Fostex E-2 - Routine Maintenance; Cleaning and Demagnetization; Reproduce Alignment Checks

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CAUTION: Never use organic solvents such as methylethyl ketone (МЕК),
lacquer thinner, acetone, etc. These can dissolve the materials that bind
the heads together, and, if spilled, can mar or deform plastic parts.
Wipe the heads, tension arm rollers, idler roller, pinch roller, and
capstan with a common cotton swab, moistened with the head cleaning fluid
or alcohol. Allow the parts to air dry before threading а tape. (The
process should be repeated until the swab no longer shows evidence of the
reddish-brown oxide, and until the heads are shiny and clean.)
The exterior of the E-2/E-22 can be wiped with a cloth that is moistened
with a weak detergent and water solution. Do not use solvents, 0115, waxes
or spray-on cleaners.
DEMAGNETIZATION
When a recording 15 made, the record/play head applies а powerful
magnetic field to the tape. Iron oxide or similar magnetic particles in the
recording tape store a portion of that magnetic field (this is the
recording). It is a necessary law of physics that, as the recorded tape is
subsequently played, some of the tape's magnetic field will be transferred
to nearby metal parts. This residual magnetism is undesirable because 1%,
in turn, can partially erase a tape. The purpose of demagnetization
(degaussing) is to neutralize residual magnetism in the vicinity of the
tape path.
Demagnetizing with a device such as Fostex Model HD-10 is accomplished
by bringing a strong alternating magnetic field (created by a demagnetizer)
near the head area, then withdrawing the field slowly. It is very important
that this procedure be done carefully, and that no tapes be within 2 feet
(0.6 meters) of the demagnetizer when it is operating. It is also important
to turn off the E-2/E-22 when the demagnetizer is turned on.
Demagnetize after every 8 hours of use.
CAUTION: Demagnetizers are not dangerous devices but if used improperly
they can instantly erase a valuable tape, and can permanently magnetize
metal parts ~ the opposite of the desired result. NEVER TURN ON ОК EVEN
PLUG IN А DEMAGNETIZER UNLESS IT IS AT LEAST 3 FEET (1 METER) AWAY FROM THE
E-2/E-22. If the demagnetizer should be turned on or off near-by the
E-2/E-22,it may impart a magnetic charge to the heads or tape guides which
is too strong to be removed by the same demagnetizer.
CHECKING REPRODUCE ALIGNMENT
1.) After cleaning and demagnetizing the transport, thread a reproduce
alignment tape on the recorder.
Reproduce alignment tape (NAB) for E-2: Fostex Model 9101 15 ips/38
cm/s and 7-1/2 ips/19 cm/s
or *[MRL 211205 (15 ips/38 cm/s)]
[MRL 21T204 (7-1/2 ips/19 cm/s)], Magnetic Reference Lab. All specs are
identical with Model 9101.
Wow/flutter measurement for E-2: Fostex Model 9102A (15 ips/38 cm/s) and
(7-1/2 ips/19 cm/s)
or *[STL 453-1 (15 ips/38 cm/s)]
[STL 852-1 (7-1/2 ips/19 cm/s)], Standard Tape Lab.