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(
Figure
4-2. Tape Head Assembly
dipped in these cleaner solvents can be used
to remove oxide buildup in the slotted areas of
the tape head as well as on the rubber surface
of the capstan.
Note:
Heads are susceptible to damage.
Keep all metallic objects away from
tape head area.
4. Replace both head covers.
5. Open the vacuum chamber door and clean
vacuum column(s). Use a clean lint-free
cloth dampened in one of the cleaner
solvents. Cotton swabs may be used to
clean walls of the vacuum column(s).
Visually check that the air holes are
clear.
OPERATION
4-3
6. Clean the vacuum chamber glass door and
front glass door on the unit of all
smudge marks with a lint-free cloth and
a nonspray liquid window cleaner.
7. Close the vacuum chamber door.
8. The tape unit can now be put back into
service.
BOT PATCH MOUNTING
The beginning and end of the working storage
area on the tape are marked by small, inch-long
reflective markers. Marker dimensions are:
Length:
1.1 inch
±
0.2
Width:
0.19 inch
±
0.02
Thickness:
0.0008 inch (max.)
The BOT and the EOT markers are placed on the
Mylar-base side of the tape. Take care when placing
the markers. They must be within 0.03 inch (0.08 em)
of, but not protrude beyond, the reference edge of
the tape, and be free of wrinkles and adhesive.
The tape between BOT and the physical begin-
ning of tape is referred to as the leader. Ifbad spots
develop on the tape toward the leading edge, the
BOT marker can be moved down so that the
damaged section of the tape can still be used for
information storage in the normal manner. A leader
length of about 16 feet (5 m) is recommended for
automatic threading.
TAPE HANDLING AND STORAGE
The following rules are prerequisite for proper
magnetic tape handling and storage.
Keep tapes clean. Dust and dirt can reduce the
intensity of reading or recording signals by altering
the distance between the head and the tape.
Therefore:
• Never touch the tape's oxide coating; body oils
on tape attract dust and lint.
• Keep the tape in its dust-proof container until
just prior to use on the tape drive.
• Keep tape containers clean and dust-free
inside and out. Don't leave containers open
when tape is in use.
• Keep the tape transport door closed when the
tape drive is not in use.
• A void dangling the free end of the tape on the
floor when changing reels.
• Don't smoke in the computer room. Smoke and
ashes are dirt; hot ashes are destructive to
magnetic tape. Food and drink should not be
put near the tape devices.
• Identify reels with adhesive stickers, which
are easily removed and leave no residue.
Eraser particles are dirt. Change the label;
don't erase it.
Handle and store tapes with care. A void damaging
tapes and reels or placing tapes where temperature,
CFIO
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