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- headclnr.txt 1/29/82
- contributed by Roy Lipscomb, Logic Associates
-
- The following three items document Shugart's changing
- policy towards head-cleaning diskettes. (Spelling
- and punctuation are faithful to the cited sources.)
-
- -------------------------------------------------------------
- (Reprinted from Personal Systems, newsletter of the San Diego
- Computer Society, July 81, p. 17)
-
- SHUGART DOES NOT RECOMMEND CLEANING DISKS
-
- The following is reprinted from a Shugart Service Memo (#2,
- dated January 27, 1981) and was submitted by Hugh Turner.
-
- "There have been numerous inquiries from our customers
- concerning Shugart's stand on cleaning diskettes. Our Media
- Engineering group has finished it's testing on several
- cleaning diskettes and determined that they do not meet our
- engineering specifications, for the following reasons:
-
- * The cleaning diskettes are too abrasive and are not as
- flexible as the media. This causes the diskette to deteri-
- orate the head between 5-10uin horizontally and between
- 2-15uin vertically.
-
- * The cleaning diskettes do not comply with the side 0 button.
- Due to the flexibility of the cleaning diskettes, side 0 was
- only cleaned where the side 1 rails hit side 0. The side 1
- head was not cleaned on the taper surface of the head.
-
- * These results were seen after ten minutes which simulated
- twenty cleanings of 30 seconds each.
-
- BASED ON THE ABOVE TEST RESULT IT IS SHUGART'S RECOMMENDATION
- AT THIS TIME NOT TO APPROVE OR RECOMMEND ANY CLEANING DISKETTE.
-
- If customers continue to use a cleaning diskette they may run
- the risk of voiding their warranty. Test results show that
- the cleaning diskettes will blend the side 0 head causing media
- wear under normal usage. The corrective action for this
- problem is to replace the complete head assembly at the
- customer's expense.
-
- Our Engineering group is conducting on going evaluations with
- several vendors to correct the above discrepancies in order
- to approve some type of cleaning diskette in the future.
-
- Please direct any further questions to Technical Support, 475
- Oakmead Parkway, Sunnyvale CA 94086; (408)733-0100."
-
- -------------------------------------------------------------
- (Reprinted from Personal Systems, newsletter of the San Diego
- Computer Society, August 81, p. 8)
-
- Shugart Service Memo
-
- Product: All Floppy Products
- Date: March 20, 1981
- Memo #: 4
-
- Subject: Cleaning Diskettes for Floppy Dirves
-
- Shugart Associates has approved Innovative Computer
- Products cleaning diskette (P/N 2024 only) for use on
- Floppy Disk Drives.
- Use of the cleaning diskette kit will not void the
- warranty as long as the manufacturers instructions that
- are supplied with the kit are followed.
- Shugart plans to private label cleaning diskettes
- in the near future.
- This memo supercedes Memo #2, Cleaning Diskettes
- for Floppy Products.
-
-
- ----------------------------------------------------------
- (Ad in Mini-Micro Systems, January 1982, p. 254)
-
- SHUGART OFFERS HEAD-CLEANING KIT
-
- This floppy-disk-drive head-cleaning kit in 5 1/4 and
- 8-in. sizes contains two lint-free, non-abrasive polyester
- diskettes in vinyl jackets, a 4-oz. bottle of cleaning
- solvent and a dispenser cap. The kit, which provides
- 13 cleanings per diskette, cleans single- or double-sided
- drives with a wet/dry application. The kits sell for
- $28 for the 8-in. size and $26 for the 5 1/4-in. size,
- in OEM quantities. SHUGART ASSOCIATES, 475 Oakmead
- Parkway, Sunnyvale, Calif. 94086.
-
-
- ----------------------------------------------------------