6300
(2)
Isopropyl alcohol,
91
percent
by
volume.
CAUTION
DO
NOT
USE ISOPROPYL ALCOHOL, OR ITS EQUIVA-
LENT,
ON
ANY
PART
OF
THE DISK DRIVE OR ITS
CARTRIDGE UNLESS SPECIFICALLY INSTRUCTED
TO
DO SO
IN
THIS MANUAL.
CAUTION
USE
ONLY
91
PERCENT ISOPROPYL
ALCOHOL
TO
CLEAN DISK
AND
HEADS. USE OF
ANY
OTHER TYPE
OF CLEANER OR SOLVENT, SUCH
AS
CARBON
TETRA-
CHLORIDE OR TRICHLORETHYLENE
MA
Y RESULT
IN
DAMAGE
TO
THE DISKS OR HEADS. DO
NOT
USE
CONTAMINATED
ALCOHOL
WHICH COULD
CONTAIN
ANY
FORM
OF
RESIDUE.
WARNING
THE
91
PERCENT ISOPROPYL
ALCOHOL
SOLUTION IS A
FLAMMABLE
LIQUID. KEEP THE BOTTLE CONTAINING
ISOPROPYL ALCOHOL STORED
IN
A SEALED
METAL
CONTAINER EXCEPT WHEN
IN
USE.
WARNING
WHEN SHIPPING
91
PERCENT ISOPROPYL
ALCOHOL,
COMPL Y WITH THE APPROPRIATE REGULATIONS FOR
SHIPMENT
OF
FLAMMABLE
LIQUIDS.
(3)
Disk cleaning wands
(2
required) Texwipe Part No. TX800*,
PERTEC
Part No.
623-0002.
(4)
Masking tape 12.7 mm (1f2-inch) or19.1 mm (%-inch) wide.
6.4.1
INSPECTING AND CLEANING
THE
HEADS
Remove the cover from the disk drive and raise the logic
PCBA
to the extended position.
Instructions for removal
of
the disk drive cover are contained in Paragraph 2.2. Remove the
disk cartridge also,
if
necessary.
NOTE
The
Read/Write
PCBA
should
be
removed
prior
to
performing
the head
cleaning
operation.
Use
a dental mirror
and
a suitable light source (such
as
a penlight) to inspect each
head
before and after cleaning. It is important that all debris
be
removed from the head.
Examples of slider defects and
head
contamination are shown in Figures
6-1
and 6-2 with
explanations for each example.
If the contamination shown in Figure
6-1
cannot
be
removed with alcohol without scratching slider surface, affected heads must
be
replaced.
Any physical damage to the gimbal spring,
load spring, slider, or the load pin will
necessitate replacement
of
the head assembly.
* Available from Texwipe Co., Hillsdale, New Jersey
07642
**Chesebrough-Ponds, Inc., Greenwich,
CT
06830
6-4
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