continue rewinding the buckle past the head

Reliability Manual Rewind Supply Motor Access Hole T8 Driver Base Plate

Reliability Manual Rewind Carefully position the drive onto one of its sides –Locate the supply motor access hole on the drive base plate –Insert the T8 Torx driver into the access hole –Couple with the supply motor screw –Rotate counterclockwise (right to left) Stop when there is any resistance –Visually inspect the tape path –The leader splice or buckle could be hung on the head assembly or a roller –It the motor is frozen, return the drive to the supplier.

Reliability Power Rewind Carefully position the drive onto one of its sides The supply motor access hole is located on the base plate Insert the T8 Torx driver into the access hole and couple with the supply motor screw Ensure power tool is set to reverse (counterclockwise) and keep RPM low

Reliability Power Rewind Caution: Using an electric power driver will damage the tape and the drive leaders if you do not stop before reaching the end of the tape Visually monitor tape rewind progress Stop before tape is fully rewound Switch to T8 hand tool to complete the rewind

Reliability DETACHED LEADER

Reliability Threading The Leader Start at roller #4 Keep leader low to the rollers Follow the roller path Caution: the head shield may be retracted

Reliability Questions?