Tandon TM100-1 Operating And Service Manual page 27

DRIVE SELECT 3 ENABLE (W8)
Removal of this jumper allows interface Jl-6 to
be used as an alternate input/output line. W8 is
normally installed.
W8 DRIVE SELECT 3 ENABLE
X Allows drive to be selected via Jl-6.
— Disables Drive Select 3 line.
DOOR LOCK SOLENOID (W10)
This jumper is used in conjunction with an
optional door lock solenoid. The W10 jumper is
normally not installed.
W10 DOOR LOCK SOLENOID
X Enables door lock solenoid via J1-2.
— Disables door lock circuits.
3.7 DISKETTES
The TM100-1 and TM100-2 drives use an
ANSI-compatible, 5-1/4-inch diskette. Diskettes
are available with a single index hole or with
multiple (index and sector) holes.
Diskettes with a single hole are used when soft
sector format is required. Multiple hole
diskettes provide sector information through
the use of an index sensor and electronics.
Figure 3-4 illustrates the diskette used with the
drive. This recording media is a flexible diskette
enclosed in a protective jacket. The protected
diskette, free to rotate within the jacket, is
continuously cleaned by its soft fabric lining
during normal operation.
LOADING THE DISKETTE
The drive is loaded by inserting the diskette,
head aperture forward, into the front slot of the
drive. Access to the diskette loading slot is
obtained by opening the front latch.
The diskette should be carefully inserted until it
is solidly against the back stop.
D am age
diskette may result if the door is
closed when the diskette is not
properly inserted. This prevents
reliable recovery o f the recorded
data.
WRITE PROTECT TAB
The drive is equipped with a write protect
switch assembly. This switch operates in
conjunction with a diskette that has a slot cut in
the protective jacket. Figure 3-5 contains the
location of the slot.
When the slot is covered with an optically
opaque, self-adhesive tab, the diskette is write
protected. The tab must be removed to write on
the diskette. Figure 3-5 contains information on
how to install a tab to cover the slot.
DISKETTE HANDLING AND STORAGE
It is important the diskette be handled and
stored correctly so the integrity of the recorded
data is maintained. A damaged or contaminated
diskette can impair or prevent recovery of data,
and can result in damage to the read/write
head(s).
Figure 3-5 contains an illustration of the
physical configuration of the diskette. The
5.125-inch diskette is oxide-coated, flexible
mylar. It is enclosed in a 5-1/4-inch square
protective jacket. Read/write head access is
made through an aperture in the jacket. In addi­
tion, openings for the drive hub and diskette
index hole are provided.
Figure 3-6 provides some helpful hints on the
care and handling of the drive and diskettes. In
addition, to ensure trouble-free operation and to
enhance the service life of the diskette, the
following handling procedures should be
observed.
1 . Return the diskette to the protective
jacket when not in use.
2 . Avoid exposing the diskette to any
magnetizing force in excess of 50 oersted.
3-9
CAUTION
to the center of- the