Use these instructions if the tape has become tangled in
the tape path.
Before you begin
Remove the drive canister from the library frame and remove
the drive from the drive canister before continuing with these instructions.
About this task
Use this procedure if the tape has become tangled in the
tape path.
Procedure
Carefully pull out and untangle the unspooled tape until
both the take-up reel and the supply reel contain untangled tape.
Set the drive on its left side with the head and the tape
path facing up.
From the bottom of the drive, locate the access hole 1 in
the bottom cover. Insert a 2.5-mm offset hex wrench through the bottom
cover access hole and into the reel motor axle. Begin spooling tape
back into the cartridge by turning the hex wrench clockwise.
Figure 1. Using hex wrench to rewind tape into cartridge
Continue spooling tape into the cartridge until the tape
is taut and remains within the flanges of the tape guiding rollers.
Ensure that you do not stretch or scratch the tape.
Locate the threader motor worm gear 4 on
the rear end of the drive. Use your finger to rotate the threader
motor worm gear and slowly drive the threader mechanism gear 6 .
Rotating the threader motor worm gear clockwise, draws the leader
block assembly (LBA) into the cartridge.
Figure 2. Drive canister with cover removed
As the tape LBA is secured in the cartridge, you should
hear the LBA retention spring clips click into place. If you do not
hear the click, continue rolling until the threader motor worm gear 4 stops.
The LBA is in the correct position.
Note the following:
Loader mechanism gear 8 nearest the
front of the drive that actuates the cartridge loader mechanism
Position of the rotator stub 3
Front loader motor worm gear 1 . Rotating
this gear allows the loader mechanism gear 8 to
turn.
Rotate the loader motor worm gear 1 to
turn the loader mechanism gear 8 counterclockwise.
Continue turning until the rotator stub 3 passes
under the aluminum bracket 7 . This releases
the LBA leader pin.
Rotate the threader motor worm gear 4 to
turn the threader mechanism gear 6 counterclockwise.
This moves the LBA out of the cartridge and past the read/write head.
Stop this rotation when the LBA is near the tape guide roller nearest
the drive rear end.
Figure 3. Leader block
assembly (LBA)
Refer to Figure 2. Continue
rotating the loader motor worm gear 1 until
the rotator stub 3 is positioned. Notice
that the rotator stub 3 is nearly aligned
with the cartridge loader tray guide bearing 2 .
Remove the cartridge from the cartridge loader tray.
Reassemble the drive.
Reassemble the drive canister.
Install a new drive canister.
Repack and return the failed drive through your IBM parts
network.
