Dell PowerVault DLT, VS, and SDLT Media Handbook Version 2.0 9When an expired cleaning tape is used in a:• DLT4000/DLT7000 drive, the tape is ejected and the cleaning light stays on.• SDLT220/SDLT320 drive, the tape is not ejected and the cleaning light goes out the 20thtime (last) the tape is used.• DLT1/VS80 and VS160 drives, there is no method to determine that the cleaning tape isexpired except to manually note usage on the check box label. It is the customer'sresponsibility to record usage of the cleaning tape and discard after 20 uses. The cartridge willhave little or no effect on head cleaning after the recommended 20 uses.Media HandlingCartridge FeaturesFigure 1-13. Cartridge TapeCartridge Leader — Buckles with drive leader to pull media from cartridge. Two types, DLTtapecartridges (mylar loop) and Super DLTtape cartridges (plastic buckle with metal pin.)Reel Locks — Prevent media reel in the cartridge from spinning when the cartridge is notloaded in a drive (ensures that proper tension of media is maintained.)Cartridge Hub — Mechanical interconnect between the cartridge and the drive reel motor.serial numberreel lock leaderdoor lockcartridge hubreel lock