PCC D3400 - General Maintenance; General Precautions; Cleaning the Disk Drive

6.3.2 GENERAL MAINTENANCE
Perform a visual inspection of the disk drive for
loose electrical connections, dirt, cracks,
binding, excessive wear, and loose hardware while conducting any maintenance function.
Cleanliness is essential for proper operation. Minute particles
of dirt trapped between the
flying heads and the disk causes the disk surface to become scored. This condition may
result in
an unusable disk or head damage, or both.
Accumulated foreign matter can also cause the read/write heads
to fly at an excessive
distance from the disk surface. This
will severely impair the retrieval of data and result in
improper writing.
6.3.3 GENERAL
PRECAUTIONS
Any work performed on the drive should be accomplished with the power off and,
preferably, with the power cord disconnected from the power line unless otherwise
necessary.
CAUTION
THE DISK DRIVE POSITIONER ASSEMBL Y CONTAINS
A PERMANENT MAGNET; KEEP ALL ITEMS MADE OF
FERROUS MA TERIALS [TOOLS, WRIST WA TCHES,
RINGS, ETC.] AWA Y FROM THIS AREA.
WARNING
AVOID PLACING HANDS IN THE VICINITY OF THE
CARTRIDGE
OR VOICE COIL WHEN THE DISK DRIVE
IS OPERA TING. AN EMERGENCY UNLOAD OF THE
MAGNETIC HEADS COULD CAUSE SERIOUS INJURY
TO MAINTENANCE OR OPERATING PERSONNEL.
CAUTION
CIGARETTE SMOKE AND TOBACCO ASHES ARE A
COMMON CAUSE OF PROBLEMS INDUCED DURING
SERVICING. AVOID SMOKING IN THE IMMEDIA TE
VICINITY WHEN SERVICING THE DRIVE WITH THE
COVER OFF OR THE AIR FILTER REMOVED.
NOTE
A void operating the disk drive with the top cover removed
unless maintenance cannot be performed otherwise.
If the
disk drive
must be operated with the dust cover off, use a
work cartridge.
6.4
CLEANING THE DISK DRIVE
The disk drive requires cleaning in these major areas: heads, disks, spindle, positioner,
base casting, dust cover, and filters. Details are given in Paragraphs 6.4.1 through 6.4.5,
and 6.26, respectively.
The following cleaning materials are recommended for use when cleaning the disk drive.
(1) Lint-free wiper such as Microwipes TX500* or Absorband TX404* or Kaydry
Disposable Wipes
34720* * or equivalent.
* Available from Texwipe Co., Hillsdale, New Jersey 07642.
* * Available from Kimberly-Clark.
6-3
8300