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CSA 803A Service Manual
6Ć1
Preventive Maintenance
Regular maintenance can prevent instrument breakdown and may improve
the reliability of the instrument. The environment in which the instrument
operates will determine the frequency of maintenance. A convenient time for
doing preventive maintenance is prior to performing an electrical adjustĆ
ment.
WARNING
Dangerous potentials exist at several points throughout this instruĆ
ment. When the instrument is operated with the covers removed, to
avoid electric shock, do not touch exposed connections or compoĆ
nents.
Some transistors have voltages present on their cases. Therefore,
to avoid electric shock, disconnect the power before cleaning the
instrument or replacing any parts.
The top and bottom cabinet panels (or covers) protect you from operating
potentials present within the instrument. In addition, the panels reduce
radiation of electromagnetic interference from the instrument. To remove the
panels, loosen the fasteners and lift the panels off. Operate the instrument
with the panels in place to protect the interior from dust.
Removing the
Cabinet Panel