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Appendix F: User Service
F–2
DAS System User Manual
Preventive Maintenance
The electrical performance should be checked approximately once a year. Do this
by running the power-on diagnostics and by performing any other performance
checks and adjustment procedures as described in the DAS 9200 Technician’s
Reference Manual and the Verification and Adjustment Procedures document.
Preventive maintenance mainly consists of periodic cleaning. Periodic cleaning
reduces instrument breakdown and increases reliability. You should clean the
mainframe and terminal as needed, based on the operating environment. Dirty
conditions may require more frequent cleaning than computer room conditions.
Clean the exterior surfaces of the mainframe with a dry, lint-free cloth or a
soft-bristle brush. If dirt remains, use a cloth or swab dampened with a 75%
isopropyl alcohol solution. A swab is useful for cleaning in narrow spaces
around the controls and connectors. Do not use abrasive compounds on any part
of the mainframe.
CAUTION.
Avoid getting moisture inside the mainframe during external cleaning;
and use only enough solution to dampen the cloth or swab.
Do not wash the front-panel DC switch. Cover the switch while washing the
mainframe.
Use only deionized water when cleaning. Use a 75% isopropyl alcohol solution
as a cleanser and rinse with deionized water.
Do not use chemical cleaning agents; they may damage the instrument. Avoid
chemicals that contain benzene, toluene, xylene, acetone, or similar solvents.
The floppy disk drive requires routine maintenance to operate at maximum
efficiency. The disks can be damaged if dirt and dust accumulate on the
recording surfaces. To prevent damage, the disks should be properly stored in
their protective containers where they will not be exposed to dust or dirt. In
addition the head should be cleaned periodically.
You will need a 3.5-inch floppy disk head-cleaning kit for routine maintenance.
Perform the routine maintenance as follows:
H
Clean the face of the floppy disk drive monthly with a dampened cloth.
CAUTION.
Do not allow moisture to enter the disk drive. When power is applied,
the internal components may be damaged.
Exterior Mainframe
Floppy Disk Drive
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