Zeiss humphrey HFA II-i series, Руководство по обслуживанию на месте

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Humphrey Field Analyzer II - i Appendix K
Confidential and Proprietary
52235C1105 K - 1
Field Service Guide
Appendix K. Data Loss Recovery
Contents:
C
Data Loss Prevention Tips
C
Database Structure
C
The Five “R’s” of Database Recovery
C
Database Utilities
C
Floppy Diskette - Troubleshooting Dialogue
C
Hard Disk - Troubleshooting Dialogue
C
Magnetic Optical Drive
C “Repair Backup” (repairs files on hard disk, enabling backup to be performed.)
K.1 Data Loss Prevention Tips
There may be situations, due either to operator misunderstanding or instrument
malfunction, when the patient database or backup becomes corrupted or is reported as
inaccessible.
Prior to completing any data loss related service call, always take the time to discuss the
following data loss prevention tips with your customer.
C
Ensure that your customer understands the importance of routinely backing up their
patient data files. At minimum, this should include a copy of each floppy diskette
and at least one magnetic optical disk. In fact, it is recommended that two magnetic
optical disks are used and rotated every other backup. Consult the User’s Manual
for recommendations on the frequency of backup.
C
Stress the importance of proper handling and storage of floppy diskettes and
magnetic optical disks. Make certain that tapes are stored at least five feet away from
any magnetic field. This includes not storing the diskettes on the top surface of the
HFA II.
C
Verify that only high-quality, double-sided, high-density floppy preformatted
diskettes are used. Only DOS preformatted floppy diskettes will operate in the HFA
II. A preformatted diskette can be reformatted on the HFA II.
C
Make certain that the customer understands that they should not remove a floppy
diskette or magnetic optical disk from the drive during a read or write operation.
Point out the floppy drive icon in the upper right of the CRT display. Ensure that
they observe this icon and only remove the diskette at the appropriate time.
C If frequent data loss occurs, verify the power source that the HFA II is connected to
meets instrument operational requirements. A fluctuating line voltage can cause
database related problems. Use of an uninterruptible power supply or UPS may help
prevent data loss. Operational and UPS requirements are discussed in Section 1.